Guangdong Provincial Key Laboratory of Earthquke Early Warning and Safety Diagnosis of Major Projects;
Guangdong Earthquake Agency;
Guangzhou 510070;
China;
School of Earth Science and Engineering;
Sun Yat-sen University;
Guangzhou 510070;
China;
CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology;
Guangdong Earthquake Agency;
Guangzhou 510070;
China;
Moho discontinuity; velocity contrast; density con—trast; receiver function; Guangdong province;