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Chikurachki Vulkan Ausbrüche

Schichtvulkan 1816 m / 5,958 ft
Paramushir Island, Kurilen, 50.33°N / 155.46°E
Eruption-Liste: 2008, 2007, 2005, 2003, 2002, 1986, 1973, 1964, 1961, 1958, 1853-59


2008 eruption
Chikurachki had a series of ash eruptions in the summer of 2008. The strongest was probably on 29 July 2008, when the Tokyo VAAC reported an ash plume reaching 20,000 ft (6.1 km) altitude. The ash plume drifted 30 km WSW.

2007 eruptions
Small to moderate ash emissions reaching 10,000 ft elevation occurred at the volcano in August 2007. Ash plumes were visible on satellite images extending up to 300 km NE of the volcano on 28-30 August (VAAC Tokyo).

2005 eruption
On 1 March 2005, observers in Severo-Kurilsk (70 km NE of Chikurachki) observed an ash plume rising 400 m above the volcano. On 23 March, satellite imagery showed a ash plume drifting 70 km E of the volcano (USGS / GVP weekly reports).

2003 eruption
Ash emissions from Chikurachki were detected on satellite images on 18 April 2003. The origin was a powerful vulcanian eruption with at least 3 pulses. Ash clouds reached a maximum of 25,000 ft altitude (ca. 8 km), and extended south to a maximum 250 km (155 mi) or more. Eruptive activity continued at smaller levels until around 16 June 2003.
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Source:
Robert G. McGimsey, Christina A. Neal, and Olga Girina (2005) "2003 Volcanic Activity in Alaska and Kamchatka: Summary of Events and Response of the Alaska Volcano Observatory", USGS Open-File Report 2005-1310

2002 eruption
A new series of eruptions began at Chikurachki on 25 January 2002. Explosions formed a small new crater on the SSE part of the summit crater. Eruptions continued until around 16 March 2002, when ash fell in Podgorny settlement, 20 km SE of the volcano. According to a report from the town of Severo-Kurilsk, a hunter observed a permanent ash column to a height of 2500m (8200 feet) ASL accompanied by thunder on 7 February.
Source: GVP monthly reports

1986 basaltic plinian eruption
On 19 November 1986 a new powerful summit eruption began at Chikurachki volcano. The eruption started with small explosions ejecting dark ash, increasing to an eruption column of 1 km height within 30 minutes. The eruption column increased further to 3 km and a 20-m-thick lava flow was erupted. 3 pyroclastic flows moved down the SE flank. Satellite images showed a plume extending roughly 350 km to the ENE at 23h00 local time.
The eruption peaked on 20-21 November accompanied by strong felt earthquakes and volcanic lightning. The ash column reached a maximum of 10-11 km height and an ash plume was seen on satellite imagery extending up to 500 km to the E. 2 lava flows descended to 560 m altitude.
After midnight on 21 November explosions began to decrease. A lava flow began on the southeastern flank of the volcano and advanced 3 km in 5 days, its thickness at the front being 35-40 m. On 1 December explosions ceased in the crater.
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Sources:
GVP monthly reports
Ovsyannikov A A, Muraviev Y D, 1992. The 1986 eruption of Chikurachki volcano. Volc Seism, 1992(5-6): 3-20 (English tranlation 1993, 14: 493-514)

1853 basaltic Plinian eruption
The eruption of Chikurachki in 1853 was one of the biggest knwon at the volcano. It was one of the basaltic Plinian eruptions. Its ash deposits contained a minimum volume of 0.07 cubic km, and covered an elliptical area with the axis towards NE. Maximum thickness of the deposit was 4.2 m. The calculated maximum height of eruption column was 14 km.
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Source:
A.A. Gurenko et al. (2005) "Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-eruptive magmatic conditions and volatile budget revealed from phenocryst-hosted melt inclusions and groundmass glasses", Journal of Volcanology and Geothermal Research 147, pp 203–232

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