Misplaced Pages

#838161

151-721: The Lashly Mountains were discovered by the British National Antarctic Expedition (1901–04) and named for William Lashly , a member of the party which explored this area. The Lashley Mountains are on the edge of the East Antarctic Ice Sheet. They are west of the Quartermain Mountains and Mount Feather , from which they are separated by the Lashly Glacier, which flows south into The Portal . Mount Crean

302-410: A Russian expedition led by Fabian Gottlieb von Bellingshausen and Mikhail Lazarev . The decades that followed saw further exploration by French, American, and British expeditions. The first confirmed landing was by a Norwegian team in 1895. In the early 20th century, there were a few expeditions into the interior of the continent. British explorers Robert Falcon Scott and Ernest Shackleton were

453-514: A Scots dog and ski expert based in Archangel, Russia. According to Huntford, however, this expert was not invited to join the expedition. The Discovery Expedition, like those of Ross and Borchgrevink before it, was to work in the Ross Sea sector of Antarctica. Other areas of the continent had been considered, but the principle followed was that "in going for the unknown they should start from

604-491: A Scott-Shackleton rift date from this point, or from a supposed falling-out during the southern journey which had provoked an angry exchange of words. Some of these details were supplied by Armitage, whose relationship with Scott had broken down and who, after Scott, Wilson and Shackleton were all dead, chose to reveal details which tended to show Scott in a poor light. Other evidence indicates that Scott and Shackleton remained on generally good terms for some while; Shackleton met

755-522: A brief landing and examination of the remains of Borchgrevink's camp, the ship continued southwards along the Victoria Land coast. At McMurdo Sound Discovery turned eastward, touching land again at Cape Crozier where a pre-arranged message point was set up so that relief ships would be able to locate the expedition. She then followed the Barrier to its eastern extremity where, on 30 January,

906-768: A broad icecapped summit, standing south of the Lashly Mountains, on the south side of the main stream of the Skelton Glacier where it leaves the polar plateau. Discovered by the New Zealand party of the CTAE (1956-58) who named it because of its association with The Portal. Portal Mountain is the southernmost area of the Feather and Lashly geological formation. [REDACTED]  This article incorporates public domain material from websites or documents of

1057-527: A few blue-ice areas , the wind and sublimation remove more snow than is accumulated by precipitation. In the dry valleys, the same effect occurs over a rock base, leading to a barren and desiccated landscape. Antarctica is colder than the Arctic region, as much of Antarctica is over 3,000 m (9,800 ft) above sea level, where air temperatures are colder. The relative warmth of the Arctic Ocean

1208-525: A mild climate. West Antarctica was partially in the Northern Hemisphere , and during the time, large amounts of sandstones , limestones , and shales were deposited. East Antarctica was at the equator, where seafloor invertebrates and trilobites flourished in the tropical seas. By the start of the Devonian period (416  Ma ), Gondwana was in more southern latitudes, and the climate

1359-469: A mindset that was carried forward into later expeditions. This mystified seasoned ice travellers such as Fridtjof Nansen , whose advice on such matters was usually sought, but often set aside. The Discovery Expedition launched the Antarctic careers of several who became stalwarts or leaders of expeditions in the following fifteen years. Apart from Scott and Shackleton, Frank Wild and Ernest Joyce from

1510-440: A national hero, despite his aversion to the limelight, and the expedition was being presented to the public as a triumph. This euphoria was not conducive to objective analysis, or to thoughtful appraisal of the expedition's strengths and weaknesses. In particular, the glorification by Scott of man-hauling as something intrinsically more noble than other ice travel techniques led to a general distrust of methods involving ski and dogs,

1661-457: A native bacterial community within the subterranean water body of Lake Vostok . The existence of life there is thought to strengthen the argument for the possibility of life on Jupiter 's moon Europa , which may have water beneath its water-ice crust. There exists a community of extremophile bacteria in the highly alkaline waters of Lake Untersee . The prevalence of highly resilient creatures in such inhospitable areas could further bolster

SECTION 10

#1732797871839

1812-701: A number of mountain ranges in the region, the most prominent being the Ellsworth Mountains. The presence of the West Antarctic Rift System has resulted in volcanism along the border between West and East Antarctica, as well as the creation of the Transantarctic Mountains. East Antarctica is geologically varied. Its formation began during the Archean Eon (4,000 Ma–2,500 Ma), and stopped during

1963-472: A party under Royds travelled to Cape Crozier to leave a message at the post there, and discovered an emperor penguin colony. Another group, under Armitage, reconnoitred in the mountains to the west, returning in October with the expedition's first symptoms of scurvy . Armitage later blamed the outbreak on Scott's "sentimental objection" to the slaughter of animals for fresh meat. The entire expedition's diet

2114-475: A position. The return journey to the Ferrar Glacier was undertaken in conditions which limited them to no more than a mile an hour, with supplies running low and dependent on Scott's rule of thumb navigation. On the descent of the glacier Scott and Evans survived a potentially fatal fall into a crevasse, before the discovery of a snow-free area or dry valley , a rare Antarctic phenomenon. Lashly described

2265-619: A reported 82°17′S. As a trailbreaker for later ventures, the Discovery Expedition was a landmark in British Antarctic exploration history. Between 1839 and 1843 Royal Naval Captain James Clark Ross , commanding his two ships HMS Erebus and HMS Terror , completed three voyages to the Antarctic continent . During this time he discovered and explored a new sector of the Antarctic that would provide

2416-591: A second ship, the Terra Nova . Colbeck was carrying firm instructions from the Admiralty that, if Discovery could not be freed by a certain date she was to be abandoned and her complement brought home on the two relief ships. This ultimatum resulted from Markham's dependence on the Treasury for meeting the costs of this second relief expedition, since the expedition's coffers were empty. The Admiralty would foot

2567-531: A shoal, Discovery began the return journey to New Zealand. On its return to Britain, the expedition's reception was initially muted. Some press reporters were surprised at the good physical condition of the men when they arrived in Portsmouth, as they had read previous reports about the expedition's problems with scurvy and bad food. Markham was present to meet the ship in Portsmouth when Discovery docked there on 10 September 1904, but no dignitaries greeted

2718-543: A torpedo lieutenant on HMS  Majestic , was looking for a path to career advancement, and a chance meeting with Sir Clements in London led him to apply for the leadership of the expedition. Scott had long been in Markham's mind, though by no means always his first choice, but other favoured candidates had either become in his view too old, or were no longer available. With Markham's determined backing, Scott's appointment

2869-595: Is Earth 's southernmost and least-populated continent . Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean ), it contains the geographic South Pole . Antarctica is the fifth-largest continent, being about 40% larger than Europe , and has an area of 14,200,000 km (5,500,000 sq mi). Most of Antarctica

3020-655: Is 1–3 cm (0.39–1.18 in). From the end of the Neoproterozoic era to the Cretaceous , Antarctica was part of the supercontinent Gondwana . Modern Antarctica was formed as Gondwana gradually broke apart beginning around 183 Ma. For a large proportion of the Phanerozoic , Antarctica had a tropical or temperate climate , and it was covered in forests. During the Cambrian period , Gondwana had

