Collaborative Research: Strain Accumulation and release at the Kuril Subduction Zone from Postseismic Observations on the Kuril GPS Array in 2007-2014

Lead PI: Goran Ekstrom , Mikhail G. Kogan

Unit Affiliation: Seismology, Geology and Tectonophysics, Lamont-Doherty Earth Observatory (LDEO)

February 2012 - May 2016
Pacific Ocean
Project Type: Research

DESCRIPTION: The project will work to acquire transient postseismic data from 2007-2014, which will be added to data from the Kuril GPS Array collected in 2006-2010. This data will be used to examine how much strain has been released, and to examine if it is possible to explain postseismic surface deformation with linear viscous mantle or a stress-dependent rheology.


National Science Foundation (NSF)





Steblov, G. M., G. Ekström, M. G. Kogan, J. T. Freymueller, N. F. Vasilenko, M. Nettles, Y. V. Gabsatarov, A. S. Prytkov, D. I. Frolov, and M. N. Kondratyev. "Static displacements and the source model of the largest deep earthquake," Geophys. Res. Lett., v.41, 2014.

Kogan, M. G., N. F. Vasilenko, D. I. Frolov, J. T. Freymueller, G. M. Steblov, A. S. Prytkov, and G. Ekström.. "Rapid postseismic relaxation after the great 2006-2007 Kuril earthquakes from GPS observations in 2007?2011," J. Geophys. Res., v.118, 2013. doi:10.1002/2013JB010104

Steblov, G. M., Ekström, G., Kogan, M. G., Freymueller, J. T., Titkov, N. N., Vasilenko, N. F., Nettles, M., Gabsatarov, Y. V., Prytkov, A. S., Frolov, D. I., Kondratyev, M. N.. "First geodetic observations of a deep earthquake: The 2013 Sea of Okhotsk Mw 8.3, 611 km-deep, event," Geophys. Res. Lett., v.41, 2014. doi:10.1002/2014GL060003

Kogan, M.G., Vasilenko, N.F., Frolov, D.I., Freymueller, J.T., Steblov, G.M., Prytkov, A.S., and Ekstrom. G.. "Rapid postseismic relaxation after the great 2006-2007 Kuril earthquakes from GPS observations in 2007?2011," Journal of Geophysical Research, Solid Earth, v.118, 2013, p. n/a. doi:10.1002/2013JB010104


strain release rheology seismology geology and tectonics global positioning system (gps) mantle strain accumulation seismology data kuril gps array stress


Earth fundamentals