Unnamed

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 46.47°N
  • 151.28°E

  • -502 m
    -1647 ft

  • 290160
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: May 1972 (CSLP 33-72)


Submarine eruption from unknown source detected acoustically

Card 1393 (19 May 1972) Submarine eruption from unknown source detected acoustically

"Seismic-type drum recordings of sound-power level at deep-ocean sound channel (SOFAR) hydrophones at Wake, Midway, and Oahu islands show a signal which I interpret to be from a shallow submarine eruption in the Kuril Islands, probably between Simushir Island and Urup Island. (The acoustic record is similar to that of the . . . Myojinsho eruption of 1970.) It began at 29 April 0830 UT and the major activity was over by 1930 UT although scattered events may have occurred for another day."

Information Contacts: Roger A. Norris, Hawaii Institute of Geophysics, University of Hawaii.

The Global Volcanism Program has no Weekly Reports available for Unnamed.

Bulletin Reports - Index


Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

05/1972 (CSLP 33-72) Submarine eruption from unknown source detected acoustically




Information is preliminary and subject to change. All times are local (unless otherwise noted)


May 1972 (CSLP 33-72)


Submarine eruption from unknown source detected acoustically

Card 1393 (19 May 1972) Submarine eruption from unknown source detected acoustically

"Seismic-type drum recordings of sound-power level at deep-ocean sound channel (SOFAR) hydrophones at Wake, Midway, and Oahu islands show a signal which I interpret to be from a shallow submarine eruption in the Kuril Islands, probably between Simushir Island and Urup Island. (The acoustic record is similar to that of the . . . Myojinsho eruption of 1970.) It began at 29 April 0830 UT and the major activity was over by 1930 UT although scattered events may have occurred for another day."

Information Contacts: Roger A. Norris, Hawaii Institute of Geophysics, University of Hawaii.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
290160

1972 CE

-502 m / -1647 ft

46.47°N
151.28°E

Volcano Types

Submarine

Rock Types

Major
No Data (checked)

Tectonic Setting

Subduction zone
Oceanic crust (< 15 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
578

Geological Summary

Hydrophones detected signals in 1972 interpreted to be from a submarine eruption in the Kuriles, probably between Simushir and Urup Island (Smithsonian Institution Center for Short-Lived Phenomena). Three seamounts have been located between Urup and Simushir Islands, east and NE of Chirpoi Island (Tsvetkov 1991, pers. comm.), but the hydrophone signal is not accurately enough located to determine its precise origin. The location given here is arbitrarily that of the seamount most centrally located between Urup and Simushir Islands.

References

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

Smithsonian Institution-CSLP, 1968-75. [Event notification cards]. Center for Short-Lived Phenomena (CSLP) Event Cards.

Tsvetkov A, 1991. (pers. comm.).

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1972 Apr 29 1972 Apr 30 Confirmed 0 Hydrophonic

The Global Volcanism Program has no synonyms or subfeatures listed for Unnamed.

The Global Volcanism Program has no photographs available for Unnamed.

Smithsonian Sample Collections Database


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

Affiliated Sites

Large Eruptions of Unnamed 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.