The ratio of tectonic structure and modern movements of the crust in area of geodynamic proving ground in Bishkek

3rd National scientific conference with foreign participants "Geodynamical Processes and Natural Hazards"

生态环境科学

Kuzikov, S.I.^1

Research Station of the Russian Academy of Sciences, Bishkek

720049, Kyrgyzstan^1

关键词: Earth's crust;    General kinematics;    GPS measurements;    High frequency HF;    Maximum velocity;    Orders of magnitude;    Residual deformation;    Tectonic structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/324/1/012011/pdf
DOI  :  10.1088/1755-1315/324/1/012011

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

According to the various scale GPS measurements, the process of collision between India and Eurasia is still ongoing and is reflected on Central Asia territory. The maximum velocity of shortening on northern component between India and Asia is ∼35 mm/year; the longitudinal (east-west) extension of the Tien Shan is ∼20 mm/year. The maximum deformations of shortening ∼15 mm/year along the north coordinate operate in a narrow fault zone between the Pamir and Tien Shan. Not on all Cenozoic (neotectonic) faults occur modern movements of the earth's crust, these faults may have separate segments of active at different times. The general kinematic tendencies of modern movements correlate well enough with the general kinematic structure of neotectonic faults. In the fault zones at distances from the first hundreds meters to the first kilometers, intense elastic changes in the baseline lengths up to 4 cm (strains of 10-4) can occur within a week and up to 3-5 months. Such high-frequency elastic events have a different character of manifestations and are 2-4 orders of magnitude greater level than stable many years' residual deformations.