Английская Википедия:1982 Urakawa earthquake

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Шаблон:Infobox earthquake The 1982 Urakawa earthquake (Шаблон:Lang-ja[1]) was a Шаблон:M 6.9 earthquake that struck off the coast of Urakawa, Japan on 11:32 (JST), March 21, 1982.[2][3]Шаблон:Sfn The epicenter was Шаблон:Coord.[4] The earthquake was the largest earthquake in the history of the region. The earthquake caused 167 injuries and damage in Tomakomai and Sapporo.[5][6]

Tectonic setting

Hokkaido is situated on the Okhotsk Plate in between two main zones of seismicity. To the west, there is a convergent plate boundary with the Amurian Plate.Шаблон:Sfn To the east, there exists a subduction zone where the Pacific Plate subducts underneath the Okhotsk. This is accommodated by slip along the Kuril-Kamchatka Trench and the Japan Trench.Шаблон:Sfn This earthquake struck as the result of thrust faulting in an area of compression known as the Hidaka Collision Zone.Шаблон:Sfn The same tectonic process, caused by the collision between the Eurasian Plate and the Kuril fore-arc uplifts the Hidaka Mountains.Шаблон:Sfn

Earthquake

At 2:32 UTC or 11:32 local time on the 21st of March, a large earthquake struck off the shore of southern Hokkaido. The Шаблон:M 6.9 earthquake caused shaking that reached a maximum Japan Meteorological Agency seismic intensity scale Shindo of 6- and a Modified Mercalli intensity (MMI) of X (Extreme). The event struck at a depth of Шаблон:Convert, and ruptured along the Hidaka Collision Zone.Шаблон:Sfn Inferred rupture dimensions were Шаблон:Convert by Шаблон:Convert with an average slip of Шаблон:Convert.Шаблон:Sfn Aftershocks covered an area of Шаблон:Convert by Шаблон:Convert.Шаблон:Sfn

Tsunami

Teletsunami observations[7]
Location Recorded height (m)
Urakawa, Japan 1.3
Ayukawa, Japan 0.6
Hachinohe, Japan 0.6
Shoya, Japan 0.3
Kuji, Japan 0.3
Kamaishi, Japan 0.2
Kushiro, Japan 0.2

Tsunami from the earthquake was observed around Hokkaido, with varying run-up heights.[7] Urakawa had the highest run-ups with waves reaching up to Шаблон:Convert high and going up to Шаблон:Convert inland.[7] The observations at Hachinohe and Hiroo were much higher than models predicted, however this may be due to the models not taking into account more local topography that could influence wave heights.Шаблон:Sfn

References

Шаблон:Reflist

Sources Шаблон:Refbegin

Шаблон:Refend

External links

Шаблон:Earthquakes in 1982Шаблон:Earthquakes in Japan


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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jap_name не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок location не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ja_info не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ja_info_2 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ja_info_3 не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ja_info_yahoo не указан текст
  7. ↑ 7,0 7,1 7,2 Ошибка цитирования Неверный тег <ref>; для сносок global_tsunamis не указан текст
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