Hokkaido 5: The Tokachi Volcanic Group, Japan

Phreatic eruption at Tokachi Dec 1988. Magmatic explosion, incandescent blocks, and a small pyroclastic surge down the N flank of the volcano. Image courtesy Japan Meteorological Agency1988, via Smithsonian GVP

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Hokkaido 4 – The Akan Caldera, Hokkaido, Japan

Annotated topographic map of Akan caldera, caldera lake, and post-caldera volcanoes. Lake Kussharo is off the image at the upper right. Image courtesy Plate Tectonic Narod.ru.

Hokkaido 2 – The Mashu Caldera, Hokkaido, Japan

Mashu caldera in winter with Kamuinupuri to the right of the photo and the Kamuishu dome in the middle of the lake. Image courtesy Wiki

 

The Toya – Usu post led me to the interesting volcanic history of Hokkaido, Japan.  Found a multiple caldera complex in eastern Hokkaido with three calderas in close proximity to one another.  Will write about these for the next few posts.

Usu, Nakajima and the Toya Caldera, Hokkaido, Japan (Hokkaido 1)

Panoramic photo of Lake Toya and Toya Caldera looking west. Nakajima Island(s) are located in the lake in the right portion of the image. Usu volcano is left of the lake straddling the land between the lake to the right and the ocean to the left. Image courtesy Toya-Usu UNESCO Global Geopark

Miss Akan – or Meakandake, or Me-akan Volcano – Hokkaido, Japan

Meakan crater, looking south. (© propeller2002 on Panoramio)