|
|||||
|
|
The possibility of estimating the coseismic deformation from water level observations in wells |
|
| Authors: | G N Kopylova G M Steblov S V Boldina I A Sdel’nikova |
| Institution: | 1.Kamchatka Branch of the Geophysical Service,Russian Academy of Sciences,Petropavlovsk-Kamchatskii,Russia;2.Schmidt Institute of Physics of the Earth,Russian Academy of Sciences,Moscow,Russia;3.Geophysical Service,Russian Academy of Sciences,Obninsk,Russia |
| Abstract: | A method for point estimation of coseismic volume deformation from amplitudes of earthquake-induced jumps in the water level and from the tidal sensitivity of the water level is presented. Application of this method is illustrated by six Kamchatka earthquakes of 1997–2004 with M w = 6.2–7.8 that occurred 128–316 km from the YuZ-5 well. Estimates of coseismic deformation provided by the level gage observations and by the model agree in amplitude and sign. The model reproduces an extended dislocation source in a homogeneous elastic isotropic half-space. Source rupture parameters correspond to focal mechanisms from the CMT international catalog. Consistence in experimental and theoretical estimates of the volume coseismic deformation indicates the high strain-resistance properties of YuZ-5 borehole and the possibility of quantitative estimation of seismotectonic deformation from high-precision water level measurements with time resolution not lower than 10 minutes. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |