【摘要】 莫霍面深度图的编绘与研究一直都是岩石圈构造研究中的重点内容之一.本文在搜集了我国50年以来有关莫霍面深度研究的各种地球物理调查结果与资料基础上,大量引入近年来各种专项的最新成果,将海陆结合一体.以重力数据为基础,在统一数字化投影基础上,经过完全布格校正、格莱尼改正等步骤,并将图幅内依据构造特征划分成不同的分区.研究中以120条地震测深等剖面数据为控制点来计算各分区的莫霍面平均深度反演参数和开展偏差分析.在对重力数据异常场分离方法及界面反演方法优化的基础上,编绘了中国海陆1∶500万莫霍面深度图.依据地壳性质与莫霍面深度分布特征,划分了梯度带与分区,并对每个分区的莫霍面深度分布特点进行了归纳和总结,并就图幅内莫霍面深度图所反映出的地质内涵及东亚地区的宏观构造格架进行了讨论.更多还原

【Abstract】 The compilation and research on the Moho depth map have always been one of major issues in research on the structure of lithosphere.Based on various geophysical studies of the Moho depth in the past 50 years,we collect latest results from a serious of special investigationsin the recent years,and thus integrate these data of land and sea areas into one body.Based on gravity data,we use data from 120profiles(including seismic sounding profiles)as control points.On the basis of unified digital projection,we deal with gravity data by means of complete Bouguer correction,Glennie correction and other procedures,and make a reasonable regionalization in accordance with the structural characteristics in the scope of the map.Based on the optimization of separation methods of the gravity field and surface inversion methods,we compile the Moho Depth Map(1∶5000000)in the Land and Seas of China.According to the crustal structure and the distribution of the Moho depths,we delineate gradient belts,regionalize the map,summarize the characteristics of the Moho depth in each region and discuss the geological implications and the overall framework of East Asia shown on the Moho depth map.更多还原