1968 Hyūga-nada earthquake
   | |
| UTC time | 1968-04-01 00:42:07 |
|---|---|
| ISC event | 823387 |
| USGS-ANSS | ComCat |
| Local date | April 1, 1968 |
| Local time | 09:42:07 |
| Magnitude | 7.5 Mw[1] |
| Depth | 30 km [1] |
| Epicenter | 32°27′N 132°16′E / 32.45°N 132.27°E [1] |
| Areas affected | Japan |
| Max. intensity | JMA 5−–JMA 5+[2] MMI VII (Very strong)[2] |
| Tsunami | Yes |
| Casualties | 1 dead, 22 injured |
The 1968 Hyūga-nada earthquake (
Hyūga-nada Sea, off the islands of Kyushu and Shikoku, Japan. The magnitude of this earthquake was also given as MJMA 7.5.[3] A tsunami was observed.[4] One person was killed, and 22 people were reported injured.[2][5] The intensity reached shindo 5 in Miyazaki and Kōchi
.
Description
This was an
Nankai megathrust to the Ryukyu Trench just south of Kyusyu.[6]
This earthquake is the strongest event recorded in the Hyūga-nada Sea region. The maximum slip was estimated to be 4 m.[7] It was estimated that, in the Hyūga-nada Sea region, earthquakes with magnitudes about 7.6 occur with a period of about 200 years, while earthquakes with magnitudes about 7.1 occur with a period of about 20 to 27 years.[8] It has been pointed out that there is a tendency of occurrence of inland earthquakes in Kyushu before and after large interplate earthquakes in the Hyūga-nada Sea region.[9]
See also
References
- ^ a b c ISC (19 January 2015), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 2.0, International Seismological Centre
- ^ doi:10.7289/V5TD9V7K
- ^ "高知県の地震活動の特徴". www.jishin.go.jp. 地震調査研究推進本部. Archived from the original on 2011-03-23.
- S2CID 130121891.
- .
- ^ "日向灘". www.jishin.go.jp.
- ^ "Archived copy" (PDF). Archived from the original (PDF) on 2011-07-20. Retrieved 2011-04-02.
{{cite web}}: CS1 maint: archived copy as title (link)
External links
- The International Seismological Centre has a bibliography and/or authoritative data for this event.