3171-542: Is almost 18,000 km (11,200 mi) long: as of 1983 , of the four coastal types, 44% of the coast is floating ice in the form of an ice shelf , 38% consists of ice walls that rest on rock, 13% is ice streams or the edge of glaciers, and the remaining 5% is exposed rock. The lakes that lie at the base of the continental ice sheet occur mainly in the McMurdo Dry Valleys or various oases . Lake Vostok , discovered beneath Russia's Vostok Station ,

SECTION 20

#1732797871839

3322-480: Is being revealed by techniques such as remote sensing , ground-penetrating radar , and satellite imagery . Geologically, West Antarctica closely resembles the South American Andes . The Antarctic Peninsula was formed by geologic uplift and the transformation of sea bed sediments into metamorphic rocks . West Antarctica was formed by the merging of several continental plates , which created

3473-449: Is caused by the emission of chlorofluorocarbons and halons into the atmosphere, which causes ozone to break down into other gases. The extreme cold conditions of Antarctica allow polar stratospheric clouds to form. The clouds act as catalysts for chemical reactions, which eventually lead to the destruction of ozone. The 1987 Montreal Protocol has restricted the emissions of ozone-depleting substances. The ozone hole above Antarctica

3624-640: Is covered by the Antarctic ice sheet , with an average thickness of 1.9 km (1.2 mi). Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation . It is mainly a polar desert , with annual precipitation of over 200 mm (8 in) along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost 60 metres (200 ft). Antarctica holds

3775-655: Is divided into West Antarctica and East Antarctica by the Transantarctic Mountains , which stretch from Victoria Land to the Ross Sea . The vast majority of Antarctica is covered by the Antarctic ice sheet , which averages 1.9 km (1.2 mi) in thickness. The ice sheet extends to all but a few oases , which, with the exception of the McMurdo Dry Valleys, are located in coastal areas. Several Antarctic ice streams flow to one of

3926-470: Is evidence of a large number of volcanoes under the ice, which could pose a risk to the ice sheet if activity levels were to rise. The ice dome known as Dome Argus in East Antarctica is the highest Antarctic ice feature, at 4,091 metres (13,422 ft). It is one of the world's coldest and driest places—temperatures there may reach as low as −90 °C (−130 °F), and the annual precipitation

4077-408: Is expected to add about 11 cm (5 in) to global sea level rise . Marine ice sheet instability may cause West Antarctica to contribute tens of centimeters more if it is triggered before 2100. With higher warming, instability would be much more likely, and could double global, 21st-century sea-level rise. The fresh, 1100-1500 billion tons (GT) per year of meltwater from the ice dilutes

4228-582: Is predicted to slowly disappear; by the 2060s, levels of ozone are expected to have returned to values last recorded in the 1980s. The ozone depletion can cause a cooling of around 6 °C (11 °F) in the stratosphere . The cooling strengthens the polar vortex and so prevents the outflow of the cold air near the South Pole, which in turn cools the continental mass of the East Antarctic ice sheet. The peripheral areas of Antarctica, especially

4379-526: Is the highest peak of the range. Portal Mountain lies to the south of the range, above the Skelton Névé . The Lashly Mountains lie between the intrusive rocks of the McMurdo Dry Valleys and the extrusive rocks of the Transantarctic Mountains . Samples from an unnamed nunatak north of Mount Crean indicated an extrusive origin. The Lashly Formation is the youngest in the Victoria Group of

4530-441: Is the largest subglacial lake globally and one of the largest lakes in the world. It was once believed that the lake had been sealed off for millions of years, but scientists now estimate its water is replaced by the slow melting and freezing of ice caps every 13,000 years. During the summer, the ice at the edges of the lakes can melt, and liquid moats temporarily form. Antarctica has both saline and freshwater lakes. Antarctica

4681-504: Is transferred through the Arctic sea ice and moderates temperatures in the Arctic region. East Antarctica is colder than its western counterpart because of its higher elevation. Weather fronts rarely penetrate far into the continent, leaving the centre cold and dry, with moderate wind speeds. Heavy snowfalls are common on the coastal portion of Antarctica, where snowfalls of up to 1.22 m (48 in) in 48 hours have been recorded. At

Lashly Mountains - Misplaced Pages Continue

4832-476: The Antarctic Circle (one of the five major circles of latitude that mark maps of the world), Antarctica is surrounded by the Southern Ocean . Rivers exist in Antarctica; the longest is the Onyx . Antarctica covers more than 14.2 million km (5,500,000 sq mi), almost double the area of Australia, making it the fifth-largest continent, and comparable to the surface area of Pluto . Its coastline

4983-492: The Beacon Supergroup . It is a sandstone and siltstone sequence containing plant remains that overlies the Feather conglomerate. It appears to conform with the underlying conglomerate in areas, with local areas of disconformity. The Aztec Siltstone appears to have been deposited on a flat alluvial plain that held streams, swamps, lakes and low emergent areas. There are plant fossils of Dicroidium flora in much of

5134-606: The Beardmore Glacier by Frank Wild on the Nimrod Expedition in 1907, and low-grade coal is known to exist across many parts of the Transantarctic Mountains. The Prince Charles Mountains contain deposits of iron ore . There are oil and natural gas fields in the Ross Sea. Antarctica is the coldest, windiest, and driest of Earth's continents. Near the coast, the temperature can exceed 10 °C in summer and fall to below −40 °C in winter. Over

5285-641: The Cretaceous period (146–66 Ma), though southern beech trees ( Nothofagus ) became prominent towards the end of the Cretaceous. Ammonites were common in the seas around Antarctica, and dinosaurs were also present, though only a few Antarctic dinosaur genera ( Cryolophosaurus and Glacialisaurus , from the Early Jurassic Hanson Formation of the Transantarctic Mountains, and Antarctopelta , Trinisaura , Morrosaurus and Imperobator from Late Cretaceous of

5436-573: The Discovery would be free from the ice in early 1903, enabling Scott to carry out further seaborne exploration and survey work before winter set in. It was intended that Discovery would return to New Zealand in March or April, then home to Britain via the Pacific , continuing its magnetic survey en route. Morning would provide any assistance that Scott might require during this period. This plan

5587-683: The Early Triassic . The Antarctic Peninsula began to form during the Jurassic period ( 206 to 146 million years ago ). Africa separated from Antarctica in the Jurassic around 160 Ma, followed by the Indian subcontinent in the early Cretaceous (about 125 Ma). Ginkgo trees, conifers, Bennettitales , horsetails , ferns and cycads were plentiful during the time. In West Antarctica, coniferous forests dominated throughout

5738-588: The Merchant Marine , including Albert Armitage , the second-in-command, who had experience with the Jackson–Harmsworth Arctic expedition, 1894–97 , and Ernest Shackleton , designated Third Officer in charge of holds, stores and provisions, and responsible for arranging the entertainments. The Admiralty also released around twenty petty officers and seamen, the rest of the crew being from the merchant service, or from civilian employment. Among

5889-596: The Napoleonic War . Naval interest diminished after the disappearance in 1845 of the Franklin expedition , and the many fruitless searches that followed. After the problems encountered by the 1874–76 North Pole expedition led by George Nares , and Nares's own declaration that the North Pole was "impracticable", the Admiralty decided that further polar quests would be dangerous, expensive and futile. However,

