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Ebulobo

Photo of this volcano
  • Country
  • Volcanic Region
  • Landform | Volc Type
  • Last Known Eruption
  • 8.817°S
  • 121.191°E

  • 2,096 m
    6,877 ft

  • 264100
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Weekly Report: 8 March-14 March 2017 Citation IconCite this Report

Based on PVMBG observations, the Darwin VAAC reported that on 12 March an ash plume from Ebulobo rose to an altitude of 3 km (10,000 ft) a.s.l. (800 m above the summit) and drifted W.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)


Most Recent Bulletin Report: November 2013 (BGVN 38:11) Citation IconCite this Report

August 2013–glowing areas and hot plumes

Our last report (CSLP 19-69) discussed a summit eruption at Ebulobo stratovolcano, near the S coast of Central Flores island, that in 1969 had emitted ash and steam as well as "fire" (generally taken as incandescence but also possibly flames). CVGHM (Center for Volcanology and Mitigation of Geologic Disasters), issued a report on Ebulobo on 26 August 2013 informing readers that during August 2013, observers noted one or more hot emissions escaping from the crater. The resulting plume was of sparse consistency, white in color, under weak pressure, and it rose to 5-30 m above the peak. "Smoke" was noted.

The CVGHM report noted that on the night of 21 August 2013, observers on the volcano's N side saw incandescence at the summit area. Observations during the night of 22-23 August revealed points of glowing remained unchanged. The glowing was considered anomalous, having not been seen since 2011. The exact cause of the incandescent regions was not reported No new fissures, lava flows or pyroclastic flows were reported. The glowing later terminated as discussed in an October follow up report.

During June 2013, the system recorded the earthquakes shown in table 1.

Table 1. A summary of seismicity recorded at Ebulobo. Dashes signify cases without reported data. Extracted from the 26 August and 17 October CVGHM reports.

Month (2013) Shallow (VB) Deep volcanic (VA) Low-frequency (long period) Local tectonic (TL) Long distance (TJ)
June -- 12 1 18 47
July -- 19 1 18 38
August -- 57 -- 45 60
September 2 62 -- 27 67
1-16(?) October 2 13 7 7 35

During 1-22 August 2013, the seismic system also recorded tremor with maximum amplitudes in the range of 0.5-15 mm.

Ebulobo (figure 1) has a dedicated observation post and two seismic instruments as discussed further below.

Figure (see Caption) Figure 1. Ebulobo as seen in a photo taken 9 June 2009. Copyrighted photo by Andrzej-Muda.

Glow diminishes and Alert Level drops (to I). During September-October white plumes rose as high as 100 m above the crater. Despite that, the glowing area had remained absent after 27 August. On 17 October CVGHM scaled back the Alert from II to I (Normal, on a scale that reaches IV).

More background. The following was extracted from CVGHM reporting.

"Ebulobo Volcano is located in the district of Nagekeo, province of Nusa Tenggara Timur. Eruptions of Ebulobo generally have consisted of lava streams that quickly formed mounds but have never so far resulted in sudden eruptive outbursts that produced a symmetrically shaped mass to the volcano. Ebulobo's eruptions have occurred between 3 and 58 years. In its historical record, its latest eruptive activity took place in 1941 and consisted of a lava stream.

"Observation of Ebulobo's activity is carried out from its monitoring post in the village of Ekowolo, sub-district of Boa Wae and is done visually and according to tremor events. The monitoring is done by means of a Type VR-60 seismograph and a Type L4C seismometer. The readings are transmitted by a telemetric system."

Information Contacts: Center for Volcanology and Mitigation of Geologic Disasters (CVGHM), Jalan Diponegoro 57, Bandung 40122, Indonesia (URL: http://www.vsi.esdm.go.id/); and theNational Agency for Disaster Management (BNPB), Gedung Graha 55 Jl. Tanah Abang II No. 57 Postal Code: 10120, Jakarta Pusat, Indonesia (URL: http://www.bnpb.go.id/).

Weekly Reports - Index


2017: March
2013: August


8 March-14 March 2017 Citation IconCite this Report

Based on PVMBG observations, the Darwin VAAC reported that on 12 March an ash plume from Ebulobo rose to an altitude of 3 km (10,000 ft) a.s.l. (800 m above the summit) and drifted W.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)


21 August-27 August 2013 Citation IconCite this Report

CVGHM reported that observers at Ebulobo's observation post in Ekowolo (Boa Wae District) noted that during August white plumes rose as high as 30 m. Volcanic tremor was detected starting on 10 August. At night during 21-23 August incandescence was visible on the N side of the summit (incandescence was last observed in 2011). The Alert Level was raised to 2 (on a scale of 0-4) on 23 August. Residents and tourists were not permitted within a 1.5-km-radius of the crater.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)


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.

02/1969 (CSLP 19-69) Summit eruption with "fire and steam" and ash

11/2013 (BGVN 38:11) August 2013–glowing areas and hot plumes




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


February 1969 (CSLP 19-69)

Summit eruption with "fire and steam" and ash

Card 0432 (28 February 1969) Summit eruption with "fire and steam" and ash

"Mount Ebu Lobo . . . has begun activity, with fire and steam on summit and ash eruption."

