Abstract:In this paper, we calculate receiver functions of body waves under 30 stations in Hubei province, using data from the teleseismic earthquake (2014~2015), obtaining thickness, poisson ratio, and CCP profile (AA′). The results show that: (1) the crust thickness in western Hubei is thicker than in the east; crustal thickness in northwest and southwest Hubei is at about 45~55 km, in the east it is about 30~35 km; (2) the poisson ratio in Hubei province is about 0.23~0.27, which may be related to the moderate rock compositions; (3) the Moho surface looks like “stairs”. In combination with related literature analysis, eclogite phase changes occur below the Earth’s crust in the Wudang mountain area, so that the alternating density phase changes of lower crust delamination causes abrupt changes in western Hubei regional crustal thickness.
HE Kai,DU Ruilin,DONG Yanjun et al. Crustal Structure and Poisson Ratio beneath Hubei Province Derived from Teleseismic Receiver Functions[J]. jgg, 2018, 38(6): 646-649.