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81-515: The Gardens had its origin in the 17th century, when the marriage of Leopold's great-grandfather Prince John George II of Anhalt-Dessau to the Dutch princess Henriette Catharina, daughter of Prince Frederick Henry of Orange ( Dutch : Oranje ), in 1659 brought a team of engineers and architects from the Low Countries under the supervision of architect Cornelis Ryckwaert to lay out the town,

162-664: A Generalfeldmarschall in 1670. After France invaded Frederick William's Duchy of Cleves , John George negotiated a treaty in Vienna in June 1672 between Leopold I, Holy Roman Emperor , and Frederick William, by which each pledged to provide 12,000 troops to uphold the borders of the Peace of Westphalia in the face of French aggression. John George was chosen to lead the largely unsuccessful campaign, which led Georg von Derfflinger to temporarily resign in protest. While campaigning against

243-453: A brick inner building nearly five stories high and cover it with local boulders. At the top, a hollow cone was made and contained a high chamber, complete with three fireplaces and a roof that contained an "artificial crater" that could be filled with water. He then constructed a lake around the volcano and invited his friends to watch an eruption. Only contemporary accounts detail what the 18th-century artificial eruption would have been like, but

324-494: A detailed description of the AD 79 eruption, including his uncle's death. On occasion, eruptions from Vesuvius have been so large that the whole of southern Europe has been blanketed by ash; in 472 and 1631, Vesuvian ash fell on Constantinople ( Istanbul ), over 1,200 kilometres (750 mi) away. A few times since 1944, landslides in the crater have raised clouds of ash dust, raising false alarms of an eruption. Since 1750, seven of

405-533: A high-altitude column from which ash and pumice began to fall, blanketing the area. Rescues and escapes occurred during this time. At some time in the night or early the next day, pyroclastic surges in the close vicinity of the volcano began. Lights were seen on the peak, interpreted as fires. People as far away as Misenum fled for their lives. The flows were rapid-moving, dense and very hot, knocking down, wholly or partly, all structures in their path, incinerating or suffocating all population remaining there and altering

486-567: A phonolitic tephrite ). According to the Smithsonian Institution 's Global Volcanism Program , Vesuvius has had 54 confirmed eruptions during the Holocene Epoch (the last 11,700 years). A volcanic explosivity index (VEI) has been assigned to all but one of these eruptions. Scientific knowledge of the geologic history of Vesuvius comes from core samples taken from a 2,000 m (6,600 ft) plus borehole on

567-543: A plain Neoclassical style as a country home according to plans by Erdmannsdorff with adjacent gardens, pastures and a stud farm . The rooms on the ground floor and first story are decorated with ornate stucco decorations and wall paintings. Nearby is the neogothic Snake House, which was used as a holiday home and tea-house. The orangery at the Snake House draws its design from London's Kew Gardens . Leopold died at

648-471: A rotunda modeled after the ancient " Temple of Vesta in Tivoli, Italy . The building expressing Leopold's religious tolerance was saved from demolition in the 1938 " Kristallnacht " pogrom by the custodian of the park, who thereupon lost his employment. The Neo-Gothic St Peter's Church in the west with its 66 m (217 ft) tall steeple was finished in 1809. The philosophy of Jean-Jacques Rousseau and

729-616: Is a somma – stratovolcano located on the Gulf of Naples in Campania , Italy , about 9 km (5.6 mi) east of Naples and a short distance from the shore. It is one of several volcanoes forming the Campanian volcanic arc . Vesuvius consists of a large cone partially encircled by the steep rim of a summit caldera , resulting from the collapse of an earlier, much higher structure. The eruption of Mount Vesuvius in 79 AD destroyed

810-447: Is a "humpbacked" peak, consisting of a large cone ( Gran Cono ) partially encircled by the steep rim of a summit caldera caused by the collapse of an earlier (and originally much higher) structure called Mount Somma . The Gran Cono was produced during the A.D. 79 eruption. For this reason, the volcano is also called Somma-Vesuvius or Somma-Vesuvio . The caldera started forming during an eruption around 17,000–18,000 years ago and

