摘要
GPS repetition measurement data in Qinghai Xizang (Tibetan) area in 1992 and 1994 have been used to determine the change rates of seven baseline vectors of Lhasa Wenquan, etc. It is the first time to obtain the direct observation results of the large scale crustal horizontal motions in this area. These preliminary results also for the first time provide the direct observation evidence for some important geophysical and geological viewpoints, such as the northward gradual reduce of the effect of the northward push pressing to Eurasian continent by Indian Plate in the Qinghai Xizang area, having a southward strike slip movement of the Chuan Dian diamond block, etc.
GPS repetition measurement tbta in Qinghai-Xizatlg (Tibetan) area in 1992 and 1994 have been used to determine the change rates of seven bascline vectors of Lhasa-Wenquan, etc. It is the first time to obtain the direct observation results of the large-scale crustal horizontal motions in this area. Thesc preliminary results also for the first time provide the direct observation evidence for some important geophysical and geological viewpoints, such as the northward gradual reduce of the effect of the northward push-pressing to Eurasian continent by Indian Plate in the Qinghai-Xizang area, having a southward strike slip movement of the Chuan-Dian diamond block, etc.