6040-526: The Northern Hemisphere , an eventual decline of fisheries in the Southern Ocean and a potential collapse of certain marine ecosystems . While many Antarctic species remain undiscovered, there are documented increases in Antarctic flora , and large fauna such as penguins are already having difficulty retaining suitable habitat. On ice-free land, permafrost thaws release greenhouse gases and formerly frozen pollution. Scientists have studied

6191-524: The Polar Plateau and became the first party to travel on it. After the return of geological and supporting parties, Scott, Evans and Lashly continued westward across the featureless plain for another eight days, covering a distance of about 150 miles to reach their most westerly point on 30 November. Having lost their navigational tables in a gale during the glacier ascent, they did not know exactly where they were, and had no landmarks to help them fix

Lashly Mountains - Misplaced Pages Continue

6342-712: The Royal Geographical Society (RGS), the new expedition carried out scientific research and geographical exploration in what was then largely an untouched continent. It launched the Antarctic careers of many who would become leading figures in the Heroic Age of Antarctic Exploration , including Robert Falcon Scott who led the expedition, Ernest Shackleton , Edward Wilson , Frank Wild , Tom Crean and William Lashly . Its scientific results covered extensive ground in biology , zoology , geology , meteorology and magnetism . The expedition discovered

6493-515: The Royal Geographical Society 's secretary (and later president) Sir Clements Markham was a former naval man who had served on one of the Franklin relief expeditions in 1851. He had accompanied Nares for part of the 1874–76 expedition, and remained a firm advocate for the navy's resuming its historic role in polar exploration. An opportunity to further this ambition arose in November 1893, when

6644-473: The Royal Society . A joint committee of the two societies was established to decide the form in which the expedition should take. Markham's vision of a full-blown naval affair after the style of Ross or Franklin was opposed by sections of the joint committee, but his tenacity was such that the expedition was eventually moulded largely to his wishes. His cousin and biographer later wrote that the expedition

6795-506: The United States Geological Survey . British National Antarctic Expedition The Discovery Expedition of 1901–1904, known officially as the British National Antarctic Expedition , was the first official British exploration of the Antarctic regions since the voyage of James Clark Ross sixty years earlier (1839–1843). Organized on a large scale under a joint committee of the Royal Society and

6946-420: The crust-like lichen Buellia frigida , has been used as a model organism in astrobiology research. The same features can be observed in algae and cyanobacteria , suggesting that they are adaptations to the conditions prevailing in Antarctica. This has led to speculation that life on Mars might have been similar to Antarctic fungi, such as Cryomyces antarcticus and Cryomyces minteri . Some of

7097-535: The ozone layer in the atmosphere above Antarctica since the 1970s. In 1985, British scientists, working on data they had gathered at Halley Research Station on the Brunt Ice Shelf , discovered a large area of low ozone concentration over Antarctica. The 'ozone hole' covers almost the whole continent and was at its largest in September 2006; the longest-lasting event occurred in 2020. The depletion

7248-543: The 1910–13 Terra Nova Expedition, and scurvy was particularly devastating to Shackleton's marooned Ross Sea party during 1915–16. It remained a danger until its causes were finally established, some 25 years after the Discovery Expedition. Scott was given leave from the Navy to write the official expedition account, The Voyage of the Discovery ; this was published in 1905, and sold well. However, Scott's account in

7399-991: The 1920s). The ship was fitted with special ventilating equipment, which reflected the importance of clean air within medical theories in this period. As she was not a Royal Naval vessel the Admiralty would not allow Discovery to fly the White Ensign . She eventually sailed under the Merchant Shipping Act, flying the RGS house flag and the Blue Ensign and burgee of the Royal Harwich Yacht Club. Scott contacted Fridtjof Nansen in Oslo, whom he trusted more than his own "quarrelling" committee in London, and followed his advice on equipment. Subsequently, Armitage ordered 25 Siberian sledge-dogs via

7550-580: The Antarctic Circle on 17 January 1773, in December 1773, and again in January 1774. Cook came within about 120 km (75 mi) of the Antarctic coast before retreating in the face of field ice in January 1773. In 1775, he called the existence of a polar continent "probable", and in another copy of his journal he wrote: "[I] firmly believe it and it's more than probable that we have seen

7701-790: The Antarctic Peninsula) have been described. During the early Paleogene , Antarctica remained connected to South America as well as to southeastern Australia. Fauna from the La Meseta Formation in the Antarctic Peninsula, dating to the Eocene , is very similar to equivalent South American faunas; with marsupials , xenarthrans , litoptern , and astrapotherian ungulates , as well as gondwanatheres and possibly meridiolestidans . Marsupials are thought to have dispersed into Australia via Antarctica by

SECTION 50

#1732797871839

7852-423: The Antarctic Peninsula, are then subjected to higher temperatures, which accelerate the melting of the ice. Models suggest that ozone depletion and the enhanced polar vortex effect may also account for the period of increasing sea ice extent, lasting from when observation started in the late 1970s until 2014. Since then, the coverage of Antarctic sea ice has decreased rapidly. Most species in Antarctica seem to be

8003-529: The Antarctic Peninsula: Deschampsia antarctica (Antarctic hair grass), Colobanthus quitensis (Antarctic pearlwort) and the non-native Poa annua (annual bluegrass). Of the 700 species of algae in Antarctica, around half are marine phytoplankton . Multicoloured snow algae are especially abundant in the coastal regions during the summer. Even sea ice can harbour unique ecological communities, as it expels all salt from

8154-482: The Barrier surface, and reached a new Furthest South at 78°50′. The Discovery Expedition was planned during a surge of international interest in the Antarctic regions at the turn of the 19th and 20th centuries. A German expedition under Erich von Drygalski was leaving at about the same time as Discovery , to explore the sector of the continent south of the Indian Ocean. The Swedish explorer Otto Nordenskiöld

8305-674: The Cambrian Period. It is built on a craton of rock, which is the basis of the Precambrian Shield . On top of the base are coal and sandstones, limestones, and shales that were laid down during the Devonian and Jurassic periods to form the Transantarctic Mountains. In coastal areas such as the Shackleton Range and Victoria Land, some faulting has occurred. Coal was first recorded in Antarctica near

8456-405: The French Légion d'honneur . Polar Medals and promotions were given to other officers and crew members. The main geographical results of the expedition were the discovery of King Edward VII Land; the ascent of the western mountains and the discovery of the Polar Plateau; the first sledge journey on the plateau; the Barrier journey to a Furthest South of 82°17′S. The island nature of Ross Island

8607-455: The Ice Barrier was a floating ice shelf, and a leaf fossil discovered by Ferrar which helped to establish Antarctica's relation to the Gondwana super-continent. Thousands of geological and biological specimens had been collected and new marine species identified. The location of the South Magnetic Pole had been calculated with reasonable accuracy. On the medical side, Wilson discovered the anti-scorbutic effects of fresh seal meat, which resolved

8758-548: The Joint Committee had, with Markham's acquiescence, secured the appointment of John Walter Gregory , Professor of Geology at the University of Melbourne and former assistant geologist at the British Museum , as the expedition's scientific director. Gregory's view, endorsed by the Royal Society faction of the Joint Committee, was that the organisation and command of the land party should be in his hands: "...The Captain would be instructed to give such assistance as required in dredging, tow-netting etc., to place boats where required at

