一、前言1948年5月23日17时13分18秒,威海市西北海域(北纬37.7度,东经121.9度)曾发生过一次6级地震。1985年我们对这次地震进行了初步的调查。由于地震距今近四十年,对震前的宏观异常现象很难搜集到,调查中只是搜集了一些震时烈度和有关地质方面的材料,结合以往的资料写成此文。 I. Preface At 6:13:18, May 23, 1948, a magnitude 6 earthquake occurred in the northwestern Weihai area (37.7 degrees north latitude and 121.9 degrees east longitude). In 1985, we conducted a preliminary survey of the earthquake. Since nearly 40 years have passed since the earthquake occurred, it is very difficult to collect the macro anomalies before the earthquake. Only a few earthquake-related intensity and related geologic materials were collected during the survey, and the paper was compiled from the previous data.