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中文摘要：
本文利用1990年以来的甘肃测震台网资料,计算获得2013年岷县漳县6.6级地震前邻区地震b值和Δb值的空间图像。结果表明,该6.6级地震发生在甘东南地区显著低b值异常区域的边缘,且震前邻区地震Δb值异常显著。从岷县漳县6.6级地震与低b值空间分布关系来看,该地震的发生并未降低该区域的强震危险性。
英文摘要：
Based on seismic data from the Gansu seismic network since 1990,we calculated b values andΔb values in the epicentral region before the 2013 Minxian-Zhangxian MS6.6earthquake.The results show that the earthquake occurred at the margin of significantly lowb value area in southeastern Gansu,and before earthquake the area around the epicenter has significantly abnormalΔb values.From the earthquake and the spatial distribution of lower b values,this earthquake does not decrease the possibility of dangerous strong earthquake to occur in this region.
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