8909-407: The Lashley formation, dating from the early to late Triassic . Phytoliths , silica plant microfossils, have been found in four samples collected from the east side of a ridge that extends southeast from Mount Crean. The phytoliths in the two Aztec Siltstone samples were probably from Archaeopteris . Conchostracans have been found together with fish remains in lake beds at Portal Mountain and in

9060-428: The Lashly Mountains on the west and Tabular Mountain and Mount Feather on the east, flowing south into The Portal. So named by the New Zealand Party of the Commonwealth Trans-Antarctic Expedition (CTAE) (1956-58) for its proximity to the Lashly Mountains. 78°06′S 159°10′E  /  78.100°S 159.167°E  / -78.100; 159.167 . A large mountain, 2,555 metres (8,383 ft) high, with

9211-647: The Lashly Mountains. 77°53′S 159°30′E  /  77.883°S 159.500°E  / -77.883; 159.500 . Massive, rocky mountain, 2,550 metres (8,370 ft) high, forming the central and highest summit of the Lashly Mountains. Named by the New Zealand Antarctic Place-Names Committee (NZ-APC) for Petty Officer Thomas Crean , Royal Navy, companion of Lashly with Scott's British National Antarctic Expedition (BrNAE) of 1901-04, and British Antarctic Expedition, 1910–13 . 77°57′S 159°50′E  /  77.950°S 159.833°E  / -77.950; 159.833 . Short, broad glacier lying between

SECTION 60

#1732797871839

9362-504: The Naval Discipline Act. The scientific team was inexperienced. Dr George Murray , Gregory's successor as chief scientist, was due to travel only as far as Australia (in fact he left the ship at Cape Town ), using the voyage to train the scientists, but with no part to play in the detailed work of the expedition. The only scientist with previous Antarctic experience was Louis Bernacchi , who had been with Borchgrevink as magnetic observer and meteorologist. The geologist, Hartley Ferrar ,

9513-406: The President of the Physical Society of London, Dr Charles Chree . Scott defended his team's work, while privately acknowledging that Royds's paperwork in this field had been "dreadfully slipshod". The expedition succeeded in combating incipient scurvy through a fresh seal meat diet, and Scott recommended it for future polar expeditions. This was despite the medical profession being ignorant of

9664-420: The Royal Geographical Society his intention to return to Antarctica, but the information was not at that stage made public. Scott was forestalled by Shackleton, who early in 1907 announced his plans to lead an expedition with the twin objectives of reaching the geographic and magnetic South Poles. Under duress, Shackleton agreed not to work from McMurdo Sound, which Scott was claiming as his own sphere of work. In

9815-413: The Societies, which lingered after the conclusion of the expedition and was reflected in criticism of the extent and quality of some of the published results. Markham claimed that his insistence on a naval command was primarily a matter of tradition and style, rather than indicating disrespect for science. He had made clear his belief that, on its own, the mere attainment of higher latitude than someone else

9966-411: The South Pole the romanised Greek name polus antarcticus , from which derived the Old French pole antartike (modern pôle antarctique ) attested in 1270, and from there the Middle English pol antartik , found first in a treatise written by the English author Geoffrey Chaucer . Belief by Europeans in the existence of a Terra Australis —a vast continent in the far south of

10117-466: The West Antarctic, the ocean has warmed by 1 °C (1.8 °F) since 1955. The warming of the Southern Ocean around Antarctica has caused the weakening or collapse of ice shelves , which float just offshore of glaciers and stabilize them. Many coastal glaciers have been losing mass and retreating, causing net-annual ice loss across Antarctica, although the East Antarctic ice sheet continues to gain ice inland. By 2100, net ice loss from Antarctica

10268-573: The argument for extraterrestrial life in cold, methane -rich environments. The first international agreement to protect Antarctica's biodiversity was adopted in 1964. The overfishing of krill (an animal that plays a large role in the Antarctic ecosystem) led officials to enact regulations on fishing. The Convention for the Conservation of Antarctic Marine Living Resources , an international treaty that came into force in 1980, regulates fisheries, aiming to preserve ecological relationships. Despite these regulations, illegal fishing —particularly of

10419-434: The bill only on their own terms. The deadline agreed between the three captains was 25 February, and it became a race against time for the relief vessels to reach Discovery , still held fast at Hut Point. As a precaution Scott began the transfer of his scientific specimens to the other ships. Explosives were used to break up the ice, and the sawing parties resumed work, but although the relief ships were able to edge closer, by

10570-416: The biodiversity in Antarctica is still at risk from human activities. Specially protected areas cover less than 2% of the area and provide better protection for animals with popular appeal than for less visible animals. There are more terrestrial protected areas than marine protected areas . Ecosystems are impacted by local and global threats, notably pollution , the invasion of non-native species , and

10721-545: The book of Shackleton's breakdown during the southern journey led to disagreement between the two men, particularly over Scott's version of the extent to which his companion had been carried on the sledge. The implication was that Shackleton's breakdown had caused the relatively unimpressive southern record. Scott eventually resumed his naval career, first as an assistant to the Director of Naval Intelligence and then, in August 1906, as Flag-captain to Rear-Admiral George Egerton on HMS Victorious . He had by this time become

10872-552: The causes of the disease. At that time it was known that a fresh meat diet could provide a cure, but not that lack of fresh meat or other fresh food containing the as yet undiscovered vitamin C was a cause. Thus, fresh seal meat was taken on the southern journey "in case we find ourselves attacked by scurvy", On his 1907–09 Nimrod expedition Shackleton also avoided the disease through careful dietary provision, including extra penguin and seal meat. However, Lieutenant Edward Evans almost died of presumably self-inflicted scurvy during

11023-584: The climate cooled, though flora remained. After deglaciation during the latter half of the Early Permian , the land became dominated by glossopterids (an extinct group of seed plants with no close living relatives), most prominently Glossopteris , a tree interpreted as growing in waterlogged soils, which formed extensive coal deposits. Other plants found in Antarctica during the Permian include Cordaitales , sphenopsids , ferns, and lycophytes . At

11174-527: The colonial authorities in Sydney officially renamed the continent of New Holland to Australia, leaving the term "Terra Australis" unavailable as a reference to Antarctica. Over the following decades, geographers used phrases such as "the Antarctic Continent". They searched for a more poetic replacement, suggesting names such as Ultima and Antipodea . Antarctica was adopted in the 1890s, with

11325-510: The continent as a World Park . The Southern Ocean Whale Sanctuary was established in 1994 by the International Whaling Commission . It covers 50 million km (19 million sq mi) and completely surrounds the Antarctic continent. All commercial whaling is banned in the zone, though Japan has continued to hunt whales in the area, ostensibly for research purposes. Despite these protections,

11476-599: The continent's edge, strong katabatic winds off of the polar plateau often blow at storm force . During the summer, more solar radiation reaches the surface at the South Pole than at the equator because of the 24 hours of sunlight received there each day. Climate change caused by greenhouse gas emissions from human activities occurs everywhere on Earth, and while Antarctica is less vulnerable to it than any other continent, climate change in Antarctica has been observed. Since 1959, there has been an average temperature increase of >0.05 °C/decade since 1957 across

