1. Japan Meteorological Agency (JMA), Press releases (in Japanese). 〈http://www.jma.go.jp/jma/press/1611/22b/kaisetsu201611221100.pdf〉, 2016 (accessed 22.11.16).
2. United States Geological Survey (USGS), M6.9–37km ESE of Namie, Japan. 〈http://earthquake.usgs.gov/earthquakes/eventpage/us10007b88#executive〉, 2016 (accessed 22.11.16).
3. National Research Institute for Earth Science and Disaster Resilience (NIED), Fault mechanism analysis by F-net (in Japanese). 〈http://www.hinet.bosai.go.jp/topics/off-fukushima161122/?LANG=ja&m=mt〉, 2016 (accessed 07.12.16).
4. GEOFON, NearEast Coast of Honshu, Japan. 〈http://geofon.gfz-potsdam.de/eqinfo/event.php?Id=gfz2016wxkb〉, 2016(accessed 22.11.16).
5. Global CMT catalog, Global CMT Web Page. 〈http://www.globalcmt.org/〉, 2016 (accessed 23.11.16).