891-403: Is assumed that tephra accumulation exceeding 100 kilograms per square metre (20 lb/sq ft)—at which point people are at risk from collapsing roofs—may extend out as far as Avellino to the east or Salerno to the south-east. Near Naples, this tephra fall hazard is assumed to extend barely past the volcano's slopes to the northwest. The specific areas affected by the ash cloud depend upon

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972-761: Is the second largest within the Garden Kingdom aside from the Wörlitz gardens. Today the Georgium hosts the Anhalt collection of art, including works by Albrecht Dürer - especially an old master print of his Melencolia I - and Lucas Cranach the Elder . Luisium Castle is located in the Waldersee district of Dessau , and was a gift from Duke Leopold III to his wife Louise. It was built between 1774 and 1778 in

1053-409: Is to increase the concentration of dissolved gases (mostly sulfur dioxide and carbon dioxide ) in the remaining liquid magma, making the subsequent eruption more violent. As gas-rich magma approaches the surface during an eruption , the huge drop in internal pressure caused by the reduction in weight of the overlying rock (which drops to zero at the surface) causes the gases to come out of solution,

1134-699: The Battle of Fehrbellin . In 1683 John George travelled to Passau , ostensibly to discuss Brandenburg's involvement in the Ottoman wars with the emperor Leopold, although his main aim was to advise against another French war. The prince reaffirmed Brandenburg's alliance with Austria . Prince John George died in Berlin on 7 August 1693. He was succeeded as prince of Anhalt-Dessau by his eldest surviving son, Leopold . Mount Vesuvius Mount Vesuvius ( / v ɪ ˈ s uː v i ə s / viss- OO -vee-əs )

1215-481: The Bay of Naples . A massive black cloud glistering with lightning obscured the early-morning light, a scene Pliny describes as sheet lightning . The cloud obscured Point Misenum near at hand and the island of Capraia ( Capri ) across the bay. Fearing for their lives, the population began to flee the shore along the road. An ash rain fell, causing Pliny to shake it off periodically to avoid being buried. Later that same day,

1296-603: The Fruitbearing Society , he also served as a field marshal of Brandenburg-Prussia . John George was born on 17 November 1627 at Dessau , the second (but eldest and only surviving) son of John Casimir, Prince of Anhalt-Dessau , by his first wife Agnes , daughter of Maurice, Landgrave of Hesse-Kassel . In Groningen on 9 September 1659 John George married Henriette Katharina (b. The Hague , 10 February 1637 – d. Schloss Oranienbaum, 3 November 1708), daughter of Frederick Henry, Prince of Orange . The marriage

1377-610: The House of Orange-Nassau , that features works by Peter Paul Rubens and Anthony van Dyck . Großkühnau Castle marks the western end of the Garden Realm. It was built in 1780 for Albert of Anhalt-Dessau, a younger brother of Duke Leopold III, at Kühnau Lake. The park includes several artificial islands, fruit tree orchards and a vineyard. Today the castle is the seat of the Kulturstiftung Dessau-Wörlitz ,

1458-450: The Roman cities of Pompeii , Herculaneum , Oplontis , Stabiae and other settlements. The eruption ejected a cloud of stones , ash and volcanic gases to a height of 33 km (21 mi), erupting molten rock and pulverized pumice at the rate of 6 × 10 cubic metres (7.8 × 10  cu yd) per second. More than 1,000 people are thought to have died in the eruption, though

1539-591: The Roman Iron Age , the etymology depends to a large degree on the presumption of what language was spoken there at the time. Naples was settled by Greeks, as the name Nea-polis , "New City", testifies. The Oscans , an Italic people, lived in the countryside. The Latins also competed for the occupation of Campania. Etruscan settlements were in the vicinity. Other peoples of unknown provenance are said to have been there at some time by various ancient authors. Some theories about its origin are: Vesuvius

