What is Kamchatka Earthquakes?

Information about Kamchatka Earthquakes

The Kamchatka earthquakes were a pair of megathrust earthquakes occurring off the coast of the Kamchatka Peninsula, in Russia on October 16, 1737, and on November 4, 1952, with resulting tsunamis following. Both earthquakes occurred at approximately the same location where the Pacific Plate subducts the Okhotsk Plate at the Kuril-Kamchatka Trench. The depth of the trench at the point of the earthquakes is 7000 - 7500 meters. Kamchatka also lies at the western end of the Bering fault, between the Pacific Plate and North American Plate[1].

1737 Earthquake

The epicentre of the 1737 earthquake was located at 52.5°N and 159.5°E. This earthquake occurred at a depth of 40 km. A magnitude of 9.3Mw has been estimated.

1952 Earthquake

The main earthquake struck at 16:58 GMT (04:58 local time) on November 4, 1952. Initially assigned a magnitude of 8.2, the quake was revised to 9.0 Mw in later years[2]. A series of tsunami resulted, causing destruction and loss of life around the Kamchatka peninsula and the Kuril Islands. Hawaii was also struck, with estimated damages of up to US$1million and livestock losses, but no human casualties were recorded. Japan also reported no casualties or damage. The tsunami reached as far as Alaska, Chile, and New Zealand[3][4].

The epicentre was located at 52.75°N and 159.5°E, at a depth of 30 km. The length of the subduction zone fracture was 600 km. Aftershocks were recorded in an area of approximately 247,000km2, with epicentres at depths of between 40 and 60km[5][6].

See also

References

1. ^ [1]
2. ^ [2]
3. ^ [3]
4. ^ [4]
5. ^ [5]
6. ^ [6]

External links

A megathrust earthquake is an interplate earthquake where one tectonic plate slips beneath (subducts) another. Due to the size of the tectonic plates and the shallow dip of the plate boundary, these earthquakes are among the world's largest, with moment magnitudes that can exceed 9.
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Kamchatka Peninsula (Russian: полуо́стров Камча́тка
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tsunami (IPA: /(t)sʊˈnɑːmi/) is a series of waves created when a body of water, such as an ocean, is rapidly displaced.
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Pacific Plate is an oceanic tectonic plate beneath the Pacific Ocean.

To the north the easterly side is a divergent boundary with the Explorer Plate, the Juan de Fuca Plate and the Gorda Plate forming respectively the Explorer Ridge, the Juan de Fuca Ridge and the Gorda
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The Okhotsk Plate is a continental tectonic plate covering the Sea of Okhotsk, the Kamchatka Peninsula, and Eastern Japan. It was considered a part of the North American Plate, but recent studies show that it is an independent plate.
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Kuril-Kamchatka Trench or Kuril Trench is an oceanic trench with a maximum depth of 10,542 metres (34,000 ft). It extends from the Aleutian Trench to the north, to the Japan Trench to the south.
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North American Plate is a tectonic plate covering most of North America, extending eastward to the Mid-Atlantic Ridge and westward to the Cherskiy Range in East Siberia.
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The 2006 Kamchatka earthquakes was a series of powerful shocks that started on April 20, 2006 at 23:25 UTC (April 21, 2006 at 12:25 PM local time) as a major quake[1] with the magnitude of 7.6 on the Richter scale.
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The following is a list of major earthquakes.

USGS list of significant earthquakes

This is a list of significant earthquakes as listed by the USGS. For other ancient or recent earthquakes not listed here, see the tables below.
Date Time‡ Place Lat. Long. Fatalities Mag.
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