Journal
NONLINEAR PROCESSES IN GEOPHYSICS
Volume 23, Issue 6, Pages 467-475Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/npg-23-467-2016
Keywords
-
Categories
Funding
- RFBR [16-05-00097 a]
Ask authors/readers for more resources
Based on the statistical analysis of spatiotemporal distribution of earthquake epicenters and perennial geodetic observation series, new evidence is obtained for the existence of slow strain waves in the Earth. The results of our investigation allow us to identify the dynamics of seismicity along the northern boundary of the Amurian plate as a wave process. Migration of epicenters of weak earthquakes (2 <= M <= 4) is initiated by the east-west propagation of a strain wave front at an average velocity of 1000 km yr(-1). We have found a synchronous quasi-periodic variation of seismicity in equally spaced clusters with spatial periods of 3.5 and 7.26 degrees comparable with the length of slow strain waves. The geodetic observations at GPS sites in proximity to local active faults show that in a number of cases, the GPS site coordinate seasonal variations exhibit a significant phase shift, whereas the time series of these GPS sites differ significantly from a sinusoid. Based on experimental observation data and the developed model of crustal block movement, we have shown that there is one possible interpretation for this fact that the trajectory of GPS station position disturbance is induced by migration of crustal deformation in the form of slow waves.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available