摘要
1991年，通过对山东各地小震活动的研究，发现鲁中博山地区小震活动频度和山东地区近几年发生的一系列4、5级中强地展有较好的对应关系，中强震发生前，该区小震活动经历一个“密集－平静－发震”的过程，放将其作为监视山东地区中强地震活动的一个“震情窗口”。自正式使用以来，在南黄海、苍山两次5级地震前，该窗口都出现了符合预报指标的显著异常，在预报中发挥了重要作用。
Through a study of small earthquake activities in various areas in Shandong Province, it is found that the small earthquake activity frequence in Boshan area in central Shandong Province has a relatively good corresponding relation with M4- 5 moderately strong earthquakes occurred in recent several years in Shand0ng region. Before a moderately strong earthquake, the small earthquake activity in this area will undergo a ' concentrated-quiet-earthquake occurrence' process, so it is considered as a ' seismic situation window' for monitoring the moderately strong earthquake activity in Shandong region. Since it was formally used, before the Southern Yellow Sea and Cangshan M5 earthquakes, this window showed notable anomalies conforming to prediction index and played an important role in prediction.
出处
《华北地震科学》
1997年第3期40-44,共5页
North China Earthquake Sciences
关键词
窗口效应
地震预报
地震窗
山东
短期预报
window effectiveness
earthquake prediction
earthquake window
Shandong
short-term prediction
