On crustal movement in Mt. Qomolangma area |
| |
Authors: | Junyong Chen Zemin Wang Shangyi Pang Ji Zhang and Quande Zhang |
| |
Institution: | 1. State Bureau of Surveying & Mapping, Beijing 100830, China 2. Wuhan Technical University of Surveying & Mapping, Wuhan 430079, China |
| |
Abstract: | Mt. Qomolangma lies in the collision zone between the fringe of Eurasia plate and Indian plate. The crustal movement there
is still very active so far. In the past three decades China carried out five geodetic campaigns in Mt. Qomolangma and its
north vicinal area, independently or cooperatively with other countries, including triangulation, leveling, GPS positioning,
atmospheric, astronomical and gravity measurements. On the basis of the observation results achieved in the campaigns the
crustal movements in the area were studied and explored. A non-stationary phenomenon both in time and space of the crustal
vertical movement in the area is found. There seems to be some relevance between the phenomenon of non-stationary in time
and seismic episode in China. The phenomenon of non-stationary in space is possibly relevant to the no-homo- geneity of crustal
medium and non-uniform absorption of terrestrial stress. The horizontal crustal movement in the area is in the direction of
NEE at a speed of 6–7 cm per year, and the trend of strike slip movement is manifested evidently in the collision fringe of
Indian plate and Qinghai-Xizang block. |
| |
Keywords: | Mt Qomolangma crustal movement geodynamics |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|