Banda Api volcan

caldeira 640 m / 2,100 ft

Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 10 avril 2017 (seismic unrest)
Eruption of Banda Api in 1988 - a large fissure has cut the island in half, producing dense ash emissions and lava flows on both sides that destroyed the village of Batu Angus on the north flank (image: Tom Casadevall / USGS)
Eruption of Banda Api in 1988 - a large fissure has cut the island in half, producing dense ash emissions and lava flows on both sides that destroyed the village of Batu Angus on the north flank (image: Tom Casadevall / USGS)

Banda Api volcano forms a small isolated 3-km-wide island in the Banda Sea, Indonesia, 130 km south of Makulu Island. The volcano rises 4000 m from the sea floor and is the most recent and very active cone of a 7 km wide volcanic caldera mostly under water.
It is one of the most active volcanoes in the region and is known for violent activity including tall ash emissions, lava fountaining, strombolian explosions and occasional lava flows, some of which which have reached the sea. Because of its (for Indonesia) unusually effusive behavior and frequent activity, Banda Api has also been given the nickname "Etna of the Banda Sea".

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Style éruptif tipique: Explosive
Eruptions du volcan Banda Api: 1988, 1901, 1890, 1855, 1835, 1825 (?), 1824, 1820, 1816, 1778, 1775, 1773,
1765, 1762, 1749, 1722, 1712, 1690, 1683, 1635, 1632, 1615, 1614 (?), 1609, 1598, 1586

HeureMag. / ProfondeurDistance/Lieu
vendredi, 22. octobre 2021 21:09 GMT (1 séisme)
23 oct. 2021 06:09 (GMT +9) (22. oct. 2021 21:09 GMT)
3.7

179 km
29 km (18 mi)
Banda Sea, 229 km au sud-est de Ambon City, Maluku, Indonésie
mardi, 19. octobre 2021 10:04 GMT (2 séismes)
19 oct. 2021 19:04 (GMT +9) (19. oct. 2021 10:04 GMT)
2.5

169 km
24 km (15 mi)
Banda Sea, 185 km au sud-est de Ambon City, Maluku, Indonésie
19 oct. 2021 19:04 (GMT +9) (19. oct. 2021 10:04 GMT)
3.1

163 km
19 km (12 mi)
Banda Sea, 196 km au sud-est de Ambon City, Maluku, Indonésie

Introduction

Despite its remote location, Banda Api ranks among the volcanoes in Indonesia with the best documented history (since 1586), thanks to its strategic position at a cross-road of the Portuguese and Dutch spice trade sailing routes.
The caldera has 3 other islands forming the southern and eastern walls: Lonthor, Pisang and Kapal.
Banda Api is the NE-most volcano in the Sunda-Banda volcanic arc. Its lavas are mainly basaltic-to-rhyodacitic in composition.
At least two episodes of caldera formation are believed to have occurred, with the arcuate islands of Lonthor and Neira considered to be remnants of the pre-caldera volcanoes.
Among divers, the surrounding waters are (have been?) famous for the specatcularly large numbers of sea snakes that used to be found here mating in swarms of thousands.

1988 eruption
Banda Api erupted explosively on 9 May 1988. An ash plume of 3 km height was produced and large incandescent bombs were ejected. Lava flows traveled east towards Neira Island. A row of 5 vents were active at the summit. During 8-10 May, frequent earthquakes were felt in Neira village 2 km east of the summit.
1800 residents were evacuated to Neira and Lontar Islands, and 5,000 of Neira city's residents were evacuated to safer areas.
Satellite observations showed that the ash from the eruption reached an altitude of 16 km. The eruption ended in August 1988.
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Source: GVP monthly reports

See also: Sentinel hub | Landsat 8
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