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Swarm intelligence optimization and its application in geophysical data inversion 被引量:30
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作者 Yuan Sanyi Wang Shangxu Tian Nan 《Applied Geophysics》 SCIE CSCD 2009年第2期166-174,共9页
The inversions of complex geophysical data always solve multi-parameter, nonlinear, and multimodal optimization problems. Searching for the optimal inversion solutions is similar to the social behavior observed in swa... The inversions of complex geophysical data always solve multi-parameter, nonlinear, and multimodal optimization problems. Searching for the optimal inversion solutions is similar to the social behavior observed in swarms such as birds and ants when searching for food. In this article, first the particle swarm optimization algorithm was described in detail, and ant colony algorithm improved. Then the methods were applied to three different kinds of geophysical inversion problems: (1) a linear problem which is sensitive to noise, (2) a synchronous inversion of linear and nonlinear problems, and (3) a nonlinear problem. The results validate their feasibility and efficiency. Compared with the conventional genetic algorithm and simulated annealing, they have the advantages of higher convergence speed and accuracy. Compared with the quasi-Newton method and Levenberg-Marquardt method, they work better with the ability to overcome the locally optimal solutions. 展开更多
关键词 Swarm intelligence optimization geophysical inversion MULTIMODAL particle swarm optimization algorithm
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3-D geochemical interpolation guided by geophysical inversion models
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作者 Tom Horrocks Eun-Jung Holden +1 位作者 Daniel Wedge ChrisWijns 《Geoscience Frontiers》 SCIE CAS CSCD 2021年第3期132-145,共14页
3-D geochemical subsurface models,as constructed by spatial interpolation of drill-core assays,are valuable assets across multiple stages of the mineral industry's workflow.However,the accuracy of such models is l... 3-D geochemical subsurface models,as constructed by spatial interpolation of drill-core assays,are valuable assets across multiple stages of the mineral industry's workflow.However,the accuracy of such models is limited by the spatial sparsity of the underlying drill-core,which samples only a small fraction of the subsurface.This limitation can be alleviated by integrating collocated 3-D models into the interpolation process,such as the 3-D rock property models produced by modern geophysical inversion procedures,provided that they are sufficiently resolved and correlated with the interpolation target.While standard machine learning algorithms are capable of predicting the target property given these data,incorporating spatial autocorrelation and anisotropy in these models is often not possible.We propose a Gaussian process regression model for 3-D geochemical interpolation,where custom kernels are introduced to integrate collocated 3-D rock property models while addressing the trade-off between the spatial proximity of drill-cores and the similarities in their collocated rock properties,as well as the relative degree to which each supporting 3-D model contributes to interpolation.The proposed model was evaluated for 3-D modelling of Mg content in the Kevitsa Ni-Cu-PGE deposit based on drill-core analyses and four 3-D geophysical inversion models.Incorporating the inversion models improved the regression model's likelihood(relative to a purely spatial Gaussian process regression model)when evaluated at held-out test holes,but only for moderate spatial scales(100 m). 展开更多
关键词 Machine learning Gaussian process regression KRIGING geophysical inversion INTERPOLATION
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The Application of Joint Inversion in Geophysical Exploration
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作者 ákos Gyulai Mátyás Krisztián Baracza éva Eszter Tolnai 《International Journal of Geosciences》 2013年第2期283-289,共7页
The paper presents a short overview about the application of joint inversion in geophysics. It gives also an alternative explanation for the term of “different data sets” and discusses what types of inversion proced... The paper presents a short overview about the application of joint inversion in geophysics. It gives also an alternative explanation for the term of “different data sets” and discusses what types of inversion procedures can be considered as joint inversion. Nowadays there are no standard standpoints using the appellation joint inversion. What is joint inversion? Based on the information matrix an answer could be given for this question what could be regarded as various types of data sets that are inverted simultaneously. We would like to expand the explanation—that is professed by many researchers—of the method that regards only the simultaneous inversion of data sets based on different physical parameters as joint inversion. 展开更多
