在中国大陆科学钻探孔区 (江苏省东海县南部 )进行了系统的地球物理调查 ,包括二维地震测网和专门的地震剖面 ,大地电磁法和位场方法等 .地震调查表明 ,在超高压变质岩出露区上地壳充满了反射体 ,包括倾斜反射体与上拱的反射弧 .本文介绍大陆科学钻探先行研究中地震调查的成果 .根据大陆科学钻探预先导孔的岩芯和测井资料、井旁VSP和数值模拟结果证实 ,高波速的榴辉岩体、破碎断裂带和大型韧性剪切带都可引起倾斜的地震反射 ,而上拱的弧形反射体则是由近似直立的榴辉岩体和其中的破碎带的综合反映 .由于地壳深部广泛分布着经受变质的岩石 ,上述研究结果对标定地壳中的反射地震信号具有一定意义 A systematic geophysical survey was conducted in the Scientific Drilling Pore Zone of China Mainland (south of Donghai County, Jiangsu Province), including two-dimensional seismic survey network and special seismic profiles, the magnetotelluric method and the field method, etc. The seismic survey shows that at UHP The upper crust in the metamorphic rock exposed area is full of reflectors, including the reflex arc of the inclined reflector and the upper arch.This paper presents the results of the seismic survey conducted in the Continental Scientific Drilling Precursor Study.According to the core and well logging data from the Continental Scientific Drilling Pre-pilot Hole, Well-side VSP and numerical simulations confirm that high-velocity eclogite bodies, crushing fractures, and large ductile shear zones can all induce oblique seismic reflections while the arched reflector on the upper arch is composed of approximately erect eclogites Rock mass and the crushing zone in the crust.As a result of the extensive distribution of the metamorphic rocks in the deep crust, the above results have some significance for the calibration of the reflected seismic signals in the crust