| 鲜水河断裂带的构造大地测量 |
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| 引用本文： | 刘本培,朱智勤,廖华,吕弋培.鲜水河断裂带的构造大地测量[J].大地测量与地球动力学,2001,21(4):17-25. |
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| 作者姓名： | 刘本培 朱智勤 廖华 吕弋培 |
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| 作者单位： | 1. 武汉大学,
2. 四川省地震局地震测量队, |
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| 基金项目： | 国家自然科学基金 (4 97742 13)资助项目 |
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| 摘 要： | 利用短边GPS点阵、短基线标石阵和精密激光测距 ,在与鲜水河断裂带的断层破裂带垂直的剖面上和构造盆地内进行构造大地测量 ,获得了断层软弱带和断层蠕变带上的最佳形变分布。综合利用相关地学成果和理论 ,揭示了构造形变所隐含的动力学信息 ,识别了断层应变带、塑性流变带和主断面在地面的分布范围。用外围GPS远场联测成果探讨了该断裂带的驱动力机制 ,匡正了其“左旋”运动和现今活动速度的含义。最后 ,评估了该断裂的地震活动趋势
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| 关 键 词： | 构造大地测量 断面强化 应变积累 |
| 修稿时间： | 2001年4月5日 |
TECTONIC GEODETIC SURVEY ALONG THE XIANSHUIHE FAULT ZONE |
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| Liu Benpei ,Zhu Zhiqin ,Liao Hua and Lu Yipei Wuhan University,Wuhan Seismosurvey Team of Sichuan Seismological Bureau,Ya'an,Sichuan.TECTONIC GEODETIC SURVEY ALONG THE XIANSHUIHE FAULT ZONE[J].Journal of Geodesy and Geodynamics,2001,21(4):17-25. |
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| Authors: | Liu Benpei Zhu Zhiqin Liao Hua and Lu Yipei Wuhan University Wuhan Seismosurvey Team of Sichuan Seismological Bureau Ya'an Sichuan |
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| Institution: | Liu Benpei 1),Zhu Zhiqin 1),Liao Hua 2) and Lu Yipei 2) 1)Wuhan University,Wuhan 430079 2)Seismosurvey Team of Sichuan Seismological Bureau,Ya'an,Sichuan 625000 |
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| Abstract: | On the profile perpendicular to the fault zone and fractured band in Xianshuihe and also in the fault basin, utilized GPS points array of short range lines, markstone array of short baselines and precise laser ranging, we made the tectonic geodetic survey to obtain the best deformation distribution on the flaccid zone and creep zone of the fault. Integrated with related geonomy results and theories the geodynamic information connoted in the tectonic deformation is revealed and identifies every area of fault strain band, fault creep band and main fault surface on the surface of earth. Taking advantage of GPS measurement results observed simulataneously at other far stations around the fault zone, the driving mechanism of Xianshuihe fault zone is discussed and the meanings of its "left lateral" motion and today's active velocity are explained more clearly than before. At last the trends of earthquake activity in Xianshuihe fault zone is estimated. |
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| Keywords: | tectonic geodetic survey fault surface strenthening strain accumulation |
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