March 2011 Sanriku earthquake
From EverybodyWiki Bios & Wiki
 | This article may be expanded with text translated from the [[:ja:Lua error in Module:Wikidata at line 967: attempt to index field 'wikibase' (a nil value).|corresponding article]] in 日本語. (September 2022) Click [show] for important translation instructions.
|
 | |
  | |
| UTC time | 2011-03-09 02:45:20 |
|---|---|
| ISC event | 16293272 |
| USGS-ANSS | ComCat |
| Local date | March 9, 2011 |
| Local time | 11:45 JST |
| Magnitude | 7.3 Mww 7.2 MJMA[1] |
| Depth | 32 km (20 mi) |
| Epicenter | 38°26′06″N 142°50′31″E / 38.435°N 142.842°E ⧼validator-fatal-error⧽ |
| Areas affected | Japan |
| Max. intensity | IV (Light) JMA 5− |
| Tsunami | 55 cm |
| Casualties | None |
The March 2011 Sanriku earthquake was an earthquake that occurred around 11:45 JST on 9 March 2011 (JST). A tsunami advisory was issued from Aomori Prefecture to the Pacific coast of Fukushima Prefecture, and a 55 cm tsunami was observed at Ofunato. It is thought to be a foreshock of the Tohoku-Pacific Ocean Earthquake ( Mw 9.0) that occurred two days later on 11 March.[2]
Overview[edit]
The epicentre was 38°19'42"N, 143°16'42"E at a depth of 8 km, and occurred at the boundary between the subducting Pacific plate and the North American plate. There was an M7.0 earthquake on January 19, 1981, in the northwest direction of the epicentre. Also, the main slip was in a region deeper than the epicentre.
Local seismic intensity[edit]
The places where seismic intensity 4 or more was observed are as follows[3]
| Earthquake intensity | Prefectures | Observation point |
|---|---|---|
| More than 5 | Miyagi Prefecture | Kanari, Kurihara City, Yoneyama-cho, Sako-cho, Tome-shi, Kimatsuka, Misato-cho |
| 4 | Aomori Prefecture | Hachinohe City Maru /Nango, Shichinohe Town Morinoue, Rokunohe Town Inuakase, Tohoku Town, Kamikita Minami, Gonohe, Furudate, Nanbu Town, Tomabechi, Hashikami Town, Dobutsu, Oirase Town, Nakashimoda/Kamiyodo, Higashidori Village, Odanosawa |
| Iwate Prefecture | Satsuki Town, Miyako City, Kawasaki Town, Naganai Town, Kuji City, Osawa Town, Yamada Town, Fudai Village Doya, Noda Village, Takada Town, Rikuzentakata City, Nakatsuma Town, Kamaishi City, Shinmachi, Otsuchi Town, Sanno Town, Yabukawa Town, Morioka City Shibutami, Joboji Town, Ninohe City, Kozenji, Ichinohe Town, Osara, Tagashira, Noda, Hachimantai City, Minamiyahaba, Yahaba Town, Hizume, Shiwa Town, Cormorant Fishing, Takizawa City, Ishidoriya Town, Zaimoku Town, Towa Town, Hanamaki City, Aikami City, Kitakami City Town, Matsuzaki Town, Tono City, Yamame, Hanaizumi Town, Senmaya Town, Murone Town, Ichinoseki City, Nishine, Kanegasaki Town, Hiraizumi Town, Hiraizumi Town, Mizusawa Ogane Town, Oshu City, Mizusawa Sakuragawa, Esashi, Maezawa, Isawa Ward, Kinugawa Ward | |
| Miyagi Prefecture | Akaiwa/Sasagajin, Kesennuma City, Nakashinden/Onoda, Kami Town, Shikamado, Shikama Town, Shinmachiura, Wakuya Town, Kurikoma, Tsukidate, Wakayanagi, Takashimizu, Semine, Uguisawa, Shiwahime, Hanayama, Ichisako, Nakata Town, Tome City・Toyosato Town, Tome Town, Minamikata Town, Minamisanriku Town Shizugawa, Misato Town Kitaura, Osaki City Furukawa Mikkamachi, Naruko, Furukawa Kita Town, Matsuyama, Kashimadai, Iwadeyama, Tajiri, Natori City Masuda, Iwanuma City Sakura, Zao Town Circle Ogawara-cho Shinnan, Kawasaki-cho Maekawa, Marumori-cho Toriya, Sendai Miyagino-ku Kutake, Ishinomaki-shi Izumi-cho, Kadowaki, Ainoya, Maeyachi, Monou-cho, Higashimatsushima-shi Yamoto, Ono, Matsushima-cho Takagi, Rifu-cho, Ohira Murohira | |
| Akita Prefecture | Kitakawajiri, Ikawa Town, Yuwa Myoho, Akita City, Takanashi, Daisen City | |
| Yamagata Prefecture | Asuka, Sakata City, Chuo, Murayama City, Oinomori, Tendo City, Nagasaki, Nakayama Town | |
| Fukushima Prefecture | Fujita, Kunimi Town |
Tsunami[edit]
- 11:48 Tsunami advisory announced (Pacific coast of Aomori prefecture, Iwate prefecture, Miyagi prefecture, Fukushima prefecture).
- 14:50 Tsunami warning lifted.
At Ofunato, the first wave (13 cm) was observed as an undertow at 12:03, and the maximum wave (55 cm) was observed at 12:16.
Other tsunamis observed in various places are as follows:[4]
| Name of tsunami forecast area | Tsunami height observed within the forecast area | |
|---|---|---|
| Tsunami warning (big tsunami) | ||
| Tsunami warning | Iwate Prefecture | 55 cm (highest tsunami) |
| Miyagi Prefecture | 48 cm | |
| Pacific Coast of Aomori Prefecture | 21 cm | |
| Fukushima Prefecture | 21 cm | |
| Areas where tsunami warnings were not issued | Central Pacific Coast of Hokkaido | 30 cm |
| Ibaraki Prefecture | 20 cm | |
| Western Hokkaido Pacific Coast | 16 cm | |
| Sotobo, Kujukuri, Chiba Prefecture | 8 cm | |
| Eastern Pacific Coast of Hokkaido | 7 cm | |
| Ogasawara Islands | 6 cm | |
See also[edit]
- Fukushima earthquake
- Sanriku earthquake
- Miyagi earthquake
- List of earthquakes in 2011
- List of earthquakes in Japan
External links[edit]
References[edit]
- ↑ "2011年3月9日 三陸沖の地震". www.hinet.bosai.go.jp. Retrieved 2022-09-07.
- ↑ "気象庁｜報道発表資料". www.jma.go.jp. Retrieved 2022-09-07.
- ↑ "震度データベース検索". www.data.jma.go.jp. Retrieved 2022-09-08.
- ↑ "気象庁 | 津波警報・注意報評価". www.data.jma.go.jp. Retrieved 2022-09-08.
 |
Wikimedia Commons has media related to March 2011 Sanriku earthquake. |
| Nuclear accidents |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Foreshocks, Aftershocks |
| ||||||||
| Relief and Recovery |
| ||||||||
| Pop culture | |||||||||
| Other | |||||||||
 | This article about an earthquake is a stub. You can help EverybodyWiki by expanding it. |
This article "March 2011 Sanriku earthquake" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:March 2011 Sanriku earthquake. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.
