Hargy

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 5.33°S
  • 151.1°E

  • 1148 m
    3765 ft

  • 252100
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: October 1990 (BGVN 15:10) Cite this Report


Weak fumarolic emissions

"Weak fumarolic emissions were noted from the SE side of the W summit crater during an overflight in early September. No unusual activity was observed."

Information Contacts: C. McKee and I. Itikarai, RVO.

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

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.

10/1990 (BGVN 15:10) Weak fumarolic emissions




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


October 1990 (BGVN 15:10) Cite this Report


Weak fumarolic emissions

"Weak fumarolic emissions were noted from the SE side of the W summit crater during an overflight in early September. No unusual activity was observed."

Information Contacts: C. McKee and I. Itikarai, RVO.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
252100

950 CE

1148 m / 3765 ft

5.33°S
151.1°E

Volcano Types

Stratovolcano
Caldera
Lava cone

Rock Types

Major
Dacite
Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
84
5,093
14,613
85,504

Geological Summary

This little-known volcano is one of several major calderas on the island of New Britain. The 10 x 12 km Hargy caldera, whose floor is 150 m above sea level, contains an inner caldera with a steep west-facing wall. A caldera lake on the SE side drains through a narrow gap in the northern caldera wall. The latest caldera-forming eruption of Hargy volcano took place about 11,000 years ago. The dacitic Galloseulo lava cone rises above and partially overtops the western rim of the caldera. A double crater occupies a larger 700-m-wide crater. Numerous small eruptions have taken place at Galloseulo over the past 7000 years, the last occurring about 1000 years ago.

References

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

Cooke R J S, Johnson R W, 1978. Volcanoes and volcanology in Papua New Guinea. Geol Surv Papua New Guinea Rpt, 78/2: 1-46.

Fisher N H, 1957. Melanesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 5: 1-105.

Johnson R W, 1971. Bamus volcano, Lake Hargy area, and Sulu Range, New Britain: volcanic geology and petrology. Aust Bur Min Resour Geol Geophys Rec, 1971/55: 1-36.

Lolok D, McKee C O, 1993. Eruption History, Stratigraphy and Petrology of the Pyroclastic Sequence at Hargy Volcano, Papua New Guinea. IAVCEI, 1993 Canberra Mtg Abs, p 63.

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0950 (?) Unknown Confirmed   Radiocarbon (uncorrected) Galloseulo
5050 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected) Galloseulo

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.


Cones

Feature Name Feature Type Elevation Latitude Longitude
Galloseulo
    Ibi
    Richthofen
    Eve
Stratovolcano 1148 m 5° 20' 0" S 151° 6' 0" E

Photo Gallery


Lake Hargy (lower right) lies in the SE corner of the 10 x 12 km wide Hargy caldera. The Lobu River drains the lake through a notch in the northern caldera rim. The post-caldera cone of Galloseulo lies beneath the large cloud bank in the center of the image, about half way from the lake to the Bismarck Sea. The Toiru River cuts across the bottom of the image. Small eruptions have taken place at Galloseulo over the past 7000 years, the last occurring about 1000 years ago.

NASA Landsat image, 2000 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).

Smithsonian Sample Collections Database


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

Affiliated Sites

Large Eruptions of Hargy 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.