Mashu vulcano

Caldera 855 m / 2,805 ft
Hokkaido, Giappone, 43.51°N / 144.57°E
Stato attuale: normal or dormant (1 di 5)

Mashu volcano is a 7 km wide caldera in NE Hokkaido, Japan.
The caldera formed ca. 7000 years ago and truncates a stratovolcano which formed the ESE rim of the large Kutcharo caldera to the west. The steep-walled Mashu caldera contains Lake Mashu (摩周湖 Mashū-ko), known for its very clear water, and is one of the scenic highlights of Hokkaido.

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Stile eruttivo tipico: explosive
Eruzioni del vulcano Mashu: 1080 ± 100 years, 350 AD ± 100 years, 150 AD ± 100 years, 2050 BC ± 40 years, 2800 BC ± 1000 years, 3550 BC ± 40 years, 5550 BC ± 100 years (Plinian eruption, caldera formation) (radiocarbon dated)

Latest nearby earthquakes

Data / oraMag. / ProfonditàDistanza/Ubicazione
Thu, 22 Jul 2021 (GMT) (1 terremoto)
Jul 22, 2021 16:47:24.12 (22 Jul 2021 07:47:24 GMT)
3.2

140 km
37 km (23 mi)
18 km a sud ovest da Shibetsu, Hokkaido, Giappone
Sat, 17 Jul 2021 (GMT) (1 terremoto)
Jul 17, 2021 12:19:03.88 (17 Jul 2021 03:19:03 GMT)
3.9

154 km
35 km (22 mi)
Kawakami-gun, 26 km a nord est da Kushiro, Hokkaido, Giappone

Sfondo

A small andesitic stratovolcano, Kamuinupuri, was constructed beginning about 4000 years ago in the SE part of of the deep caldera lake. The latest dated eruption of the volcano was a large explosive eruption about 1000 years ago, which created a 1.2 x 1.5 km crater at the summit of Kamuinupuri.
Kamuishu is a small island in the center of Lake Mashu. It is the tip of a mostly submerged dacitic lava dome.


See also: Sentinel hub | Landsat 8
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