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Donnerstag, Aug 23, 2007
A large sulfur dioxide plume and several thermal anomalies from Manda Hararo were detected in satellite imagery on 13 August. On 16 August, a field team conducted aerial and ground observations of a locality known as Karbahi, a graben area with numerous active faults, fissures, and basalt flows, NW of the center of Manda Hararo. Observations revealed active volcanism, including isolated areas of intense gas emission and visible sulfur deposits. Basaltic lava flowed from long fissures, predominantly to the W of the graben floor. Each fissure was covered by a continuous row of small and closely spaced spatter and scoria cones 2-10 m high. Spatter and scoria deposits ranged in size from coarse lapilli to bombs. Incandescence and occasionally small flames were emitted from the tops of some of the cones. ... [mehr]
 

Manda Hararo Vulkan

Complex of shield volcanoes 600 m (1,968 ft)
Äthiopien, 12.17°N / 40.82°E
Aktueller Status: normal / ruhend (1 von 5) | Berichte
Manda Hararo Vulkan-B cher
Last update: 22 Dez 2011
Typische Aktivität: Effusive fissure eruptions
Ausbrüche des Manda Hararo: Aug 2007 No recent earthquakes
UhrzeitMag. / TiefeDistanceOrt

Beschreibung:

Manda Hararo complex is located on the southernmost axial range of the western Afar triangle, inside the Kalo plain, SSE of Dabbahu volcano. The first historic eruption witnessed at this volcano took place in August 2007, when a series of cracks opened in the ground, some of which erupted basaltic lava flows. The activity was accompanied by an intense seismic activity and many signs of ground deformation typical of rift spreading zones. The massive complex is 105 km long and 20-30 km wide, and represents an uplifted segment of a mid-ocean ridge spreading center. A small basaltic shield volcano is located at the northern end of the complex, south of which is an area of abundant fissure-fed lava flows. Two basaltic shield volcanoes, the largest of which is Unda Hararo, occupy the center of the complex. The dominant part of the complex lies to the south, where the Gumatmali-Gablaytu fissure system is located. Voluminous fluid lava flows issued from these NNW-trending fissures, and solidified lava lakes occupy two large craters. The small Gablaytu shield volcano forms the SE-most end of the Manda Hararo complex. Lava flows from Gablaytu and from Manda overlie 8000-year-old sediments. Hot springs and fumaroles occur around Daorre lake.

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Source: adapted from GVP, Manda Hararo information


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