摘要
利用GPS资料,采用聚类分析方法分析张家口-渤海断裂带(简称张渤带)的活动性,分析表明:张渤带是首都圈地壳运动最强烈的断裂带。通过小波分析对GPS资料进行空间减噪处理,并建立张渤带运动模型,得出以下结论:张渤带滑动量约为0.5mm/a,南盘与北盘的应变积累程度相当;张渤带具有从锁定到滑动或从滑动到锁定的时间交替过程;断裂带两侧的应变积累在空间上交替出现。
The activity of Zhangjiakou-Bohai fault zone was analyzed with GPS data by cluster method. The analysis result shows that the crustal movement of Zhangjiakou-Bohai fault zone is the strongest in the Capital Circle region. The spatial noising was weakened by wavelet analysis and the fault movement model was given, and then the conclusion is drawn as follows. The slip rate of Zhangjiakou-Bohai faults is about 0. 5 mm/a, the strain of footwall is similar to that of hangwall. It changes with time-alternating translation in Zhangjiakou-Bohai fault zone from locked to slipped or from slipped to locked, and appears to be spatial alternation of strain accumulation in both side of the fault zone.
出处
《大地测量与地球动力学》
CSCD
北大核心
2008年第1期11-15,共5页
Journal of Geodesy and Geodynamics
基金
国家科技支撑计划子专题"利用GPS资料对地壳运动与强震地点预测的研究"(2006BAC01B02-02-02)
"强地震孕育过程中地形变动态演化与地震预报技术研究"(2006BAC01B02-02-05)
