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There are no activity reports for Midagahara.
Available Weekly Reports
There are no Weekly Reports available for Midagahara.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|[ 1858 Apr 8 ]||[ Unknown ]||Discredited|
|1839 Jun 10||Unknown||Confirmed||2||Historical Observations||Jigoku-dani|
|1836 Jul 9||Unknown||Confirmed||1||Historical Observations||Jigoku-dani|
|[ 0704 ]||[ Unknown ]||Uncertain|
|0900 BCE (?)||Unknown||Confirmed||Tephrochronology||Jigoku-dani|
|3200 BCE ± 1000 years||Unknown||Confirmed||Tephrochronology||Jigoku-dani|
|7300 BCE ± 1000 years||Unknown||Confirmed||Tephrochronology||Jigoku-dani|
The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).
Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.
Kudo T, Hoshizumi H, 2006-. Catalog of eruptive events within the last 10,000 years in Japan, database of Japanese active volcanoes. Geol Surv Japan, AIST, http://riodb02.ibase.aist.go.jp/db099/eruption/index.html.
Kuno H, 1962. Japan, Taiwan and Marianas. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 11: 1-332.
Kusakabe M, Hayashi N, Kobayashi T, 1983. Genesis of banded sulfur sediments at Jigokudani valley, Tateyama volcano, Japan. Bull Volc Soc Japan (Kazan), 28: 245-261 (in Japanese with English abs).
Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST, http://www.aist.go.jp/RIODB/strata/VOL_JP/.
Yamasaki M, Nakanishii N, Miyata K, 1966. History of Tateyama volcano. Sci Rpt Kanazawa Univ, 11: 73-92.
Midagahara volcano is a dissected andesitic-to-dacitic stratovolcano on a plateau surrounded by high peaks of the North Japan Alps. The granite-and-gneiss peak of Tateyama lies immediately to the east. Formation of a 4-km-wide erosional caldera was followed by repeated eruptions of lava and pyroclastics forming the Midagahara plateau that was later dissected by the Yukawa river. Holocene eruptions have been restricted to small phreatic explosions that formed craters. A minor historical eruption occurred in the 19th century. An earthquake swarm took place in 1990. Hot springs occur in seven locations on the floor of the poorly defined erosional caldera.