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25 Oct 1990 description


UNDRO 90/1666
CHINA - EARTHQUAKE IN GANSU PROVINCE
UNDRO INFORMATION REPORT NO. 1
25 OCTOBER 1990

1. AT 1607 HOURS, 20 OCTOBER 1990, AN EARTHQUAKE MEASURING 6.2 ON THE RICHTER SCALE STRUCK TIAN ZHU, JING TAI AND GU LANG COUNTRIES IN GANSU PROVINCE. BY 7 HOURS, 21 OCTOBER, 105 AFTERSHOCKS HAD OCCURRED, 6 OF WHICH REGISTERED GREATER THAN 3 ON THE RICHTER SCALE, THE STRONGEST REGISTERED 5.1.