1620-484: The subduction process described above, which extends northwest along the length of Italy as far as Monte Amiata in Southern Tuscany . Vesuvius is the only one to have erupted in recent history, although some of the others have erupted within the last few hundred years. Many are either extinct or have not erupted for tens of thousands of years. Mount Vesuvius has erupted many times. Numerous others preceded

1701-535: The thermal energy released by the Hiroshima-Nagasaki bombings . The cities of Pompeii and Herculaneum were destroyed by pyroclastic surges and the ruins buried under tens of metres of tephra . The AD 79 eruption was preceded by a powerful earthquake in 62 , which caused widespread destruction around the Bay of Naples, and particularly to Pompeii. Some of the damage had still not been repaired when

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1782-533: The 18th century (including 1779 and 1794), eight times in the 19th century (notably in 1872), and in 1906, 1929 and 1944. There have been no eruptions since 1944, and none of the eruptions after AD 79 were as large or destructive as the Pompeian one. The eruptions vary greatly in severity but are characterized by explosive outbursts of the kind dubbed Plinian after Pliny the Younger , a Roman writer who published

1863-478: The 1930s, were designated a World Heritage Site by UNESCO in 2000. ICOMOS , however, noted that "the overall structure of the landscape has undergone a good deal of deterioration". The original Oranienbaum Palace was finished in 1683 as the summer residence of Henriette Catharina, where she retired after the death of her husband in 1693. The rich furnishing includes leather wallpapers and a dining room equipped with Delft tiles . However, in 1780 Duke Leopold III had

1944-439: The 200 years preceding the AD 79 eruption describe the mountain as having had a volcanic nature, although Pliny the Elder did not depict the mountain in this way in his Natural History : In AD 79, Vesuvius erupted in one of the most catastrophic eruptions of all time. Historians have learned about the eruption from the eyewitness account of Pliny the Younger , a Roman administrator and poet. Several dates are given in

2025-519: The 5 km (3.1 mi) long valley of Atrio di Cavallo (the northern floor of Monte Somma's caldera). The volcano's slopes are scarred by lava flows, while the rest are heavily vegetated, with scrub and forests at higher altitudes and vineyards lower down. Vesuvius is a stratovolcano and was formed as a result of the collision of two tectonic plates , the African and the Eurasian . The former

2106-486: The Bay of Naples from the volcano, approximately 35 kilometres (22 mi), the elder Pliny launched a rescue fleet and went himself to the rescue of a personal friend. His nephew declined to join the party. One of the nephew's letters relates what he could discover from witnesses of his uncle's experiences. In a second letter, the younger Pliny details his own observations after the departure of his uncle. The two men saw an extraordinarily dense cloud rising rapidly above

2187-460: The Earth's surface, it broke through, thus forming the volcano. The volcano is one of several forming the Campanian volcanic arc . Others include Campi Flegrei , a large caldera a few kilometers to the north-west, Ischia , a volcanic island 20 kilometres (12 mi) to the west, and several undersea volcanoes to the south. The arc forms the southern end of a larger chain of volcanoes produced by

2268-821: The French for control of Alsace in 1674, most of Frederick William's army went into winter quarters in Franconian Schweinfurt . As viceroy ( Statthalter ), John George commanded the troops remaining in Brandenburg. King Louis XIV of France convinced King Charles XI of Sweden to invade Brandenburg; after dispersing John George's small force, the Swedish troops went into winter quarters as well. The Prince of Dessau took part in Frederick William's retaliatory campaign in 1675, which resulted in

2349-465: The aesthetic of Johann Joachim Winckelmann underlie the design of the park and will lead to the creation of follies . Rousseau saw agriculture as the basis of everyday life and pointed out to educational functions of the natural landscape. Unsurprisingly, the most elegant landscape in the area is Rousseau Island in Neumark's Garden, scored to imitate the island at Ermenonville Park where the philosopher

2430-493: The amount of magma expelled in an eruption increases roughly linearly with the interval since the previous one, and at a rate of around 0.001 cubic kilometres (0.00024 cu mi) for each year. This gives an approximate figure of 0.08 cubic kilometres (0.019 cu mi) for an eruption after 80 years of inactivity. Magma sitting in an underground chamber for many years will start to see higher melting point constituents such as olivine crystallizing out. The effect