11627-496: The continent, although it had been uneven. West Antarctica warmed by over 0.1 °C/decade from the 1950s to the 2000s, and the exposed Antarctic Peninsula has warmed by 3 °C (5.4 °F) since the mid-20th century. The colder, stabler East Antarctica had been experiencing cooling until the 2000s. Around Antarctica, the Southern Ocean has absorbed more oceanic heat than any other ocean, and has seen strong warming at depths below 2,000 m (6,600 ft). Around

11778-402: The creation of small yet permanent polar ice caps. As CO 2 levels declined further the ice began to spread rapidly, replacing the forests that until then had covered Antarctica. Tundra ecosystems continued to exist on Antarctica until around 14-10 million years ago, when further cooling lead to their extermination. The geology of Antarctica, largely obscured by the continental ice sheet,

11929-549: The descendants of species that lived there millions of years ago. As such, they must have survived multiple glacial cycles . The species survived the periods of extremely cold climate in isolated warmer areas , such as those with geothermal heat or areas that remained ice-free throughout the colder climate. Invertebrate life of Antarctica includes species of microscopic mites such as Alaskozetes antarcticus , lice , nematodes , tardigrades , rotifers , krill and springtails . The few terrestrial invertebrates are limited to

12080-416: The disposal of the scientific staff." In the dispute that followed, Markham argued that Scott's command of the whole expedition must be total and unambiguous, and Scott himself was insistent on this to the point of resignation. Markham's and Scott's view prevailed, and Gregory resigned, saying that the scientific work should not be "subordinated to naval adventure". This controversy soured relations between

12231-429: The dry valley as "a splendid place for growing spuds". The party reached Discovery on 24 December, after a round trip of seven hundred miles covered in 59 days. Their daily average of over 14 miles on this man-hauling journey was significantly better than that achieved with dogs on the previous season's southern journey, a fact which further strengthened Scott's prejudices against dogs. Polar historian David Crane calls

12382-582: The early Eocene. Around 53 Ma, Australia- New Guinea separated from Antarctica, opening the Tasmanian Passage . The Drake Passage opened between Antarctica and South America around 30 Ma, resulting in the creation of the Antarctic Circumpolar Current that completely isolated the continent. Models of Antarctic geography suggest that this current, as well as a feedback loop caused by lowering CO 2 levels, caused

12533-483: The edge of a cliff and was killed. His body was never recovered; a cross with a simple inscription, erected in his memory, still stands at the summit of the Hut Point promontory. During the winter months of May–August the scientists were busy in their laboratories, while elsewhere equipment and stores were prepared for the next season's work. For relaxation there were amateur theatricals, and educational activities in

12684-489: The elevated inland, it can rise to about −30 °C in summer but fall below −80 °C in winter. The lowest natural air temperature ever recorded on Earth was −89.2 °C (−128.6 °F) at the Russian Vostok Station in Antarctica on 21 July 1983. A lower air temperature of −94.7 °C (−138.5 °F) was recorded in 2010 by satellite—however, it may have been influenced by ground temperatures and

12835-406: The emperor penguin colony at close quarters. Scott had hoped on his return to find Discovery free from the ice, but she remained held fast. Work had begun with ice saws, but after 12 days' labour only two short parallel cuts of 450 feet (140 m) had been carved, with the ship still 20 miles (32 km) from open water. On 5 January 1904 the relief ship Morning returned, this time with

12986-447: The end of January Discovery remained icebound, two miles (approx. 3 km) from the rescuers. On 10 February Scott accepted that he would have to abandon her, but on 14 February most of the ice suddenly broke up, and Morning and Terra Nova were at last able to sail alongside Discovery . A final explosive charge removed the remaining ice on 16 February, and the following day, after a last scare when she became temporarily grounded on

13137-553: The end of that period. During the colder Neogene (17–2.5 Ma), a tundra ecosystem replaced the rainforests. The climate of present-day Antarctica does not allow extensive vegetation to form. A combination of freezing temperatures, poor soil quality , and a lack of moisture and sunlight inhibit plant growth, causing low species diversity and limited distribution. The flora largely consists of bryophytes (25 species of liverworts and 100 species of mosses ). There are three species of flowering plants , all of which are found in

13288-587: The end of the Permian, the climate became drier and hotter over much of Gondwana, and the glossopterid forest ecosystems collapsed, as part of the End-Permian mass extinction . There is no evidence of any tetrapods having lived in Antarctica during the Paleozoic. The continued warming dried out much of Gondwana. During the Triassic, Antarctica was dominated by seed ferns (pteridosperms) belonging to

13439-526: The engines, and the final cost after all modifications was £51,000 (£4.1 m). The name had historic naval associations, most recently as one of the ships used in the Nares expedition, and certain features of this older vessel were incorporated into the design of the new ship. She was launched by Lady Markham on 21 March 1901 as S.Y. Discovery (the Royal Research Ship designation was acquired in

13590-417: The erection of the expedition's huts on a rocky peninsula designated Hut Point . Scott had decided that the expedition should continue to live and work aboard ship, and he allowed Discovery to be frozen into the sea ice, leaving the main hut to be used as a storeroom and shelter. Of the entire party, none were skilled skiers and only Bernacchi and Armitage had any experience with dog-sledges. The results of

13741-470: The event, unable to find a safe landing elsewhere, Shackleton was forced to break this promise. His expedition was highly successful, its southern march ending at 88°23′, less than 100 geographical miles from the South Pole, while its northern party reached the location of the South Magnetic Pole. However, Shackleton's breach of his undertaking caused a significant break in relations between

13892-598: The existence of the only snow-free Antarctic valleys , which contains the longest river of Antarctica. Further achievements included the discoveries of the Cape Crozier emperor penguin colony, King Edward VII Land , and the Polar Plateau (via the western mountains route) on which the South Pole is located. The expedition tried to reach the South Pole travelling as far as the Farthest South mark at

14043-471: The expedition on its return home in 1904, and later wrote a very cordial letter to Scott. After the 1903 winter had passed, Scott prepared for the second main journey of the expedition: an ascent of the western mountains and exploration of the interior of Victoria Land. Armitage's reconnaissance party of the previous year had pioneered a route up to altitude 8,900 feet (2,700 m) before returning, but Scott wished to march west from this point, if possible to

14194-714: The expedition. Thanks largely to a donation of £25,000 from wealthy RGS member Llewellyn W. Longstaff . The RGS itself contributed £8,000, its largest single contribution to any expedition to date, and £5,000 came from Alfred Harmsworth , later Lord Northcliffe, who had earlier financed the Jackson–Harmsworth expedition to the Arctic, 1894–97. The rest was raised from smaller donations. The expedition also benefited from significant commercial sponsorship: Colman's provided mustard and flour, Cadbury's gave 3,500 lb (1,600 kg) of chocolate, Bird's donated baking and custard powders, Evans, Lescher & Webb provided all

14345-558: The field of work for many later British expeditions. Ross established the general geography of this region, and named many of its features; the Ross Sea , the Great Ice Barrier (later renamed the Ross Ice Shelf ), Ross Island , Cape Adare , Victoria Land , McMurdo Sound , Cape Crozier and the twin volcanoes Mount Erebus and Mount Terror . He returned to the Barrier several times, hoping to penetrate it, but

