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Ambrym Volcano

Updated: 29 mars. 2024 04:51 GMT -
shield volcano 1334 m (4,377 ft)
Vanuatu, -16.25°S / 168.12°E
Condition actuelle: en vigilance - niveau agité (2 sur 5)
Last update: 7 févr. 2024 (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.

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Style éruptif tipique: Effusive, formation of lava lakes
Eruptions du volcan 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

Derniers séismes proches

HeureMag. / ProfondeurDistance / Lieu
23 mars 15:18 (Efate)
23 mars. 04:18 GMT
4.9

187 km
19 km au nord-ouest Mer de Corail, Vanuatu, 19 km au nord-ouest de Ambrym , Malampa
I FELT IT
Info

Introduction

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

Latest satellite images

Ambrym satellite image sat1Ambrym satellite image sat2
Ambrym Volcano Tours
Expédition de 15 jours sur les volcans actifs du Vanuatu: Yasur, Marum et Benbow
15 jours (14 nuits) au Vanuatu - Modérée
Prix 4490 €
2-16 juil. 2024
mer., 7 févr. 2024, 15:00

Ambrym volcano (Vanuatu) - Smithsonian / USGS Weekly Volcanic Activity Report for 31 January-6 February 2024 (Continuing Activity)

The Vanuatu Meteorology and Geo-Hazards Department (VMGD) reported that lava effusion in Ambrym began on 13 January and lasted for four days, producing a lava flow in Benbow Crater. Since then, steam emissions were ongoing and observed through 31 January. The Alert Level remained at 2 (on a scale of 0-5). ... Read all
jeu., 1 févr. 2024, 11:00

Ambrym volcano (Vanuatu) - Smithsonian / USGS Weekly Volcanic Activity Report for 31 January-6 February 2024 (Continuing Activity)

The Vanuatu Meteorology and Geo-Hazards Department (VMGD) reported that lava effusion in Ambrym began on 13 January and lasted for four days, producing a lava flow in Benbow Crater. Since then, steam emissions were ongoing and observed through 31 January. The Alert Level remained at 2 (on a scale of 0-5). ... Read all

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