Exploring Moho sharpness in Northeastern North China Craton with frequency-dependence analysis of Ps receiver function

Ping Zhang, University of Science and Technology of China, Hefei, China, Huajian Yao, USTC University of Science and Technology of China, Hefei, China, Ling Chen, CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China, Xu WANG, Institute of Geology and Geophysics, CAS, Beijing, China and Lihua Fang, IGP Institute of Geophysics, China Earthquake Administration, Beijing, China