基于交叉梯度函数的三维重震联合反演Three-dimensional Joint Inversion of Gravity and Seismic Data Based on Cross Gradient Function
张济东;郑浩;王鸣谦;李阳;
摘要(Abstract):
单一类型地球物理数据的反演会存在多解性,联合反演方法能够有效克服多解性,其在过程的稳定性、模型的成像质量以及后续资料解释等方面都发挥出独特的优势。交叉梯度联合反演方法以其不依赖岩石物性关系的优点,成为研究的热点。本文以重震联合反演为例,详细研究了基于交叉梯度函数的联合反演方法以及反演中存在的相关问题。针对联合反演中不同数据灵敏度矩阵数值和反演系统差异较大的问题,利用更加灵活的反演策略,即分别交替进行数据拟合和交叉梯度结构约束。同时,还提出了正演网格和反演网格相分离的网格划分策略,平衡了计算效率和精度。采用合适的联合反演策略实现了重力数据和地震波初至数据之间的联合反演。通过模型试验表明,算法能够有效减小反演的多解性,提高反演的分辨率。
关键词(KeyWords): 联合反演;重震联合;初至层析
基金项目(Foundation): 科技部国家重点研发计划(编号:2019YFC0604902)
作者(Authors): 张济东;郑浩;王鸣谦;李阳;
参考文献(References):
- [1] Farquharson C G,Ash M R,Miller H G.Geologically constrained gravity inversion for the Voisey’s Bay Ovoid deposit[J].The Leading Edge,2008,27(1):64-69.
- [2] Lelievre P G,Oldenburg D W.A comprehensive study of including structural orientation information in geophysical inversions[J].Geophysical Journal International,2009,178(2):623-637.
- [3] Colombo D,Stefano M D.Geophysical modeling via simultaneous joint inversion of seismic,gravity and electromagnetic data:application to prestack depth imaging[J].The Leading Edge,2007,26(3):326-331.
- [4] Sun J,Li Y,Joint inversion of multiple geophysical data:A petrophysical approach using guided fuzzy c-means clustering[C]//SEG Annual Meeting,Las Vegas,2012.
- [5] Haber E,Oldenburg D.Joint inversion:A structural approach[J].Inverse Problems.1997,13(1):63-77.
- [6] Gallardo L A,Meju M A.Characterization of heterogeneous near-surface materials by joint 2-D inversion of dc resistivity and seismic data[J].Geophysical Research Letters,2003,30(13):183-196.
- [7] Moorkamp M,Heincke B,Jegen M.A framework for 3D joint inversion of MT,gravity and seismic refraction data[J].Geophysical Journal International,2011,184(1):477-493.
- [8] 彭淼,谭捍东,姜枚.基于交叉梯度耦合的大地电磁与地震走时资料三维联合反演[J].地球物理学报,2013,56(8):2 728-2 738.
- [9] 李桐林,张镕哲,朴英哲.部分区域约束下的交叉梯度多重地球物理数据联合反演[J].地球物理学报,2016,59(8):2 979-2 988.
- [10] Um E S,Commer M,Newman G A.A strategy for coupled 3D imaging of large-scale seismic and electromagnetic data sets:Application to subsalt imaging[J].Geophysics,2014.79(3):ID1-ID13.
- [11] Bennington N L,Zhang H J,Thurber C H.Joint inversion of seismic and magnetotelluric data in the Parkfield region of California using the normalized cross-gradient constraint[J].Pure and Applied Geophysics,2015,172(5):1 033-1 052.
- [12] 高级,张海江.基于交叉梯度交替结构约束的二维地震走时与全通道直流电阻率联合反演[J].地球物理学报,2016,59(11):4 310-4 322.
- [13] 高级,张海江,方洪健.一种高效的基于交叉梯度结构约束的三维地震走时与直流电阻率联合反演策略[J].地球物理学报,2017,60(9):3 628-3 641.
- [14] 姚长利,郝天珧,管志宁.重磁遗传算法三维反演中高速计算及有效存储方法技术[J].地球物理学报,2003,46(2):252-258.
- [15] Sethian J A.Fast-marching level-set methods for three-dimensional photolithography development[J].Proc Spie,1996,2726:262-272.
- [16] 宗育泉,彭代诚,刘江平.井间地震层析成像在柳北换流站场地工程勘查中的应用[J].工程地球物理学报,2020,17(1):93-100.
- [17] 张雨飞.井间地震层析成像技术在地铁岩溶勘察中的应用[J].工程地球物理学报,2019,16(5):591-595.·公益广告·