Miravalles volcan
Mise à jour: 29 janv.. 2023 08:09 GMT -
Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5)
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5)
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Eruptions du volcan Miravalles: 1946
Derniers séismes proches
| Heure | Mag. / Profondeur | Distance/Lieu | ||
| mercredi, 25 janvier 2023 GMT (2 séismes) | ||||
| 25 janv. 2023 12:49 (GMT -6) (25 janv.. 2023 18:49 GMT) | 2.9 8 km | 14 km (8.7 mi) 29 km au sud-est de San Jose, Upala, Provincia de Alajuela, Costa Rica | ||
| 25 janv. 2023 05:37 (GMT -6) (25 janv.. 2023 11:37 GMT) | 2.9 6 km | 14 km (8.7 mi) Provincia de Alajuela, 45 km à l'est de Liberia, Costa Rica | ||
| mardi, 24 janvier 2023 GMT (1 séisme) | ||||
| 23 janv. 2023 23:37 (GMT -6) (24 janv.. 2023 05:37 GMT) | 3.1 3 km | 20 km (12 mi) 17 km au nord-est de Liberia, Provincia de Guanacaste, Costa Rica | ||
| mercredi, 25 janvier 2023 GMT (2 séismes) | ||||
| 25 janv. 2023 12:49 (GMT -6) (25 janv.. 2023 18:49 GMT) | 2.9 8 km | 14 km (8.7 mi) 29 km au sud-est de San Jose, Upala, Provincia de Alajuela, Costa Rica | ||
| 25 janv. 2023 05:37 (GMT -6) (25 janv.. 2023 11:37 GMT) | 2.9 6 km | 14 km (8.7 mi) Provincia de Alajuela, 45 km à l'est de Liberia, Costa Rica | ||
| mardi, 24 janvier 2023 GMT (1 séisme) | ||||
| 23 janv. 2023 23:37 (GMT -6) (24 janv.. 2023 05:37 GMT) | 3.1 3 km | 20 km (12 mi) 17 km au nord-est de Liberia, Provincia de Guanacaste, Costa Rica | ||
Introduction
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.---
Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS
