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在日本西南部的南海海槽多次发生过俯冲带大地震 ,菲律宾海板块正在这里向日本俯冲。这些地震的复发时间及所影响的地区自１７世纪以来均有文字记载。根据历史文献 ,几乎整个南海海槽（５００ｋｍ长）每１００到２００ａ就被一两个继发性的大地震破坏而产生断裂。１９４４年Ｔ?
In the South China Sea trough in southwestern Japan many subduction earthquakes occurred, the Philippine Sea Plate is here to Japan subduction. The recurrence times of these earthquakes and the affected areas have been documented since the 17th century. According to historical documents, almost all of the South China Sea trough (500km long) is ruptured by one or two secondary earthquakes every 100 to 200 years. 1944 T?