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山东省的胶东半岛历史悠久，是我国文化发展较早的地区之一。根据有关史料的记载，该区曾发生过１０４６年山、４９５年虞丘山两次历史地震。但在确定地震参数时，由于历史原因，对史料中记载的“山”和“虞丘山”的位置说法不一，因而，对这两次地震的震中位置和震级存在不同的意见。针对这两次疑难历史地震的具体情况，我们收集、整理了已有的地震资料，细致地查阅了近百余种有关史料，并通过深入地野外考察，找到重要、可信的新证据，进而对这两次疑难地震的参数重新进行了确定。
Jiaodong Peninsula in Shandong Province has a long history and is one of the regions where the development of Chinese culture was earlier. According to historical records, there have been 1046 years in the area, 495 years, Yuqiu Mountain two historical earthquakes. However, for the purpose of determining the seismic parameters, due to historical reasons, the positions of “Dangshan” and “Yuqiu Mountain” recorded in the historical data have different opinions. Therefore, there are different views on the epicentral location and magnitude of these two earthquakes. In response to the specific circumstances of these two difficult historic earthquakes, we collected and collated the existing seismic data, consulted nearly a hundred kinds of relevant historical materials in detail, and found out important and credible new evidence through in-depth field visits. The parameters of these two difficult earthquakes were re-determined.