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106-463: The Roman road Via Julia from Augsburg to Salzburg runs through Gilching. Celtic tumuli and nemetons are found in the nearby forest between Gilching and Schöngeising . The parish church St. Vitus holds a bell, the Arnoldusglocke, the oldest extant bell of Germany. It was cast between 1180 and 1187, commissioned by minister Arnoldus. This Starnberg district location article

212-454: A proglacial lake above the valley created by an ice dam as a result of the 1815 eruption of Mount Tambora , which threatened to cause a catastrophic flood when the dam broke. Perraudin attempted unsuccessfully to convert his companions to his theory, but when the dam finally broke, there were only minor erratics and no striations, and Venetz concluded that Perraudin was right and that only ice could have caused such major results. In 1821 he read

318-569: A siege ensued through the winter of 1634/35 and thousands died from hunger and disease. During the Swedish occupation and the siege by Catholic troops, the population of the city was reduced from about 70,000 to about 16,000. Diseases such as typhus and the plague ravaged the city. In the first half of the 17th century Augsburg was pivotal in the European network of goldsmiths . Augsburg attracted goldsmith journeymen from all over Europe and in

424-526: A fertilizer that causes massive algal blooms that pulls large amounts of CO 2 out of the atmosphere. This in turn makes it even colder and causes the glaciers to grow more. In 1956, Ewing and Donn hypothesized that an ice-free Arctic Ocean leads to increased snowfall at high latitudes. When low-temperature ice covers the Arctic Ocean there is little evaporation or sublimation and the polar regions are quite dry in terms of precipitation, comparable to

530-570: A geologist and professor of forestry at an academy in Dreissigacker (since incorporated in the southern Thuringian city of Meiningen ), adopted Esmark's theory. In a paper published in 1832, Bernhardi speculated about the polar ice caps once reaching as far as the temperate zones of the globe. In Val de Bagnes , a valley in the Swiss Alps , there was a long-held local belief that the valley had once been covered deep in ice, and in 1815

636-627: A large forestland. The city itself is also heavily verdant. As a result, in 1997 Augsburg was the first German city to win the Europe-wide contest Entente Florale for Europe's greenest and most livable city. Augsburg is surrounded by the counties Landkreis Augsburg in the west and Aichach-Friedberg in the east. The suburbs of Augsburg are Friedberg , Königsbrunn , Stadtbergen , Neusäß , Gersthofen , Diedorf . Neighbouring municipalities: Rehling , Affing , Kissing , Mering , Merching , Bobingen , Gessertshausen . The city of Augsburg

742-408: A local chamois hunter called Jean-Pierre Perraudin attempted to convert the geologist Jean de Charpentier to the idea, pointing to deep striations in the rocks and giant erratic boulders as evidence. Charpentier held the general view that these signs were caused by vast floods, and he rejected Perraudin's theory as absurd. In 1818 the engineer Ignatz Venetz joined Perraudin and Charpentier to examine

848-633: A mixed Catholic–Protestant city council presided over a majority Protestant population; see Paritätische Reichsstadt . Augsburg's economic boom years occurred during the 15th and 16th centuries thanks to the bank and metal businesses of the merchant families Fugger , Welser and Hochstetter . These families held a near total monopoly in important industries. Monopolies were considered criminal in contemporary laws and these families' practices were criticised by Martin Luther himself, but as Emperor Charles V needed their financial assistance, he cancelled

954-467: A molten globe. In order to persuade the skeptics, Agassiz embarked on geological fieldwork. He published his book Study on Glaciers ("Études sur les glaciers") in 1840. Charpentier was put out by this, as he had also been preparing a book about the glaciation of the Alps. Charpentier felt that Agassiz should have given him precedence as it was he who had introduced Agassiz to in-depth glacial research. As

1060-619: A population of 100,000, as per the Bavarian Gemeindeordnung . The mayor of Augsburg has been Eva Weber of the Christian Social Union (CSU) since 2020. The most recent mayoral election was held on 15 March 2020, with a runoff held on 29 March, and the results were as follows: The Augsburg city council governs the city alongside the Mayor. The most recent city council election was held on 15 March 2020, and

1166-721: A population of about 30,000. This put it on a level with cities like Cologne and Prague . Augsburg passed 100,000 residents in 1909 and the population has grown steadily since then. Augsburg is twinned with: The main road link is autobahn A 8 between Munich and Stuttgart . Public transport is very well catered for. It is controlled by the Augsburger Verkehrs- und Tarifverbund (Augsburg transport and tariff association, AVV) extended over central Swabia. There are seven rail Regionalbahn lines, five tram lines, 27 city bus lines and six night bus lines, as well as several taxi companies. The Augsburg tramway network

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1272-544: A prize-winning paper on the theory to the Swiss Society, but it was not published until Charpentier, who had also become converted, published it with his own more widely read paper in 1834. In the meantime, the German botanist Karl Friedrich Schimper (1803–1867) was studying mosses which were growing on erratic boulders in the alpine upland of Bavaria. He began to wonder where such masses of stone had come from. During