关键词 JOINT inversION SIMULTANEOUS inversION geophysical SERIOUS EXPANSION
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Effect of regularization parameters on geophysical reconstruction
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作者 Zhou Hui Wang Zhaolei +2 位作者 Qiu Dongling Li Guofa Shen Jinsong 《Petroleum Science》 SCIE CAS CSCD 2009年第2期119-126,共8页
In this paper we discuss the edge-preserving regularization method in the reconstruction of physical parameters from geophysical data such as seismic and ground-penetrating radar data. In the regularization method a p... In this paper we discuss the edge-preserving regularization method in the reconstruction of physical parameters from geophysical data such as seismic and ground-penetrating radar data. In the regularization method a potential function of model parameters and its corresponding functions are introduced. This method is stable and able to preserve boundaries, and protect resolution. The effect of regularization depends to a great extent on the suitable choice of regularization parameters. The influence of the edge-preserving parameters on the reconstruction results is investigated and the relationship between the regularization parameters and the error of data is described. 展开更多
关键词 geophysical data inversION error of data REGULARIZATION regularization parameters
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Metallogenic model of the Shuangjianzishan Ag-Pb-Zn district,Northeast China:Revealed from integrated geophysical investigation
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作者 Yihao Wu Jiangtao Han +9 位作者 Yunhe Liu Guoqing Ma Fuxing Han Yanchen Yang Lijia Liu Lei Guo Ye Guan Yinghui Zhang Zhenyu Guo Qian Mu 《Geoscience Frontiers》 SCIE CAS CSCD 2022年第2期110-124,共15页
The Shuangjianzishan deposit in Inner Mongolia is a typical Ag-Pb-Zn deposit of the southern Great Xing’an Range.Proven reserves of Ag,Pb,and Zn in this deposit have reached the scale of super-large deposits,with fav... The Shuangjianzishan deposit in Inner Mongolia is a typical Ag-Pb-Zn deposit of the southern Great Xing’an Range.Proven reserves of Ag,Pb,and Zn in this deposit have reached the scale of super-large deposits,with favorable metallogenic conditions,strong prospecting signs,and high metallogenic potential.This paper reports a study involving integrated geophysical methods,including controlled-source audio-frequency magnetotelluric,gravity,magnetic,and shallow-seismic-reflection methods,to determine the spatial distribution of ore-controlling structures and subsurface intrusive rock for a depth range of<2000 m in the Shuangjianzishan ore district.The objective of this study is to construct a metallogenic model of the ore district and provide a scientific basis for the exploration of similar deposits in the deep and surrounding regions.We used three-dimensional inversion for controlled-source audio-frequency magnetotelluric data based on the limited memory quasi-Newton algorithm,and three-dimensional physical-property inversion for the gravity and magnetic data to obtain information about the subsurface distribution of ore-controlling structures and intrusive rocks.Under seismic reflection results,regional geology,petrophysical properties,and borehole information,the geophysical investigation shows that the Dashizhai group,which contains the main ore-bearing strata in the ore district,is distributed within a depth range of<1239 m,and is thick in the Xinglongshan ore block and the eastern part of the Shuangjianzishan ore block.The mineralization is spatially associated with a fault system characterized by NE-,NW-,and N-trending faults.The magnetic and electrical models identify large,deep bodies of intrusive rock that are inferred to have been involved in mineralization,with local shallow emplacement of some intrusions.Combining the subsurface spatial distributions of ore-bearing strata,ore-controlling faults,and intrusive rock,we propose two different metallogenic models for the Shuangjianzishan ore district,which provide a scientific basis for further prospecting in the deep regions of the ore district and surrounding areas. 展开更多
关键词 Ag-Pb-Zn deposit Integrated geophysical investigation 3D geophysical inversion Metallogenic model Shuangjianzishan in Inner Mongolia
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A Differential Continuation-Regularization Method for Solving Inverse Problems of Acoustic Wave Equations
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作者 张大力 韩波 +1 位作者 刘家琦 姜立功 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1995年第1期10-14,共5页
ADifferentialContinuation-RegularizationMethodforSolvingInverseProblemsofAcousticWaveEquations¥(张大力)(韩波)(刘家琦... ADifferentialContinuation-RegularizationMethodforSolvingInverseProblemsofAcousticWaveEquations¥(张大力)(韩波)(刘家琦)(姜立功)ZHANGDali;H... 展开更多
关键词 ss:inverse problems geophysical prospecting DIFFERENTIAL CONTINUATION method ACOUSTIC WAVE equation REGULARIZATION
