North Niigata earthquake
| North Niigata earthquake | |
|---|---|
  | |
| | |
| Main shock | |
| Outbreak day | April 1, 1995 |
| The outbreak time | 12:49:34 (JST) |
| Epicenter | Kitakanbara-gunSasakamimuraNeighborhood 37 degrees N 53.4 minutes 139 degrees E 14.8 minutes (}) |
| Depth of the seismic center | 16km |
| Scale | Meteorological Agency magnitude (Mj) note 15.6 |
| Maximum seismic intensity | It is Niigata-shi, Niigata, Aigawamachi, Sasakamimura, Izumozakimachi Meteorological Agency seismic scale 4 |
| Tsunami | Unavailable |
| Kind of the earthquake | Earthquake in the continental plate |
| Landslide | Unavailable |
| Aftershock | |
| The number of times | 305 times of note 2 |
| Damage | |
| Casualties | A dead person: Unavailable An injured person: 82 (a severely wounded person: six, a slight illness: 76) |
| Damage area | The neighborhood of Sasakamimura |
| Note 1 depends on Meteorological Agency seismic intensity database Note 2 depends on a Niigata University department of science geological feature science department survey The source: When there is not an explanatory note in particular, Geographical Survey Institute depends on "the urgent disaster survey about the earthquake of 1995 North Niigata". | |
| A project: Earth science, a project: Disaster | |
North Niigata earthquake (にいがたけんほくぶじしん) is an earthquake of Mj 5.6 [1] that made Sasakamimura, Niigata (a part of existing Agano-shi) cause at 12:49 on April 1, 1995 to M 6.0 [2]. There is not the name named by the Meteorological Agency, but, in Meteorological Agency, Geographical Survey Institute, there is the example referred to an earthquake of North Niigata.
Table of contents
Summary
The maximum seismic intensity observed with a seismometer was 4, but it was corrected by a seismic intensity of 5 because the damage of complete destruction and the partial destruction of the dwelling house occurred successively including 市島邸湖月閣 which was cultural assets of the prefecture designation having completely collapsed around Sasakamimura. In addition, it was supposed that there was shaking equivalent to a seismic intensity of 6 in a small range (range of 5.6km * 1km) of the neighborhood of epicenter because the seismic center was shallow [3]. In Kumano Shrine of epicenter district Kamitakada, the trace that produced vibration more than the acceleration of gravity was left.
There was not the observation point, and the epicenter occurred by observation and the analysis by the observation point of the slightly remote Meteorological Agency (Niigata region meteorological observatory) off Niigata (the Kaji River), and it was reported when I produced damage, but it was demanded from Sasakamimura of the inland in those days with the neighborhood of Sasakamimura Kamitakada that was between it in Uetsu Main Line Kamiyama Station and Tsukioka Station near the seismic center by the analysis that put the observation data with other engines together. In addition, I assume the depth of the seismic center 16km [1] at the Meteorological Agency, but there are 10km and the analysis result to do [3].
Earthquake image
The epicenter was the south end of the aftershock area of the Niigata earthquake in 1964 [4] and the seismic activity was not active until now, but came to have a series of earthquakes from about October, 1994. An earthquake of magnitude 4-5 was generated sporadically in December, 1994, but it becomes clear from the next aftershock activity that this earthquake is one of a series of activity of the series of earthquakes [5]. It was the earthquake that occurred at the east end of the seismic gap that I produced by an earthquake by the activity of the saphena dislocation which was not known on the Niigata plains of the neighborhood of Niigata-shi in those days, and the seismic center dislocation had the possibility of the major earthquake pointed out by some researchers not an earthquake by the activity of the known dislocation [3].
The maximum aftershock is an earthquake of M 5.2 of April 2 [2].
Damage situation
The dead person was zero for human damage, and the injured person was 82 people.
