Sumbing

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 7.384°S
  • 110.07°E

  • 3371 m
    11057 ft

  • 263220
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

30 July-5 August 2008

Based on pilot observations, the Darwin VAAC reported that an eruption plume from Sumbing rose to an altitude of 4.9 km (16,000 ft) a.s.l. and drifted W. Ash was not identified on satellite imagery. [Correction: CVGHM later confirmed that Sumbing did not erupt on 1 August and attributed the plume origin to either a different volcano or a bushfire that was reported in the area.]

Source: Darwin Volcanic Ash Advisory Centre (VAAC)

Index of Weekly Reports


2008: July

Weekly Reports


30 July-5 August 2008

Based on pilot observations, the Darwin VAAC reported that an eruption plume from Sumbing rose to an altitude of 4.9 km (16,000 ft) a.s.l. and drifted W. Ash was not identified on satellite imagery. [Correction: CVGHM later confirmed that Sumbing did not erupt on 1 August and attributed the plume origin to either a different volcano or a bushfire that was reported in the area.]

Source: Darwin Volcanic Ash Advisory Centre (VAAC)


Index of Monthly Reports

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.

11/2008 (BGVN 33:11) False report of an eruption plume in August 2008


Contents of Monthly Reports

All information contained in these reports is preliminary and subject to change.

All times are local (= UTC + 7 hours)

11/2008 (BGVN 33:11) False report of an eruption plume in August 2008

The announcement of an eruption in the Smithsonian/USGS Weekly Volcanic Activity Report (30 July-5 August 2008) was later found to be false. The Darwin Volcanic Ash Advisory Center (VAAC) noted that a pilot reported an eruption plume from Sumbing on 1 August 2008. The plume allegedly rose to an altitude of 4.9 km and drifted W. However, ash was not identified on satellite imagery. Center of Volcanology and Geological Hazard Mitigation (CVGHM) observers at the local observatory saw only non-eruptive processes at the volcano, and they noted brush fires in September and October. A common problem in this active region occurs when drifting plumes become linked to the wrong volcano. After discussing the field observations, both Darwin VAAC and Indonesia's CVGHM concluded the report was in error. No thermal anomalies have been detected by the MODIS/MODVOLC satellite system for the volcano since 5 October 2006.

The area of Mt. Sumbing, close to Mt. Sundoro (also known as Sindoro) on Java (figure 1), was the subject of a recent study of people's perceptions and reactions to volcanic hazards (Lavignea and others, 2008). Note that there is another stratovolcano named Sumbing on Sumatra. In addition, one of the domes of Kelut (Java) is known as Sumbing.

Figure 1. Area around the twin active volcanoes of Sumbing and Sundoro. Note the nearby volcanological observatory at Gentingsari. The circles around the volcano summits represent radii of ~ 4 and 6 km from the summit. From Lavignea and others (2008).

Reference. Lavignea, F., De Costerb, B., Juvinb, N., Flohicb, F., Gaillardc, J-C., Texierd, P., Morine, J., and Sartohadif, J., 2008, People's behaviour in the face of volcanic hazards: Perspectives from Javanese communities, Indonesia: Journal of Volcanology and Geothermal Research, v. 172 (3-4), p. 273-287.

Information Contacts: Darwin Volcanic Ash Advisory Centre (VAAC), Bureau of Meteorology, Northern Territory Regional Office, PO Box 40050, Casuarina, NT 0811, Australia (URL: http://www.bom.gov.au/info/vaac/); Center of Volcanology and Geological Hazard Mitigation (CVGHM), Saut Simatupang, 57, Bandung 40122, Indonesia (URL: http://portal.vsi.esdm.go.id/joomla/).

Gunung Sumbing is a prominent 3371-m-high stratovolcano that lies across a 1400-m-high saddle from symmetrical Sundoro volcano in central Java. Prominent flank cones are located on the north and SE sides of Sumbing, which is somewhat more dissected than Sundoro volcano. An 800-m-wide horseshoe-shaped summit crater breached to the NE is partially filled by a lava dome that fed a lava flow down to 2400 m altitude. Emplacement of the dome followed the eruption of extensive pyroclastic flows down the NE flank. The only report of historical activity, in about 1730 CE, may have produced the small phreatic craters found at the summit.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1730 (?) 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
Soembing


Cones
Feature Name Feature Type Elevation Latitude Longitude
Beser Stratovolcano
Gianti Stratovolcano
The prominent stratovolcano Sumbing rises above rice fields to 3371 m immediately to the SE of Sundoro volcano. An 800-m-wide crater at the summit is breached to the NE, and flank cones are located on the north and SW sides. The only report of historical activity from Sumbing volcano was a phreatic explosion from the summit crater in 1730.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
Gunung Sumbing is seen here from the NNW, east of the saddle separating it from Sundoro volcano. Both conical stratovolcanoes rise above 3000 m. Sumbing volcano has been less active during historical time than Sundoro. During one of the more recent eruptions of Sumbing volcano, a lava dome was emplaced in the summit crater and a lava flow traveled down the NE flank.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
An aerial view from the NW looks across the summit crater complex of Gunung Sundoro volcano to Gunung Sumbing. These imposing 3000-m-high conical stratovolcanoes form prominent landmarks between the Dieng volcanic complex and the city of Yogjakarta. Both volcanoes have erupted in historical time.

Photo published in Taverne, 1926 "Vulkaanstudien op Java," (courtesy of Volcanological Survey of Indonesia).
A blocky lava dome fills the summit crater of Gunung Sumbing volcano. This view from the south shows the breached NE crater rim, through which a lava flow descended. The upper light-colored area on the left is a small pond, and the lower is a fumarolic area.

Photo published in Taverne, 1926 "Vulkaanstudien op Java," (courtesy of Volcanological Survey of Indonesia).
The two small peaks at the left are part of the Telomoyo volcanic complex, which was constructed along a NNW-SSE-trending line of volcanoes extending from Ungaran in the north to Merapi in the south. Telomoyo filled much of the southern side of a depression formed by collapse of the Pleistocene Soropati volcano and grew to a height of 600 m above its rim. The two towering conical peaks in the background are Sumbing (L) and Sundoro (R); Slamet volcano is on the far right horizon.

Photo by Hideko and Minoru Kusakabe, 2000 (Okayama University).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Neumann van Padang M, 1951. Indonesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 1: 1-271.

Sukhyar R, 1989. Geochemistry and petrogenesis of arc rocks from Dieng, Sundoro and Sumbing volcanic complexes, central Java, Indonesia. Unpublished PhD thesis, Monash University, 319 p.

Taverne N J M, 1926. Vulkanstudien op Java. Vulk Meded, 7: 1-132.

Volcano Types

Stratovolcano
Pyroclastic cone(s)

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Rock Types

Major
Andesite / Basaltic Andesite
Basalt / Picro-Basalt
Dacite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
15,294
310,361
2,425,607
25,707,858

Affiliated Databases

Large Eruptions of Sumbing 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).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.