Dynamics of interaction between fields of seismicity and surface deformations (Bishkek geodynamic test area) |
| |
Authors: | G A Sobolev N A Zakrzhevskaya K N Akatova V G Gitis A B Derendyaev V D Bragin N A Sycheva S I Kuzikov |
| |
Institution: | 1.Schmidt Institute of Physics of the Earth,Russian Academy of Sciences,Moscow,Russia;2.Kharkevich Institute of Information Transmission Problems,Russian Academy of Sciences,Moscow,Russia;3.Research Station,Russian Academy of Sciences,Bishkek,the Kyrgyz Republic |
| |
Abstract: | The spatial-temporal dynamics of surface crustal movements revealed from GPS data is compared with seismicity in the Bishkek
geodynamic test area documented in the regional KNET catalog. The geological information system (GIS) GeoTaim 2.0 is substantially
improved, which allowed variations in seismicity and deformation fields to be analyzed in the 3D raster. It is shown that
seismicity and surface deformations are correlative in the test area. The periods with extreme values of contraction and the
extension rates of the Earth’s surface areas are accompanied by enhanced seismicity and strong earthquakes. The increase in
the spatial gradient of surface crustal movements coincides with changes in the azimuths of compression axes indicated by
mechanisms of earthquakes that occurred at depths of up to 25 km. For a better geological—geophysical interpretation of interactions
between deformation and seismicity fields in the Bishkek geodynamic test area, the spatial system GPS stations and measurement
frequency need substantial improvement. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|