Volcano Alaid, Kuriles

Alaid exposes high potential hazard to the aircrafts flying over Kamchatka and the Northern Kuriles because its
eruptive clouds can rise to a height of 10-15 km above the crater and extend for hundreds of kilometers
(up to 1500 km) and the duration of eruptions can exeed a few months.

Ash falls possible at:
Severo-Kurilsk (45 km to the south-east from the volcano)
Ozernovsky (90 km to the north-east)
Ust’-Bolsheretsk (215 km to the north-north-east)
Petropavlovsk-Kamchatsky (310 km to the north-east)

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Alaid-vulkanen ligger på den nordligste av Kurillene, på 50.86°N, 155.55°Ø, like under
Kamchatka-halvøya. Toppen rager 2.339 m o h. Alaid er en symmetrisk stratovulkan når
man ser den fra nord, men har et 1,5km bredt hovedkrater som brer seg utover mot syd.
Siste kjente utbrudd var i 1996. Sterke eksplosive utbrudd har funnet sted fra hovedkrateret
siden begynnelsen av det 18. århundre. Rapporter utbrudd stammer fra hhv. 1770, 1789,
1821, 1829, 1843, 1848, og 1858. Eksplosive utbrudd i årene 1790 og 1981 var blant de
største som har funnet sted på Kurilene..

A dark cloud of ash raises above the Alaid volcano on April 30th, 1981
after an intense eruption which began on April 27th.
En mørk askeholdig sky reiser seg over Alaid-vulkanen den 30. april, 1981,
under det intense utbruddet som begynte den 27. april
Photo courtesy of Anatoli Khrenov, 1981 (Institute of Volcanology, Petropavlovsk).

Eruptive history:
1793 - an eruption from the summit crater
1854 - strong explosive eruption from the summit crater
1860 - eruption from the summit crater
1894 - eruption from the summit crater
1933-1934 - the initial flank eruption - Taketomi
1972 - the initial flank eruption - Olimpiysky
1981 - the strong explosive eruption from the summit crater with vulcanian, vulcano-strombolian
and subplinian types of activity
1986 - a small destruction of the 1981-year summit scoria cone