1993年广东连山小震群活动特征

FEATURES OF THE 1993'S LIANSHAN SMALL EARTHQUAKE SWARM IN GUANGDONG PROVINCE

１９９３年８月１日至１１月间，广东省连山县发生小展群活动，最大震级为ＭＬ３．６级，极震区烈度为Ⅳ度。各次地震震中位置基本上无变化，皆为２４．７°Ｎ，１１２．２°Ｅ，震源体位于太保花岗岩侵入体中，体积小，约为２０～３０ｋｍ３，震源深度较浅，约为５～１０ｋｍ。文章认为，连山小震群活动与华南沿海地区，特别是沿海西部地区的强震活动有一定的联系，但不具备前兆震群的一般特征。

A small earthquake swarm occurred in Lianshan area of Guangdong province, from August 1 to November, 1993. In this swarm, the maximum earthquake is ML3. 6 with epicentral intencity of Ⅳ. The earthquake centers are almost similar, that is N24. 7°,E112. 2°. Th earthquake source is located in the granite intrusive body. The volume of it is very small, about 20～30km3; the depth shallow, about 5～10km. It is indicated that the small earthquake swarm in Lianshan area, although has something to do with the occurrences of strong earthquake in South China coastal area,especially in the west of that,does not have the mark of precursory earthquke swarm.