A case where earthquake signs could be grasped by research results of the Research Institute for Earthquake PredictionEarthquake Prediction Research Center and Natural Disaster Research Center analyze natural disasters analyzed from “crustal deformation value / direction of crustal movement / change of observation water level / change of ground current value / weak earthquake occurrence / ground strength data / detailed rainfall prediction data” Alert information is delivered.
- We send “Natural Disaster Analysis Report” describing earthquakes with intensity of 5 or more that may occur within a week on every Monday.
- We Send emergency report when abnormality occurs in crustal deformation value, observation water level value, etc.
Below, we will introduce examples where a big earthquake actually occurred after the earthquake prediction research center distributed it.
Oct. 6, 2017 23:56 Fukushima M5.9 maximum seismic intensity 5 lower
In the report on October 2, 2017, small-scale crustal deformation was observed at several points in the Tohoku region, and weak earthquakes occurred frequently in Fukushima Prefecture off the coast. Within 7 days Fukushima Prefecture I described the possibility of M6 class earthquake off the coast of Ibaraki prefecture. 4 days after that an earthquake with M5.9 · maximum seismic intensity of less than 5 occurred off Fukushima Prefecture on October 6.
Aug. 24, 2017 14.34 Kagoshima M4.5 maximum seismic intensity 4
In the report of August 21, 2017, large-scale crustal deformation in the southeast direction similar to 3 days before M5.4 · maximum seismic intensity 4 occurred in the southern part of Kagoshima Prefecture on January 25, 2010 was observed. And 3 days later, the possibility of occurrence of earthquake of the same scale class was described. An earthquake with “M4.5 · maximum seismic intensity 4” occurred in Kagoshima bay 3 days later.
Dec. 28, 2016 21:38 Ibaraki M6.3 maximum seismic intensity 6 lower
In the report of December 26. 2016, a weak earthquake occurred off the coast of Fukushima Prefecture off the coast of Ibaraki prefecture was similar to the situation 3 days before the M6 class earthquake occurred in the same area in the past, so Chiba we described the possibility of occurrence of the same scale earthquake in central part of prefecture. Two days after, in the northern part of Ibaraki Prefecture, an earthquake occurred M6.3 · the maximum seismic intensity was 6 lower.
Nov. 12, 2016 6:43 Miyagi M5.8 maximum seismic intensity 4
In the report of November 7, 2016, it is observed that large crustal deformation has been observed at multiple points in the Tohoku region Pacific side for 3 weeks, and the latest data show that crustal deformation towards the Oshika peninsula is observed, The possibility of M6 class earthquake occurrence around the Oshika Peninsula was described. An earthquake with “M5.8 maximum seismic intensity 4” occurred off Miyagi prefecture on November 12, five days after that.
Oct. 21, 2016 14:07 Tottori M6.6 maximum seismic intensity 6 lower
In the report on October 3, 2016, weak earthquakes sharply increased from September 26 rapidly (more than 500 times / week), so the possibility of large earthquake occurrence in Tottori prefecture in about 2 to 3 weeks or so I mentioned something. 18 days after that an earthquake occurred on October 21, “M6.6 · maximum seismic intensity was 6”.
Sep. 26, 2016 14:19 Okinawa M5.6 maximum seismic intensity 5 lower
In the report of September 19, 2016, since small scale crustal movements were observed at several points in the main island of Okinawa, we described the possibility of M5 class earthquake occurrence within 7 days around the main island of Okinawa. 7 days after that, on September 26, an earthquake occurred in the Okinawa main island ocean “M5.6 · maximum seismic intensity was less than 5”.
Jun. 16, 2016 14:21 Hokkaido M5.3 maximum seismic intensity 6 lower
In the report of June 9, 2016, the crustal deformation value in Aomori Prefecture · Kazamaura from the earthquake occurrence situation and past data statistics was increasing trend, so the possibility of earthquake of M5 class within 7 days It is stated that there is. 7 days later, on June 16th, an earthquake occurred at Uchiura Bay, “M5.3, with a maximum seismic intensity was 6 lower”.
Sep. 12, 2015 5:49 Chiba M5.2 maximum seismic intensity 5 lower
In the report on 7th September 2015, crustal deformation different from usual was observed in the southern part of the Boso Peninsula in Chiba Prefecture and in Hachigo, Ibaraki prefecture, so the possibility of M5 class earthquake occurrence was described within 7 days. An earthquake with “M5.2 · seismic intensity 5 lower” occurred in Tokyo Bay on September 12, 5 days after that.