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发生在北纬42.6°—44.9°、东经129°一131°间的吉林珲春、东宁、延吉、穆棱、牡丹江深源地震群,南北长260公里、东西宽120公里,仪器记录自公元1918至1975年
Occurred in Jilin Hunchun, Dongning, Yanji, Muling and Mudanjiang deep source seismic groups between latitude 42.6 ° -44.9 ° and longitude 129 ° -131 ° east with a length of 260 km from north to south and 120 km from east to west. The records of the instrument range from 1918 to 1975