14496-454: The first to reach the magnetic South Pole in 1909, and the geographic South Pole was first reached in 1911 by Norwegian explorer Roald Amundsen . Antarctica is governed by about 30 countries , all of which are parties of the 1959 Antarctic Treaty System . According to the terms of the treaty, military activity, mining, nuclear explosions , and nuclear waste disposal are all prohibited in Antarctica. Tourism , fishing and research are

14647-473: The first use of the name being attributed to the Scottish cartographer John George Bartholomew . Antarctica has also been known by the moniker Great White South , after which British photographer Herbert Ponting named one of his books on Antarctic photography, possibly as a counterpart to the epithet Great White North for Canada . Positioned asymmetrically around the South Pole and largely south of

14798-511: The flights "perfect madness". Discovery then proceeded westward in search of permanent quarters. On 8 February she entered McMurdo Sound and later that day anchored in a spot near its southern limit which was afterwards christened Winter Quarters Bay . Wilson wrote: "We all realized our extreme good fortune in being led to such a winter quarter as this, safe for the ship, with perfect shelter from all ice pressure." Stoker Lashly, however, thought it looked "a dreary place." Work began ashore with

14949-487: The form of lectures. A newspaper, the South Polar Times , was edited by Shackleton. Outside pursuits did not cease altogether; there was football on the ice, and the schedule of magnetic and meteorological observations was maintained. As winter ended, trial sledge runs resumed, to test equipment and rations in advance of the planned southern journey which Scott, Wilson and Shackleton were to undertake. Meanwhile,

15100-402: The gap of 12,000 km (7,456 mi). Large animals such as some cetaceans and birds make the round trip annually. Smaller forms of life, such as sea cucumbers and free-swimming snails , are also found in both polar oceans. Factors that may aid in their distribution include temperature differences between the deep ocean at the poles and the equator of no more than 5 °C (9 °F) and

15251-502: The genus Dicroidium , which grew as trees. Other associated Triassic flora included ginkgophytes , cycadophytes , conifers , and sphenopsids. Tetrapods first appeared in Antarctica during the early Triassic , with the earliest known fossils found in the Fremouw Formation of the Transantarctic Mountains. Synapsids (also known as "mammal-like reptiles") included species such as Lystrosaurus , and were common during

15402-525: The globe to balance the northern lands of Europe, Asia, and North Africa—had existed as an intellectual concept since classical antiquity . The belief in such a land lasted until the European discovery of Australia . During the early 19th century, explorer Matthew Flinders doubted the existence of a detached continent south of Australia (then called New Holland ) and thus advocated for the "Terra Australis" name to be used for Australia instead. In 1824,

15553-582: The highly prized Patagonian toothfish which is marketed as Chilean sea bass in the U.S.—remains a problem. In analogy to the 1980 treaty on sustainable fishing , countries led by New Zealand and the United States negotiated a treaty on mining. This Convention on the Regulation of Antarctic Mineral Resource Activities was adopted in 1988. After a strong campaign from environmental organisations, first Australia and then France decided not to ratify

15704-530: The ice...your efforts as regards geographical exploration should be directed to [...] an advance to the western mountains, an advance to the south, and an exploration of the volcanic region". Discovery left Isle of Wight on 6 August 1901, and arrived in New Zealand via Cape Town on 29 November after a detour below 40°S for a magnetic survey. Quail Island in Lyttelton Harbour was used as

15855-553: The islands of the Kerguelen Plateau , the earliest of which formed around 40 Ma . Vinson Massif , in the Ellsworth Mountains , is the highest peak in Antarctica at 4,892 m (16,050 ft). Mount Erebus on Ross Island is the world's southernmost active volcano and erupts around 10 times each day. Ash from eruptions has been found 300 kilometres (190 mi) from the volcanic crater . There

16006-619: The known". The two main objectives of the expedition were summarised in the joint committee's "Instructions to the Commander" as: "to determine, as far as possible, the nature, condition and extent of that portion of the south polar lands which is included in the scope of your expedition", and "to make a magnetic survey in the southern regions to the south of the fortieth parallel and to carry out meteorological, oceanographic, geological, biological and physical investigations and researches". The instructions stipulated that "neither of these objectives

16157-429: The land predicted by Ross was confirmed, and named King Edward VII Land . On 4 February, Scott landed on the Barrier and unpacked an observation balloon which he had acquired for aerial surveys. Scott climbed aboard and rapidly ascended to above 600 feet (180 m) in the firmly tethered balloon. Shackleton followed with a second flight. All either could see was unending Barrier surface. Wilson privately thought

16308-434: The lethal threat of scurvy to this and subsequent expeditions. But the explorers were still left confused as to the exact causes of the outbreak. A general endorsement of the scientific results from the navy's Chief Hydrographer (and former Scott opponent) Sir William Wharton was encouraging. However, when the meteorological data were published their accuracy was disputed within the scientific establishment, including by

16459-580: The lime juice. Jaeger gave a 40% discount on special clothing, Bovril supplied beef extract, and others made significant contributions. The expedition's ship was built by the Dundee Shipbuilders Company as a specialist research vessel designed for work in Antarctic waters, and was one of the last three-masted wooden sailing ships built in Britain. The construction cost was £34,050 (2009 = £2.7 million), plus £10,322 (£830,000) for

16610-633: The location of the South Magnetic Pole . After a false start due to faulty sledges, a party including Scott, Lashly and Edgar Evans set out from Discovery on 26 October 1903. Ascending the Ferrar Glacier , which they named after the party's geologist, they reached a height of 7,000 feet (2,100 m) before being held in camp for a week by blizzards. This prevented them from reaching the glacier summit until 13 November. They then marched on beyond Armitage's furthest point, discovered

16761-464: The lower deck complement were some who became Antarctic veterans, including Frank Wild , William Lashly , Thomas Crean (who joined the expedition following the desertion of a seaman in New Zealand), Edgar Evans and Ernest Joyce . Although the expedition was not a formal Navy project, Scott proposed to run the expedition on naval lines, and secured the crew's voluntary agreement to work under

16912-554: The lower deck returned repeatedly to the ice, apparently unable to settle back into normal life. William Lashly and Edgar Evans, Scott's companions on the 1903 western journey, aligned themselves with their leader's future plans and became his regular sledging partners. Tom Crean followed both Scott and Shackleton on later expeditions. Lieutenant "Teddy" Evans , first officer on the relief ship Morning , began plans to lead an expedition of his own, before teaming up with Scott in 1910. Soon after resuming his naval duties, Scott revealed to

17063-467: The main human activities in and around Antarctica. During the summer months, about 5,000 people reside at research stations , a figure that drops to around 1,000 in the winter. Despite the continent's remoteness, human activity has a significant effect on it via pollution , ozone depletion , and climate change . The melting of the potentially unstable West Antarctic ice sheet causes the most uncertainty in century-scale projections of sea level rise , and

