Etorofu-Atosanupuri [Atosanupuri]

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  • Japan - administered by Russia
  • Kuril Islands
  • Stratovolcano
  • 1932 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 44.808°N
  • 147.131°E

  • 1206 m
    3956 ft

  • 290050
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Etorofu-Atosanupuri [Atosanupuri].

The Global Volcanism Program has no Weekly Reports available for Etorofu-Atosanupuri [Atosanupuri].

The Global Volcanism Program has no Bulletin Reports available for Etorofu-Atosanupuri [Atosanupuri].

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
290050

1932 CE

1206 m / 3956 ft

44.808°N
147.131°E

Volcano Types

Stratovolcano
Caldera

Rock Types

Major
Andesite / Basaltic Andesite
Basalt / Picro-Basalt

Tectonic Setting

Subduction zone
Intermediate crust (15-25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
1
289
644
4,311

Geological Summary

The conical Etorofu-Atsonupuri (also simply Atsonupuri) stratovolcano forms a prominent peninsula joined to the SW side of Iturup (Etorofu) Island by a low isthmus only 30 m high. A somma volcano whose caldera rim is exposed only at about 900 m elevation on the SE side was constructed during the late Pleistocene or early Holocene, forming an island up to about 1.5 km high that was later connected to the main island by erosional material. A fault with large displacement offsets the NW side of the somma. The 2-km-wide caldera was subsequently largely overtopped by a central cone that forms the present 1206-m-high summit. Strombolian eruptions have dominated the history of this basaltic volcano; few lava flows are exposed. Only two historical eruptions are known, during 1812 and 1932.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Gorshkov G S, 1958. Kurile Islands. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 7: 1-99.

Gorshkov G S, 1970. Volcanism and the Upper Mantle; Investigations in the Kurile Island Arc. New York: Plenum Publishing Corp, 385 p.

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.

Murayama I, 1987. Volcanoes of Japan (I). Tokyo: Daimedo, 315 p (2nd edition, in Japanese).

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/.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1932 Unknown Confirmed 2 Historical Observations
1812 Sep 5 ± 4 days Unknown Confirmed 1 Historical Observations

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.


Synonyms

Araisa | Atosa | Atosanupuri | Etorofu-Atosa-dake | Atosanobori

Cones

Feature Name Feature Type Elevation Latitude Longitude
Etorofu-Atosanupuri Stratovolcano

Photo Gallery


Atsonupuri stratovolcano forms a peninsula jutting into the Sea of Okhotsk. Seen here from the NE, it is joined to the southern end of Iturup Island by a low isthmus only 30 m high. A late-Pleistocene or early Holocene stratovolcano formed an island that was later connected to Iturup. A 2-km-wide caldera was overtopped by a central cone that forms the present 1206-m-high summit. Strombolian eruptions have dominated the history of this basaltic volcano.

Photo by A. Y. Antonov (courtesy of Oleg Volynets, Institute of Volcanology, Petropavlovsk).
Conical Atsonupuri stratovolcano, it summit dappled by light snowfall, is seen here from the SW. The volcano forms a prominent peninsula joined to the SW side of Iturup Island. A 2-km-wide caldera was subsequently largely overtopped by a central cone that forms the present 1206-m-high summit. Strombolian eruptions have dominated the history of this basaltic volcano, leaving slopes susceptible to slumping and erosion. Only two historical eruptions are known at Atsonupuri, during 1812 and 1932.

Photo by Alexander Rybin, 2001 (Institute of Marine Geology and Geophysics, Yuzhno-Sakhalin).

Smithsonian Sample Collections Database


A listing of samples from the Smithsonian collections will be available soon.

Affiliated Sites

Large Eruptions of Etorofu-Atosanupuri [Atosanupuri] Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.