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Asunción

Photo of this volcano
  • Country
  • Primary Volcano Type
  • Last Known Eruption
  •  
  • 19.671°N
  • 145.406°E

  • 857 m
    2812 ft

  • 284150
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: June 1992 (BGVN 17:06) Citation IconCite this Report

Strong steaming

A six-member team of USGS volcanologists visited the Commonwealth of the Northern Mariana Islands 11-27 May 1992 at the request of the CNMI Office of Civil Defense. Vigorous steaming was occurring from several locations in the summit crater [of Asuncion] during observations from a helicopter on 18 May.

Information Contacts: R. Moore, USGS; R. Koyanagi, M. Sako, and F. Trusdell, HVO.

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

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.

6/1992 (BGVN 17:06) Strong steaming




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


June 1992 (BGVN 17:06) Citation IconCite this Report

Strong steaming

A six-member team of USGS volcanologists visited the Commonwealth of the Northern Mariana Islands 11-27 May 1992 at the request of the CNMI Office of Civil Defense. Vigorous steaming was occurring from several locations in the summit crater [of Asuncion] during observations from a helicopter on 18 May.

Information Contacts: R. Moore, USGS; R. Koyanagi, M. Sako, and F. Trusdell, HVO.

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.

Eruptive History

There is data available for 1 confirmed Holocene eruptive periods.

[ 1924 ] Uncertain Eruption

Episode 1 | Eruption Episode
1924 - Unknown Evidence from Unknown

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Pyroclastic flow Uncertain
   - - - -    - - - - Lahar or Mudflow Uncertain
1924    - - - - VEI (Explosivity Index)

1906 Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode Upper SE and W flanks
1906 - Unknown Evidence from Observations: Reported
 An eruption in 1906 was described as beginning with an explosive phase and concluding with the efussion of several lava flows. Fresh-looking lava flows from vents on the upper SE and W flanks are considered to have probably originated from this eruption (Corwin, 1971).

List of 4 Events for Episode 1 at Upper SE and W flanks

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Lava flow
   - - - -    - - - - Ash
1906    - - - - VEI (Explosivity Index)

[ 1901 ] Discredited Eruption

An eruption listed for 1901 in the CAVW refers to a description of steaming within crevices by Frite, and was not an eruptive event (Corwin, 1971).

[ 1819 ] Discredited Eruption

An eruption in 1819 listed in the CAVW corresponds to the date of French explorer Freycinet's visit to Sarigan, Guguan, and Alamagan. Freycinet did not visit Asuncion and makes only a general statement about activity continuing on Pagan and Asuncion, which does not constitute a valid report of an event as it appears to be based on books or sailing directions (Corwin, 1971).

[ 1786 ] Discredited Eruption

French explorer Lapérouse suggested a recent eruption prior to a 14 December 1786 visit on the basis of fresh ash on the upper parts of the cone and sulfurous odors to the lee of the island, but Corwin (1971) sets a tentative date of 1775 ± 10 CE for this eruption.

[ 1775 ± 10 years ] Uncertain Eruption

Episode 1 | Eruption Episode
1775 ± 10 years - Unknown Evidence from Unknown
 A tentative date of 1775 ± 10 CE was assigned by Corwin (1971) to an eruption postulated by the French explorer Lapérouse prior to his 1786 visit.

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain
1775 ± 10 years    - - - - VEI (Explosivity Index)

[ 1690 ± 10 years ] Uncertain Eruption

Episode 1 | Eruption Episode
1690 ± 10 years - Unknown Evidence from Unknown
 Either an eruption or intense fumarolic activity occurred near the end of the 17th century (Corwin, 1971).
Deformation History

There is no Deformation History data available for Asunción.

Emission History

There is no Emissions History data available for Asunción.

GVP Map Holdings

The Global Volcanism Program has no maps available for Asunción.

Smithsonian Sample Collections Database

There are no samples for Asunción in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites