直接反演多层密度界面的方法研究
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摘要
以二维密度界面反演为例,提出一种空间域直接反演多层密度界面的方法:由地震等资料构造分层界面模型与参数控制,运用光滑约束压缩解空间,使各层界面对应于某一优势频率范围,用遗传算法搜索全局最优解。通过理论模型和实际模型的反演说明了该方法的有效性。
This paper is proposes a new method for inversing the multi-layer density interfaces directly,the novel approach is based on the smooth constraining of density distribution.The purposes of the study are to compress the entire solution space and to lighten the image quality of the inversion result.The results of the theoretical model and field section show that this method is effective and can obtain a better geological interpretation than tradition ones.
This paper is proposes a new method for inversing the multi-layer density interfaces directly,the novel approach is based on the smooth constraining of density distribution.The purposes of the study are to compress the entire solution space and to lighten the image quality of the inversion result.The results of the theoretical model and field section show that this method is effective and can obtain a better geological interpretation than tradition ones.
引文
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3 Chen Shi,Zhang Jian and Shi Yaolin.Gravity inversion u-sing the frequency characteristics of the density distribution[J].Applied Geophysics,2008,5(2):99-106.
4姚长利,郝天珧,管志宁.重磁反演约束条件及三维物性反演技术策略[J].物探与化探,2002,26(4):253-257.(Yao Changli,Hao Tianyao and Guan Zhining.Restrictionsin gravity and magnetic inversions and technical strategy of 3D properties inversion[J].Geophysical&Geochemical Ex-ploration,2002,26(4):253-257)
5金其年.Tikhonov正则化的饱和性与逆结果及后验参数选取[J].中国科学(A辑),1999,29(8):715-723.(JinQinian.Saturation and inverse-results of Tikhonov regulari-zation and selection of posteriori parameter[J].Science InChina(Series A),1999,29(8):715-723)
6杨光亮,等.类乌齐-玉树-玛多剖面重力异常研究[J].大地测量与地球动力学,2011,(5):1-4.(Yang Guangli-ang,et al.Study on gravity anomaly of profile riwoqe-yushu-maduo[J].Journal of Geodesy and Geodynamics,2011,(5):1-4)
7 Yang Guangliang,et al.Joint inversion of gravity and seimicdata along a profile across the seimogenic fault of 2010Yushu Ms7.1 earthquake[J].Geodesy and Geodynamics,2011,2(4):21-27.Doi:10.3724/SP.J.1246.2011.00021.
8王谦身,安玉林.青藏高原东部玛多-沙马地区的重力场与深部构造[J].地球物理学进展,2001,16(4):4-10.(Wang Qianshen and An Yulin.Gravity field and deepstructure of Maduo-Shama region in eastern Qinghai-Xizang(Tibetan)Plateau[J].Progress of Geophysics,2001,16(4):4-10.)
2姚长利,等.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.(Yao Changli,et al.High-speed computation and efficientstorage in 3-D gravity and magnetic inversion based on genet-ic algorithms[J].Chinese Journal of Geophysics,2003,46(2):252-258)
3 Chen Shi,Zhang Jian and Shi Yaolin.Gravity inversion u-sing the frequency characteristics of the density distribution[J].Applied Geophysics,2008,5(2):99-106.
4姚长利,郝天珧,管志宁.重磁反演约束条件及三维物性反演技术策略[J].物探与化探,2002,26(4):253-257.(Yao Changli,Hao Tianyao and Guan Zhining.Restrictionsin gravity and magnetic inversions and technical strategy of 3D properties inversion[J].Geophysical&Geochemical Ex-ploration,2002,26(4):253-257)
5金其年.Tikhonov正则化的饱和性与逆结果及后验参数选取[J].中国科学(A辑),1999,29(8):715-723.(JinQinian.Saturation and inverse-results of Tikhonov regulari-zation and selection of posteriori parameter[J].Science InChina(Series A),1999,29(8):715-723)
6杨光亮,等.类乌齐-玉树-玛多剖面重力异常研究[J].大地测量与地球动力学,2011,(5):1-4.(Yang Guangli-ang,et al.Study on gravity anomaly of profile riwoqe-yushu-maduo[J].Journal of Geodesy and Geodynamics,2011,(5):1-4)
7 Yang Guangliang,et al.Joint inversion of gravity and seimicdata along a profile across the seimogenic fault of 2010Yushu Ms7.1 earthquake[J].Geodesy and Geodynamics,2011,2(4):21-27.Doi:10.3724/SP.J.1246.2011.00021.
8王谦身,安玉林.青藏高原东部玛多-沙马地区的重力场与深部构造[J].地球物理学进展,2001,16(4):4-10.(Wang Qianshen and An Yulin.Gravity field and deepstructure of Maduo-Shama region in eastern Qinghai-Xizang(Tibetan)Plateau[J].Progress of Geophysics,2001,16(4):4-10.)
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