Unnamed

No photo available for this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 21.38°S
  • 175.65°W

  • -500 m
    -1640 ft

  • 243010
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Unnamed.

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

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

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
243010

1932 CE

-500 m / -1640 ft

21.38°S
175.65°W

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
88,771

Geological Summary

During an eruption in 1907 from an unnamed submarine volcano pyroclastic material was ejected to 100 m above the sea surface, and pumice rafts were produced. The eruption was approximately located (on Admiralty Chart 2421) at a point 48 km SW of Tongatapu Island, along the Tofua volcanic arc. Tongatapu is located at the southern end of a chain of coral islands paralleling the Tofua volcanic arc on its eastern side. The reported location of the 1907 eruption corresponds to sloping terrain at 1800 m depth on a 1982 bathymetric map, but a seamount of about 500 m depth is located about 10 km to the NE. A second eruption from this area was reported in late 1932.

References

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

Richard J J, 1962. Kermadec, Tonga and Samoa. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 13: 1-38.

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 Dec 1 ± 30 days Unknown Confirmed 0 Historical Observations
1907 Jul Unknown Confirmed 0 Historical Observations

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.