On July 12, 1993, a magnitude 7.6 Ms (7.7 Mw) (HRV) earthquake at 13:17 UT in the Sea of Japan near Hokkaido caused a back-arc tsunami that caused damage in all of the countries bordering the Sea of Japan. The earthquake had a rupture length of 150 km, a movement of 2.5 m and a dip to the east of 24 degrees. The tsunami was 32 meters high on Okishuri, Island, where the most destruction occurred. The whole island subsided by 5-80 cm.
Damage and Fatalities in Japan: The tsunami caused about 230 fatalities (reference #378), destroyed several hundred homes and caused about $1.2 billion dollars in damage. (Fatalities in Japan were not differentiated as to earthquake or tsunami.) Property damage included 71 ports on Hokkaido and property losses due to the earthquake and tsunami were $179 million. One person in a fishing boat was killed off Aomori, Honshu, Japan. Three were missing off the southeastern coast of Russia; 165 were killed on Okushiri; about 74 were killed on Hokkaido.
Damage in Russia: Damage was caused to a factory at Kamenka, Sakhalin Island, and to Vladivostok, Russia, which reported two-meter waves. Waves with heights up to four meters were observed on the Primorye coasts of Russia. Damage in Russia exceeded $6.5 million.
Damage in Korea: Damage of nearly half a million dollars occurred, mostly to fishing boats and equipment.
(above from reference #1315)
At least 200 people were killed and 39 missing in the Hokkaido region, including at least 165 killed on Okushiri. One person on a fishing boat was killed off Aomori, Honshu. Three people were missing from the southeast coast of Russia. Severe damage (V JMA) was caused by the earthquake and accompanying fires, landslides and tsunami in southwestern Hokkaido. 540 houses were destroyed and 1,834 others were damaged. Approximately 600 fishing boats were damaged or lost off western Japan, southeastern Russia and South Korea. Tsunami wave heights as high as 30.6 m was reported along the southwest coast of Okushiri Island, 10 meters along the west coast of Hokkaio, 3 meters at Nakhodka, Russia, 2 meters along the northeast coast of South Korea and nearly 1 meter at Aomori, Honshu. The tsunami affected much of the southeastern coast of Russia and also caused damage to a factory at Kamenka, Sakhalin Island. (reference #1053)
232 deaths, 233 injured, $16 million damage. (reference #1250)
The estimate as of September 15, 1993,was a total of 231 fatalities, of which 208 were attributed to the tsunami. The total included 14 confirmed deaths in the Yo Yo Hotel,
which was buried by a landslide. Nine deaths were reported in Taisei. Fatalities were primarily elderly persons and children. (reference #3839)
References for the Significant Earthquake
References for the Significant Earthquake
ID
Author
Year
Citation
378
Satake, Kenji, and Yuichiro Tanioka
1995
Tsunami generation of the 1993 Hokkaido Nansei-Oki earthquake. In Tsunamis: 1992-1994, Kenji Satake and Fumihiko Imamura, eds., Pure Appl. Geophys., vol. 144, no. 3-4, p. 803-821.
DOI:10.1007/BF00874395
1053
National Earthquake Information Center (NEIC)
1971 to present
Preliminary Determination of Epicenters (PDE), a weekly and monthly publication, National Earthquake Information Center, U.S. Geological Survey, Golden, Colorado, 1971 to present.
1250
Centre for Research on the Epidemiology of Disasters (CRED) and the U.S. Office of Foreign Disaster Assistance (OFDA)
2001
EM-DAT: The OFDA/CRED International Disaster Database, Universite Catholique de Louvain, Brussels, Belgium, link
1282
Earthquake Research Committee
2003
Seismic Activity in Japan, The Headquarters for Earthquake Research Promotion. Retrieved March 24, 2003 from link
1315
Lander, J. F., L. S. Whiteside, and P. A. Lockridge
2003
Two Decades of Global Tsunamis, 1982-2002, Science of Tsunami Hazards, the International Journal of the Tsunami Society, Honolulu, Hawaii, USA, vol. 21, no. 1, p. 3-82.
3839
Chung, Riley M., Technical Editor
1995
Hokkaido-Nansei-Oki Earthquake and Tsunami of July 12, 1993 Reconnaissance Report, Earthquake Spectra, Supplement A to Volume 11, Publication 95-01, April 1995, 166 p.
