Don Joao de Castro Bank volcano

Actualizado: 16 ago. 2022 16:31 GMT - Refresh
Submarine volcano -13 m / - 43 ft
Azores, Portugal, 38.23°N / -26.63°W
Current status: normal or dormant (1 out of 5)

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Typical eruption style: sin especificar
Erupciones del volcán Don Joao de Castro Bank: 1720 
Lastest nearby earthquakes:
Fecha / HoraRevista / Prof.Distancia/Ubicación
viernes, 5 agosto 2022 GMT (1 sismo)
5 ago 2022 11:15 GMT
2.0

15 km
13 km (8.1 mi)
Océano Atlántico, 57 km al sureste de Angra do Heroísmo, Portugal

Background

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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