1378-764: A regional phenomenon. Only a few years later, the Danish-Norwegian geologist Jens Esmark (1762–1839) argued for a sequence of worldwide ice ages. In a paper published in 1824, Esmark proposed changes in climate as the cause of those glaciations. He attempted to show that they originated from changes in Earth's orbit. Esmark discovered the similarity between moraines near Haukalivatnet lake near sea level in Rogaland and moraines at branches of Jostedalsbreen . Esmark's discovery were later attributed to or appropriated by Theodor Kjerulf and Louis Agassiz . During

1484-499: A result of personal quarrels, Agassiz had also omitted any mention of Schimper in his book. It took several decades before the ice age theory was fully accepted by scientists. This happened on an international scale in the second half of the 1870s, following the work of James Croll , including the publication of Climate and Time, in Their Geological Relations in 1875, which provided a credible explanation for

1590-411: A significant causal factor of the 40 million year Cenozoic Cooling trend. They further claim that approximately half of their uplift (and CO 2 "scrubbing" capacity) occurred in the past 10 million years. There is evidence that greenhouse gas levels fell at the start of ice ages and rose during the retreat of the ice sheets, but it is difficult to establish cause and effect (see the notes above on

1696-405: A smaller Kaserne for former Luftwaffe communications units. The American military presence in the city started with the U.S. 5th Infantry Division stationed at FLAK Kaserne from 1945 to 1955, then by 11th Airborne Division , followed by the 24th Infantry Division , U.S. Army VII Corps artillery, USASA Field Station Augsburg and finally the 66th Military Intelligence Brigade , which returned

1802-519: Is a stub . You can help Misplaced Pages by expanding it . Augsburg Augsburg ( UK : / ˈ aʊ ɡ z b ɜːr ɡ / OWGZ -burg , US : / ˈ ɔː ɡ z -/ AWGZ - , German: [ˈaʊksbʊʁk] ; Swabian German : Ougschburg ) is a city in the Bavarian part of Swabia , Germany, around 50 kilometres (31 mi) west of the Bavarian capital Munich . It

1908-637: Is a university town and the regional seat of the Regierungsbezirk Swabia with a well preserved Altstadt (historical city centre). Augsburg is an urban district and home to the institutions of the Landkreis Augsburg . It is the third-largest city in Bavaria (after Munich and Nuremberg ), with a population of 304,000 and 885,000 in its metropolitan area. After Neuss , Trier , Worms , Cologne and Xanten , Augsburg

2014-578: Is estimated to potentially outweigh the orbital forcing of the Milankovitch cycles for hundreds of thousands of years. Each glacial period is subject to positive feedback which makes it more severe, and negative feedback which mitigates and (in all cases so far) eventually ends it. An important form of feedback is provided by Earth's albedo , which is how much of the sun's energy is reflected rather than absorbed by Earth. Ice and snow increase Earth's albedo, while forests reduce its albedo. When

2120-681: Is now 35.5 km-long after the opening of new lines to the university in 1996, the northern city boundary in 2001 and to the Klinikum Augsburg (Augsburg hospital) in 2002. Tram line 6, which runs 5.2 km from Friedberg West to Hauptbahnhof (Central Station), opened in December 2010. In December 2021, tram line 3 was extended southward to the neighboring city of Königsbrunn . There is one station for intercity bus services in Augsburg: Augsburg Nord, located in

2226-529: Is on the Munich–Augsburg and Ulm–Augsburg lines and is connected by ICE and IC services to Munich , Berlin , Dortmund , Frankfurt , Hamburg and Stuttgart . As of December 2007, the French TGV connected Augsburg with a direct High Speed Connection to Paris . In addition EC and night train services connect to Amsterdam , Paris and Vienna and connections will be substantially improved by

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2332-545: Is one of Germany's oldest cities, founded in 15 BC by the Romans as Augusta Vindelicorum and named after the Roman emperor Augustus . It was a Free Imperial City from 1276 to 1803 and the home of the patrician Fugger and Welser families that dominated European banking in the 16th century. According to Behringer, in the sixteenth century it became "the dominant centre of early capitalism", having benefited from being part of

2438-597: Is that several factors are important: atmospheric composition , such as the concentrations of carbon dioxide and methane (the specific levels of the previously mentioned gases are now able to be seen with the new ice core samples from the European Project for Ice Coring in Antarctica (EPICA) Dome C in Antarctica over the past 800,000 years); changes in Earth's orbit around the Sun known as Milankovitch cycles ;

2544-516: Is the increased aridity occurring with glacial maxima, which reduces the precipitation available to maintain glaciation. The glacial retreat induced by this or any other process can be amplified by similar inverse positive feedbacks as for glacial advances. According to research published in Nature Geoscience , human emissions of carbon dioxide (CO 2 ) will defer the next glacial period. Researchers used data on Earth's orbit to find

2650-655: The Carboniferous and early Permian periods. Correlatives are known from Argentina, also in the center of the ancient supercontinent Gondwanaland . Although the Mesozoic Era retained a greenhouse climate over its timespan and was previously assumed to have been entirely glaciation-free, more recent studies suggest that brief periods of glaciation occurred in both hemispheres during the Early Cretaceous . Geologic and palaeoclimatological records suggest

2756-643: The Dachau concentration camp outside Augsburg supplied approximately 1,300 forced labourers to local military-related industry, especially the Messerschmitt AG military aircraft firm, headquartered in Augsburg. In 1941 Rudolf Hess , without Adolf Hitler 's permission, secretly took off from a local Augsburg airport and flew to Scotland, crashing in Eaglesham , to the south of Glasgow. His objective

2862-850: The Dutch Republic . The coalition was formed to defend the Electorate of the Palatinate and fought against France in the Nine Years' War . The Reichsdeputationshauptschluss or the Final Recess of 1803, saw the annexation of nearly all of the 51 Free Imperial Cities, excepting Augsburg and five others. However, when the Holy Roman Empire was dissolved in 1806, Napoleon encouraged his German allies to annex their smaller neighbours, and Augsburg lost its independence. It

2968-683: The Himalayas are a major factor in the current ice age, because these mountains have increased Earth's total rainfall and therefore the rate at which carbon dioxide is washed out of the atmosphere, decreasing the greenhouse effect. The Himalayas' formation started about 70 million years ago when the Indo-Australian Plate collided with the Eurasian Plate , and the Himalayas are still rising by about 5 mm per year because

3074-636: The Kaiserliche Reichspost system as "the location of the most important post office within the Holy Roman Empire" and the city's close connection to Maximilian I . The city played a leading role in the Reformation as the site of the 1530 Augsburg Confession and the 1555 Peace of Augsburg . The Fuggerei , the oldest social housing complex in the world, was founded in 1513 by Jakob Fugger . In 2019 UNESCO recognised

3180-765: The Late Ordovician and the Silurian period. The evolution of land plants at the onset of the Devonian period caused a long term increase in planetary oxygen levels and reduction of CO 2 levels, which resulted in the late Paleozoic icehouse . Its former name, the Karoo glaciation, was named after the glacial tills found in the Karoo region of South Africa. There were extensive polar ice caps at intervals from 360 to 260 million years ago in South Africa during

3286-482: The Pleistocene Ice Age. Because this highland is at a subtropical latitude, with four to five times the insolation of high-latitude areas, what would be Earth's strongest heating surface has turned into a cooling surface. Kuhle explains the interglacial periods by the 100,000-year cycle of radiation changes due to variations in Earth's orbit. This comparatively insignificant warming, when combined with

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3392-715: The Turonian , otherwise the warmest period of the Phanerozoic, are disputed), ice sheets and associated sea ice appear to have briefly returned to Antarctica near the very end of the Maastrichtian just prior to the Cretaceous-Paleogene extinction event . The Quaternary Glaciation / Quaternary Ice Age started about 2.58 million years ago at the beginning of the Quaternary Period when

3498-583: The 0 °C isotherm, a humid continental climate ( Dfb ). The water systems of Augsburg have been the site of innovations in hydraulic engineering for centuries. Augsburg was built on top of an aquifer fed by the Lech and Wertach rivers, which provided purified groundwater that ran through the city through springs and streams. The canals channelling this water through the city were first mentioned in 1276, and by 1416 waterworks, pumps and water towers were added to distribute this water effectively. In 1545 Augsburg

3604-415: The 1490s onwards, as official members of the court of Maximilian I). Several witch hunts occurred in Augsburg in the late 16th century. Following the 1585–1588 plague epidemic, southeast Germany was shattered by the 1589–1591 witch hunts. Following the 1592–1593 plague epidemic, cities in southeast Germany entered a period of inflation , marked by brutal witch hunts in urban areas. Religious peace in

3710-635: The 18th century a large number of silversmiths and goldsmiths became master craftsman in Augsburg. In 1686 the Holy Roman Emperor Leopold I formed the League of Augsburg , also known as the "Grand Alliance" after England joined in 1689. The coalition consisted at various times of Austria, Bavaria , Brandenburg , England, the Holy Roman Empire , the Electorate of the Palatinate , Portugal, Savoy , Saxony , Spain, Sweden, and

3816-618: The Atlantic, increasing heat transport into the Arctic, which melted the polar ice accumulation and reduced other continental ice sheets. The release of water raised sea levels again, restoring the ingress of colder water from the Pacific with an accompanying shift to northern hemisphere ice accumulation. According to a study published in Nature in 2021, all glacial periods of ice ages over

3922-497: The Bavarian State Government recognised this fact and promoted Augsburg to Metropole . Ice age An ice age is a long period of reduction in the temperature of Earth 's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers . Earth's climate alternates between ice ages, and greenhouse periods during which there are no glaciers on

4028-762: The Bernese Oberland advocated a similar idea in a discussion with the Swiss-German geologist Jean de Charpentier (1786–1855) in 1834. Comparable explanations are also known from the Val de Ferret in the Valais and the Seeland in western Switzerland and in Goethe 's scientific work . Such explanations could also be found in other parts of the world. When the Bavarian naturalist Ernst von Bibra (1806–1878) visited

4134-463: The Chilean Andes in 1849–1850, the natives attributed fossil moraines to the former action of glaciers. Meanwhile, European scholars had begun to wonder what had caused the dispersal of erratic material. From the middle of the 18th century, some discussed ice as a means of transport. The Swedish mining expert Daniel Tilas (1712–1772) was, in 1742, the first person to suggest drifting sea ice