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Linearized waveform inversion for vertical transversely isotropic elastic media:Methodology and multi-parameter crosstalk analysis
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作者 Ke Chen Lu Liu +5 位作者 Li-Nan Xu Fei Hu Yuan Yang Jia-Hui Zuo Le-Le Zhang Yang Zhao 《Petroleum Science》 SCIE EI CAS CSCD 2024年第1期252-271,共20页
Seismic migration and inversion are closely related techniques to portray subsurface images and identify hydrocarbon reservoirs.Seismic migration aims at obtaining structural images of subsurface geologic discontinuit... Seismic migration and inversion are closely related techniques to portray subsurface images and identify hydrocarbon reservoirs.Seismic migration aims at obtaining structural images of subsurface geologic discontinuities.More specifically,seismic migration estimates the reflectivity function(stacked average reflectivity or pre-stack angle-dependent reflectivity)from seismic reflection data.On the other hand,seismic inversion quantitatively estimates the intrinsic rock properties of subsurface formulations.Such seismic inversion methods are applicable to detect hydrocarbon reservoirs that may exhibit lateral variations in the inverted parameters.Although there exist many differences,pre-stack seismic migration is similar with the first iteration of the general linearized seismic inversion.Usually,seismic migration and inversion techniques assume an acoustic or isotropic elastic medium.Unconventional reservoirs such as shale and tight sand formation have notable anisotropic property.We present a linearized waveform inversion(LWI)scheme for weakly anisotropic elastic media with vertical transversely isotropic(VTI)symmetry.It is based on two-way anisotropic elastic wave equation and simultaneously inverts for the localized perturbations(ΔVp_(0)/Vp_(0)/Vs_(0)/Vs_(0)/,Δ∈,Δδ)from the long-wavelength reference model.Our proposed VTI-elastic LWI is an iterative method that requires a forward and an adjoint operator acting on vectors in each iteration.We derive the forward Born approximation operator by perturbation theory and adjoint operator via adjoint-state method.The inversion has improved the quality of the images and reduces the multi-parameter crosstalk comparing with the adjoint-based images.We have observed that the multi-parameter crosstalk problem is more prominent in the inversion images for Thomsen anisotropy parameters.Especially,the Thomsen parameter is the most difficult to resolve.We also analyze the multi-parameter crosstalk using scattering radiation patterns.The linearized waveform inversion for VTI-elastic media presented in this article provides quantitative information of the rock properties that has the potential to help identify hydrocarbon reservoirs. 展开更多
关键词 ELASTIC ANISOTROPY Least-squares imaging Waveform inversion Computational geophysics
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3D electrical resistivity inversion using prior spatial shape constraints 被引量:8
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作者 李术才 聂利超 +4 位作者 刘斌 宋杰 刘征宇 苏茂鑫 徐磊 《Applied Geophysics》 SCIE CSCD 2013年第4期361-372,510,共13页
To minimize the number of solutions in 3D resistivity inversion, an inherent problem in inversion, the amount of data considered have to be large and prior constraints need to be applied. Geological and geophysical da... To minimize the number of solutions in 3D resistivity inversion, an inherent problem in inversion, the amount of data considered have to be large and prior constraints need to be applied. Geological and geophysical data regarding the extent of a geological anomaly are important prior information. We propose the use of shape constraints in 3D electrical resistivity inversion, Three weighted orthogonal vectors (a normal and two tangent vectors) were used to control the resistivity differences at the boundaries of the anomaly. The spatial shape of the anomaly and the constraints on the boundaries of the anomaly are thus established. We incorporated the spatial shape constraints in the objective function of the 3D resistivity inversion and constructed the 3D resistivity inversion equation with spatial shape constraints. Subsequently, we used numerical modeling based on prior spatial shape data to constrain the direction vectors and weights of the 3D resistivity inversion. We established a reasonable range between the direction vectors and weights, and verified the feasibility and effectiveness of using spatial shape prior constraints in reducing excessive structures and the number of solutions. We applied the prior spatially shape-constrained inversion method to locate the aquifer at the Guangzhou subway. The spatial shape constraints were taken from ground penetrating radar data. The inversion results for the location and shape of the aquifer agree well with drilling data, and the number of inversion solutions is significantly reduced. 展开更多
关键词 electrical resistivity inversION prior spatial constraints direction vector geophysICS geotechnical engineering.
