Sirung volcano eruptions

stratovolcano 862 m / 2,828 ft
Pantar Island, Indonesia , -8.51°S / 124.13°E
Eruption list: 2012, 2004 (?), 1970, 1965, 1965, 1964, 1960, 1953, 1947, 1934, 1927 (?), 1899 (?), 1852 (?)


Sirung hot springs & crater lake

Strong fumaroles and boiling springs are found in Sirung's large crater. The crater contains often a highly acid (pH = 0.75), warm (40 deg C), grey-coloured crater lake where volcanic gasses escape in bubbles. The gasses are unusually rich in chlorine. The lake is similar to Kawah lien crater lake in East Java.
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Beangabang Bay hot springs

A second area of hot springs is found on the beach of Beangabang Bay east of Sirung's crater. Water from these springs mixes with seawater.

2004 uncertain eruption

Eruptions of "smoke and dust" were reported by press around 13 May 2004, but according to the Indonesian Volcanological Survey, these reports were false.

1987 earthquake

A volcanologist from the Indonesian Volcanological Survey visited the volcano on 12 December, following an earthquake of M6.5 on 26 November. Fumaroles and the crater lake were normal and showed no evidence of increased activity. The only notable change in the crater was a fresh landslide scar that perhaps had resulted from the earthquake.

1934 eruption

Sirung volcano erupted on 14-15 June 1934. Detonations were heard in Ilakalau village and the following morning the crater rim was observed to be covered by white fresh ash deposits. On 16 June lapilli fell in Ilakalau village. On 17 June dense ash clouds were erupted 5-10 minutes. On 26 June, 30 m high lava fountains or strombolian activity were observed at the crater.
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