利用常用的形态分析法和矢量合成法,研究2014年7月9日麦盖提Ms 5.1地震的前兆异常特征,并对其异常可靠性进行分析.结果表明:在地震发生前,距震中300 km范围内的南天山西段与和田地区共8套前兆仪器出现群体异常,异常特征主要表现为数据的速率快速变化、反向变化、年变畸变等.最后,对异常时空分布特征进行分析,对塔里木盆地内部发生5级以上地震对新疆及周边后续强震的指示意义进行了初步讨论.%In this paper,method of morphological analysis and vector synthesis are used to study the precursory anomalies of Maigaiti earthquake with Ms5.1,which occurred on July 9th,2014,and the reliability of the anomalies are analyzed.The results indicate that 8 sets of precursory instruments within the range of 300 km from the epicenter,which located in the western part of south Tianshan and Hetian district,appear obvious precursory anomaly before the earthquake.Anomaly characteristics mainly appear as accelerated change of rate,reverse change of direction and annual distortion of the data.Finally,temporal and spatial distribution characteristics of anomalies are analyzed,and the indication significance of the occurrence of earthquakes (Ms ≥5) in the Tarim Basin to the follow-up strong earthquake in Xinjiang and its surrounding areas is preliminarily discussed.
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