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Alaid Volcano, Russia
A dark, ash-rich eruption column rises above Alaid volcano on April 30, 1981, at the peak of an eruption that began on April 27.
The eruption plume extended 2000 km to the SE.
The highest and northernmost volcano of the Kuril Islands, 2339-m-high Alaid is a symmetrical stratovolcano when viewed from the north, but has a 1.5-km-wide summit crater that is breached to the south.
Numerous pyroclastic cones dot the lower flanks of Alaid.
Explosive eruptions in 1790 and 1981 were among the largest in the Kuril Islands.
The highest and northernmost volcano of the Kuril Islands, 2339-m-high Alaid is a symmetrical stratovolcano when viewed from the north, but has a 1.5-km-wide summit crater that is breached widely to the south.
Alaid is the northernmost of a chain of volcanoes constructed west of the main Kuril archipelago and rises 3000 m from the floor of the Sea of Okhotsk.
Numerous pyroclastic cones dot the lower flanks of basaltic to basaltic-andesite Alaid volcano, particularly on the NW and SE sides, including an offshore cone formed during the 1933-34 eruption.
Strong explosive eruptions have occurred from the summit crater beginning in the 18th century.
Reports of eruptions in 1770, 1789, 1821, 1829, 1843, 1848, and 1858 were considered incorrect by Gorshkov (1970).
Explosive eruptions at Alaid in 1790 and 1981 were among the largest in the Kuril Islands during historical time.
PHOTO SOURCE: courtesy of Anatoli Khrenov, 1981 (Institute of Volcanology, Petropavlovsk), courtesy of the Global Volcanism Program, Smithsonian National Museum of Natural History, used with permission.
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