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利用2001~2011年以来的北天山地区跨断层水准测量资料,对北天山山前构造带上的主要断层垂直运动特征进行分析,并总结这一时间尺度资料所反映出的一些异常变化与地震的对应关系,客观地对跨断层垂直形变测量资料在该地区地震预测方面的作用和效能进行解释。研究结果表明:现今北天山山前地区地壳运动以继承性运动为主。震前形变异常与发震具有一定的相关性。在研究区内发生5.0~6.0级地震前,若干条测线会同步出现相对集中的异常,出现异常的频次明显增加,特别是处于同一构造带上的测线异常表现更加明显,而6.0级以上的强震则表现出一种趋势性慢形变的异常过程。
Based on the cross-fault leveling data of the northern Tianshan Mountains since 2001 ~ 2011, the vertical movement of the main faults in the North Tianshan piedmont was analyzed and some anomalous changes reflected in this time-scale data are summarized. Corresponding relationship, objectively explain the role and effectiveness of vertical deformation measurement data of straddling fault in the earthquake prediction in this area. The results show that the crustal movement in the North Tianshan Piedmont is dominated by inheritance. Pre-earthquake deformation anomalies and seismogenic have some relevance. Before the occurrence of the M5.0 ~ M6.0 earthquake in the study area, some of the surveyed lines will appear relatively concentrated anomalies simultaneously with a significant increase in the frequency of anomalies, especially in the same structural belt. However, the line anomalies above Grade 6.0 Strong earthquakes show a trend of abnormal deformation of slow deformation process.