On July 12, 1993, a magnitude 7.6 Ms (7.7 Mw) (HRV) earthquake at 13:17 UT in the Sea of Japan near Hokkaido caused a back-arc tsunami that caused damage in all of the countries bordering the Sea of Japan. The earthquake had a rupture length of 150 km, a movement of 2.5 m and a dip to the east of 24 degrees. The tsunami was 32 meters high on Okishuri, Island, where the most destruction occurred. The whole island subsided by 5-80 cm.
Damage and Fatalities in Japan: The tsunami caused about 230 fatalities (reference #378), destroyed several hundred homes and caused about $1.2 billion dollars in damage. (Fatalities in Japan were not differentiated as to earthquake or tsunami.) Property damage included 71 ports on Hokkaido and property losses due to the earthquake and tsunami were $179 million. One person in a fishing boat was killed off Aomori, Honshu, Japan. Three were missing off the southeastern coast of Russia; 165 were killed on Okushiri; about 74 were killed on Hokkaido.
Damage in Russia: Damage was caused to a factory at Kamenka, Sakhalin Island, and to Vladivostok, Russia, which reported two-meter waves. Waves with heights up to four meters were observed on the Primorye coasts of Russia. Damage in Russia exceeded $6.5 million.
Damage in Korea: Damage of nearly half a million dollars occurred, mostly to fishing boats and equipment.
(above from reference #1315)
At least 200 people were killed and 39 missing in the Hokkaido region, including at least 165 killed on Okushiri. One person on a fishing boat was killed off Aomori, Honshu. Three people were missing from the southeast coast of Russia. Severe damage (V JMA) was caused by the earthquake and accompanying fires, landslides and tsunami in southwestern Hokkaido. 540 houses were destroyed and 1,834 others were damaged. Approximately 600 fishing boats were damaged or lost off western Japan, southeastern Russia and South Korea. Tsunami wave heights as high as 30.6 m was reported along the southwest coast of Okushiri Island, 10 meters along the west coast of Hokkaio, 3 meters at Nakhodka, Russia, 2 meters along the northeast coast of South Korea and nearly 1 meter at Aomori, Honshu. The tsunami affected much of the southeastern coast of Russia and also caused damage to a factory at Kamenka, Sakhalin Island. (reference #1053)
232 deaths, 233 injured, $16 million damage. (reference #1250)
The estimate as of September 15, 1993,was a total of 231 fatalities, of which 208 were attributed to the tsunami. The total included 14 confirmed deaths in the Yo Yo Hotel,
which was buried by a landslide. Nine deaths were reported in Taisei. Fatalities were primarily elderly persons and children. (reference #3839)
References for the Significant Earthquake
References for the Significant Earthquake
ID
Author
Year
Citation
378
Satake, Kenji, and Yuichiro Tanioka
1995
Tsunami generation of the 1993 Hokkaido Nansei-Oki earthquake. In Tsunamis: 1992-1994, Kenji Satake and Fumihiko Imamura, eds., Pure Appl. Geophys., vol. 144, no. 3-4, p. 803-821.
DOI:10.1007/BF00874395
1053
National Earthquake Information Center (NEIC)
1971 to present
Preliminary Determination of Epicenters (PDE), a weekly and monthly publication, National Earthquake Information Center, U.S. Geological Survey, Golden, Colorado, 1971 to present.
1250
Centre for Research on the Epidemiology of Disasters (CRED) and the U.S. Office of Foreign Disaster Assistance (OFDA)
2001
EM-DAT: The OFDA/CRED International Disaster Database, Universite Catholique de Louvain, Brussels, Belgium, link
1282
Earthquake Research Committee
2003
Seismic Activity in Japan, The Headquarters for Earthquake Research Promotion. Retrieved March 24, 2003 from link
1315
Lander, J. F., L. S. Whiteside, and P. A. Lockridge
2003
Two Decades of Global Tsunamis, 1982-2002, Science of Tsunami Hazards, the International Journal of the Tsunami Society, Honolulu, Hawaii, USA, vol. 21, no. 1, p. 3-82.
3839
Chung, Riley M., Technical Editor
1995
Hokkaido-Nansei-Oki Earthquake and Tsunami of July 12, 1993 Reconnaissance Report, Earthquake Spectra, Supplement A to Volume 11, Publication 95-01, April 1995, 166 p.
