1933 Sanriku earthquake
UTC time | 1933-03-02 17:30:59 |
---|---|
ISC event | 905420 |
USGS-ANSS | ComCat |
Local date | March 3, 1933 |
Local time | 02:30:48 JST |
Magnitude | 8.4 Mw[1] |
Depth | 20 km (12 mi) |
Epicenter | 39°7.7′N 144°7′E / 39.1283°N 144.117°E |
Type | Dip-slip – Intraplate |
Areas affected | Japan |
Tsunami | Up to 28.7 m (94 ft) in Ryori, Kesen, Iwate, Tōhoku |
Casualties | 1,522 deaths, 1,542 missing, 12,053 people injured |
The 1933 Sanriku earthquake (昭和三陸地震, Shōwa Sanriku Jishin) occurred on the
caused widespread devastation.Earthquake
The epicenter was located offshore, 290 kilometres (180 mi) east of the city of
UTC March 2, 1933) and measured 8.4 on the moment magnitude scale.[2] It was in approximately the same location as the 1896 Sanriku earthquake and it occurred far enough away from the town that shaking did little damage. Approximately three hours after the main shock there was a magnitude 6.8 aftershock, followed by 76 more aftershocks (with a magnitude of 5.0 or greater) over a period of six months.[3] This was an intraplate event that occurred within the Pacific Plate,[4] and the focal mechanism showed normal faulting.[5]
Damage
Although little damage was produced from the shock, the
Ōfunato, Iwate, caused extensive damage, and destroyed many homes and caused numerous casualties.[6] The tsunami destroyed over 7,000 homes along the northern Japanese coastline, of which over 4,885 were washed away. The tsunami was also recorded in Hawaii with a height of 9.5 feet (2.9 m), and also resulted in slight damage.[2] The death toll came to 1,522 people confirmed dead, 1,542 missing, and 12,053 injured. Hardest hit was the town of Tarō, Iwate (now part of Miyako city), with 98% of its houses destroyed and 42% of its population killed.[7]
See also
Notes
- ^ a b "Historical Earthquakes:The 1933 Sanriku earthquake". United States Geological Survey. 14 March 2008. Archived from the original on 2008-07-24. Retrieved 2008-07-16.
- ^ The Meiji Sanriku Earthquake (June 15, 1896, M 8 1/2) and Sanriku Earthquake (March 3, 1933, M 8.1)
- ^ "日本海溝・千島海溝周辺海溝型地震に関する専門調査会報告" by 日本海溝・千島海溝周辺海溝型地震に関する専門調査会
- ^ Masayuki Nakao, "The Great Meiji Sanriku Tsunami". Association For The Study Of Failure
- Japan Times, 12 June 2011, pp. 9–10.
External links
- Historic video footage of devastation following 1933 Sanriku Earthquake
- The International Seismological Centre has a bibliography and/or authoritative data for this event.