Английская Википедия:2019 Yamagata earthquake
Шаблон:Short description Шаблон:Infobox earthquake The Шаблон:Nihongo[1] was an earthquake of magnitude 6.4 Шаблон:M which struck primarily the Hokuriku region in Japan on 18 June 2019 at 22:22 JST (13:22 UTC). The epicenter was close to the city of Tsuruoka, Yamagata.[2][3][4][5] A tsunami warning was also issued.[4][5]
Geology
Шаблон:Main The northwestern side of Honshu lies on the southeastern margin of the Sea of Japan, an area of oceanic crust created by back-arc spreading from the late Oligocene to middle Miocene. The extensional tectonics associated with the spreading formed a series of N-S trending extensional faults and associated basins. The crust in this area is subjected to east–west compression associated with the convergent boundary between the Amur Plate and the Okhotsk PlateШаблон:Refn. As a result of this strain, the north–south trending extensional faults are reactivated in a reverse sense.[6] The 1964 Niigata earthquake, the 1983 Sea of Japan earthquake, and the 1993 Hokkaidō earthquake were all a result of similar processes.[7]
Damage and effects
The magnitude 6.4 earthquake triggered a tsunami advisory for three prefectures in Japan.[8][3] A tsunami with a height of 10 cm was reported in Niigata.[9] The earthquake damaged a total of 149 homes in Akita, Niigata, and Yamagata prefectures.[10]
Casualties
Twenty-six people were reported to be injured, mostly by fallen debris.[11]
Transportation
Sections of the Nihonkai-Tōhoku Expressway and Yamagata Expressway were closed by the East Nippon Expressway Company. National Route 345 was blocked by fallen debris in Murakami.[12]
Utilities
Tohoku Electric Power announced that a blackout occurred in parts of Yamagata and Niigata prefectures because of the earthquake, with 1000 customers impacted in Tsuruoka and 200 customers impacted in Sakata.[13] As a safety precaution, gas services were interrupted in Niigata Prefecture.[14]
Seismic intensity
This chart describes the maximum perceived shaking using the Japan Meteorological Agency seismic intensity scale, or Shindo scale, for the earthquake throughout the impacted area.
| Intensity | Prefecture | City or municipality name |
|---|---|---|
| 6+ | Niigata | Murakami |
| 6- | Yamagata | Atsumigawa, Tsuruoka |
| 5+ | Atsumi, Tsuruoka, Michidamachi, Tsuruoka | |
| 5- | Niigata | Nagaoka, Kashiwazaki, Aga |
| Yamagata | Other areas in Tsuruoka, Sakata, Ōkura, Mikawa | |
| Akita | Yurihonjō |
See also
References
Explanatory notes Шаблон:Reflist Citations Шаблон:Reflist
External links
Шаблон:Earthquakes in 2019 Шаблон:Earthquakes in Japan Шаблон:Portal bar Шаблон:Authority control
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