Kanto - Chubu Region
# A dotted line shows the aftershock area of the 2011 off the Pacific Coast of Tohoku Earthquake.
① On February 1, there was a M4.4 earthquake (maximum seismic intensity 4) in Toyama bay#.
# [Noto Region, Ishikawa Prefecture] was the regional name of the epicenter used in the Japan Meteorological Agency announcement.
② On February 23, there was a M4.5 earthquake (maximum seismic intensity 3) under northwestern Chiba prefecture.
(outside the above map)
* On February 25, there was a M6.1 earthquake (no observation with seismic intensity 1 or over) under the ocean near Torishima.
(outside the above period)
* On March 4, there was a M4.6 earthquake (maximum seismic intensity 4) under western Aichi prefecture#.
# [Middle Western Mino Region, Gifu Prefecture] was the regional name of the epicenter used in the Japan Meteorological Agency announcement.
J-EGG500 from the Japan Oceanographic Data Center, GTOPO30 from the US Geological Survey, and ETOPO2v2 from the National Geophysical Data Center in the U.S. were used for the topographic and bathymetric data.
[Earthquake(s) mentioned have one or more of the following features: M6.0 or greater or maximum seismic intensity 4 or greater, M4.5 or greater and maximum seismic intensity 3 or greater on shore, M5.0 or greater and maximum seismic intensity 3 or greater in the ocean area, other earthquakes with remarkable activity.]
N: total number of events in the figure
Japan Meteorological Agency
Ministry of Education, Culture, Sports, Science and Technology
[Evaluation of Seismic Activities for February 2015 (March 10, 2015)]