Miravalles vulcano

Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Stato attuale: normal or dormant (1 di 5)

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Stile eruttivo tipico: non specificato
Eruzioni del vulcano Miravalles: 1946 

Data / oraMag. / Prof.Distanza/Ubicazione
giovedì, 16 settembre 2021 06:28 GMT (1 terremoto)
16 set 2021 00:28 (GMT -6) (16 set 2021 06:28 GMT)
3.7

57 km		42 km (26 mi)
9.8 km a ovest da Liberia, Provincia de Guanacaste, Costa Rica
mercoledì, 15 settembre 2021 18:28 GMT (3 sismi)
15 set 2021 12:28 (GMT -6) (15 set 2021 18:28 GMT)
3.7

37 km		42 km (26 mi)
9.7 km a ovest da Liberia, Provincia de Guanacaste, Costa Rica
15 set 2021 01:17 (GMT -6) (15 set 2021 07:17 GMT)
2.4

3 km		28 km (17 mi)
Tilaran, 24 km a nord est da Canas, Cañas, Provincia de Guanacaste, Costa Rica
15 set 2021 01:17 (GMT -6) (15 set 2021 07:17 GMT)
3.1

6 km		31 km (19 mi)
Guatuso, Provincia de Alajuela, 25 km a nord est da Canas, Costa Rica

Sfondo

Miravalles is a 2028-m-high andesitic stratovolcano that is one of five post-caldera cones along a NE-trending line within the broad 15 x 20 km Guayabo (Miravalles) caldera. The caldera was formed during several major explosive eruptions that produced voluminous dacitic-rhyolitic pyroclastic flows between about 1.5 and 0.6 million years ago. Growth of post-caldera volcanoes in the eastern part of the caldera that overtopped much of the eastern and southern caldera rims was interrupted by edifice collapse that produced a major debris avalanche to the SW. Morphologically youthful lava flows cover the western and SW flanks of the post-caldera Miravalles complex, which rises above the town of Guayabo on the flat western caldera floor. The only reported historical eruptive activity was a small steam explosion on the SW flank in 1946. High heat flow remains, and Miravalles is the site of the largest developed geothermal field in Costa Rica.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8
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