Don Joao de Castro Bank vulcano
Aggiornato: 29 nov. 2023 16:23 GMT -
Submarine volcano -13 m / - 43 ft
Azores, Portugal, 38.23°N / -26.63°W
Stato attuale: normal or dormant (1 di 5)
Azores, Portugal, 38.23°N / -26.63°W
Stato attuale: normal or dormant (1 di 5)
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Eruzioni del vulcano Don Joao de Castro Bank: 1720
Latest nearby earthquakes
| Data / ora | Mag. / Prof. | Distanza/Ubicazione | ||
| mercoledì, 22 novembre 2023 GMT (2 sismi) | ||||
| 22 nov 22:59 (GMT -1) (22 nov 23:59 GMT) | 3.0 23 km | 26 km (16 mi) 46 km a sud-est da Angra do Heroísmo, Portogallo | ||
| 22 nov 21:32 (GMT -1) (22 nov 22:32 GMT) | 2.2 4.9 km | 29 km (18 mi) 42 km a sud-est da Angra do Heroísmo, Portogallo | ||
| martedì, 21 novembre 2023 GMT (1 sismo) | ||||
| 21 nov 19:02 (GMT -1) (21 nov 20:02 GMT) | 2.0 | 26 km (16 mi) 44 km a sud-est da Angra do Heroísmo, Portogallo | ||
Sfondo
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 | NASA FIRMS