2511-546: The ancient architecture of Italy and the English landscape gardens), and the ideals of The Enlightenment they encountered abroad heavily influenced their artistic tendencies. The two men aimed to move from the formal garden concept of the Baroque era to a more naturalistic landscape, as they had seen at Stourhead Gardens and Ermenonville . As early as 1765, Leopold III began to make architectural and landscape changes to

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2592-580: The castle on 9 August 1817 from the consequences of a riding accident. Mosigkau Palace in the west of Dessau is one of the few Rococo palaces in Central Germany , resembling Sanssouci at Potsdam , which had been designed by Georg Wenzeslaus von Knobelsdorff . It was built between 1752 and 1757 for Anna Wilhelmine of Anhalt-Dessau , the daughter of Prince Leopold I . The ensemble includes an orangery and an art collection of Flemish Baroque painting , stemming from Duke John George's II union with

2673-446: The circumstances surrounding the eruption. The plan assumes between two weeks and 20 days notice of an eruption and foresees the emergency evacuation of 600,000 people, almost entirely comprising all those living in the zona rossa ("red zone"), i.e. at greatest risk from pyroclastic flows. The evacuation, by train, ferry, car, and bus, is planned to take about seven days, and the evacuees would mostly be sent to other parts of

2754-412: The city. The lowest temperatures were in rooms under collapsed roofs, at approximately 100 °C (212 °F). The only surviving eyewitness account of the event consists of two letters by Pliny the Younger to the historian Tacitus . Pliny the Younger describes, amongst other things, the last days in the life of his uncle, Pliny the Elder . Observing the first volcanic activity from Misenum across

2835-428: The coast near the foot of the volcano, explaining that her party could only get away by sea and asking for rescue. Pliny ordered the immediate launching of the fleet galleys to the evacuation of the coast. He continued in his light ship to the rescue of Rectina's party. He set off across the bay but, in the shallows on the other side, encountered thick showers of hot cinders, lumps of pumice and pieces of rock. Advised by

2916-425: The column. The eruption alternated between Plinian and Peléan six times. Surges 3 and 4 are believed by the authors to have buried Pompeii. Surges are identified in the deposits by dune and cross-bedding formations, which are not produced by fallout. Another study used the magnetic characteristics of over 200 samples of roof-tile and plaster fragments collected around Pompeii to estimate the equilibrium temperature of

2997-582: The continent. The park also features replicas of Roman temples , including the Pantheon built in 1795. In the early years of the following century, the landscape was enriched with the Neo-Gothic churches in the neighbouring villages of Riesigk (1800) and Vockerode (1811). The grounds, which had been divided into four parts since the construction of a railway line and the Bundesautobahn 9 in

3078-423: The country, rather than to safe areas in the local Campania region, and may have to stay away for several months. However, the dilemma that would face those implementing the plan is when to start this massive evacuation: If it starts too late, thousands could be killed, whereas if it is started too early, the indicators of an eruption may turn out to be a false alarm . In 1984, 40,000 people were evacuated from

3159-567: The countryside in order to realize these ideals. The Wörlitz gardens served as the starting point of the programme, becoming the first landscape garden in continental Europe. Over the next 40 years, Leopold adapted or developed several other parks and palaces to fit the Enlightenment aesthetic, including the Oranienbaum Palace, Georgium Castle, Mosigkau Castle, and Großkühnau Castle. The central Wörlitzer Park lies adjacent to

3240-411: The crater. Layers of lava , ash , scoria and pumice make up the volcanic peak. Their mineralogy is variable, but generally silica -undersaturated and rich in potassium , with phonolite produced in the more explosive eruptions (e.g. the eruption in 1631 displaying a complete stratigraphic and petrographic description: phonolite was firstly erupted, followed by a tephritic phonolite and finally