4240-557: The German re-armament before the Second World War , the Wehrmacht enlarged Augsburg's one original Kaserne (barracks) to three: Somme Kaserne (housing Wehrmacht Artillerie-Regiment 27); Arras Kaserne (housing Wehrmacht Infanterie Regiment 27) and Panzerjäger Kaserne (housing Panzerabwehr-Abteilung 27 (later Panzerjäger-Abteilung 27)). Wehrmacht Panzerjäger-Abteilung 27 was later moved to Füssen . The MAN factory at Augsburg

4346-562: The Habsburg empire began to extend to other parts of Europe, Maximilian's loyalty to Augsburg, where he conducted a lot of his endeavours, meant that the imperial city became "the dominant centre of early capitalism" of the sixteenth century, and "the location of the most important post office within the Holy Roman Empire". From Maximilian's time, as the "terminuses of the first transcontinental post lines" began to shift from Innsbruck to Venice and from Brussels to Antwerp , in these cities,

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4452-467: The Indo-Australian plate is still moving at 67 mm/year. The history of the Himalayas broadly fits the long-term decrease in Earth's average temperature since the mid-Eocene , 40 million years ago. Another important contribution to ancient climate regimes is the variation of ocean currents, which are modified by continent position, sea levels and salinity, as well as other factors. They have

4558-579: The North Atlantic Ocean far enough to block the Gulf Stream. Ice sheets that form during glaciations erode the land beneath them. This can reduce the land area above sea level and thus diminish the amount of space on which ice sheets can form. This mitigates the albedo feedback, as does the rise in sea level that accompanies the reduced area of ice sheets, since open ocean has a lower albedo than land. Another negative feedback mechanism

4664-603: The North Atlantic during a warming cycle may also reduce the global ocean water circulation . Such a reduction (by reducing the effects of the Gulf Stream ) would have a cooling effect on northern Europe, which in turn would lead to increased low-latitude snow retention during the summer. It has also been suggested that during an extensive glacial, glaciers may move through the Gulf of Saint Lawrence , extending into

4770-544: The Swiss Alps with his former university friend Louis Agassiz (1801–1873) and Jean de Charpentier. Schimper, Charpentier and possibly Venetz convinced Agassiz that there had been a time of glaciation. During the winter of 1836–37, Agassiz and Schimper developed the theory of a sequence of glaciations. They mainly drew upon the preceding works of Venetz, Charpentier and on their own fieldwork. Agassiz appears to have been already familiar with Bernhardi's paper at that time. At

4876-597: The Water Management System of Augsburg as a World Heritage Site because of its unique medieval canals and water towers and its testimony to the development of hydraulic engineering. Augsburg lies at the convergence of the Alpine rivers Lech and Wertach and on the Singold . The oldest part of the city and the southern quarters are on the northern foothills of a high terrace, which has emerged between

4982-621: The ability to cool (e.g. aiding the creation of Antarctic ice) and the ability to warm (e.g. giving the British Isles a temperate as opposed to a boreal climate). The closing of the Isthmus of Panama about 3 million years ago may have ushered in the present period of strong glaciation over North America by ending the exchange of water between the tropical Atlantic and Pacific Oceans. Analyses suggest that ocean current fluctuations can adequately account for recent glacial oscillations. During

5088-575: The administrative capital of the Roman province of Raetia . Augsburg was sacked by the Huns in the fifth century AD, by Charlemagne in the eighth century and by Welf I, Duke of Bavaria in the 11th century. Augsburg was granted the status of a Free Imperial City on 9 March 1276 and from then until 1803, it was independent of its former overlord, the Prince-Bishop of Augsburg . Frictions between

5194-402: The air temperature decreases, ice and snow fields grow, and they reduce forest cover. This continues until competition with a negative feedback mechanism forces the system to an equilibrium. One theory is that when glaciers form, two things happen: the ice grinds rocks into dust, and the land becomes dry and arid. This allows winds to transport iron rich dust into the open ocean, where it acts as

5300-547: The airport is used almost entirely by business airplanes. Augsburg is a vibrant industrial city. Many global market leaders namely MAN , EADS or KUKA produce high technology products like printing systems, large diesel engines, industrial robots or components for the Airbus A380 and the Ariane carrier rocket. After Munich , Augsburg is considered the high-tech centre for Information and Communication in Bavaria and takes advantage of its lower operating costs , yet close proximity to Munich and potential customers. In 2018

5406-424: The amount found in mid-latitude deserts . This low precipitation allows high-latitude snowfalls to melt during the summer. An ice-free Arctic Ocean absorbs solar radiation during the long summer days, and evaporates more water into the Arctic atmosphere. With higher precipitation, portions of this snow may not melt during the summer and so glacial ice can form at lower altitudes and more southerly latitudes, reducing

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5512-475: The base of two banking families that rose to great prominence, the Fuggers and the Welsers . The Fugger family donated the Fuggerei part of the city devoted to housing for needy citizens in 1516, which remains in use today. In 1530, the Augsburg Confession was presented to the Holy Roman Emperor at the Diet of Augsburg . Following the Peace of Augsburg in 1555, after which the rights of religious minorities in imperial cities were to be legally protected,

