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1984年2月17日10点37分青海省祁连县东南(37°42′N,100°10′E)发生了5级地震(青海台网测定)。该区曾于2月13—16日发生3次M_L=2.0—3.6级地震,截止2月21日共发生7次M_L=2.8—3.3级余震。青海省地震局及国家地震局兰州地震研究所联合对这次地震进行了考察。
Earthquake occurred on the 17th of February 1984 at 10:37 in the southeast of Qilian County of Qinghai Province (37 ° 42’N, 100 ° 10’E). Three M_L = 2.0-3.6 earthquakes occurred in the area from February 13 to February 16, and seven M_L = 2.8-3.3 aftershocks occurred on February 21. Qinghai Seismological Bureau and Lanzhou Institute of Seismology Earthquake Research Institute jointly conducted a study of the earthquake.