Vanuatu · Vulcano a scudo
Ambrym
- Tipo
- Vulcano a scudo
- Altitudine
- 1334 m
- Ultima eruzione
- 2024
- Tipo
- Vulcano a scudo
- Paese
- Vanuatu
- Regione
- Pacifico sud-occidentale / Vanuatu Volcanic Arc
- Altitudine
- 1334 m
- Coordinate
- -16.250, 168.120
- Ultima eruzione
- 2024
- Contesto tettonico
- Zona di subduzione / Crosta intermedia (15-25 km)
- Forma vulcanica
- A scudo
- Roccia principale
- Basalto / Picrobasalto
Sintesi geologica
Ambrym is a large basaltic volcano with a 12-km-wide caldera formed during a major Plinian eruption with dacitic pyroclastic flows about 1,900 years ago. A thick, almost exclusively pyroclastic sequence, initially dacitic then basaltic, overlies lava flows of a pre-caldera shield volcano. Post-caldera eruptions, primarily from Marum and Benbow cones, have partially filled the caldera floor and produced lava flows that ponded on the floor or overflowed through gaps in the caldera rim. Post-caldera eruptions have also formed a series of scoria cones and maars along a fissure system oriented ENE-WSW. Eruptions have been frequently reported since 1774, though mostly limited to extra-caldera eruptions that would have affected local populations. Since 1950 observations of eruptive activity from cones within the caldera or from flank vents have occurred almost yearly.
Sintesi da Wikipedia
Riassunto in ingleseAmbrym is a volcanic island in Malampa Province in the archipelago of Vanuatu. It is located near the center of the archipelago of Vanuatu, and also hosts one of the most active volcanoes in the world, which includes lava lakes in two craters near the summit. It is currently the least populous island in the country.
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Storia delle eruzioni
60 registrateGlossarioCronologia dettagliata
- 2024VEI 0Osservata2024-01-13 – 2024-01-16
- 2024VEI 0Osservata2024-10-31 – 2024-11-02
- 2022VEI 1Osservata2022-01-25 – 2022-02-02Benbow Crater
- 2008VEI 2Osservata2008-05-23 – 2018-12-17Benbow and Marum
- 2006VEI 2Osservata2006-11-08 – 2007-12-27Marum (Mbwelesu)
- 1996VEI 1Osservata1996-06-16 – 2005-08-16Benbow, Marum, Niri Mbelesu, Mbwelesu
- 1994VEI 1Osservata1994-12-16 – fine sconosciutaBenbow and Marum
- 1990VEI 2Osservata1990-09-16 – 1991-07-16Mbwelesu, Niri Mbwelesu, Niri Taten
- 1989VEI 2Osservata1989-04-24 – 1989-12-23Marum, Benbow, Niri Mbwelesu Taten
- 1988VEI 3Osservata1988-02-12 – 1988-08-23Benbow, Mbwelesu, Marum, Niri Taten
- 1986VEI 2Osservata1986-11-13 – 1986-11-19New cone 3 km east of Marum
- 1984VEI 2Osservata1984-07-02 – 1986-03-08
- 1983VEI 2Osservata1983-07-02 – fine sconosciutaMarum
- 1981VEI 2Osservata1981-02-20 – 1981-09-30Benbow, Marum
- 1980VEI 3Osservata1980-05-16 – 1980-08-18Marum
- 1979VEI 2Osservata1979-01-26 – 1979-02-18Benbow
- 1979VEI 2Osservata1979-06-06 – 1979-09-16Benbow, Marum
- 1977VEI 2Osservata1977-01-20 – 1977-01-28
- 1977VEI 2Osservata1977-08-16 – 1977-09-30
- 1973VEI 3Osservata1973-04-15 – 1976-10-14Benbow, Mbuelesu, Marum
- 1972VEI 3Osservata1972-04-15 – 1972-08-15Benbow, Marum
- 1971VEI 2Osservata1971-02-03 – 1971-11-05Marum, Benbow
- 1967VEI 2Osservata1967-07-16 – 1970-08-29Marum, Benbow, Mbuelesu
- 1964VEI 2Osservata1964-02-16 – 1966-09-16Marum, Benbow
- 1963VEI 2Osservata1963-08-30 – 1963-09-23Benbow, Marum
- 1961VEI 3Osservata1961-08-15 – 1963-04-03Benbow, Marum, south of Marum
- 1960VEI 1Osservata1960-09-17 – fine sconosciutaMbuelesu, Benbow, near Marum
- 1959VEI 2Osservata1959-04-16 – fine sconosciutaMarum
- 1958VEI 2Osservata1958-11-18 – fine sconosciutaBenbow and Marum
- 1957VEI 1Osservata1957-08-26 – 1957-10-16Benbow, Marum
- 1955VEI 2Osservata1955-07-02 – fine sconosciutaBenbow
- 1954VEI 2Osservata1954-07-02 – fine sconosciutaBenbow
- 1953VEI 2Osservata1953-05-16 – 1953-10-13Benbow, Mbuelesu, S flank of Benbow
- 1952VEI 2Osservata1952-08-10 – 1952-12-26Benbow
- 1950VEI 4Osservata1950-12-06 – 1951-11-25Benbow
- 1942VEI 2Osservata1942-06-06 – fine sconosciutaNW flank of Benbow
- 1938VEI 2Osservata1938-07-02 – fine sconosciutaBenbow, Marum ?
- 1937VEI 2Osservata1937-03-27 – 1937-04-16Benbow and west flank
- 1935VEI 2Osservata1935-09-16 – 1936-01-16Benbow
- 1929VEI 2Osservata1929-06-28 – 1929-07-01Benbow, west flank, Marum
- 1927VEI ?Osservata1927-01-27 – 1927-01-27
- 1915VEI 2Osservata1915-10-20 – fine sconosciutaMarum, crater at SE point
- 1913VEI 3Osservata1913-10-14 – 1914-07-02Benbow, west flank, Marum
- 1912VEI ?Osservata1912-07-02 – fine sconosciutaMarum ?, west flank ?
- 1910VEI 0Osservata1910-07-02 – fine sconosciutaBase of Marum
- 1909VEI 2Osservata1909-07-28 – fine sconosciuta
- 1908VEI 2Osservata1908-07-02 – fine sconosciuta
- 1898VEI 1Osservata1898-03-26 – fine sconosciuta
- 1894VEI 3Osservata1894-10-15 – 1895-02-10Benbow and west flank
- 1888VEI 2Osservata1888-02-24 – 1888-04-16SE flank (6 km from SE Point), Marum
- 1886VEI 2Osservata1886-07-16 – fine sconosciuta
- 1884VEI 2Osservata1884-07-02 – fine sconosciutaMarum and/or Benbow
- 1883VEI 2Osservata1883-07-02 – fine sconosciutaMarum
- 1875VEI ?Osservata1875-05-03 – fine sconosciuta
- 1871VEI 2Osservata1871-07-02 – fine sconosciuta
- 1870VEI ?Metodo non indicato1870-07-02 – fine sconosciuta
- 1863VEI 2Osservata1863-07-02 – 1864-07-02
- 1820VEI ?Osservata1820-07-02 – fine sconosciutaWest flank
- 1774VEI 2Osservata1774-07-02 – fine sconosciuta
- 50 (±100 anni)VEI 6Stima geologica50 – fine sconosciuta
Vulcani nelle vicinanze
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