1994 Kuril Islands earthquake

1994 Kuril Islands earthquake
Date October 4, 1994 at 13:23:00 UTC [1]
Magnitude 8.3 Mw [1]
8.1 Mj [2]
Depth 3 km (2 mi) [1]
Epicenter 43°51′N 147°10′E / 43.85°N 147.17°E / 43.85; 147.17Coordinates: 43°51′N 147°10′E / 43.85°N 147.17°E / 43.85; 147.17 [1]
Areas affected Russia and Japan
Casualties 10–12 dead
242–1,742 injured
1,200 homeless [3]

The 1994 Kuril Islands earthquake occurred on October 5 at 00:23:00 local time. The magnitude of this earthquake was put at Mw 8.2, or Mj 8.1. The epicenter was located at about 70 km east of Shikotan Island. The shaking and tsunami caused road and building damage. At least 10 people were reported dead.

Earthquake

This earthquake was an intra-slab earthquake within the Pacific Plate which is subducting beneath the Okhotsk Plate.[4][5]

Damage

Oil storage tanks in Malokurilsk and Krabozavodsk were damaged. An oil leak occurred and causing heavy contamination of the port area.[6]

Intensity

The intensity was MSK VI~IX in Shikotan Island.[7]

The earthquake could be felt in Tokyo with shindo 3, and in Hokkaido, the highest intensity reached shindo 6.[8][9]

Aftershocks

A large aftershock of magnitude Mw 7.1 or Ms 7.7 occurred on October 9, 1994 at 07:55 UTC. It was located at 43.97° N, 148.22° E with a depth of 33 km.[7] It generated a tsunami, and a peak-to-trough tsunami wave height of 18 cm was recorded in Hanasaki, Japan.[10]

Tsunami

A numerical simulation of the tsunami suggested that the first wave was caused by a significant subsidence north of the Kuril Islands due to the earthquake.[11]

A peak-to-trough tsunami wave height of 346 cm was recorded in Hanasaki, Japan.[10]

This earthquake triggered a tsunami in southern Kuril Islands and Hokkaido.[12] The tsunami run-up height was more than 3 m in Yuzhno-Kurilsk bay and 5 m in Zelenyi Island, Russia.[7]

See also

References

  1. 1 2 3 4 ISC (2016), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 3.0, International Seismological Centre
  2. ↑ Cho, I.; Nakanishi, I.; Sato, T. (1999), "A feasibility test of CMT inversion using regional network of broad-band strong-motion seismographs for near-distance large earthquakes", Earth, Planets and Space, Springer Science+Business Media, 51: 247
  3. ↑ USGS (September 4, 2009), PAGER-CAT Earthquake Catalog, Version 2008_06.1, United States Geological Survey
  4. ↑ ftp://ftp.gps.caltech.edu/pub/avouac/Ge277-2007-fall/Tanioka_GRL1995.pdf
  5. ↑ http://www.iitk.ac.in/nicee/wcee/article/11_1599.PDF
  6. ↑ http://www.eeri.org/lfe/pdf/Japan_KurilIslands_Insert_Jan95.pdf
  7. 1 2 3 Melentyev, A. M.; Eisenberg, J. M. (1996). An engineering analysis of the consequences of the Shikotan earthquake of October 4(5), 1994 (PDF). Eleventh World Conference on Earthquake Engineering. Paper No. 1256. ISBN 0080428223.
  8. ↑ http://www.pari.go.jp/search-pdf/no0802.pdf p5
  9. ↑ http://ci.nii.ac.jp/naid/110006879701
  10. 1 2 http://earthquake.usgs.gov/earthquakes/eqarchives/significant/sig_1994.php
  11. ↑ "Generation of Tsunamis in the Okhotsk Sea Caused by the 1994 Great Kuril Earthquake" by Y. Tanioka
  12. ↑ http://www.sakhgu.ru/expert/Tsunami/Near.htm
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