Ale Bagu

Photo of this volcano
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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 13.52°N
  • 40.63°E

  • 1031 m
    3382 ft

  • 221090
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Ale Bagu.

The Global Volcanism Program has no Weekly Reports available for Ale Bagu.

The Global Volcanism Program has no Bulletin Reports available for Ale Bagu.

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude
221090

Unknown - Evidence Credible

1031 m / 3382 ft

13.52°N
40.63°E

Volcano Types

Stratovolcano

Rock Types

Major
Basalt / Picro-Basalt
Trachyte / Trachyandesite
Rhyolite

Tectonic Setting

Rift zone
Intermediate crust (15-25 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
2
919
8,424
278,270

Geological Summary

Ale Bagu, also known as Ummuna, is an elongated, 1031-m-high stratovolcano located SW of Erta Ale volcano. It is the highest of the Erta Ale Range volcanoes and is located west of the axis of the range. In contrast to other volcanoes of the Erta Ale Range, it is mantled by basaltic pyroclastic rocks. Summit craters are elongated along a NNW-SSE trend. The main crater is a steep-walled, 750 x 450 m depression occupied by a steep-sided lava cone that has fed trachytic lava flows over the crater floor. Silicic lavas from the axial regional fissure extend to the NW and SE.

References

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

Barberi F, Varet J, 1970. The Erta Ale volcanic range (Danakill depression, Northern Afar, Ethiopia). Bull Volc, 34: 848-917.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Richard J J, Neumann van Padang M, 1957. Africa and the Red Sea. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI 4: 1-118.

WoldeGabriel G, 1987. (pers. comm.).

Wood C A, 1978. (pers. comm.).

The Global Volcanism Program is not aware of any Holocene eruptions from Ale Bagu. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Ale Bagu page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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

Ummuna | Alebbagu | Amaytoli

Cones

Feature Name Feature Type Elevation Latitude Longitude
Ale Bagu Stratovolcano

Photo Gallery


Ale Bagu, also known as Ummuna, is an elongated, 1031-m-high stratovolcano (left center) located SW of Erta Ale, the volcano at the top-center showing a small orange-colored lava lake. In contrast to other volcanoes of the Erta Ale Range, Ale Bagu is mantled by basaltic pyroclastic rocks. The main crater is a steep-walled, 750 x 450 m depression; trachytic lava flows occupy the crater floor, and silicic lavas from the axial regional fissure extend to the NW and SE. Lake Giulietti (also known as Lake Afrera) is at the lower right.

NASA Landsat image, 1999 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).
The prominent peak near the center of this NASA Landsat image (with north to the top) is Ale Bagu, also known as Ummuna. This elongated, 1031-m-high stratovolcano is the highest of the Erta Ale Range volcanoes, and unlike other volcanoes in the massif, is mantled by basaltic pyroclastic rocks. The main crater is a steep-walled, 750 x 450 m depression prominent in this image. The light-colored Roram Plain lies at the lower left, and lava flows from Hayli Gubbi volcano are visible at the right.

NASA Landsat7 image (worldwind.arc.nasa.gov)

Smithsonian Sample Collections Database


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

Affiliated Sites

Large Eruptions of Ale Bagu 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.