An improved gravity method to horizontal tectonic stresses and its applications in Tibet

An improved gravity method to horizontal tectonic stresses and its applications in Tibet

Blog Article

It is significant for identifying mass movement patterns to invert horizontal tectonic stresses at different depths underneath Tibet.In recent years, a large number of achievements focusing on two-dimensional tectonic stresses have been obtained from gravity data.However, three-dimensional tectonic stresses in Tibet are still unknown or debatable.Therefore, in the present study an improved method to multilayer horizontal tectonic stresses using gravity observations is developed.

The inverted multilayer horizontal Nursing Pillow tectonic stresses are in agreement with those from previous studies.In addition, rich tectonic structure and development can be revealed from the inverted multilayer horizontal tectonic stresses: (1) the distribution of horizontal tectonic stresses at various depths shows strong correlation with that of the tectonic elements, 5 Piece King Bedroom where major faults and earthquake epicenters are corresponding with stress highs and the stable basins are consistent with stress lows.(2) the mass movement patterns of whole Tibet present clockwise, and the material movement directions in the west and east are approximately south-north and east-west, respectively.(3) in eastern Tibet, the eastward materials caused by the south-north extrusion between Indian and Eurasian plates are divided into two parts by the stable Sichuan Block, one flowing nearly southeast and the other moving almost northeast.

The inverted multilayer horizontal tectonic stresses may provide direct evidences for mass movement patterns in Tibet.