Nigorigawa volcan

caldera, hydrothermal field 356 m / 1,168 ft
Hokkaido, Japon, 42.12°N / 140.45°E
Condition actuelle: normal / en sommeil (1 sur 5)

Nigorigawa (also spelled Nigorikawa) volcano is a geothermal field (Mori geothermal field) in the 3 km diameter Nigorikawa caldera on the shores of Uchiura Bay, southern Hokkaido, Japan. The caldera was formed during a major explosive eruption ca. 12,000 years ago.

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Style éruptif tipique: explosive
Eruptions du volcan Nigorigawa: ca. 12,000 years ago

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Introduction

The Mori geothermal field is located in the late-Pleistocene Nigorikawa caldera in SW Hokkaido. The small 3-km-wide caldera along the shores of Uchiura Bay WNW of Komagatake volcano, was formed during a major explosive eruption about 12,000 years ago.
The caldera-forming eruption of Nigorikawa volcano produced pyroclastic-fall and -surge deposits and pyroclastic-flow deposits that extend northward and westward to the Pacific coast. The town of Nigorigawa is located on the bottom of the flat caldera floor. The Nigorigawa river drains the area through a gap of the NW caldera rim.


See also: Sentinel hub | Landsat 8
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