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Alaid

Volcano
Space image of Alaid stratovolcano (NASA Earth Observatory http://earthobservatory.nasa.gov/IOTD/view.php?id=78290)
Space image of Alaid stratovolcano (NASA Earth Observatory earthobservatory.nasa.gov/IOTD/view.php)
Alaid is the tallest and northernmost volcano in the Kurile Islands. Also called Atlasov as the island it forms, the symmetrical stratovolcano rises 3000 m from the sea floor and forms a small island. It has a 1.5-km-wide summit crater breached to the south. It is one of the Kuriles' most active volcanoes. Large explosive eruptions occurred in 1790 and 1981, and were among the largest in the Kuriles in historic times.
Volcano typestratovolcano normal or dormant
LocationRussland
Summit elevation2339 m / 7,674 ft
Alaid volcano eruptions2016 (Mar-May), 2015-16 (Oct-Jan), 2012, 1997, 1996, 1986, 1982, 1981, 1972, 1933-34, 1894, 1860, 1854, 1790-93
Typical eruption styleexplosive
Numerous flank cones dot the lower flanks of the basaltic to basaltic-andesite Alaid volcano, particularly on the NW and SE sides, including an offshore cone formed during the 1933-34 eruption.

Alaid has 2 types of eruptions: summit activity from the central crater as well as lateral eruptions. The eruptions from the central crater tend to be more explosive and are more dangerous. The largest eruptions from the central crater were in February 1793, June 1854, July 1860, 1894, and April 1981.

The principal volcanic hazard from Alaid are ash plumes dangerous for aircraft (many routes from N-America to Asia pass nearby).
 

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