5618-474: The beginning of 1837, Schimper coined the term "ice age" ( "Eiszeit" ) for the period of the glaciers. In July 1837 Agassiz presented their synthesis before the annual meeting of the Swiss Society for Natural Research at Neuchâtel. The audience was very critical, and some were opposed to the new theory because it contradicted the established opinions on climatic history. Most contemporary scientists thought that Earth had been gradually cooling down since its birth as

5724-495: The causes of ice ages. There are three main types of evidence for ice ages: geological, chemical, and paleontological. Geological evidence for ice ages comes in various forms, including rock scouring and scratching, glacial moraines , drumlins , valley cutting, and the deposition of till or tillites and glacial erratics . Successive glaciations tend to distort and erase the geological evidence for earlier glaciations, making it difficult to interpret. Furthermore, this evidence

5830-403: The charge in the 1530s. In the 16th century Augsburg became one of Germany's largest cities. Augsburg was a major manufacturing centre for textiles , armor , scientific instruments , as well as gold- and silver-smithing. The prolific printers of Augsburg also made the city the largest producer of German-language books in the Holy Roman Empire . Like other free imperial cities , Augsburg

5936-508: The city was largely maintained despite increasing tensions up to the Thirty Years' War (1618–1648). In 1629, the Holy Roman Emperor Ferdinand II issued the Edict of Restitution , which restored the legal situation of 1552. However, the edict was revoked in April 1632, when Gustavus Adolphus of Sweden occupied Augsburg. In 1634, the Swedish army was defeated at the nearby Battle of Nördlingen . By October 1634, Catholic troops had surrounded Augsburg. The Swedish army refused to surrender and

6042-401: The city-state and the prince-bishops were to remain frequent however, particularly after Augsburg became Protestant and curtailed the rights and freedoms of Catholics . With its strategic location at an intersection of trade routes to Italy, the Free Imperial City of Augsburg became a major trading centre. Augsburg produced large quantities of woven goods, cloth and textiles. Augsburg became

6148-402: The communication system and the news market started to converge. As the Fuggers as well as other trading companies based their most important branches in these cities, these traders gained access to these systems as well (despite a widely circulated theory which holds that the Fuggers themselves operated their own communication system, in reality they relied upon the imperial posts, presumably from

6254-409: The concentrations of greenhouse gases) may alter the climate, while climate change itself can change the atmospheric composition (for example by changing the rate at which weathering removes CO 2 ). Maureen Raymo , William Ruddiman and others propose that the Tibetan and Colorado Plateaus are immense CO 2 "scrubbers" with a capacity to remove enough CO 2 from the global atmosphere to be

6360-491: The continental ice sheets are the Greenland and Antarctic ice sheets and smaller glaciers such as on Baffin Island . The definition of the Quaternary as beginning 2.58 Ma is based on the formation of the Arctic ice cap . The Antarctic ice sheet began to form earlier, at about 34 Ma, in the mid- Cenozoic ( Eocene-Oligocene Boundary ). The term Late Cenozoic Ice Age is used to include this early phase. Ice ages can be further divided by location and time; for example,

6466-405: The continents and pack ice on the oceans would inhibit both silicate weathering and photosynthesis , which are the two major sinks for CO 2 at present." It has been suggested that the end of this ice age was responsible for the subsequent Ediacaran and Cambrian explosion , though this model is recent and controversial. The Andean-Saharan occurred from 460 to 420 million years ago, during

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6572-431: The continents are in positions which block or reduce the flow of warm water from the equator to the poles and thus allow ice sheets to form. The ice sheets increase Earth's reflectivity and thus reduce the absorption of solar radiation. With less radiation absorbed the atmosphere cools; the cooling allows the ice sheets to grow, which further increases reflectivity in a positive feedback loop. The ice age continues until

6678-437: The creation of the planned Magistrale for Europe . The AVV operates seven Regionalbahn lines from the main station to: Starting in 2008, the regional services are planned to be altered to S-Bahn frequencies and developed long term as integrated into the Augsburg S-Bahn. Until 2005 Augsburg was served by nearby Augsburg Airport (AGB). In that year all air passenger transport was relocated to Munich Airport . Since then,

6784-416: The current glaciation, more temperate and more severe periods have occurred. The colder periods are called glacial periods , the warmer periods interglacials , such as the Eemian Stage . There is evidence that similar glacial cycles occurred in previous glaciations, including the Andean-Saharan and the late Paleozoic ice house. The glacial cycles of the late Paleozoic ice house are likely responsible for

6890-406: The deaths of several hundred people. Following the war the three Kasernen changed hands confusingly between the American and Germans, finally ending up in US hands for the duration of the Cold War . They became the three main US barracks in Augsburg: Reese, Sheridan and FLAK. US Base FLAK had been an anti-aircraft barracks since 1936 and US Base Sheridan 'united' the former infantry barracks with

6996-617: The deposition of cyclothems . Glacials are characterized by cooler and drier climates over most of Earth and large land and sea ice masses extending outward from the poles. Mountain glaciers in otherwise unglaciated areas extend to lower elevations due to a lower snow line . Sea levels drop due to the removal of large volumes of water above sea level in the icecaps. There is evidence that ocean circulation patterns are disrupted by glaciations. The glacials and interglacials coincide with changes in orbital forcing of climate due to Milankovitch cycles , which are periodic changes in Earth's orbit and