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中国石化油藏地球物理二十年发展与思考 被引量:2
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作者 李阳 王延光 +2 位作者 刘浩杰 陈雨茂 薛兆杰 《石油物探》 CSCD 北大核心 2024年第1期1-11,共11页
油藏地球物理技术是综合应用多种地球物理资料与油藏动静态信息进行复杂油藏精细表征和动态监测的跨学科技术,对于提高油藏的储量动用程度和提高采收率具有重要的意义,是当前地球物理技术的重要发展方向。系统回顾了中国石化油藏地球物... 油藏地球物理技术是综合应用多种地球物理资料与油藏动静态信息进行复杂油藏精细表征和动态监测的跨学科技术,对于提高油藏的储量动用程度和提高采收率具有重要的意义,是当前地球物理技术的重要发展方向。系统回顾了中国石化油藏地球物理提出的背景和过去二十年的发展历程,梳理了油藏地球物理技术系列,总结了在油藏地球物理基础研究、井中地球物理技术、多尺度资料联合反演、地球物理约束确定性建模、时移地震剩余油气预测、地震地质工程一体化、微地震油藏监测等方面的技术创新和应用效果。面对中国油气田勘探开发的深层、深水、非常规及老油田(“两深一非一老”)形势和一体化、智能化、绿色化挑战,油藏地球物理在油气产业技术致胜阶段仍然大有可为,要持续创新油藏地球物理技术,井、震、动、模一体化联合和人工智能应用,构建高水平的油藏地球物理勘探开发一体化、地质工程一体化解决方案,支撑油藏全生命周期建设。 展开更多
关键词 油藏地球物理 井中地震 联合反演 油藏建模 油藏动态监测 剩余油预测 地震地质工程一体化
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基于2.5D有限元的高密度电法不同装置勘探效果研究 被引量:1
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作者 赵荣春 吕玉增 +2 位作者 张智 韦柳椰 潘泓序 《煤田地质与勘探》 EI CAS CSCD 北大核心 2024年第4期128-136,共9页
高密度电法是一种适用性广泛的电阻率勘探方法,拥有多种电极排列装置选择。不同装置由于电极分布方式的差异,在针对不同地质目标和测区环境时往往表现出明显不同的探测能力。为探究各排列装置的特点及其适用情况,推导了2.5D电位的变分问... 高密度电法是一种适用性广泛的电阻率勘探方法,拥有多种电极排列装置选择。不同装置由于电极分布方式的差异,在针对不同地质目标和测区环境时往往表现出明显不同的探测能力。为探究各排列装置的特点及其适用情况,推导了2.5D电位的变分问题,采用Delaunay三角化算法实现了非结构化网格剖分,进而实现了有限元正演模拟。结合实践,对常见地质情况进行建模,分别使用温纳α、温纳β、施伦贝谢尔、偶极-偶极4种装置开展正反演对比研究。研究发现:(1)在探测未知区域单个异常体时,温纳β、施伦贝谢尔2种排列的效果更好;(2)在探测相邻较近的多个异常体时,应优先采用具有更高水平分辨率的施伦贝谢尔和偶极-偶极排列;(3)对于低阻破碎带的勘探,温纳β和偶极-偶极排列更为适用;(4)当地层具有较好分层界限时,4种排列均可体现良好的分层效果。因此,高密度电法勘探实践中应综合考虑不同排列装置的特点,根据具体情况选用合适的多种排列方式进行测量,并对采集数据进行综合对比分析,以获得更为准确的解释结果。 展开更多
关键词 高密度电法 非结构化网格 有限单元法 排列装置 正反演计算 电阻率
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量子计算在地球物理学中的应用 被引量:2
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作者 王思琳 刘财 +1 位作者 李鹏 赵鹏飞 《石油地球物理勘探》 EI CSCD 北大核心 2024年第2期352-367,共16页
量子计算具有强大的计算能力,被视为一种可能对未来产生颠覆性影响的计算方法,可为多种复杂计算问题的求解提供新思路,目前已在多学科或领域实践与应用。近年来,量子计算逐步应用于地球物理研究,多种量子算法及量子计算机的应用为揭示... 量子计算具有强大的计算能力,被视为一种可能对未来产生颠覆性影响的计算方法,可为多种复杂计算问题的求解提供新思路,目前已在多学科或领域实践与应用。近年来,量子计算逐步应用于地球物理研究,多种量子算法及量子计算机的应用为揭示地球内部构造、探测深部资源等提供了技术支持。量子计算具备高效求解科学问题的能力,在地球物理领域具有巨大的应用潜力。为此,系统分析、阐述量子计算原理并总结了量子算法的发展现状,对其在地球物理数据采集、波场模拟、反问题求解等领域的成果进行归纳、分析;通过建立理论模型并进行反演,验证了量子算法的优越性;最后展望了量子计算未来可能的研究方向。 展开更多
关键词 量子计算 量子力学 量子优化算法 全局寻优 地球物理反演
