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News
Tuesday, Aug 20, 2013
A submarine eruption has likely occurred this morning in Indonesia. VSI raised the alert level of Iliwerung volcano from 1 (normal) to 2 (watch) following increased seismic and visual activity from an underwater flank vent called Gunung Hobal. ... [more]
 

Iliwerung volcano eruptions

complex volcano 1018 m / 3,340 ft
Lesser Sunda Islands, Indonesia, -8.53°S / 123.57°E
Eruption list: 2013, 1993, 1983, 1976 (?), 1973-74, 1952, 1951, 1950, 1949, 1948, 1941 (?), 1928, 1910, 1870


1993 submarine eruption
A submarine eruption took place at the Hobal vent at 50 m water depth, ca. 1 km SE off the coast of Iliwerung on 16 September 1993. The eruptions produced a water column 100 m high.

1983 submarine eruption
Explosions occurred 17 and 18 August from a submarine vent south of Iliwerung.

1979 landslide and deadly tsunami
In July 1979, a large landslide removed ca. 50 million m3 from the NW flank of Iliwerung volcano, a third of which reached the sea and caused a tsunami that killed hundreds of people.

1973-74 submarine eruptions, temporary islands
Submarine eruptions between December 1973 and August 1974 created 3 new temporary islands, which subsequently were eroded and disappeared.

1948 flank eruption
An eruption of Iliwerung volcano on 7 May 1948 produced a violent pyroclastic flow which reached the east coast and killed 300 cattle and destroying 100 farming sections. The eruption partly destroyed the lava dome. On 9 May, another eruption occurred at the lower eastern base of Iliwerung at about 140 m altitude and produced an ash plume of 4 km height, and opened a new 120 m wide crater, from which a viscous lava flow emerged, building up a new lava dome, called Iligripe. The new dome reached a height of 50 m by 11 May.
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Source: Report on the volcanic activity and volcanological research in indonesia during the period 1936–1948, R. W. van Bemmelen, Bul. Volc, V.9, Nr 1, 3-2

1870 eruption - summit lava dome
Iliwerung's summit lava dome formed during an eruption in 1870.
 

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