7102-552: The early Proterozoic Eon. Several hundreds of kilometers of the Huronian Supergroup are exposed 10 to 100 kilometers (6 to 62 mi) north of the north shore of Lake Huron, extending from near Sault Ste. Marie to Sudbury, northeast of Lake Huron, with giant layers of now-lithified till beds, dropstones , varves , outwash , and scoured basement rocks. Correlative Huronian deposits have been found near Marquette, Michigan , and correlation has been made with Paleoproterozoic glacial deposits from Western Australia. The Huronian ice age

7208-433: The establishment and expansion of the Kaiserliche Reichspost in the late 15th and early 16th century. This postal system, which was the first modern postal service in the world, was created through negotiations and agreements between the Taxis family represented by Franz von Taxis  [ de ] and the early Habsburgs monarches, notably Maximilian I , his son Philip the Handsome and grandson Charles V. Even when

7314-405: The existence of glacial periods during the Valanginian , Hauterivian , and Aptian stages of the Early Cretaceous. Ice-rafted glacial dropstones indicate that in the Northern Hemisphere , ice sheets may have extended as far south as the Iberian Peninsula during the Hauterivian and Aptian. Although ice sheets largely disappeared from Earth for the rest of the period (potential reports from

7420-450: The following years, Esmark's ideas were discussed and taken over in parts by Swedish, Scottish and German scientists. At the University of Edinburgh Robert Jameson (1774–1854) seemed to be relatively open to Esmark's ideas, as reviewed by Norwegian professor of glaciology Bjørn G. Andersen (1992). Jameson's remarks about ancient glaciers in Scotland were most probably prompted by Esmark. In Germany, Albrecht Reinhard Bernhardi (1797–1849),

7526-454: The former Kaserne to German hands in 1998. Originally the Heeresverpflegungshauptamt Südbayern and an Officers' caisson existed on or near the location of Reese-Kaserne but was demolished by the occupying Americans. From 1266 until 1548, the terms Stadtpfleger (head of town council) and Mayor were used interchangeably, or occasionally, simultaneously. In 1548 the title was finally fixed to Stadtpfleger , who officiated for several years and

7632-417: The geographical distribution of fossils. During a glacial period, cold-adapted organisms spread into lower latitudes, and organisms that prefer warmer conditions become extinct or retreat into lower latitudes. This evidence is also difficult to interpret because it requires: Despite the difficulties, analysis of ice core and ocean sediment cores has provided a credible record of glacials and interglacials over

7738-434: The historical warm interglacial period that looks most like the current one and from this have predicted that the next glacial period would usually begin within 1,500 years. They go on to predict that emissions have been so high that it will not. The causes of ice ages are not fully understood for either the large-scale ice age periods or the smaller ebb and flow of glacial–interglacial periods within an ice age. The consensus

7844-521: The inhabitants of that valley attributed the dispersal of erratic boulders to the glaciers, saying that they had once extended much farther. Later similar explanations were reported from other regions of the Alps. In 1815 the carpenter and chamois hunter Jean-Pierre Perraudin (1767–1858) explained erratic boulders in the Val de Bagnes in the Swiss canton of Valais as being due to glaciers previously extending further. An unknown woodcutter from Meiringen in

7950-503: The last 1.5 million years were associated with northward shifts of melting Antarctic icebergs which changed ocean circulation patterns, leading to more CO 2 being pulled out of the atmosphere . The authors suggest that this process may be disrupted in the future as the Southern Ocean will become too warm for the icebergs to travel far enough to trigger these changes. Matthias Kuhle 's geological theory of Ice Age development

8056-554: The last glacial period the sea-level fluctuated 20–30 m as water was sequestered, primarily in the Northern Hemisphere ice sheets. When ice collected and the sea level dropped sufficiently, flow through the Bering Strait (the narrow strait between Siberia and Alaska is about 50 m deep today) was reduced, resulting in increased flow from the North Atlantic. This realigned the thermohaline circulation in

8162-512: The latest Quaternary Ice Age ). Outside these ages, Earth was previously thought to have been ice-free even in high latitudes; such periods are known as greenhouse periods . However, other studies dispute this, finding evidence of occasional glaciations at high latitudes even during apparent greenhouse periods. Rocks from the earliest well-established ice age, called the Huronian , have been dated to around 2.4 to 2.1 billion years ago during

8268-484: The most recent glacial periods, ice cores provide climate proxies , both from the ice itself and from atmospheric samples provided by included bubbles of air. Because water containing lighter isotopes has a lower heat of evaporation , its proportion decreases with warmer conditions. This allows a temperature record to be constructed. This evidence can be confounded, however, by other factors recorded by isotope ratios. The paleontological evidence consists of changes in

8374-526: The motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on Earth's surface, which affect wind and ocean currents ; variations in solar output ; the orbital dynamics of the Earth–Moon system; the impact of relatively large meteorites and volcanism including eruptions of supervolcanoes . Some of these factors influence each other. For example, changes in Earth's atmospheric composition (especially

