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利用历史地震和现代小地震资料(其中包括少数有感地震)分析区域地震活动图象的文章已屡见不鲜,然而专门分析有感地震区域特征的文章尚未见到。这是由于历史上的有感地震是根据有关史料记载分析的结果,精度低,难于分析其区域特征;而现代有感地震资料的积累受到时间的限制,尚未取得一定数量的资料。本文对山东地区近十多年的有感地震进行了搜集整理,并研究其区域地震活动图象,发现其规律性远比相近震级范围的无感地震图象强,从而加深了对本区地震活动格局的认识。有关同一震级范围有感地震与无感地震图象的差异以及有感地震的宏观研究等方面的问题将另作讨论。
It is not uncommon to find articles that analyze seismic activity in the region using historical and modern small seismic data, including a few earthquakes, yet articles that specifically analyze the characteristics of a region of seismic sensation have yet to be seen. This is because the historic earthquake is based on the historical records of the results of the analysis, the low accuracy, difficult to analyze the characteristics of the region; and the accumulation of modern sense of seismic data subject to time constraints, yet to obtain a certain amount of information. This paper collected and sorted the sensitive earthquakes in Shandong area for nearly ten years and studied the seismic activity images in the area and found that the regularity is far stronger than the non-seismic images in the similar magnitude range, thus deepening the seismic activity in this area Understanding of the pattern. The questions about the differences between the seismic images with and without sense in the same magnitude range and the macroscopic research of the sensitive earthquakes will be discussed separately.