项目名称: 任意三维密度分布地质体重力场及重力梯度张量快速正演方法研究
项目编号: No.41404106
项目类型: 青年科学基金项目
立项/批准年度: 2015
项目学科: 天文学、地球科学
项目作者: 陈龙伟
作者单位: 中南大学
项目金额: 18万元
中文摘要: 重力异常和重力梯度张量三维物性反演、人机交互建模是目前重力勘探领域研究的重点。高效、高精度正演算法是实现三维物性反演和人机交互建模的基础。本课题针对三维物性反演和人机交互建模对正演计算的需求,研究任意三维密度分布条件下重力场和重力梯度张量正演问题。在前期工作基础上,重点研究空间域三维离散卷积快速计算新方法、边界处场的计算方法和正演算法并行化。课题预期研究目标是形成一套新的正演计算方法体系,研发出高效、高精度正演算法,解决任意三维密度分布条件下重力场和重力梯度张量快速正演问题。预期研究成果具有重要的理论价值和应用价值。
中文关键词: 重力场;重力梯度张量;正演;卷积;
英文摘要: Three-dimensional inversion and human-computer interactive modeling for gravity anomaly and gravity gradient tensor is now the key research content in gravity prospecting. Efficient and accurate forward modeling algorithm is foundation for three-dimensional inversion and interactive modeling. According to the requirement of three-dimensional inversion and interactive modeling, this project is aimed at resolving the problem of fast computation of gravity and gravity gradient tensor with arbitrary density distribution. Based on the previous work, this project will further study fast computing method for three-dimensional discrete convolution, computation of gravity on the boundary and parallel computing algorithm design. The goal of this project is to put forward to a new methodology for forward modeling and give an efficient and accurate algorithm that resolves the forward modeling problem in the condition of arbitrary density distribution. The anticipated achievement will be valuable both in theory and application.
英文关键词: Gravity fields;Gravity gradient tensor;Forward modeling;convolution;