Nowadays the wide angle reflection/refraction-the deep-crustal sounding is usually used as a seismic method in the world mainly for Studying rough structure of Moho &its overling beds.

• 目前世界上用地震方法研究地壳结构,通常借助于广角反射或折射,即地震地壳测深方法,研究对象主要是莫霍面及其上覆层的粗略结构。