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    青藏高原现今高分辨率地壳运动特征

    方颖 江在森 张晶 武艳强

    方颖, 江在森, 张晶, 武艳强, 2009. 青藏高原现今高分辨率地壳运动特征. 地球科学, 34(3): 399-404.
    引用本文: 方颖, 江在森, 张晶, 武艳强, 2009. 青藏高原现今高分辨率地壳运动特征. 地球科学, 34(3): 399-404.
    FANG Ying, JIANG Zai-sen, ZHANG Jing, WU Yan-qiang, 2009. High-Resolution Characteristics of Recent Crustal Movement in Qinghai-Tibet Plateau. Earth Science, 34(3): 399-404.
    Citation: FANG Ying, JIANG Zai-sen, ZHANG Jing, WU Yan-qiang, 2009. High-Resolution Characteristics of Recent Crustal Movement in Qinghai-Tibet Plateau. Earth Science, 34(3): 399-404.

    青藏高原现今高分辨率地壳运动特征

    基金项目: 

    地震预测研究所基本科研业务专项 0207690201

    国家自然科学基金项目 40674010

    “十一·五”科技支撑项目 2006BAC01B02-02-02

    “十一·五”科技支撑项目 2006BAC01B02-02-05

    详细信息
      作者简介:

      方颖(1968-), 女, 副研究员, 主要从事GPS与断层活动性研究.E-mail: powersohi@163.com

    • 中图分类号: P553

    High-Resolution Characteristics of Recent Crustal Movement in Qinghai-Tibet Plateau

    • 摘要: 利用GPS资料, 采用最小二乘配置和小波技术分析了青藏高原的地壳运动特征, 对该区地壳运动强度和涡旋运动进行了定量分析.结果显示, 青藏高原地壳运动强度沿喀喇昆仑断裂、玛尼-玉树-鲜水河-小江的弧型构造带, 自西向东递减.川滇菱形块体显示出北强南弱、西强东弱的特点, 东边界形成明显的分界线, 而西边界并不明显; 青藏高原存在3个涡旋分区: 顺时针旋转的拉萨、羌塘及川滇中西部地区, 亚东-谷露断裂以东的区域为其涡旋高值区; 逆时针旋转的柴达木地块及其以北的地区, 西昆仑断裂与阿尔金断裂之间为其高值区; 逆时针旋转的青藏高原与华南地块的边界带, 龙门山与安宁河的拐角处为其高值区.

       

    • 图  1  欧亚基准下的中国大陆速度场(1999-2004年)

      Fig.  1.  Velocity field of Mainland China on European and Asian benchmark (1999-2004)

      图  2  青藏高原水平位移速度信号的经验协方差函数

      Fig.  2.  Experience covariance functions of horizontal displacement velocity signal in Qinghai-Tibet Plateau

      图  3  青藏高原多分辨率地壳运动强度

      Fig.  3.  Multi-revolution crustal movement strength of Qinghai-Tibet Plateau

      图  4  青藏高原旋涡运动(0.25°×0.25°)

      Fig.  4.  Vortex movement of Qinghai-Tibet Plateau

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    出版历程
    • 收稿日期:  2008-10-21
    • 刊出日期:  2009-05-25

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