Kiska Volcán

Erupciones del volcán Kiska: 1990
Latest nearby earthquakes
Fecha y hora | Mag / Prof. | Distancia / Ubicación |
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Background
Conical Kiska volcano is the westernmost historically active volcano of the 2500-km-long Aleutian arc. The volcano lies at the northern tip of the elongated Kiska Island, across a low isthmus containing East Kiska and West Kiska lakes. A 400-m-wide elliptical crater, breached to the north, caps the 1220-m-high stratovolcano. The volcano is surrounded on three sides by sea cliffs up to 450 m high and overlies an older volcanic center exposed to the south. A massive submarine debris-avalanche deposit extends 40 km to the NNW. The southern part of the NE-SW-trending island, the westernmost of the Rat Island group, has been glaciated, but all lava flows on Kiska volcano post-date the last major glaciation. Young, steep-sided blocky lava flows, primarily on the northern and SW flanks, have originated from vents at locations ranging from the summit to near sea level. A flank cinder cone and associated lava flows were erupted in 1962 at Sirius Point on the northern coast. The island contains one of the best harbors in the Aleutian Islands, but is uninhabited.---
Smithsonian / GVP volcano information
Erupciones volcánicas significativas: Kiska volcano
Fecha | Nota | VEI | Fallecidos | Daños | |
---|---|---|---|---|---|
Upper NW? flank Obs. históricas/documentos | 2 | desconocido | |||
?? | Erupción incierta | ? | desconocido | ||
Obs. históricas/documentos | 2? | desconocido | |||
Obs. históricas/documentos | 0 | desconocido | |||
North flank (Sirius Point) Obs. históricas/documentos | 3 | desconocido | |||
?? | Erupción incierta | 2? | desconocido | ||
?? | Erupción incierta | 2? | desconocido |
Kiska Volcano FAQ
+When was the last eruption of Kiska volcano?
The last confirmed eruption of Kiska occurred in 1990.
+How often does Kiska volcano erupt?
There are no known historic eruptions, but evidence from geologic records shows that it has had at least 4 eruptions over the past 10,000 years. This number is likely much higher because many past eruptions might not have left evidence recognizeable today and/or the volcano might not have been studied in too much detail. Using the available data, a very conservative estimate is that Kiska volcano erupts every 2,500 years.
+How active is Kiska volcano at present?
Kiska volcano is occasionally active: Since 1900, it has had 4 eruptions, and been active during 4 years out of 126 as of now. This means, Kiska has been in eruption one in 31.5 years on average. The last eruption was in 1990 and ended 35 years ago.
+When was the largest eruption of Kiska volcano?
The largest eruption of Kiska volcano in historic times occurred in 1962. It ranks as a "vulcanian" eruption with a magnitude 3 on the VEI (Volcanic Explosivity Index) scale.
Últimas imágenes satelitales
Kiska Volcán Mapas





















