Eruption of Karthala Volcano

Eruption of Karthala Volcano
  • Credit:

    Jeff Schmaltz

The air around Grand Comore Island is thick with gases and particles from the eruption of the Karthala Volcano. The island is located in the Western Indian Ocean, Northwest of Madagascar and East of the coastlines of Tanzania and Mozambique. It is a part of the Union of the Comoros, an independent nation that consists of a group of 3 islands that are formerly colonies of France; a 4th island remains a territory of France but is also claimed by the Union. The volcano is a shield type volcano, named after its broad, gently sloping sides; Mauna Lau in Hawaii is a familiar example. Karthala is very active and has erupted at least 20 times since the early 1800´s. The image seen here was acquired on November 25, 2005, one day after the eruption began. This is the second eruption by Karthala this year; it spewed volcanic ash and debris during April of 2005. No casualties have been reported (and confirmed) to date; early reports of several deaths appear to have been made in error. However, in addition to causing villagers to flee, the eruptions can contaminate the local water supply as well as disrupt the local food supply: crops and livestock typically cannot be evacuated.

Images & Animations


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  • Data Date:

    November 25, 2005
  • Visualization Date:

    January 5, 2005
  • Sensor(s):

    Terra - MODIS
NASA - National Aeronautics and Space Administration