3321-587: The danger zone. This is the most densely populated volcanic region in the world. Eruptions tend to be violent and explosive; these are known as Plinian eruptions. Vesuvius has a long historic and literary tradition. It was considered a divinity of the Genius type at the time of the eruption of AD 79: it appears under the inscribed name Vesuvius as a serpent in the decorative frescos of many lararia , or household shrines, surviving from Pompeii . An inscription from Capua to IOVI VESVVIO indicates that he

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3402-423: The eruption becoming more frequent over the next four days, but the warnings were not recognized. Reconstructions of the eruption and its effects vary considerably in the details but have the same overall features. The eruption lasted two days. The morning of the first day was perceived as normal by the only eyewitness to leave a surviving document, Pliny the Younger. In the middle of the day, an explosion threw up

3483-548: The eruption in AD 79 in prehistory, including at least three significantly larger; an example is the Avellino eruption around 1800 BC, which engulfed several Bronze Age settlements. Since AD 79, the volcano has also erupted repeatedly, in 172, 203, 222, possibly in 303, 379, 472, 512, 536, 685, 787, around 860, around 900, 968, 991, 999, 1006, 1037, 1049, around 1073, 1139, 1150, and there may have been eruptions in 1270, 1347, and 1500. The volcano erupted again in 1631, six times in

3564-415: The eruptions of Vesuvius have had durations of more than five years; only Mount Etna has had as many long-duration eruptions in the last 270 years. The two most recent eruptions of Vesuvius (1875–1906 and 1913–1944) each lasted more than 30 years. Vesuvius is still regarded as an active volcano, although its current activity produces little more than sulfur-rich steam from vents at the bottom and walls of

3645-430: The exact toll is unknown. The only surviving witness account consists of two letters by Pliny the Younger to the historian Tacitus . Vesuvius has erupted many times since. It is the only volcano on Europe's mainland to have erupted in the last hundred years. It is regarded as one of the most dangerous volcanoes in the world because 3,000,000 people live near enough to be affected by an eruption, with at least 600,000 in

3726-561: The fabric control surfaces, the engines, the Plexiglas windscreens and the gun turrets of the 340th's B-25 Mitchell medium bombers. Estimates ranged from 78 to 88 aircraft destroyed. The eruption could be seen from Naples. Different perspectives and the damage caused to the local villages were recorded by USAAF photographers and other personnel based nearer to the volcano. Large Vesuvian eruptions which emit volcanic material in quantities of about 1 cubic kilometre (0.24 cu mi),

3807-589: The few original Dutch Baroque town layouts in Germany. Queen Beatrix of the Netherlands , Princess of Orange-Nassau , inspected the restoration works on 3 March 2004. In 1780, John George (1748-1811), a younger brother of Duke Leopold III, had the Georgium Castle by Erdmannsdorff. Located in a riparian woodland north of Dessau, the palace features an English garden with several monuments. The garden

3888-440: The fields with pillows tied to their heads to protect them from the raining debris. They approached the beach again, but the wind prevented the ships from leaving. Pliny sat down on a sail that had been spread for him and could not rise even with assistance when his friends departed. Though Pliny the Elder died, his friends ultimately escaped by land. In the first letter to Tacitus, Pliny the Younger suggested that his uncle's death

3969-571: The flanks of the volcano, extending into Mesozoic rock. Cores were dated by potassium–argon and argon–argon dating . The area has been subject to volcanic activity for at least 400,000 years; the lowest layer of eruption material from the Somma caldera lies on top of the 40,000-year‑old Campanian ignimbrite produced by the Campi Flegrei complex. The volcanic complex stands on a large, sedimentary plain. Several surviving works written over

4050-499: The following years, it again became covered with gardens and vineyards as old. Even the inside of the crater was moderately filled with shrubbery. In March 1944, the United States Army Air Forces (USAAF) 340th Bombardment Group was based at Pompeii Airfield near Terzigno , Italy, just a few kilometres from the eastern base of the volcano. The tephra and hot ash from multiple days of the eruption damaged

