新疆地区现今地壳运动

Present-day Crustal Deformation in Xinjiang

根据 1 995～ 2 0 0 2年期间国家测绘局在我国新疆和南天山地区进行的多期GPS形变监测和地球动力学领域的合作研究获得的GPS观测资料 ,并结合中亚、天山地区的GPS连续跟踪站以及全球连续跟踪站数据 ,利用GAMIT/GLOBK软件对这些数据进行了分析处理 ,获得了较为详尽和准确的我国新疆和天山地区的地壳运动特征 ,并据此研究了塔里木块体和天山地区板内运动规律。

We present a preliminary determination of crustal deformation based primarily on GPS measurements we made in Xinjiang from 1995 to 2002,combined with the data of continuous GPS data in Central Asia.The results show that the sites on the southern border of the Tianshan move at (15～19)mm/a to the NNE relative to the stable Eurasia plate.This rate increases to (20.9±0.6)mm/a at Yopurga,our southernmost site in the Tarim basin,located 35km to the southeast of the range front.A preliminary GPS Eurasia_Tarim Basi...