Information Contacts: Djajadi Volcanological Service via the American Embassy, Djarkata, Indonesia.


November 2013 (BGVN 38:11) Citation IconCite this Report

August 2013–glowing areas and hot plumes

Our last report (CSLP 19-69) discussed a summit eruption at Ebulobo stratovolcano, near the S coast of Central Flores island, that in 1969 had emitted ash and steam as well as "fire" (generally taken as incandescence but also possibly flames). CVGHM (Center for Volcanology and Mitigation of Geologic Disasters), issued a report on Ebulobo on 26 August 2013 informing readers that during August 2013, observers noted one or more hot emissions escaping from the crater. The resulting plume was of sparse consistency, white in color, under weak pressure, and it rose to 5-30 m above the peak. "Smoke" was noted.

The CVGHM report noted that on the night of 21 August 2013, observers on the volcano's N side saw incandescence at the summit area. Observations during the night of 22-23 August revealed points of glowing remained unchanged. The glowing was considered anomalous, having not been seen since 2011. The exact cause of the incandescent regions was not reported No new fissures, lava flows or pyroclastic flows were reported. The glowing later terminated as discussed in an October follow up report.

During June 2013, the system recorded the earthquakes shown in table 1.

Table 1. A summary of seismicity recorded at Ebulobo. Dashes signify cases without reported data. Extracted from the 26 August and 17 October CVGHM reports.

Month (2013) Shallow (VB) Deep volcanic (VA) Low-frequency (long period) Local tectonic (TL) Long distance (TJ)
June -- 12 1 18 47
July -- 19 1 18 38
August -- 57 -- 45 60
September 2 62 -- 27 67
1-16(?) October 2 13 7 7 35

During 1-22 August 2013, the seismic system also recorded tremor with maximum amplitudes in the range of 0.5-15 mm.

Ebulobo (figure 1) has a dedicated observation post and two seismic instruments as discussed further below.

Figure (see Caption) Figure 1. Ebulobo as seen in a photo taken 9 June 2009. Copyrighted photo by Andrzej-Muda.

Glow diminishes and Alert Level drops (to I). During September-October white plumes rose as high as 100 m above the crater. Despite that, the glowing area had remained absent after 27 August. On 17 October CVGHM scaled back the Alert from II to I (Normal, on a scale that reaches IV).

More background. The following was extracted from CVGHM reporting.

"Ebulobo Volcano is located in the district of Nagekeo, province of Nusa Tenggara Timur. Eruptions of Ebulobo generally have consisted of lava streams that quickly formed mounds but have never so far resulted in sudden eruptive outbursts that produced a symmetrically shaped mass to the volcano. Ebulobo's eruptions have occurred between 3 and 58 years. In its historical record, its latest eruptive activity took place in 1941 and consisted of a lava stream.

"Observation of Ebulobo's activity is carried out from its monitoring post in the village of Ekowolo, sub-district of Boa Wae and is done visually and according to tremor events. The monitoring is done by means of a Type VR-60 seismograph and a Type L4C seismometer. The readings are transmitted by a telemetric system."

Information Contacts: Center for Volcanology and Mitigation of Geologic Disasters (CVGHM), Jalan Diponegoro 57, Bandung 40122, Indonesia (URL: http://www.vsi.esdm.go.id/); and theNational Agency for Disaster Management (BNPB), Gedung Graha 55 Jl. Tanah Abang II No. 57 Postal Code: 10120, Jakarta Pusat, Indonesia (URL: http://www.bnpb.go.id/).

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 7 confirmed Holocene eruptive periods.

[ 2017 Mar 12 - 2017 Mar 12 ] Uncertain Eruption

Episode 1 | Uncertain
2017 Mar 12 - 2017 Mar 12 Evidence from Observations: Reported

1969 Feb 27 Confirmed Eruption VEI: 2 (?)

Episode 1 | Eruption
1969 Feb 27 - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Ash
1969 Feb 27    - - - - VEI (Explosivity Index)

1941 Aug 23 ± 8 days Confirmed Eruption VEI: 0 (?)

Episode 1 | Eruption
1941 Aug 23 ± 8 days - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Lava flow
1941 Aug 23 ± 8 days    - - - - VEI (Explosivity Index)

1938 May - 1938 Jun Confirmed Eruption  

Episode 1 | Eruption
1938 May - 1938 Jun Evidence from Observations: Reported

1924 Nov Confirmed Eruption VEI: 2

Episode 1 | Eruption
1924 Nov - Unknown Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Pyroclastic flow
1924 Nov    - - - - VEI (Explosivity Index)

1910 Apr 10 Confirmed Eruption VEI: 2

Episode 1 | Eruption
1910 Apr 10 - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
1910 Apr 10    - - - - VEI (Explosivity Index)

1888 Confirmed Eruption VEI: 2

Episode 1 | Eruption
1888 - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
1888    - - - - VEI (Explosivity Index)

1830 Confirmed Eruption VEI: 2

Episode 1 | Eruption
1830 - Unknown Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Lava flow
1830    - - - - VEI (Explosivity Index)
Deformation History

There is no Deformation History data available for Ebulobo.

Emission History

There is no Emissions History data available for Ebulobo.

GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

Smithsonian Sample Collections Database

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

External Sites