Building damage
| The city area name of a village | Dwelling house damage | Non-dwelling house Damage | The total | |||
|---|---|---|---|---|---|---|
| Complete destruction | Partial destruction | A part Destruction | 計 | |||
| The total | 55 | 181 | 1,376 | 1,612 | 1,169 | 2,781 |
| Toyosaka-shi | 0 | 23 | 176 | 199 | 168 | 367 |
| Sasakamimura | 52 | 98 | 364 | 514 | 536 | 1,050 |
| Suweon-cho | 1 | 48 | 289 | 338 | 58 | 396 |
| Toyoura-cho | 2 | 11 | 534 | 547 | 391 | 938 |
| Shibata-shi | 0 | 1 | 7 | 8 | 6 | 14 |
| Niigata-shi | 0 | 0 | 0 | 0 | 1 | 1 |
| Niitsu-shi | 0 | 0 | 0 | 0 | 6 | 6 |
| Arakawa-machi | 0 | 0 | 1 | 1 | 0 | 1 |
| Kyogase village | 0 | 0 | 1 | 1 | 1 | 2 |
| Seiro-machi | 0 | 0 | 2 | 2 | 0 | 2 |
| Kajikawamura | 0 | 0 | 1 | 1 | 1 | 2 |
| Kamedacho | 0 | 0 | 1 | 1 | 0 | 1 |
| Ajikatamura | 0 | 0 | 0 | 0 | 1 | 1 |
Human damage
| The city area name of a village | Serious case | Slight illness | 計 |
|---|---|---|---|
| Toyosaka-shi | 1 | 17 | 18 |
| Sasakamimura | 2 | 40 | 42 |
| Suweon-cho | 1 | 5 | 6 |
| Toyoura-cho | 1 | 7 | 8 |
| Shibata-shi | 1 | 1 | 2 |
| Kyogase village | 0 | 2 | 2 |
| Wide Koshimura | 0 | 1 | 1 |
| Kamedacho | 0 | 2 | 2 |
| Nishikawa-machi | 0 | 1 | 1 |
- The source: There are the Tatsuo Usami "latest damage earthquake conspectus "416" - 2004 municipalities which still became extinct by merger of cities, towns and villages than page 531 (Tokyo University publication society) in Japan", but table 704 - 2 "damage situation according to the area of Niigata" decides to write it down in the city area name of a village at the time of the earthquake damage.
Harbinger phenomenon
Quantity of gush is a well for increase and the water level observation under the ground, and, as a harbinger phenomenon except the serieses of earthquakes, a blowout phenomenon is observed in Tsukioka Onsen in the neighborhood, and the abnormality of groundwater, the hot spring is reported before and after this earthquake.
Footnote
Source
- ^ a b "Seismic intensity database retrieval". The Meteorological Agency. September 3, 2013 reading.
- ^ a b Earthquake of the neighborhood of Niigata of earthquake 2-these days of Niigata (PDF) Niigata UniversityDepartment of science geological feature science department
- It is study Vol.35 (1996) No. 3 P153-163 about an earthquake of North Niigata in the Quaternary period for ^ a b c 1,995 years
- ^ Earthquake (on April 1, 1995 M6.0) of North Niigata (PDF) The Meteorological AgencyForetelling an earthquake Information Systems Section
- The ^ "urgent disaster survey about the earthquake of 1995 North Niigata." Geographical Survey Institute. September 3, 2013 reading.
Allied item
- Niigata earthquake (the earthquake that attacked Niigata-shi in 1964)
- Niigata - Kobe distortion intensive obi
- The earthquake that was generated at the west end of the Niigata - Kobe distortion intensive obi in South Hyogo earthquake January, 1995.
Outside link
- Coordinating Committee for Earthquake Prediction bulletin Vol. 54
- North Niigata earthquake investigation Japan snow engineering bulletin Vol.11 (1995) No. 3 P172-176
- Niigata region meteorological observatory homepage
- The supervision is still from "けんせつほくりく" (from April, 2001 issue "ほっとほくりく") which is bulletin of 社団法人北陸建設弘済会 "a compendium of seasonal words of Hokuriku the Ministry of Construction Hokuriku Regional Construction Bureau けんせつほくりく April, 1998 issue".
- A disaster survey: Main photograph, figure
This article is taken from the Japanese Wikipedia North Niigata earthquake
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