17214-814: The major current systems or marine conveyor belts which are able to transport eggs and larva . About 1,150 species of fungi have been recorded in the Antarctic region, of which about 750 are non- lichen -forming. Some of the species, having evolved under extreme conditions, have colonised structural cavities within porous rocks and have contributed to shaping the rock formations of the McMurdo Dry Valleys and surrounding mountain ridges. The simplified morphology of such fungi, along with their similar biological structures , metabolism systems capable of remaining active at very low temperatures, and reduced life cycles, make them well suited to such environments. Their thick-walled and strongly melanised cells make them resistant to UV radiation. An Antarctic endemic species,

17365-671: The many Antarctic ice shelves , a process described by ice-sheet dynamics . East Antarctica comprises Coats Land , Queen Maud Land , Enderby Land , Mac . Robertson Land , Wilkes Land , and Victoria Land. All but a small portion of the region lies within the Eastern Hemisphere . East Antarctica is largely covered by the East Antarctic Ice Sheet . There are numerous islands surrounding Antarctica, most of which are volcanic and very young by geological standards. The most prominent exceptions to this are

17516-417: The men's early efforts to master these techniques were not encouraging, and tended to reinforce Scott's preference for man-hauling . The dangers of the unfamiliar conditions were confirmed when, on 11 March, a party returning from an attempted journey to Cape Crozier became stranded on an icy slope during a blizzard. In their attempts to find safer ground, one of the group, Able Seaman George Vince, slid over

17667-587: The north'). Antarcticus is derived from the Greek ἀντι- ('anti-') and ἀρκτικός ('of the Bear ', 'northern'). The Greek philosopher Aristotle wrote in Meteorology about an "Antarctic region" in c.  350 BCE . The Greek geographer Marinus of Tyre reportedly used the name in his world map from the second century CE, now lost. The Roman authors Gaius Julius Hyginus and Apuleius used for

17818-578: The ocean around Antarctica, including some that normally reside in the Arctic. The emperor penguin is the only penguin that breeds during the winter in Antarctica; it and the Adélie penguin breed farther south than any other penguin. A Census of Marine Life by some 500 researchers during the International Polar Year was released in 2010. The research found that more than 235 marine organisms live in both polar regions, having bridged

17969-406: The other half), thus travelling three miles for every mile of southward progress. Mistakes had been made with the dogs' food, and as the dogs grew weaker, Wilson was forced to kill the weakest as food for the others. The men, too, were struggling, afflicted by snow blindness , frostbite and symptoms of early scurvy, but they continued southwards in line with the mountains to the west. Christmas Day

18120-474: The party when it arrived in London a few days later. However, there was considerable public enthusiasm for the expedition, and official recognition followed. Scott was quickly promoted to captain , and invited to Balmoral Castle to meet King Edward VII, who invested him as a Commander of the Royal Victorian Order (CVO). He also received a cluster of medals and awards from overseas, including

18271-470: The prominent biologist Sir John Murray , who had visited Antarctic waters as a biologist with the Challenger Expedition in the 1870s, addressed the RGS. Murray presented a paper entitled "The Renewal of Antarctic Exploration", and called for a full-scale expedition for the benefit of British science. This was strongly supported, both by Markham and by the country's premier scientific body,

18422-478: The qualities of calmness, patience and detachment that the captain reportedly lacked. The total cost of the expedition was estimated at £90,000 (2009 equivalent about £7.25 million), of which £45,000 was offered by the British Government provided that the two Societies could raise a matching sum. Lord Curzon and Edward Somers Cocks, Treasurer of the society played important roles in the finance of

18573-489: The quarantine station for the expedition's dogs. After three weeks of final preparation she was ready for the journey south. On 21 December, as the ship was leaving Lyttelton to the cheers of large crowds, a young able seaman , Charles Bonner, fell to his death from the top of the mainmast, which he had climbed so as to return the crowd's applause. He was buried at Port Chalmers , two days later. Discovery then sailed south, arriving at Cape Adare on 9 January 1902. After

18724-424: The record for the lowest measured temperature on Earth , −89.2 °C (−128.6 °F). The coastal regions can reach temperatures over 10 °C (50 °F) in the summer. Native species of animals include mites , nematodes , penguins , seals and tardigrades . Where vegetation occurs, it is mostly in the form of lichen or moss . The ice shelves of Antarctica were probably first seen in 1820, during

18875-566: The region, in the Southern Cross . This expedition was financed by a donation of £35,000 from British publishing magnate Sir George Newnes , on condition that the venture be called the "British Antarctic Expedition". Borchgrevink landed at Cape Adare in February 1899, erected a small hut, and spent the 1899 winter there. The following summer he sailed south, landing at Ross's inlet on the Barrier. A party of three then sledged southward on

19026-539: The saline Antarctic bottom water , weakening the lower cell of the Southern Ocean overturning circulation (SOOC). According to some research, a full collapse of the SOOC may occur a between 1.7 °C (3.1 °F) and 3 °C (5.4 °F) of global warming, although the full effects are expected to occur over multiple centuries; these include less precipitation in the Southern Hemisphere but more in

19177-480: The same melting also affects the Southern Ocean overturning circulation , which can eventually lead to significant impacts on the Southern Hemisphere climate and Southern Ocean productivity. The name given to the continent originates from the word antarctic , which comes from Middle French antartique or antarctique ('opposite to the Arctic ') and, in turn, the Latin antarcticus ('opposite to

19328-406: The species of fungi, which are apparently endemic to Antarctica, live in bird dung, and have evolved so they can grow inside extremely cold dung, but can also pass through the intestines of warm-blooded animals. Throughout its history, Antarctica has seen a wide variety of plant life. In the Cretaceous , it was dominated by a fern- conifer ecosystem, which changed into a temperate rainforest by

19479-683: The sub-Antarctic islands. The flightless midge Belgica antarctica , the largest purely terrestrial animal in Antarctica, reaches 6 mm ( 1 ⁄ 4  in) in size. Antarctic krill , which congregates in large schools , is the keystone species of the ecosystem of the Southern Ocean, being an important food organism for whales, seals, leopard seals , fur seals, squid , icefish , and many bird species, such as penguins and albatrosses . Some species of marine animals exist and rely, directly or indirectly, on phytoplankton . Antarctic sea life includes penguins , blue whales , orcas , colossal squids and fur seals . The Antarctic fur seal

19630-592: The treaty. Instead, countries adopted the Protocol on Environmental Protection to the Antarctic Treaty (the Madrid Protocol), which entered into force in 1998. The Madrid Protocol bans all mining, designating the continent as a "natural reserve devoted to peace and science". The pressure group Greenpeace established a base on Ross Island from 1987 to 1992 as part of its attempt to establish

19781-668: The two men, with Scott dismissing his former companion as a liar and a rogue. Scott's plans gradually came to fruition – a large-scale scientific and geographical expedition with the conquest of the South Pole as its principal objective. Scott was anxious to avoid the amateurism that had been associated with the Discovery Expedition's scientific work. He appointed Edward Wilson as his chief scientist, and Wilson selected an experienced team. The expedition set off in June 1910 in Terra Nova , one of Discovery's relief ships. Its programme

19932-470: The various effects of climate change . Early world maps, like the 1513 Piri Reis map , feature the hypothetical continent Terra Australis . Much larger than and unrelated to Antarctica, Terra Australis was a landmass that classical scholars presumed necessary to balance the known lands in the northern hemisphere. Captain James Cook 's ships, HMS  Resolution and Adventure , crossed

