 | |
  | |
| UTC time | 1993-01-15 11:06:05 |
|---|---|
| ISC event | 252904 |
| USGS-ANSS | ComCat |
| Local date | 15 January 1993 |
| Local time | 20:06 JST |
| Magnitude | 7.6 Mw 7.8 MJMA |
| Depth | 100 km (62 mi) |
| Epicenter | 42°59′N 144°20′E / 42.98°N 144.34°E[1][2] |
| Type | Intraplate |
| Total damage | ¥94.1 billion |
| Max. intensity | JMA 6 MMI IX (Violent)[3] |
| Peak acceleration | 1.06 g 1040.6 Gal |
| Tsunami | None |
| Landslides | Yes |
| Aftershocks | Yes |
| Casualties | 2 dead 966 injured[4] |
The 1993 Kushiro–Oki earthquake (釧路沖地震, Kushiro-Oki Jishin) was one of two large earthquake to strike the Japanese island of Hōkkaido within the same year. The earthquake with a magnitude of 7.6 Mw or 7.8 MJMA struck at 11:06 UTC or 08:06 pm JST on January 15 near the town of Ashoro. Shaking reached a maximum intensity of IX (Violent) on the Mercalli intensity scale, causing considerable damage, and was felt throughout the island, into northern Honshu, Sakhalin, and the Kuril Islands. As a result of the tremors, two people were killed and more than 600 were wounded.[5]
This earthquake was followed up by another 7.7 Mw earthquake six months later, occurring in the Sea of Japan which triggered a deadly tsunami. Over 200 deaths were recorded, with many missing. Although that earthquake killed more people, it was felt over a smaller area compared to the event in January, possibly because it had a deeper depth of focus.
- ^ ISC-OB Event 252904 [IRIS].
- ^ 日本付近の主な被害地震年代表 - 日本地震学会
- ^ National Geophysical Data Center / World Data Service (NGDC/WDS) (1959), Significant Earthquake Database (Data Set), National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K
- ^ "The Kushiro-Oki Earthquake, 1993 (January 15, M7.8) (Japan Meteorological Agency)" (PDF). Geospatial Information Authority of Japan. Sapporo District Meteorological Observatory, JMA.
- ^ "Significant Earthquake Information JAPAN: HOKKADIO, KUSHIRO, HACHINOHE, HONSHU". NGDC. Archived from the original on 2021-01-11. Retrieved 9 January 2021.