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机器学习在地球物理勘探中铀矿资源勘查的应用研究进展 被引量:2
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作者 韩世礼 肖健 柳位 《铀矿地质》 CAS CSCD 2024年第3期555-564,共10页
机器学习有自动性、高准确性、可扩展性等优势,适用于大数据处理和自适应任务。在地球物理勘探中运用,可大幅提高勘探效率和准确性,促进技术进步,实现地球物理向智能化解译的发展。文章首先介绍了机器学习在地球物理领域的常用先进方法... 机器学习有自动性、高准确性、可扩展性等优势,适用于大数据处理和自适应任务。在地球物理勘探中运用,可大幅提高勘探效率和准确性,促进技术进步,实现地球物理向智能化解译的发展。文章首先介绍了机器学习在地球物理领域的常用先进方法,如深度学习、深度神经网络、BP神经网络、支持向量机和随机森林的基本原理和分类特点。其次介绍了放射性勘探、地球物理测井、成矿预测和联合反演的基本原理,同时对前人在机器学习应用到这4方面地球物理领域的实际应用进行综合分析,结果表明,机器学习在这4个领域中的应用均取得了显著的效果。通过机器学习技术的应用,地球物理勘探能够取得更加全面、精准和高效的成果,同时也能推动这项技术的不断进步。 展开更多
关键词 机器学习 放射性勘探 地球物理测井 成矿预测 联合反演
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Sensitivity of Marine Controllable Source Electromagnetic Soundings for Identifying Plume Migration in Offshore CO_(2) Storage
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作者 Ning Qiu Chunwu Pan +3 位作者 Yongheng Zhang Bin Liu Zhen Sun Pengchun Li 《哈尔滨工程大学学报(英文版)》 CSCD 2024年第3期656-673,共18页
Offshore carbon dioxide(CO_(2)) storage is an effective method for reducing greenhouse gas emissions. However, when using traditional seismic wave methods to monitor the migration of sequestration CO_(2) plumes, the c... Offshore carbon dioxide(CO_(2)) storage is an effective method for reducing greenhouse gas emissions. However, when using traditional seismic wave methods to monitor the migration of sequestration CO_(2) plumes, the characteristics of wave velocity changes tend to become insignificant beyond a certain limit. In contrast, the controllable source electromagnetic method(CSEM) remains highly sensitive to resistivity changes. By simulating different CO_(2) plume migration conditions, we established the relevant models and calculated the corresponding electric field response characteristic curves, allowing us to analyze the CSEM's ability to monitor CO_(2) plumes. We considered potential scenarios for the migration and diffusion of offshore CO_(2) storage, including various burial depths, vertical extension diffusion, lateral extension diffusion,multiple combinations of lateral intervals, and electric field components. We also obtained differences in resistivity inversion imaging obtained by CSEM to evaluate its feasibility in monitoring