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Ambrym Vulkan

Aktualisiert: 26. Sep. 2022 18:41 GMT -
Schildvulkan 1334 m (4,377 ft)
Vanuatu, -16.25°S / 168.12°E
Aktueller Status: normal / ruhend (1 von 5)
Last update: 5 Mai 2022 (Smithsonian / USGS Weekly Volcanic Activity Report)
The crater of Benbow (Ambrym)
The crater of Benbow (Ambrym)

Ambrym is a large basaltic volcano with a 12-km-wide caldera. It is not only one of the most active volcanoes of Vanuatu, but in the world. Its most active craters often contain small lava lakes.

Interaktive Karte anzeigen
Typische Aktivität: Effusiv, Bildung von Lavaseen
Ausbrüche des Ambrym: 1774, 1820(?), 1863, 1870(?), 1871, 1883, 1884, 1886, 1888, 1894, 1898, 1908, 1909(?), 1910, 1912, 1913, 1915, 1929, 1935, 1937, 1938, 1942, 1950, 1952, 1953, 1954, 1955, 1957, 1958, 1960, 1961, 1963, 1964, 1967, 1971, 1972, 1973, 1977 (2x), 1979 (2x), 1980, 1981, 1983, 1984, 1986, 1988, 1989, 1990, 1994, 1996, 2006, 2008, 2009 -ongoing

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Beschreibung

Ambrym is a large basaltic volcano with a 12-km-wide caldera. It is not only one of the most active volcanoes of Vanuatu, but also in the world.
Ambrym's caldera is a wide, impressive moon-like landscape containing an ash plain, cut by innumerable erosion gullies and containing several active craters and recent lava flows.
The caldera is believed to have formed during a major plinian eruption with dacitic pyroclastic flows about 1900 years ago. Activity after the caldera formation was concentrated around two vents that have become large complex craters called Marum and Benbow. Often, both Marum and Benbow (as well as other craters) contain small lava lakes, which occasionally erupt lava flows onto the caldera floor, or even exit the caldera through erosion gaps.
The post-caldera eruptions have also formed a series of scoria cones and maars along a fissure system oriented ENE-WSW. Eruptions have apparently occurred almost yearly during historical time from cones within the caldera or from flank vents. However, from 1850 to 1950, reporting was mostly limited to extra-caldera eruptions that would have affected local populations.
Occasionally, explosive eruptions occur from the craters, mostly because of water-magma interaction. Such eruptions produce tall clouds of ash, and can cause serious health problems in the local population because the ash contaminates ground water.

Ambrym Fotos




See also: Sentinel hub | Landsat 8 | NASA FIRMS

Ambrym Vulkanreisen

8-tägige Vulkanexpedition nach Ambrym, Vanuatu
8-9 Tage - Mittel
Preis 3150 €
zur Zeit keine Termine
Vanuatu (Südsee)
Feuerberge der Südsee
16-tägige Vulkanexpedition nach Vanuatu: Ambrym und Yasur
16 Tage /15 Nächte - Mittel
Preis 4150 €
2.-16. Jul 2023
The crater of Benbow in the Ambrym caldera
The crater of Benbow in the Ambrym caldera

Do, 5. Mai 2022, 06:40

Ambrym volcano (Vanuatu) - Smithsonian / USGS Weekly Volcanic Activity Report for 27 April-3 May 2022 (Continuing Activity)

The Vanuatu Meteorology and Geo-Hazards Department (VMGD) reported that incandescence from Ambrym's Benbow Crater was visible during 25 January-3 February from a lava flow that had effused from a new vent on the NW part of the crater floor. Recent observations indicated that gas and ash was no longer being emitted from the crater, and seismicity had decreased and stabilized. The Alert Level was lowered to 1 (on a scale of 0-5) on 28 April. ... Read all
So, 1. Mai 2022, 21:19

Ambrym volcano (Vanuatu): Volcanic Alert Level lowered to Level 1

Ambrym volcano as visible in the webcam today (image: VMGD)
The alert status for the volcano was lowered to "Level 1", as the activity rapidly decreased after the intense phase from Benbow crater at the end of January 2021. ... Read all
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