首都圈地区现今地壳垂直形变特征

利用首都圈地区1998、2001、2005、2007年151期精密水准复测资料，分析该区近十年来地壳垂直形变状态与动态特征。结果表明，形变场以继承性运动为主，即山区上升、盆地及平原下降。值得注意的是首都圈西部地区等值线分布密集有序，有些象限图形特征，东西升，南北降，其最大差值为10mm／a，可能预示该区应力场处于逐步积累及有所加强的势态，虽然异常形变数值及所涉面积均较小，但仍需跟踪关注。

The Current Characteristics of Vertical Crustal Deformation of the Capital Circle

Based on four periods of re-measured precise leveling data of 1998,2001,2005 and 2007 in the capital circle,the status and dynamic characteristics of the vertical crustal deformation during the past ten years in this region are analyzed.The result shows that the Inheritance motion is dominant in the deformation field,which means uplift in the mountain zone and subsidence in the basin and plain.The isoline distribution in the northwest capital circle is dense and orderly and has the four-quadrant characteris...