and to analyze all the electric field(Ex, Ey, and Ez) response characteristics. CSEM has great potential in monitoring CO_(2) plume migration in offshore saltwater reservoirs due to its high sensitivity and accuracy. Furthermore, changes in electromagnetic field response reflect the transport status of CO_(2) plumes, providing an important basis for monitoring and evaluating CO_(2)transport behavior during storage processes. 展开更多
关键词 Offshore carbon dioxide storage geophysics Resistivity inversion Monitoring Plume migration Marine controllable source electromagnetic method
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大地电磁探测技术在旭龙水电站隐蔽构造勘察中的应用 被引量:1
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作者 郭聪 徐涛 陈江平 《水利水电快报》 2024年第5期36-42,共7页
旭龙水电站前期工程勘察中面临坝库区高陡边坡、滑坡体及超厚覆盖层等复杂地质条件,准确查明该区域的隐蔽构造、裂缝、断层及覆盖层厚度十分关键。引入新型大地电磁测深探测系统,并基于优化改进二维快速松弛反演(RRI)算法,得到了收敛快... 旭龙水电站前期工程勘察中面临坝库区高陡边坡、滑坡体及超厚覆盖层等复杂地质条件,准确查明该区域的隐蔽构造、裂缝、断层及覆盖层厚度十分关键。引入新型大地电磁测深探测系统,并基于优化改进二维快速松弛反演(RRI)算法,得到了收敛快、曲线平滑的大地电磁测深剖面,提取了丰富的深部地层信息。结果表明:采用低频磁棒、改进的RRI反演算法,有效数据频带延伸到1~0.1 Hz,有效探测深度近1000 m。该技术在超厚覆盖层及深部构造探测中获得了较好的应用效果,克服了旭龙水电站前期勘察技术难点,可为新型大地电磁系统在类似工程的应用提供参考。 展开更多
关键词 地球物理勘察 大地电磁法 二维RRI反演 隐蔽构造 旭龙水电站
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利用改进藤壶交配算法反演重力倾斜断层模型参数
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作者 艾寒冰 李红星 陈昊 《石油物探》 CSCD 北大核心 2024年第2期487-502,共16页
针对重力勘探中倾斜断层模型密度参数与几何参数的获取,提出了改进藤壶交配算法。传统藤壶交配算法的寻优过程与定量模拟藤壶特殊交配繁殖特征密不可分,但其受制于关键参数(生殖器长度p l)的选取、种群进化方式多样性以及当藤壶位置超... 针对重力勘探中倾斜断层模型密度参数与几何参数的获取,提出了改进藤壶交配算法。传统藤壶交配算法的寻优过程与定量模拟藤壶特殊交配繁殖特征密不可分,但其受制于关键参数(生殖器长度p l)的选取、种群进化方式多样性以及当藤壶位置超出搜索解空间时处理方式的影响。故提出一种结合变生殖器长度pl(va)r,新型藤壶子代更新和越界校正策略的改进藤壶交配算法。通过理论无噪声重力异常研究了藤壶生殖器长度p l对于传统藤壶交配算法的影响,验证了采用pl(va)r策略的有效性以及改进藤壶交配算法的优越性。进一步利用合成无噪声重力异常、含不同噪声比例(10%和30%)重力异常和埃及Gazelle断层实际数据反演对比了藤壶交配算法、改进藤壶交配算法和粒子群算法获取相关参数的可行性、准确性、稳定性和实用性。处理结果表明,改进藤壶交配算法相较于藤壶交配算法和粒子群算法而言具有更小的拟合误差、更准确的模型参数以及更高的稳定性,具有推广至解决其它地球物理反演问题的潜力。 展开更多
关键词 地球物理反演 重力倾斜断层模型 改进藤壶交配算法 粒子群算法
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地球物理反演在地下管线探测中的应用
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作者 胡明针 李承瑾 林思婷 《智能建筑与智慧城市》 2024年第12期151-153,共3页
在地下管线探测过程中,地球物理反演方法能够通过地下管线数据反算地下管线水平位置和埋深。文章主要介绍了国内地球物理反演方法在地下管线探测中的应用,并探讨了地下管线反演的发展趋势。
关键词 地下管线 地球物理反演 发展趋势
