项目名称: 井地重磁数据三维联合快速反演研究
项目编号: No.41304101
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 天文学、地球科学
项目作者: 陈召曦
作者单位: 中国地质大学(北京)
项目金额: 25万元
中文摘要: 针对危机矿山接替资源"攻深找盲"以及三维地质填图的需要,本课题将开展井三分量磁测与地面重磁数据三维联合反演的相关问题研究及加速计算工作。其中包括:深化针对不规则数据和起伏地形的地面重磁数据单参量三维反演研究;深入开展井三分量磁测与地面重磁数据三维联合反演研究,寻找联合加权因子的最佳耦合方式;简化反演约束条件的选择;发展基于曲波变换的重磁数据多尺度匹配反演算法,对比分析小波变换与曲波变换多尺度反演效果;开发基于GPU平台的并行反演程序,加速海量重磁数据的三维反演计算,应用模型数据和实际数据对反演技术进行测试分析。通过上述研究,推动重磁联合反演在矿产资源尺度下的高精度快速计算,辅助建立地球物理模型,完善地球物理勘探在圈定深部找矿靶区和刻画精细深部结构的作用。
中文关键词: 井三分量;重磁数据;起伏地形;联合反演;GPU
英文摘要: To satisfy the needs of deep and blind prospecting in crisis mines as well as three dimensional geological mapping, we perform the research on the 3D joint inversion of three-component borehole magnetic and ground gravity-magnetic data and its accelerating strategies. Firstly, we will deepen the single parametric 3D inversion of gravity and magnetic data for irregular data and undulating terrain of the ground, and carry out the study of the 3D joint inversion of three-component borehole magnetic and ground gravity-magnetic data, searching for the best choice of the joint weighting factors, and simplifying the selection of inversion constraints. Secondly, we will develop multi-scale inversion based on curvelet transform and compare it with wavelet transform. Finally, we will transform the inversion algorithm into GPU platform, accelerating 3D inversion for the large-scale and massive data. Through the above research, we will promote the rapid and high-precision calculation of gravity and magnetic data in mineral resources, facilitate the establishment of geophysical models, and perfect geophysical exploration the role of the delineation of deep prospecting targets.
英文关键词: 3-component borehole data;gravity and magnetic data;rugged terrain;joint inversion;GPU