2014 Nagano earthquake
UTC+9) | |
Magnitude | 6.2 Mw (USGS) 6.7 MJMA (JMA) |
---|---|
Depth | 9.0 km |
Fault | Kamishiro fault |
Type | Reverse |
Max. intensity | MMI IX (Violent) JMA 6− |
Casualties | 41 injuries |
On November 22, 2014, at 22:08 local time (UTC +9), an earthquake struck southeast of Hakuba, Nagano Prefecture. It had a magnitude of 6.2 Mw according to the United States Geological Survey, with a maximum intensity assigned IX (Violent) on the Modified Mercalli intensity scale. According to the Japan Meteorological Agency, it is recorded as 6.7 MJMA and at its peak intensity at Shindo 6 Lower on the Japan Meteorological Agency seismic intensity scale.[1][2] The earthquake did not result in any deaths, however 41 people sustained mild to severe injuries.
Earthquake
The quake was generated by the movement of the Kamishiro fault. The
Intensity
Intensity | Prefecture | Location |
---|---|---|
6- | Nagano | Nagano (city), Togakushi, Kinasa, Otari Village, Ogawa Village, Nakaotarihei, Takafu |
5+ | Nagano | Toyono, Hakuba, Shinano, Hakoshimizu |
Niigata | Nakajo | |
5− | Niigata | Joetsu, Niigata (city), Itoigawa, Sekikawa, Myoko |
Nagano | Shinshushin-Shinmachi, Nakano, Omachi, Toyotsu, Iizuna, Yazaka, Mure, |
Impacts
Damage
In the Oide district of the Hakuba village near the epicenter and where most ground ruptures were observed, no damage was observed. Instead, damage was observed in the Horonouchi and Mikkaichiba areas which were apparently 3 kilometers south of the epicenter. Some have speculated that the reason why damage was mostly concentrated in Horonouchi was due to soft ground and sedimentary rock in the area, but some speculate that it was due to its location between complex displacement zones.[6]
Evacuation and temporary housing
On November 23, an evacuation advisory was held for the town of Otari for 69 people from 31 households due to the mass damage and difficulties that were caused by the earthquake.[7] By November 28, 81 people in 40 households as well as 258 people from 110 households were evacuated.[8]
In Hakuba, it was decided to build about 35 temporary housing units for the people that were affected. As of mid-December, more than 90 people were living in secondary evacuation facilities such as accommodation facilities due to damage to their houses. Of these, 76 people are scheduled to move into 33 households, targeting residents who have been certified as completely or partially destroyed and those who have been instructed to evacuate due to landslides. The village is considering renting private housing when the number of units is insufficient.[9] The village of Otari however, had no plans of making new temporary housing for the residents. Instead they planned to rebuild and renew existing houses that were severely damaged and destroyed.
Electricity
According to the Chubu Electric power, the main electric supplier of the Chubu region, 1,760 households lost power and reduced to 180 units by 11 o'clock.[8] The Himekawa second power plant and hydroelectric power plant, as well as the Minaminomata power plant on the other hand, was forced to shut down.[7]
Water supply
According to the Nagano Prefecture Disaster Countermeasures Headquarters, water outages occurred in about 420 households in Nagano City, 270 households in Hakuba, 180 households in Otari and about 20 houses in Omachi.[8] A day after the earthquake water outages also occurred in Ogawa and Iiyama but were immediately restored.[8]
Transportation
Traffic disturbances occurred due to landslides in Hakuba, Hokujo, Nitta and Otari. However, by December 3, most were lifted due to easy clearance or roads. Some roads most notably, Highway No. 406, were still closed due to assessment of displacement and liquefaction.[8]
See also
References
- ^ "M 6.2 - 6 km SSE of Hakuba, Japan". earthquake.usgs.gov. Archived from the original on 2019-06-20. Retrieved 2021-10-05.
- ^ "気象庁|報道発表資料". www.jma.go.jp. Retrieved 2021-10-05.
- ^ "2014年11月22日長野県北部の地震の評価". www.jishin.go.jp. Retrieved 2021-10-06.
- ^ "気象庁|報道発表資料". www.jma.go.jp. Retrieved 2021-10-06.
- ^ "sokuho.pdf" (PDF). Archived (PDF) from the original on 2014-12-02.
- .
- ^ a b "長野県北部を震源とする地震の被害状況等について : 防災情報のページ - 内閣府". www.bousai.go.jp. Retrieved 2021-10-17.
- ^ a b c d e "8月5日~6日大雨による県内への影響について" (PDF). www.bousai.go.jp.
- ^ INC, SANKEI DIGITAL (2014-12-09). "白馬村仮設住宅着工、年内入居へ". 産経ニュース (in Japanese). Retrieved 2021-10-17.