8480-407: The names Riss (180,000–130,000 years bp ) and Würm (70,000–10,000 years bp) refer specifically to glaciation in the Alpine region . The maximum extent of the ice is not maintained for the full interval. The scouring action of each glaciation tends to remove most of the evidence of prior ice sheets almost completely, except in regions where the later sheet does not achieve full coverage. Within

8586-494: The north of the city. Augsburg has seven stations, the Central Station ( Hauptbahnhof ), Hochzoll , Oberhausen , Haunstetterstraße , Morellstraße , Messe and Inningen . The Central Station, built from 1843 to 1846, is Germany's oldest main station in a large city still providing services in the original building. It is currently being modernised and an underground tram station is built underneath it. Hauptbahnhof

8692-521: The past few million years. These also confirm the linkage between ice ages and continental crust phenomena such as glacial moraines, drumlins, and glacial erratics. Hence the continental crust phenomena are accepted as good evidence of earlier ice ages when they are found in layers created much earlier than the time range for which ice cores and ocean sediment cores are available. There have been at least five major ice ages in Earth's history (the Huronian , Cryogenian , Andean-Saharan , late Paleozoic , and

8798-401: The planet. Earth is currently in the ice age called Quaternary glaciation . Individual pulses of cold climate within an ice age are termed glacial periods ( glacials, glaciations, glacial stages, stadials, stades , or colloquially, ice ages ), and intermittent warm periods within an ice age are called interglacials or interstadials . In glaciology , the term ice age is defined by

8904-592: The presence of extensive ice sheets in the northern and southern hemispheres. By this definition, the current Holocene period is an interglacial period of an ice age. The accumulation of anthropogenic greenhouse gases is projected to delay the next glacial period. In 1742, Pierre Martel (1706–1767), an engineer and geographer living in Geneva , visited the valley of Chamonix in the Alps of Savoy . Two years later he published an account of his journey. He reported that

9010-567: The reduction in weathering causes an increase in the greenhouse effect . There are three main contributors from the layout of the continents that obstruct the movement of warm water to the poles: Since today's Earth has a continent over the South Pole and an almost land-locked ocean over the North Pole, geologists believe that Earth will continue to experience glacial periods in the geologically near future. Some scientists believe that

9116-923: The results were as follows: Augsburg is located in the Wahlkreis 253 Augsburg-Stadt constituency, which includes Königsbrunn and parts of the District of Augsburg ( Landkreis Augsburg ). Volker Ullrich of the CSU was directly elected to the Bundestag in the 18th German Bundestag . Indirectly elected to the Bundestag to adhere to the Landesliste were Ulrike Bahr for the SPD and Claudia Roth for Bündnis 90/Die Grünen . Augsburg has an oceanic climate ( Köppen climate classification : Cfb ) or, following

9222-469: The role of weathering). Greenhouse gas levels may also have been affected by other factors which have been proposed as causes of ice ages, such as the movement of continents and volcanism. The Snowball Earth hypothesis maintains that the severe freezing in the late Proterozoic was ended by an increase in CO 2 levels in the atmosphere, mainly from volcanoes, and some supporters of Snowball Earth argue that it

9328-500: The spread of ice sheets in the Northern Hemisphere began. Since then, the world has seen cycles of glaciation with ice sheets advancing and retreating on 40,000- and 100,000-year time scales called glacial periods , glacials or glacial advances, and interglacial periods, interglacials or glacial retreats. Earth is currently in an interglacial, and the last glacial period ended about 11,700 years ago. All that remains of

9434-482: The steep rim of the hills of Friedberg in the east and the high hills of the west. In the south extends the Lechfeld, an outwash plain of the post ice age between the rivers Lech and Wertach, where rare primeval landscapes were preserved. The Augsburg city forest and the Lech valley heaths today rank among the most species-rich middle European habitats. Augsburg borders the nature park Augsburg Western Woods ,

9540-557: The summer of 1835 he made some excursions to the Bavarian Alps. Schimper came to the conclusion that ice must have been the means of transport for the boulders in the alpine upland. In the winter of 1835–36 he held some lectures in Munich. Schimper then assumed that there must have been global times of obliteration ("Verödungszeiten") with a cold climate and frozen water. Schimper spent the summer months of 1836 at Devens, near Bex, in

9646-481: The temperatures over land by increased albedo as noted above. Furthermore, under this hypothesis the lack of oceanic pack ice allows increased exchange of waters between the Arctic and the North Atlantic Oceans, warming the Arctic and cooling the North Atlantic. (Current projected consequences of global warming include a brief ice-free Arctic Ocean period by 2050 .) Additional fresh water flowing into

9752-547: The tilt of Earth's rotational axis. Earth has been in an interglacial period known as the Holocene for around 11,700 years, and an article in Nature in 2004 argues that it might be most analogous to a previous interglacial that lasted 28,000 years. Predicted changes in orbital forcing suggest that the next glacial period would begin at least 50,000 years from now. Moreover, anthropogenic forcing from increased greenhouse gases

9858-514: The world to generate electricity from water and they are still in use today. On 6 July 2019 the Water Management System of Augsburg was designated as a UNESCO World Heritage Site . Augsburg has a population of about 300,000. It is the third largest city in Bavaria and the largest city in the Swabia region. In the 16th century, Augsburg was one of the largest cities in Holy Roman Empire , with

