Lithospheric deformation due to the 2015 M7.2 Sarez (Pamir) earthquake
constrained by 5 years of space geodetic observations
Abstract
Key Points: • We present geodetic observations of coseismic and
postseismic deformation due to the 2015 M w 7.2 Sarez (Pamir)
earthquake. • Near-field postseismic deformation is dominated by shallow
afterslip and possibly poroelastic relaxation at the NE end of the
earthquake rupture. • Data do not show a clear signal expected of
viscoelastic relaxation, indicating effective viscosity of the lower
crust > 10 19 Pa s. • We investigate triggering
relationships between the M7.2 earthquake and a pair of M6+ events that
occurred within 1 year and 100 km of the mainshock.