摘要
用数值模拟方法研究了地壳旋转运动与空间重力变化的关系,得出地壳划分的长方体的旋转运动引起的重力变化呈中心对称分布。青藏高原地区的研究资料表明,该区域绕青藏高原东构造存在顺时针旋转运动。文中结合该地区的数字高程以及GPS观测速率数据,计算了青藏高原块体旋转运动引起的重力变化,并与GRACE卫星重力观测结果进行了对比分析。
The relation between rotary crust movement and the gravity change was studied with numerical simulation and the conclusion that the gravity change caused by the rotary displacement of a crustal cuboid was distributed in a central symmetry was drown. Research data of Qinghai-Tibet Plateau shows that there is a clockwise rotation around the area's east structure. Combining with the GPS velocity field and DEM data, the gravity changes caused by the rotary movement in this area was calculated. And then the result was compared with the gravity changes by GRACE satellite gravimetry and an analysis was given.
出处
《地理空间信息》
2014年第4期37-39,9,共3页
Geospatial Information
基金
陕西省教育厅自然科学基金资助项目(12JK0798)
陕西省科学技术厅自然科学基础研究计划资助项目(2011JM5005)
陕西铁路工程职业技术学院科研基金资助项目(2011-40)
关键词
构造
卫星重力
旋转运动
重力变化
tectonic,satellite gravity,rotary motion,gravity change
