The Earthquake Early Warning logo used by the Japan Meteorological Agency is a Namazu (鯰). Many earthquake-preparedness activities in Japan use the catfish as a mascot; in Japanese mythology earthquakes were caused by a giant catfish, or seeing catfish foretold an earthquake. Related to this wiki. Earthquake warning system
Tokyo from Edo to Showa 1867-1989: The Emergence of the World's Greatest City (2010) 650pp excerpt and text search; previously published as Seidensticker, Low City, High City: Tokyo from Edo to the Earthquake (1983), and Tokyo Rising: The City since the Great Earthquake. (1990). 384 pp. online book review; Siebert, Loren.