Karthala volcano

Shield volcano 2361 m (7,746 ft)
Comores, western Indian Ocean, -11.77°S / 43.36°E
Current status: normal or dormant (1 out of 5)
Last update: 24 Feb 2020 (unknown, probably quiet)
Karthala with the lava lake in the summit crater (2006 eruption)
Karthala with the lava lake in the summit crater (2006 eruption)

Karthala is a large shield volcano with a summit caldera on La Grande Island of the Comores in the western Indian Ocean. It erupts every few years and often produces voluminous lava flows and sometimes has a lava lake in the crater of the caldera.

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Typical eruption style: Effusive. Temporary lava lakes.
Karthala volcano eruptions: 1808, 1814, 1821, 1828, 1830, 1833, 1848, 1850, 1855, 1857, 1858, 1859, 1860, 1862(?), 1872, 1876, 1880, 1883-84, 1904, 1910, 1918, 1928, 1948, 1952, 1956, 1965, 1972, 1977, 1991, 2005, 2005, 2006

No recent earthquakes
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Background

Karthala, a typical and very active shield volcano, forms the southern part of the Comores island La Grande Comore (also known as Ngazidja Island). It erupted twice in 2005 and caused major problems due to extensive ash fall and contamination of drinking water.

Karthala has an elongated 3 x 4 km summit caldera created by repeated collapse, and has elongated rift zones extend to the NNW and SE from the summit. Historical eruptions both from summit and flank vents have repeatedly modified the shape of the caldera. Many lava flows have reached the sea on both sides of the island. A lava flow during the euption in 1860 traveled from the summit caldera about 13 km to the NW, reached the sea at the western coast north of the capital city of Moroni.

Karthala Photos

Karthala Princess of Sleep (Photo: MMSAsela)
Karthala Princess of Sleep (Photo: MMSAsela)
 



See also: Sentinel hub | Landsat 8
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Background:

Updated: Sep 27, 2021 00:41 GMT

Karthala, a typical and very active shield volcano, forms the southern part of the Comores island La Grande Comore (also known as Ngazidja Island). It erupted twice in 2005 and caused major problems due to extensive ash fall and contamination of drinking water.


Karthala has an elongated 3 x 4 km summit caldera created by repeated collapse, and has elongated rift zones extend to the NNW and SE from the summit. Historical eruptions both from summit and flank vents have repeatedly modified the shape of the caldera. Many lava flows have reached the sea on both sides of the island. A lava flow during the euption in 1860 traveled from the summit caldera about 13 km to the NW, reached the sea at the western coast north of the capital city of Moroni.


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