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Suwanosejima is the second largest of the islands in the Tokara archipelago, and is located 21 kilometres (11 nmi) southwest from Nakanoshima.The highest elevation is Otake (御岳), with a height of 796 metres (2,612 ft) above sea level, which is the exposed cone of an active stratovolcano arising from the ocean floor.
Quaternary Volcanoes of Japan - Geological Survey of Japan; Volcano on Google Map - Geological Survey of Japan; The National Catalogue of the Active Volcanoes in Japan - Japan Meteorological Agency; 日本の主な山岳標高 (Elevation of Principal Mountains in Japan) - Geospatial Information Authority of Japan (in Japanese)
Aira Caldera is a gigantic volcanic caldera located on the southern end of Kyushu, Japan. It is believed to have been formed about 30,000 years ago with a succession of pyroclastic surges . [ 1 ] [ 2 ] It is currently the place of residence to over 900,000 people.
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A volcano that once existed in the northern part of Kagoshima Bay caused an eruption called the Great Aira Eruption about 25,000 years ago, forming the Aira Caldera. Aira City is located on the northwest side of this caldera, on the somma , and there is a stratum called Shirasu, which originated from pyroclastic flows that flowed out during a ...
Mount Aso is the largest active volcano in Japan. 300,000 to 90,000 years ago, there were four eruptions of Mount Aso that emitted huge amounts of volcanic ash that covered all of Kyushu and up to Yamaguchi Prefecture. The Aira Caldera is 17 kilometers long and 23 kilometers wide, located in south Kyushu.
A map of Sakurajima in 1902, showing it as a distinct island. Sakurajima is in the 25 km (15 mi)-wide Aira caldera, which formed in an enormous "blow-out-and-cave-in" eruption around 22,000 years ago. [9] Several hundred cubic kilometres of ash and pumice were ejected, causing the magma chamber underneath the erupting vents to collapse. The ...
The Year Without a Summer was an agricultural disaster; historian John D. Post called it "the last great subsistence crisis in the Western world". [4] [5] The climatic aberrations of 1816 had their greatest effect on New England (US), Atlantic Canada, and Western Europe.