关键词: 华北, 低速层, 地震, 构造, 地热

Abstract: According to the features of deep seismic sounding records and the velocity structures in the crust, the Q-value structures as well as other geophysical data in North China, This paper gives an illustration on the existance of low velocity layer; research has been made on the formation of the low velocity layer along with some geological phenomenon related to the low velocity layer such as tectonic movement, earthquake hypercenter distribution and geothermal anomaly.

Key words: North China, Low velocity layer, Earthquake, Structure, Geotherm