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2007年7月16日日本发生ML 6.8地震。此次地震前的7月6日,山东泰安台钻孔应变仪观测到异常变化。本文报告了变化情况,同时给出了水位和气压的变化。
July 16, 2007 ML 6.8 earthquake occurred in Japan. July 6 before the earthquake, Shandong Taian station borehole strain gauge abnormal changes were observed. This article reports changes and gives the changes in water level and pressure.