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Don Joao de Castro Bank volcan

Mise à jour: 26 nov.. 2022 11:28 GMT -
Submarine volcano -13 m / - 43 ft
Azores, Portugal, 38.23°N / -26.63°W
Condition actuelle: normal / en sommeil (1 sur 5)

Montrer carte interactive
Style éruptif tipique: unspecified
Eruptions du volcan Don Joao de Castro Bank: 1720 

Derniers séismes proches

HeureMag. / ProfondeurDistance/Lieu
mercredi, 23 novembre 2022 GMT (1 séisme)
23 nov. 2022 09:12 (GMT -1) (23 nov.. 2022 10:12 GMT)
2.9

5 km
39 km (24 mi)
Océan Atlantique Nord, 32 km au sud-est de Angra do Heroismo, Azores, Portugal
lundi, 21 novembre 2022 GMT (1 séisme)
21 nov. 2022 01:28 (GMT -1) (21 nov.. 2022 02:28 GMT)
2.6
17 km (10.6 mi)
Océan Atlantique Nord, 89 km au nord-ouest de Ponta Delgada, Azores, Portugal

Introduction

Don Joao de Castro Bank is a large submarine volcano that rises to within 13 m of the sea surface roughly halfway between Terceira and San Miguel Islands. Pillow lavas form the base of the volcano, which is capped by basaltic hyaloclastites. A submarine eruption during December 1720 produced an ephemeral island that attained a length of 1.5 km and an altitude of about 250 m before it was eroded beneath the sea surface two years later. The volcano (also spelled Dom Joao de Castro) was named after the Portuguese hydrographic survey vessel that surveyed the bank in 1941. Two youthful parasitic craters, one tephra covered and the other sediment free, are located on the NW flank. The submarine volcano has an impressive shallow fumarole field and remains seismically active.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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