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Oshima

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  • Country
  • Subregion Name
  • Volcano Type
  • Last Known Eruption
  • 764 m
  • 34.721°
  • 139.398°
  • Elevation
  • Latitude
  • Longitude

No latest activity reported for Oshima.



no

 Available Weekly Reports


There are no weekly reports found.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).


Start Date (mm/dd/yyyy)
Stop Date (mm/dd/yyyy)
VEI
10/4/1990
10/4/1990
2
11/16/1987
1/27/1988
2
11/15/1986
12/18/1986
3
2/28/1974
6/20/1974
1
4/5/1971
4/5/1971
1
1/26/1970
1/31/1970
1
6/30/1970
11/12/1970
1
1/19/1969
7/0/1969
1
1/19/1968
1/19/1968
1
7/28/1968
7/28/1968
1
5/0/1967
8/0/1967
1
11/25/1965
6/13/1966
1
1/0/1962
5/0/1965
1
0/0/1961
0/0/
1/0/1959
1/0/1959
1
10/0/1959
11/0/1960
1
4/17/1958
6/13/1958
1
8/0/1957
12/0/1957
1
1/3/1956
1/6/1956
1
8/25/1956
8/26/1956
1
10/5/1953
2/8/1954
1
7/16/1950
6/28/1951
2
8/18/1940
8/19/1940
1
2/0/1939
2/0/1939
1
9/1/1939
9/16/1939
1
8/11/1938
8/11/1938
1
7/17/1937
8/0/1937
0
4/26/1935
5/6/1935
0
4/15/1934
4/25/1934
0
9/0/1934
0/0/
10/14/1933
11/0/1933
0
8/7/1928
8/8/1928
2
12/8/1922
1/30/1923
1
0/0/1920
0/0/
5/18/1919
12/23/1919
0
10/10/1915
10/25/1915
2
5/15/1914
5/26/1914
2
2/23/1912
1/25/1913
1
12/0/1910
0/0/
1
12/27/1876
2/5/1877
2
0/0/1870
0/0/
2
12/31/1868
0/0/
0/0/1846
0/0/
2
0/0/1837
0/0/1838
2
0/0/1827
0/0/
0/0/1822
0/0/1824
2
0/0/1821
0/0/
3
9/26/1803
11/14/1803
2
0/0/1792
0/0/
2
0/0/1789
0/0/
2
0/0/1783
0/0/1786
2
8/31/1777
0/0/1779
3
4/12/1695
0/0/
2/14/1684
0/0/1690
3
8/26/1637
4/0/1638
0/0/1634
0/0/
0/0/1623
0/0/
10/15/1612
0/0/
10/0/1600
0/0/
10/7/1552
10/15/1552
3
0/0/1471
0/0/
2
8/0/1442
0/0/1443
5/14/1421
0/0/
4
9/2/1416
0/0/1417
2
5/21/1415
0/0/
9/15/1338
11/15/1338
3
0/0/1307
0/0/
3
0/0/1245
0/0/
1
0/0/1183
0/0/
4
11/18/1112
12/26/1112
0/0/936
0/0/
6/29/886
0/0/
4
9/14/854
0/0/856
4
8/0/838
0/0/
3
0/0/822
0/0/
3
0/0/713
0/0/
3
0/0/700
0/0/
3
11/29/684
0/0/
0/0/680
3/26/681
4
0/0/654
0/0/
3
0/0/625
0/0/
3
0/0/600
0/0/
3
0/0/580
0/0/
3
0/0/340
0/0/
4
0/0/250
0/0/
3
0/0/150
0/0/
3
0/0/-150
0/0/
3
0/0/-600
0/0/
3
0/0/-900
0/0/
2
0/0/-1050
0/0/
0/0/-1200
0/0/
0/0/-1450
0/0/
0/0/-2550
0/0/
0/0/-3650
0/0/
0/0/-3750
0/0/
0/0/-4000
0/0/
0/0/-4250
0/0/
0/0/-4450
0/0/
0/0/-4920
0/0/
0/0/-5450
0/0/
0/0/-5550
0/0/
0/0/-6050
0/0/
0/0/-6550
0/0/
0/0/-6650
0/0/
0/0/-7150
0/0/
0/0/-7650
0/0/
0/0/-8050
0/0/
0/0/-8450
0/0/

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.

Green J, Short N M, 1971. {Volcanic Landforms and Surface Features: a Photographic Atlas and Glossary}. New York: Springer-Verlag, 519 p

Japan Meteorological Agency, 1996. {National Catalogue of the Active Volcanoes in Japan (second edition)}. Tokyo: Japan Meteorological Agency, 502 p (in Japanese)

Kaneko T, Wooster M J, 2005. Satellite thermal analysis of the 1986 Izu-Oshima lava flows. {J Volc Geotherm Res}, 148: 355-371

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

Nakamura K, 1964. Volcano-stratigraphic study of Oshima volcano, Izu. {Bull Earthq Res Inst, Univ Tokyo}, 42: 649-728

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/

Oki Y, Aramaki S, Nakamura K, Hakamata K, 1978. {Volcanoes of Hakone, Izu and Oshima}. Hakone: Hakone Town Office, 59 p

Sano Y, Gamo T, Notsu K, Wakita H, 1995. Secular variations of carbon and helium isotopes at Izu-Oshima volcano, Japan. {J Volc Geotherm Res}, 64: 83-94

Sumner J M, 1998. Formation of clastogenic lava flows during fissure eruption and scoria cone collapse: the 1986 eruption of Izu-Oshima volcano, eastern Japan. {Bull Volc}, 60: 195-212

Yamamoto T, 2006. Pyroclastic density current from the caldera-forming eruption of Izu-Oshima volcano, Japan: restudy of the Sashikiji 2 member based on stratigraphy, lithofacies, and eruption age. {Bull Volc Soc Japan (Kazan)}, 51: 257-271 (in Japanese with English abs)



Oshima volcano in Sagami Bay, east of the Izu Peninsula, is the northernmost of the Izu Islands. The broad, low stratovolcano forms an 11 x 13 km island and was constructed over the remnants of three dissected stratovolcanoes. It is capped by a 4-km-wide caldera with a central cone, Mihara-yama, that has been the site of numerous historical eruptions. More than 40 parasitic cones are located within the caldera and along two parallel rift zones trending NNW-SSE. Although Oshima is a dominantly basaltic volcano, strong explosive activity has occurred at intervals of 100-150 years throughout the past few thousand years. Historical activity at Oshima dates back to the 7th century AD. A major eruption in 1986 produced spectacular lava fountains up to 1600 m height and a 16-km-high subplinian eruption column; more than 12,000 persons were evacuated from the island.