Ata caldera Volcano
Updated: 16 avril. 2024 10:42 GMT -
caldera 924 m / 3031 ft
Kyushu Island, Japan, 31.22°N / 130.57°E
Condition actuelle: normal / en sommeil (1 sur 5)
Kyushu Island, Japan, 31.22°N / 130.57°E
Condition actuelle: normal / en sommeil (1 sur 5)
Ata is one of the major active caldera systems of Kyushu, located south of the Kagoshima Bay. It had a massive "super-volcano"-style eruption 40,000 years ago, and contains the active Ibusuki volcanic field as well as famous Kaimondake stratovolcano towering above the southern tip of the island.
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Eruptions du volcan Ata caldera: 885 AD
Derniers séismes proches
| Heure | Mag. / Profondeur | Distance / Lieu | |||
| 13 avril 19:57 (GMT +9) | 2.5 136 km | 23 km au sud-ouest |  Japan: SATSUMA PENINSULA REGION | Info | |
| vendredi, 12 avril 2024 GMT (1 séisme) | |||||
| 13 avril 01:00 (GMT +9) | 4.0 147 km | 13 km à l'ouest | Japan: SATSUMA PENINSULA REGION | Info | |
| jeudi, 11 avril 2024 GMT (1 séisme) | |||||
| 11 avril 17:10 (GMT +9) | 3.9 155 km | 22 km au sud-ouest | Japan: SATSUMA PENINSULA REGION | Info | |
Introduction
The submerged 15 x 25 km Ata caldera under Kagoshima Bay is one of several large calderas in southern Kyushu and the source of major pyroclastic flows associated with its formation more than 40,000 years ago.The National Catalogue of the Active Volcanoes of Japan (JMA, 2013) included features of the Ibusuki volcanic field as part of the Ata post-caldera system. That area consists of numerous central cones and maars, the 4.5-km-wide Ikeda caldera, and Kaimondake stratovolcano. The symmetrical andesitic Kaimondake is the most prominent feature, and is capped by a lava dome. Ibusuki has been very active during the Holocene, forming the Ikeda caldera about 4,600 years ago, numerous maars and lava domes. Kaimondake formed during the last 4,000 years, from which all eruptive activity has occurred after about 2,650 years ago. Its last eruption took place in the 9th century. While listed as features of the Ata caldera, JMA (2013) simultaneously listed Kaimondake and the combination of Ikeda and Yamagawa as distinct volcanoes.
Ata caldera Volcano Photos
Un gros arbre est tombé dans l'eau à la plage de Rakata. Ses radices encadrent l'éruption du Krakatau en manière bizarre. (Photo: Tom Pfeiffer)
Les bateaux des pêcheurs avant le Krakatau en éruption. Soir du 4 juin 09. (Photo: Tom Pfeiffer)
Wide-angle view of the caldera of Krakatau; our boat drifts into the picture (r). (Photo: Tom Pfeiffer)
Ciel de pleine lune, caldeira et éruption nocturne de l'Anak Krakatau. (25 novembre 2007) (Photo: Tom Pfeiffer)
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