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Fotos al azar
The crater of Benbow in the Ambrym caldera
The crater of Benbow in the Ambrym caldera

Latest news from Ambrym:

Tuesday, Mar 12, 2019
No eruptive activity has been observed for 3 months, meaning the long-term eruption which began in 2008 has come to an end. ... [Leer más]
Satellite image of Ambrym volcano on 17 Dec 2018
Monday, Dec 17, 2018
Volcanic Ash Advisory Center Wellington (VAAC) issued the following report: ... [Leer más]
 

Ambrym volcano

Volcán en escudo 1334 m (4,377 ft)
Vanuatu, -16.25°S / 168.12°E
Current status: restless (2 out of 5)
Ambrym webcams / datos en tiempo real | Reports
Ambrym volcano videos
Ambrym volcano books | Tours
Last update: 12 Mar 2019 (Eruption has ended)
Typical eruption style: Effusive, formation of lava lakes
Erupciones del volcán 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 -ongoingThe crater of Benbow (Ambrym) No hay terremotos recientes
Fecha / HoraRevista / ProfundidadDistanciaUbicación
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.

Background:

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:




Latest satellite images

Map of the Ambrym caldera

map of Ambrym caldera
A sketch map of the vast caldera of Ambrym showing the location of its multiple vents. Taken from Stromboli Online.
 

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