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自2011年8月对新疆乌苏艾其沟泥火山实施24小时连续观测以来,在距泥火山200km范围内,相继发生了MS5.0、MS6.0和MS6.6地震.其中,在MS6.0和MS6.6地震前,艾其沟泥火山液面均出现了“背景值—上升—转折—下降—背景值”的异常变化现象,而地震都发生在泥火山液面下降的过程中.这一现象与已知的霍尔果斯泥火山震例异常有所不同,显示了泥火山的震兆异常特征可能与其构造条件密切相关.
The MS5.0, MS6.0 and MS6.6 earthquakes occurred successively within 200km from the mud volcano since the continuous observation of the Aizigou Mud Volcano in Wusu County, Xinjiang in August 2011. Among them, MS6.0 and MS6.6 Before the MS6.6 earthquake, the anomalous change of “background value-rising-turning-falling-background value” occurred in the surface of the volcano Aizi Gully volcano, and the earthquakes occurred during the drop of mud volcano. The phenomenon is different from that of the known Horgos mud volcano. It shows that the characteristics of the anomalous earthquakes in mud volcano may be closely related to the tectonic setting.