4131-418: The former seashore by the first surge died of thermal shock. The rest were concentrated in arched chambers at a density of as high as three persons per square metre. As only 85 metres (279 ft) of the coast have been excavated, further casualties may be discovered. Since the eruption of AD 79, Vesuvius has erupted around three dozen times. The volcano became quiescent at the end of the 13th century, and in

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4212-510: The gardens were laid out by Johann Friedrich Eyserbeck (1734-1818), a garden architect who was indebted to such English antecedents as Claremont , Stourhead and Stowe Landscape Garden . The gardens are protected from floods of the Elbe river in the north by a dam which is also a belt-walk offering numerous views along the park's sight lines. Wörlitz Palace finished in 1773, the residence of Duke Leopold and his wife Louise of Brandenburg-Schwedt ,

4293-490: The helmsman to turn back, he stated, "Fortune favors the brave" and ordered him to continue to Stabiae (about 4.5 km from Pompeii). Pliny the Elder and his party saw what they believed to be flames coming from several parts of the crater. After staying overnight, the party was driven from the building by an accumulation of material, presumably tephra, which threatened to block all egress. They woke Pliny, who had been napping and emitting loud snoring. They elected to take to

4374-515: The landscape, including the coastline. Additional light tremors accompanied these and a mild tsunami in the Bay of Naples. By late afternoon of the second day, the eruption was over, leaving only haze in the atmosphere through which the sun shone weakly. The latest scientific studies of the ash produced by Vesuvius reveal a multi-phase eruption. The initial major explosion produced a column of ash and pumice ranging between 15 and 30 kilometres (49,000 and 98,000 ft) high, which rained on Pompeii to

4455-452: The most recent of which overwhelmed Pompeii and Herculaneum, have happened after periods of inactivity of a few thousand years. Sub-Plinian eruptions producing about 0.1 cubic kilometres (0.024 cu mi), such as those of 472 and 1631, have been more frequent with a few hundred years between them. From the 1631 eruption until 1944, there was a comparatively small eruption every few years, emitting 0.001–0.01 km of magma. For Vesuvius,

4536-453: The mountain which of old spouted forth a huge fire [...] the mountain is called Vesuvius." It was inhabited by giant bandits, "the sons of the Earth. With the gods' assistance, he pacified the region and continued. The facts behind the tradition, if any, remain unknown, as does whether Herculaneum was named after it. An epigram by the poet Martial in 88 AD suggests that both Venus , patroness of Pompeii, and Hercules were worshipped in

4617-545: The palace and a Baroque garden in the former settlement of Nischwitz , which was renamed Oranienbaum in 1673. The Dutch influence remained prevalent in the Principality of Anhalt-Dessau for many decades. In 1758, Prince Leopold III became the Duke of Anhalt-Dessau, and five years later he and his friend, the architect Friedrich Wilhelm von Erdmannsdorff , embarked on a Grand Tour across Europe. The tour (in particular

4698-488: The palace and the park rebuilt in a Chinese style , according to the theories of Sir William Chambers , with several arch bridges , a tea house and a pagoda . In 1811, the orangery was built, with 175 m (574 ft) in length one of the largest in Europe, which still serves to protect a wide collection of citrus plants. Oranienbaum Palace together with the park and the geometrical settlement conception forms one of

4779-427: The peak. This cloud and a request by a messenger for an evacuation by sea prompted the elder Pliny to order rescue operations in which he sailed away to participate. His nephew attempted to resume a normal life, but that night a tremor awoke him and his mother, prompting them to abandon the house for the courtyard. Further tremors near dawn caused the population to abandon the village and caused disastrous wave action in

4860-417: The practice still takes place today, complete with modern effects, after the island was restored to its past glory. Minor structures of the Garden Realm, stretching for some 25 km, had far-reaching ramifications in architecture of Central Europe. The "Gothic House", started by Erdmannsdorff in 1774, modeled on the villa of Horace Walpole at Strawberry Hill , was one of the first Neo Gothic structures on

