全球构造非对称性的定量分析

Quantitative Analysis of Global Tectonic Asymmetry

完全基于空间大地测量数据,得出全球活动构造板块边缘相对运动速度、板块间运动类型、南半球膨胀、北半球压缩以及GPS垂向运动季节性变化振幅和相位随纬度的分布等,由此得出全球构造分布定量特征:全球构造在空间位置和几何形态上相互对称,而构造特征性质相反—即全球构造非对称性。

The relative motion rates and motion types of the Global active plate boundaries are obtained from space geodetic data, and the annual amplitudes and phases of the seasonal variation of GPS height whose distrbutions depending on the latitude are detected. In addition, the expansion of South hemisphere and compression of North hemisphere are derived from space geodetic measurements respectively. All these show that the spatial position and geometric shape of global tectonics are symmetrical while the tectonic feature is contrary——namely asymmetry of the Global tectonics.