1909 Anegawa earthquake
  | |
| UTC time | 1909-08-14 06:30:54 |
|---|---|
| ISC event | 16958049 |
| USGS-ANSS | ComCat |
| Local date | August 14, 1909 |
| Local time | 15:30 |
| Magnitude | 6.9 Mw[1] |
| Depth | 15 km (9.3 mi) [1] |
| Epicenter | 35°46′23″N 136°33′25″E / 35.773°N 136.557°E[1] |
| Areas affected | Japan |
| Max. intensity | JMA 6 |
| Tsunami | 1.8 m (5 ft 11 in) at Lake Biwa |
| Casualties | 41 fatalities, 784 injuries |
The 1909 Anegawa earthquake affected Shiga and Gifu prefectures in Japan on August 14. The epicenter of the Mw 6.9 earthquake was located in Gifu Prefecture and its focal depth was estimated at 15 km (9.3 mi). There were at least 41 fatalities and over 1,000 homes destroyed. A 1.8 m (5.9 ft) high tsunami was also recorded in Lake Biwa.[2]
Earthquake
The earthquake may have occurred on the Tsurugawan-Isewan Tectonic Line, a major fault trending generally northwest–southeast in central Japan. The fault zone comprises five active fault segments that trend northwest–southeast and west-northwest–east-southeast. Its northern strand, the Kaburagi Fault, runs along the edge of Tsuruga Bay and joins the Yanagase Fault to its south. A bend towards the east–southeast separates the fault from the Sekigahara Fault. The earthquake likely ruptured the central portion of the Sekigahara Fault. A possible precursor event sequence may have began ten years before the mainshock as "notable earthquakes" occurred along an area between Tsuruga Bay and Ise Bay. The damage area from the earthquake was considered smaller than expected for its magnitude. The fault zone also contains two additional segments; the Yoro and Isewan faults; the latter is considered a branch of the Japan Median Tectonic Line.[3] The Sekigahara Fault produces reverse and left-lateral strike-slip movement.[4]
Impact
Forty-one people died and at least 784 were injured. In addition to 1,100 destroyed houses, many temples were razed. An additional 1,000 homes were also damaged. The slope of
See also
References
- ^ a b c ISC (2016), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2012), Version 3.0, International Seismological Centre
- doi:10.7289/V5TD9V7K
- .
- ^ 柳ヶ瀬・関ヶ原断層帯 [Yanagase-Sekigahara fault zone] (in Japanese). Headquarters for Earthquake Research Promotion. Retrieved 3 June 2024.
- ^ "Earthquake in Japan kills 30". San Francisco Call. Vol. 106, no. 77. 16 August 1909. Retrieved 2 June 2024.
- ^ "The earthquake in Japan". The Mercury. 28 September 1909. p. 3. Retrieved 2 June 2024.
- ^ 「姉川地震記録」発見 １１０年前の惨状、生々しく 滋賀の郷土史研究グループ ["Anegawa earthquake record" discovered: Shiga local history research group vividly depicts devastation 110 years ago]. The Sankei Shimbun (in Japanese). 14 June 2018. Retrieved 2 June 2024.
- ^ 姉川地震 [Anegawa earthquake] (in Japanese). Nagahama City Local History Learning Materials. Retrieved 2 June 2024.