根据中国地震局分析预报中心提供的资料，１９９９年２月份华北地区（３３．０°～４２．０°Ｎ，１１１．０°～１２５．０°Ｅ）共发生ＭＬ≥３．０地震１０次（见表１），最显著的事件是２月１４日黄海ＭＬ３．８地震。本月地震频度与上月相当，震中比较分散，华北平原... According to the information provided by the Center for Analysis and Prediction of China Earthquake Administration, ML≥3.0 earthquakes occurred in North China in February 1999 (33.0 ° ~ 42.0 ° N, 111.0 ° ~ 125.0 ° E) for 10 times (See Table 1). The most notable event is the February 3 ML 3.8 earthquake in the Yellow Sea. The frequency of this month’s earthquake was quite similar to that of the previous month, and the epicenter was relatively scattered with the North China Plain ...