4941-459: The pumice and ash stopped falling, and the sun shone weakly through the cloud, encouraging Pliny and his mother to return to their home and wait for news of Pliny the Elder. Pliny's uncle, Pliny the Elder, was in command of the Roman fleet at Misenum and had meanwhile decided to investigate the phenomenon at close hand in a light vessel. As the ship was preparing to leave the area, a messenger came from his friend Rectina (wife of Tascius ) living on

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5022-735: The pyroclastic flow. The magnetic study revealed that on the first day of the eruption a fall of white pumice containing clastic fragments of up to 3 centimetres (1.2 in) fell for several hours. It heated the roof tiles up to 140 °C (284 °F). This period would have been the last opportunity to escape. The collapse of the Plinian columns on the second day caused pyroclastic density currents (PDCs) that devastated Herculaneum and Pompeii. The depositional temperature of these pyroclastic surges reached up to 300 °C (572 °F). Any population remaining in structural refuges could not have escaped, as gases of incinerating temperatures surrounded

5103-470: The region devastated by the eruption of 79. Vesuvius was a name of the volcano in frequent use by the authors of the late Roman Republic and the early Roman Empire . Its collateral forms were Vesaevus , Vesevus , Vesbius and Vesvius . Writers in ancient Greek used Οὐεσούιον or Οὐεσούιος . Many scholars since then have offered an etymology . Given that peoples of varying ethnicity and language occupied Campania during

5184-442: The scattered bones of another 100. The remains of about 332 bodies have been found at Herculaneum (300 in arched vaults discovered in 1980). What percentage these numbers are of the total dead or the percentage of the dead to the total number at risk remain unknown. Thirty-eight percent of the 1,044 were found in the ash fall deposits, the majority inside buildings. These are thought to have been killed mainly by roof collapses, with

5265-512: The small town of Wörlitz at an anabranch of the Elbe river, making it rich in water and diversity. It was laid out between 1769 and 1773 as one of the first English gardens on the continent. According to the ideals of Duke Leopold III the park would also serve as an educational institution in architecture, gardening and agriculture, therefore large parts were open to the public from the beginning. Most buildings were designed by Erdmannsdorff, while

5346-445: The smaller number of victims found outside of buildings probably being killed by falling roof slates or by larger rocks thrown out by the volcano. The remaining 62% of remains found at Pompeii were in the pyroclastic surge deposits, and thus were probably killed by them – probably from a combination of suffocation from inhaling ashes and blast and debris thrown around. Examination of cloth, frescoes and skeletons shows that, in contrast to

5427-478: The southeast but not on Herculaneum upwind. The chief energy supporting the column came from the escape of steam superheated by the magma, created from seawater seeping over time into the deep faults of the region, which interacted with magma. Subsequently, the cloud collapsed as the gases expanded and lost their capability to support their solid contents, releasing it as a pyroclastic surge, which first reached Herculaneum but not Pompeii. Additional blasts reinstituted

5508-414: The surviving copies of the letters. The latest evidence supports earlier findings and indicates that the eruption occurred after 17 October. The volcano ejected a cloud of stones , ashes and volcanic gases to a height of 33 km (21 mi), spewing molten rock and pulverized pumice at the rate of 6 × 10 cubic metres (7.8 × 10  cu yd) per second, ultimately releasing 100,000 times

5589-641: The trust running the park. Furthermore, the Garden Realm encompasses the Leiner Berg forester's lodge, built in 1830, now a restaurant near the Elbe Cycle Route , and the Sieglitzer Berg forest park laid out in 1777. John George II, Prince of Anhalt-Dessau John George II (17 November 1627 – 7 August 1693) was a German prince of the House of Ascania and ruler of the principality of Anhalt-Dessau from 1660 to 1693. A member of

5670-399: The victims found at Herculaneum, it is unlikely that high temperatures were a significant cause of the destruction at Pompeii. Herculaneum, much closer to the crater, was saved from tephra falls by the wind direction but was buried under 23 metres (75 ft) of material deposited by pyroclastic surges. Likely, most of the known victims in this town were killed by the surges. People caught on

