Ambrym Volcano
Updated: 21. Mai 2024 18:02 GMT -
shield volcano 1334 m (4,377 ft)
Vanuatu, -16.25°S / 168.12°E
Aktueller Status: unruhig (2 von 5)
Vanuatu, -16.25°S / 168.12°E
Aktueller Status: unruhig (2 von 5)
Last update: 1 Mai 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)
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.
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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
Letzte Erdbeben in der Nähe
Uhrzeit | Mag. / Tiefe | Entfernung / Ort |
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 Volcano Photos
Ein sehr ungewöhnlich freier Blick auf das Innere des Benbow Kraters am Abend. (Photo: Tom Pfeiffer)
Sehr flüssige Lava wird aus dem Schlot geworfen. (Photo: Tom Pfeiffer)
Süd- (l) und Nordschlot (r) im Bembow mit ihren kleinen Lavaseen am Abend. Heftiger Schlackenwurf aus dem Südkrater. (Photo: Tom Pfeiffer)
Der tiefe zweite Krater von Benbow (Photo: Yashmin Chebli)
Latest satellite images
Ambrym Volcano Tours
Vanuatu (Südsee)
Feuerberge der Südsee
16-tägige Vulkanexpedition nach Vanuatu: Ambrym und Yasur
16 Tage /15 Nächte - Mittel
Preis 4490 €
Preis 4490 €
2.-16. Jul 2024