群ぐん発ぱつ地じ震しんぐんぱつじしんじ字FuriganaMeanings1nounswarm earthquakes; earthquake swarmSeismological term for a series of many earthquakes occurring in a localized area over a relatively short period, without a clear mainshock.この地ち域いきでは群ぐん発ぱつ地じ震しんが頻ひん繁ぱんに観かん測そくされている