5751-485: The volcano erupted. The deaths of 600 sheep from "tainted air" in the vicinity of Pompeii indicates that the earthquake of AD 62 may have been related to new activity by Vesuvius. The Romans grew accustomed to minor earth tremors in the region; the writer Pliny the Younger even wrote that they "were not particularly alarming because they are frequent in Campania". Small earthquakes started taking place four days before

5832-407: The volume of gas increasing explosively from nothing to perhaps many times that of the accompanying magma. Additionally, the removal of the higher melting point material will raise the concentration of felsic components such as silicates , potentially making the magma more viscous , adding to the explosive nature of the eruption. The government emergency plan for an eruption therefore assumes that

5913-429: The worst case will be an eruption of similar size and type to the 1631 VEI 4 eruption. In this scenario, the volcano's slopes, extending out to about 7 kilometres (4.3 mi) from the vent, may be exposed to pyroclastic surges sweeping down them, whilst much of the surrounding area could suffer from tephra falls. Because of prevailing winds , towns and cities south and east of the volcano are most at risk from this. It

5994-463: Was subducted at a convergent boundary beneath the latter, deeper into the earth. As the water-saturated sediments of the African oceanic plate were pushed to hotter depths inside the planet, the water boiled off and lowered the melting point of the upper mantle enough to partially melt the rocks. Because magma is less dense than the solid rock around it, it was pushed upward. Finding a weak spot at

6075-481: Was buried. An island on the artificial Wörlitz Lake features Europe's only artificial volcano. When Leopold III went on a grand tour of Europe in the 1760s, he was captivated by a trip to Naples in which he saw a smouldering Mount Vesuvius and would have heard about the newly-discovered town of Pompeii . Twenty-two years later, the German royal set about bringing a piece of Naples to Germany; he had his architect build

6156-399: Was due to the reaction of his weak lungs to a cloud of poisonous, sulphurous gas that wafted over the group. However, Stabiae was 16 km from the vent (roughly where the modern town of Castellammare di Stabia is situated), and his companions were unaffected by the volcanic gases. It is more likely that the corpulent Pliny died from another cause, such as a stroke or heart attack. His body

6237-492: Was enlarged by later paroxysmal eruptions, ending in the one of AD 79. This structure has given its name to the term " somma volcano ", which describes any volcano with a summit caldera surrounding a newer cone. The cliffs forming the northern ridge of Monte Somma's caldera rim reach a maximum height of 1,132 m (3,714 ft) at Punta Nasone. The summit of the main cone of Vesuvius is 1,281 m (4,203 ft) above sea level and more than 400 m (1,300 ft) above

6318-491: Was found with no apparent injuries the next day, after dispersal of the plume. Along with Pliny the Elder, the only other noble casualties of the eruption to be known by name were Agrippa (a son of the Herodian Jewish princess Drusilla and the procurator Antonius Felix ) and his wife. By 2003, around 1,044 casts made from impressions of bodies in the ash deposits had been recovered in and around Pompeii, with

6399-553: Was happy and was even said by some to be a love match. They had ten children. After the death of his father on 15 July 1660, John George took over the government of Anhalt-Dessau. He also inherited his family's claim on Aschersleben , which had been controlled by Brandenburg-Prussia since 1648. John George made his military career in the service of the Prussian army ; the Elector Frederick William named him

6480-471: Was the first Neoclassical building in present-day Germany. The palace and its interior with valuable cabinets from the studio of Abraham and David Roentgen as well as a large collection of Wedgwood porcelain were publicly accessible. Louise had her private home in the adjacent Graues Haus (Grey House). At the eastern rim of the palace's garden stands the Wörlitz Synagogue built in 1790 as

6561-469: Was worshipped as a power of Jupiter ; that is, Jupiter Vesuvius . The Romans regarded Mount Vesuvius as being devoted to Hercules . The historian Diodorus Siculus relates a tradition that Hercules, in the performance of his labors, passed through the country of nearby Cumae on his way to Sicily and found there a place called "the Phlegraean Plain" ( Φλεγραῖον πεδίον , "fiery"), "from

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