Regional variation in Moho depth and Poisson”s ratio beneath eastern China and its tectonic implications
We conducted H-κ stacking of receiver functions using teleseismic data collected from 1196 broadband stations and produced a unified and detailed map of Moho depth and average Poisson”s ratio (σ) of eastern China.A coexistence of modified and preserved crust with generally in Airy-type isostatic equilibrium was revealed in eastern China,which correlates well with regional geological and tectonic features.Crust is obviously thicker to the west of the North-South Gravity Lineament but exhibits complex variations in σ with an overall felsic to intermediate bulk crustal composition.Moho depth and σ values show striking differences as compared to the surrounding areas in the rifts and tectonic boundary zones,where earthquakes usually occur.
危自根 陈凌 李志伟 凌媛 李静
中国科学院测量与地球物理研究所 武汉 430077 中国科学院地质与地球物理研究所 北京 100029
国内会议
北京
英文
17-17
2015-10-11（万方平台首次上网日期，不代表论文的发表时间）