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胶东招远-平度断裂地球物理异常特征及其控矿条件研究
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作者 许志河 丁正江 +2 位作者 朱成 庞森瑞 范潍箐 《地质与勘探》 CAS CSCD 北大核心 2024年第4期776-784,共9页
招远-平度断裂是胶东金矿集区三条超大型控矿断裂(三山岛、焦家及招远-平度断裂)之一。受地表第四系覆盖影响,金矿体空间赋存位置与主断裂及其次级断裂地表出露位置的耦合关系尚存问题。通过开展精细化处理区域重力和航空磁测数据,如空... 招远-平度断裂是胶东金矿集区三条超大型控矿断裂(三山岛、焦家及招远-平度断裂)之一。受地表第四系覆盖影响,金矿体空间赋存位置与主断裂及其次级断裂地表出露位置的耦合关系尚存问题。通过开展精细化处理区域重力和航空磁测数据,如空间域不同高度延拓(100 m、200 m和500 m)及垂向一阶导数等方法,发现招远-平度断裂地表出露位置与深部地球物理梯度带存在位移差,且位移差向断裂倾向方向南东侧移动趋势愈发明显,进一步证明招远-平度断裂深部倾向南东,倾角由浅至深逐渐变缓,局部变化剧烈的地质推论。同时,开展地表高精度1/10000比例尺的重力结果显示,重力异常曲线自西向东整体呈快速上升趋势,局部存在凹陷区,表明花岗质碎裂岩及绢英岩化花岗质碎裂岩密度(2.63 g/cm^(3))介于玲珑二长花岗岩(2.57 g/cm^(3))和古元古界(2.82 g/cm^(3))之间,含矿层位与围岩存在较大密度差,金矿体主要赋存于花岗质碎裂岩及绢英岩化花岗质碎裂岩层位的倾角由陡变缓或由缓变陡的转折部位,可分别发现石英脉型金矿和蚀变岩型金矿。 展开更多
关键词 地球物理 2.5维反演 布格重力异常 剩余重力异常 控矿构造识别 招远-平度断裂 胶东金矿集区
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综合地球物理联合反演综述 被引量:67
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作者 杨辉 戴世坤 +1 位作者 宋海斌 黄临平 《地球物理学进展》 CSCD 2002年第2期262-271,共10页
阐述了综合地球物理研究的必要性、方法学及研究思路 ,指出联合反演是综合地球物理重要的定量解释工具 ,通过回顾联合反演的研究现状与进展 ,指出联合反演的发展方向 .
关键词 综合地球物理 联合反演 综述
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重磁电震联合反演研究进展与展望 被引量:47
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作者 陈洁 温宁 陈邦彦 《地球物理学进展》 CSCD 北大核心 2007年第5期1427-1438,共12页
重磁电震等地球物理勘探成果的联合反演是解决复杂地质问题所用的综合地球物理解释方法,是目前可信的定量的综合地球物理解释技术,是联合应用多种地球物理信息,通过反演地质体的岩石物性和几何参数来求得同一个地下地质和地球物理模型... 重磁电震等地球物理勘探成果的联合反演是解决复杂地质问题所用的综合地球物理解释方法,是目前可信的定量的综合地球物理解释技术,是联合应用多种地球物理信息,通过反演地质体的岩石物性和几何参数来求得同一个地下地质和地球物理模型的技术.本文综述了从上世纪80年代以来,地球物理场联合反演技术取得的长足发展,主要表现在两个方面:一是在地球物理场综合应用基础上,发展了两两地球物理参数之间互为约束的反演的技术,二是是反映了联合反演计算方法的进步,如线性与非线性反演比较、反演方法选择等.综述了联合反演的思路与对策,提出了联合反演的发展方向. 展开更多
关键词 联合反演 综合地球物理解释 约束 反演方法
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地球物理联合反演研究综述 被引量:42
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作者 敬荣中 鲍光淑 陈绍裘 《地球物理学进展》 CSCD 2003年第3期535-540,共6页
 地球物理联合反演由于使反演问题的非唯一性得到有效限制而越来越受到人们的重视.本文概述了联合反演的发展现状及实现的方法,并讨论了其发展趋势及其局限性,指出地球物理联合反演是地球物理数据分析的理想工具,而非线性联合反演方法...  地球物理联合反演由于使反演问题的非唯一性得到有效限制而越来越受到人们的重视.本文概述了联合反演的发展现状及实现的方法,并讨论了其发展趋势及其局限性,指出地球物理联合反演是地球物理数据分析的理想工具,而非线性联合反演方法则是地球物理联合反演发展的方向. 展开更多
关键词 地球物理 联合反演 综述 发展方向
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