Ibusuki volcanic field

The Ibusuki volcanic field, also known as the Ibusuki Volcano or Ibusuki Volcanic Group (指宿火山群), is an area of current volcanic and geothermal activity at the tip of the Satsuma Peninsula, Kagoshima prefecture, Kyushu, Japan. It is administered as part of Ibusuki City and Kirishima-Kinkowan National Park.

Ibusuki volcanic field
Ibusuki Volcano, Ibusuki Volcanic Group
Volcanic area
Ibusuki volcanic field Relief Map
Ibusuki volcanic field Relief Map
Ibusuki volcanic field is located in Japan
Ibusuki volcanic field
Ibusuki volcanic field
Location of Ibusuki volcanic field in Japan
Coordinates: 31°14′00″N 130°35′00″E
LocationSatsuma Peninsula
Offshore water bodiesKagoshima Bay, Pacific Ocean
AgeHolocene
Formed byVolcanic action
GeologyShimanto supergroup overlaid by volcanic rocks[1]
Highest elevation924 m (3,031 ft)
(Mount Kaimon)
View over the Ibusuki volcanic field with Ikeda Caldera (centre left) and Mount Kaimon (right)

Geology

It is at the eastern margins of the Ata Caldera and has been estimated to contain 54 km3 (13 cu mi) of volcanic material.[2] The Ibusuki volcanic field includes the following recent active volcanoes and their vents:[2]

Geothermal

There are 800 about hot springs concentrated within 5 km of the sea at the southeastern tip of the Satsuma Peninsula. [5] The relatively recently commissioned Yamagawa Binary Power Station (4990 kW) uses local geothermal power.[6]

Tectonics

The north western sector of the zone is limited by the Onkadobira fault scarp. which has been interpreted as part of the rim of the Ata Caldera.[7]

Risk

The field has both tectonic and volcanic risks. With regard to volcanic risks it has been noted that currently we are in the longest period between eruptions for the last 4000 years.[2] Earthquake swarms that do not appear to be related to the volcanoes have been described.[8]

References
  1. "IAVCEI 2013 Scientific Assembly A Guide for Mid-Conference Field Trip". Retrieved 2022-09-19.
  2. Nakamura, Masato (1980). "Possibility of New Volcanic Activity at Ibusuki Volcanic Field, Kyushu, Japan". Bulletin of the Volcanological Society of Japan. Second Series. 25 (3): 195–205. doi:10.18940/kazanc.25.3_195. ISSN 2433-0590.
  3. Okuno, M.; Nakamura, T.; Kobayashi, T. (1997). "AMS 14C Dating of Historic Eruptions of the Kirishima, Sakurajima and Kaimondake Volcanoes, Southern Kyushu, Japan". Radiocarbon. 40 (2): 825–832. doi:10.1017/S0033822200018786. S2CID 133569925.
  4. Inakura, Hirohito; Naruo, Hideto; Okuno, Mitsuru; Kobayashi, Tetsuo (2014). "Eruptive History of Ikeda Volcano, Ibusuki Area, Southern Kyushu, Japan". Bulletin of the Volcanological Society of Japan. 59 (4): 255–268. doi:10.18940/kazan.59.4_255. ISSN 0453-4360.
  5. "SOCIETY OF ECONOMIC GEOLOGISTS KYUSHU UNIVERSITY STUDENT CHAPTER – SEG KYUDAI FIELD EXCURSION REPORT" (PDF). 2020.
  6. Kondo, Saki; Oyama, Hiroshi; Yamada, Shigeto (2019). "Yamagawa Binary Power Station Geothermal ORC plant in Japan" (PDF). GRC Transactions. 43.
  7. Matumoto, Tadaiti (1965-08-28). "Calderas of Kyusyu" (PDF). Transactions of the Luna Geological Field Conference. Retrieved 2022-09-19.
  8. Kakuta, Toshiki (1984). "LOCAL EARTHQUAKE SWARM OCCURRING IN SOUTH KYUSHU (Japanese)". Journal of Physics of the Earth. 32 (3): 143–160. doi:10.4294/jpe1952.32.143. ISSN 1884-2305.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.