9964-534: Was a cause of the presence of erratic boulders in the Scandinavian and Baltic regions. In 1795, the Scottish philosopher and gentleman naturalist, James Hutton (1726–1797), explained erratic boulders in the Alps by the action of glaciers. Two decades later, in 1818, the Swedish botanist Göran Wahlenberg (1780–1851) published his theory of a glaciation of the Scandinavian peninsula. He regarded glaciation as

10070-589: Was an independent entity, and had authority over its tax policies. Augsburg's wealth attracted artists seeking patrons . The city rapidly became a creative centre for sculptors and musicians . Augsburg became the base of the Holbein family, starting with Hans Holbein the Elder . The composer Leopold Mozart was born and educated in Augsburg. Rococo became so prevalent that it became known as "Augsburg style" throughout Germany. Augsburg benefitted majorly from

10176-545: Was annexed to the Kingdom of Bavaria . In 1817, the city became an administrative capital of the Oberdonaukreis , then administrative capital in 1837 for the district Swabia and Neuburg . During the end of the 19th century, Augsburg's textile industry again rose to prominence followed by the machine manufacturing industry. Augsburg was historically a militarily important city due to its strategic location. During

10282-625: Was caused by the elimination of atmospheric methane , a greenhouse gas , during the Great Oxygenation Event . The next well-documented ice age, and probably the most severe of the last billion years, occurred from 720 to 630 million years ago (the Cryogenian period) and may have produced a Snowball Earth in which glacial ice sheets reached the equator, possibly being ended by the accumulation of greenhouse gases such as CO 2 produced by volcanoes. "The presence of ice on

10388-429: Was caused in the first place by a reduction in atmospheric CO 2 . The hypothesis also warns of future Snowball Earths. In 2009, further evidence was provided that changes in solar insolation provide the initial trigger for Earth to warm after an Ice Age, with secondary factors like increases in greenhouse gases accounting for the magnitude of the change. The geological record appears to show that ice ages start when

10494-558: Was composed of parts of the Wehrmacht Infanterie Division 27. The Infanterie Regiment 40 remained in Augsburg until the end of the war, finally surrendering to the United States on 28 April 1945 when the U.S. Army occupied the city. The city and its Messerschmitt works were bombed on three occasions during the war. Collateral damage included the destruction of just under 25% of all homes in the city and

10600-455: Was difficult to date exactly; early theories assumed that the glacials were short compared to the long interglacials. The advent of sediment and ice cores revealed the true situation: glacials are long, interglacials short. It took some time for the current theory to be worked out. The chemical evidence mainly consists of variations in the ratios of isotopes in fossils present in sediments and sedimentary rocks and ocean sediment cores. For

10706-519: Was founded in 15 BC on the orders of Emperor Augustus . Emperor Augustus conducted extensive military campaigns and established administrative settlements. The Roman colony that became Augsburg was known as Augusta Vindelicorum , meaning "the Augustan city of the Vindelici ". The settlement was established at the convergence of the Alpine rivers Lech and Wertach . In 120 AD Augsburg became

10812-407: Was one of the first European towns to separate drinking water from water used for industry, effectively preventing water-borne diseases. The pumps and waterwheels also generated power for fountains and food processing, such as a 17th-century butcher's hall that still stands today. In the 19th and 20th centuries hydroelectic power plants were also installed. These power plants were some of the first in

10918-526: Was suggested by the existence of an ice sheet covering the Tibetan Plateau during the Ice Ages ( Last Glacial Maximum ?). According to Kuhle, the plate-tectonic uplift of Tibet past the snow-line has led to a surface of c. 2,400,000 square kilometres (930,000 sq mi) changing from bare land to ice with a 70% greater albedo . The reflection of energy into space resulted in a global cooling, triggering

11024-668: Was the largest German manufacturer of engines for U-boats in World War II and became the target of the Augsburg Raid. When the Avro Lancaster bomber was new in service, the RAF sent 12 at low level to bomb the factory in daylight, on 17 April 1942. The bombers were intercepted en route and only five returned, all damaged. The factory was damaged but production continued; the factory was repeatedly bombed later. A subcamp of

11130-496: Was then awarded the title for life (though no longer governing), thus resulting confusingly, in records of two or more simultaneous Stadtpfleger . After the transfer to Bavaria in 1806, Augsburg was ruled by a Magistrate with two mayors, supported by an additional council of "Community Commissioners": the Gemeindebevollmächtige . As of 1907, the Mayor was entitled Oberbürgermeister , as Augsburg had reached

11236-719: Was to meet the Duke of Hamilton in an attempt to mediate the end of the European front of World War II and join sides for the upcoming Russian Campaign. The Reichswehr Infanterie Regiment 19 was stationed in Augsburg and became the base unit for the Wehrmacht Infanterie Regiment 40, a subsection of the Wehrmacht Infanterie Division 27 (which later became the Wehrmacht Panzerdivision 17). Elements of Wehrmacht II Battalion of Gebirgs-Jäger-Regiment 99 (especially Wehrmacht Panzerjäger Kompanie 14)

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