Don Joao de Castro Bank Volcano
Updated: 21 mai 2024 00:44 GMT -
Submarine volcano -13 m / - 43 ft
Azores, Portugal, 38.23°N / -26.63°W
Condition actuelle: normal / en sommeil (1 sur 5)
Azores, Portugal, 38.23°N / -26.63°W
Condition actuelle: normal / en sommeil (1 sur 5)
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Eruptions du volcan Don Joao de Castro Bank: 1720
Derniers séismes proches
| Heure | Mag. / Profondeur | Distance / Lieu | |||
| 14 mai 22:49 (GMT -1) | 2.4 0 km |  Azores Islands, Portugal | Info | ||
| dimanche, 12 mai 2024 GMT (1 séisme) | |||||
| 12 mai 17:35 (GMT -1) | 2.4 0 km | Portugal: Banco D. Joao de Castro | Info | ||
| jeudi, 9 mai 2024 GMT (1 séisme) | |||||
| 9 mai 21:41 (GMT -1) | 2.6 2 km | 18 km au sud-est | Azores Islands, Portugal | Info | |
| mercredi, 8 mai 2024 GMT (1 séisme) | |||||
| 8 mai 12:00 (GMT -1) | 2.8 3.6 km | 23 km au sud-est | Azores Islands, Portugal | Info | |
| mardi, 7 mai 2024 GMT (2 séismes) | |||||
| 7 mai 07:14 (GMT -1) | 2.8 5 km | 21 km au sud-est | Azores Islands, Portugal | Info | |
| 7 mai 07:11 (GMT -1) | 3.0 10.2 km | 28 km au sud-est | Azores Islands, Portugal | Info | |
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.---
Smithsonian / GVP volcano information
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