20083-412: The water when it freezes, which accumulates into pockets of brine that also harbour dormant microorganisms. When the ice begins to melt, brine pockets expand and can combine to form brine channels, and the algae inside the pockets can reawaken and thrive until the next freeze. Bacteria have also been found as deep as 800 m (0.50 mi) under the ice. It is thought to be likely that there exists

20234-477: The western journey "one of the great journeys of polar history". Several other journeys were completed during Scott's absence. Royds and Bernacchi travelled for 31 days on the Barrier in a SE direction, observing its uniformly flat character and making further magnetic readings. Another party had explored the Koettlitz Glacier to the south-west, and Wilson had travelled to Cape Crozier to observe

20385-484: Was "the creation of his brain, the product of his persistent energy". It had long been Markham's practice to take note of promising young naval officers who might later be suitable for polar responsibilities, should the opportunity arise. He had first observed Midshipman Robert Falcon Scott in 1887, while the latter was serving with HMS Rover in St Kitts , and had remembered him. Thirteen years later, Scott, by now

20536-540: Was "to get as far south in a straight line on the Barrier ice as we can, reach the Pole if possible, or find some new land". The first significant milestone was passed on 11 November, when a supporting party passed Borchgrevink's Farthest South record of 78°50′. However, the lack of skill with dogs was soon evident, and progress was slow. After the support parties had returned, on 15 November, Scott's group began relaying their loads (taking half loads forward, then returning for

20687-467: Was "unworthy of support." Markham had hoped for a fully-fledged Royal Naval expedition, but was warned by the Admiralty that "the present exigencies of the Naval Service [would] prevent them from lending officers..." However, the Admiralty agreed to release Scott and Charles Royds , and later allowed Michael Barne and Reginald Skelton to join the expedition. The remaining officers were from

20838-453: Was a 22-year-old recent Cambridge graduate who Markham thought "might be made into a man." Marine biologist Thomas Vere Hodgson , from Plymouth Museum, was a more mature figure, as was the senior of the two doctors, Reginald Koettlitz , who, at 39, was the oldest member of the expedition. He, like Armitage, had been with the Jackson–Harmsworth expedition. The junior doctor and zoologist was Edward Wilson , who became close to Scott and provided

20989-504: Was celebrated with double rations, and a Christmas pudding that Shackleton had kept for the occasion, hidden with his socks. On 30 December 1902, without having left the Barrier, they reached their Furthest South at 82°17′S. Troubles multiplied on the home journey, as the remaining dogs died and Shackleton collapsed with scurvy. Wilson's diary entry for 14 January 1903 acknowledged that "we all have slight, though definite symptoms of scurvy". Scott and Wilson struggled on, with Shackleton, who

21140-454: Was complicated by the simultaneous arrival in the Antarctic of Roald Amundsen 's Norwegian expedition. Amundsen's party reached the South Pole on 14 December 1911 and returned safely. Scott and four companions, including Wilson, arrived at the Pole on 17 January 1912; all five perished on the return journey. Notes References Online sources Antarctica Antarctica ( / æ n ˈ t ɑːr k t ɪ k ə / )

21291-529: Was cooler, though fossils of land plants are known from then. Sand and silts were laid down in what is now the Ellsworth, Horlick , and Pensacola Mountains . Antarctica became glaciated during the Late Paleozoic icehouse beginning at the end of the Devonian period (360 Ma), though glaciation would substantially increase during the late Carboniferous . It drifted closer to the South Pole, and

21442-464: Was established, the Transantarctic Mountains were charted to 83°S, and the positions and heights of more than 200 individual mountains were calculated. Many other features and landmarks were also identified and named, and there was extensive coastal survey work. There were also discoveries of major scientific importance. These included the snow-free Dry Valleys in the western mountains, the emperor penguin colony at Cape Crozier, scientific evidence that

21593-485: Was frustrated, as Discovery remained firmly icebound. Markham had privately anticipated this, and Morning' s captain, William Colbeck , was carrying a secret letter to Scott authorising another year in the ice. This now being inevitable, the relief ship provided an opportunity for some of the party to return home. Among these, against his will, was the convalescent Shackleton, who Scott decided "ought not to risk further hardships in his present state of health". Stories of

21744-645: Was leading an expedition to Graham Land , and a French expedition under Jean-Baptiste Charcot was going to the Antarctic Peninsula . Finally, the British scientist William Speirs Bruce was leading a scientific expedition to the Weddell Sea . Under the influence of John Barrow , Second Secretary to the Admiralty , polar exploration had become the province of the peacetime Royal Navy after

21895-472: Was not recorded at a height of 2 m (7 ft) above the surface as required for official air temperature records. Antarctica is a polar desert with little precipitation ; the continent receives an average equivalent to about 150 mm (6 in) of water per year, mostly in the form of snow. The interior is dryer and receives less than 50 mm (2 in) per year, whereas the coastal regions typically receive more than 200 mm (8 in). In

22046-526: Was quickly revised, and the trouble was thereafter contained. Nevertheless, the scurvy outbreak did cause concern about the expedition's safety when news of it reached Britain, leading to demands for a relief expedition. For instance, The Yorkshire Evening Post claimed that ‘the lives of the gallant explorers and scientific staff of the Discovery may actually be in peril if they have to stay out for another winter.’ Scott, Wilson and Shackleton left on 2 November 1902 with dogs and supporting parties. Their goal

22197-463: Was secured by 25 May 1900, followed swiftly by his promotion to commander . The command structure of the expedition had still to be settled. Markham had been determined from the beginning that its overall leader should be a naval officer, not a scientist. Scott, writing to Markham after his appointment, reiterated that he "must have complete command of the ship and landing parties", and insisted on being consulted over all future appointments. However,

22348-403: Was to be sacrificed to the other". The instructions concerning the geographical objective became more specific: "The chief points of geographical interest are [...] to explore the ice barrier of Sir James Ross to its eastern extremity; to discover the land which was believed by Ross to flank the barrier to the eastward, or to ascertain that it does not exist [...] If you should decide to winter in

22499-528: Was unable to do so, achieving his Farthest South in a small Barrier inlet at 78°10′, in February 1842. Ross suspected that land lay to the east of the Barrier, but was unable to confirm this. After Ross there were no recorded voyages into this sector of the Antarctic for fifty years. Then, in January 1895, a Norwegian whaling trip made a brief landing at Cape Adare, the northernmost tip of Victoria Land. Four years later Carsten Borchgrevink , who had participated in that landing, took his own expedition to

22650-418: Was unable to pull, walking alongside and occasionally carried on the sledge. The party eventually reached the ship on 3 February 1903 after covering 960 miles (1,540 km) including relays, in 93 days' travel at a daily average of just over 10 miles (16 km). During the southern party's absence the relief ship Morning arrived, bringing fresh supplies. The expedition's organisers had assumed that

22801-503: Was very heavily hunted in the 18th and 19th centuries for its pelt by seal hunters from the United States and the United Kingdom. Leopard seals are apex predators in the Antarctic ecosystem and migrate across the Southern Ocean in search of food. There are approximately 40 bird species that breed on or close to Antarctica, including species of petrels , penguins , cormorants , and gulls . Various other bird species visit

#838161