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Hiuchigatake volcano lies in Nikko National Park and erupted the 8 cu km Hiuchigatake-Nanairi tephra and pyroclastic flow deposit about 170,00-160,000 years ago. Two lava domes at the southern end of the summit of Hiuchigatake stratovolcano overlook Ozenuma lake, a popular hiking destination in the national park. The southern of the two domes, Akanagure, produced a series of viscous lava flows about 3500 years ago that extend to the southern and western flanks the volcano. The northern dome, Miike, was the source of a tephra layer correlated with a report of historical activity in 1544 (Hayakawa, 1994b).
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1544 Jul 28||Unknown||Confirmed||2||Historical Observations||Miike-dake lava dome|
|6050 BCE (?)||Unknown||Confirmed||Tephrochronology||Akanagure lava dome|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Hiuchiga-take | Hiuchi|
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Snow-capped Hiuchi volcano rises above Ozenuma lake, a popular hiking destination in Nikko National Park, in this aerial view from the SE. Two lava domes at the southern end of the summit of Hiuchi stratovolcano have been active during the Holocene. The northern dome produced viscous lava flows about 3500 years ago, and the southern dome was the source of an explosive eruption in 1544 AD.
Copyrighted photo by Shun Nakano, 1996 (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. 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.
Hayakawa Y, 1994. Discovery of an eruption product of ca. 500 years ago at Hiuchigatake. Bull Volc Soc Japan (Kazan), 39: 243-246 (in Japanese).
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Japan Association Quaternary Research, 1987. Quaternary Maps of Japan: Landforms, Geology, and Tectonics. Tokyo: Univ Tokyo Press.
Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.
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/.
Ono K, Soya T, Mimura K, 1981. Volcanoes of Japan. Geol Surv Japan Map Ser, no 11, 2nd edition, 1:2,000,000.
Yamamoto T, 1999. Plinian fall deposits in the Fukushima-Tochigi area during 0.3-0.1 Ma: stratigraphy of marker tephra layers erupting from Numazawa, Hiuchigatake, Kinunuma, and Sunagohara volcanoes. Bull Geol Surv Japan, 50: 743-767.