Don Joao de Castro Bank volcan

Submarine volcano -13 m / - 43 ft

Condition actuelle: normal / en sommeil (1 sur 5)

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

HeureMag. / ProfondeurDistance/Lieu
vendredi, 15. octobre 2021 02:39 GMT (1 séisme)
15 oct. 2021 02:39 (GMT +0) (15. oct. 2021 02:39 GMT)

1 km
37 km (23 mi)
Océan Atlantique Nord, Portugal
mardi, 12. octobre 2021 17:54 GMT (2 séismes)
12 oct. 2021 17:54 (GMT +0) (12. oct. 2021 17:54 GMT)
19 km (12 mi)
Océan Atlantique Nord, Portugal
12 oct. 2021 17:53 (GMT +0) (12. oct. 2021 17:53 GMT)
18 km (11 mi)
Océan Atlantique Nord, Portugal
lundi, 11. octobre 2021 17:02 GMT (2 séismes)
11 oct. 2021 17:02 (GMT +0) (11. oct. 2021 17:02 GMT)
31 km (19 mi)
Océan Atlantique Nord, Portugal
11 oct. 2021 10:34 (GMT +0) (11. oct. 2021 10:34 GMT)
35 km (22 mi)
Océan Atlantique Nord, Portugal


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.
Smithsonian / GVP volcano information

See also: Sentinel hub | Landsat 8
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