基于CORONA影像的浅层地层信息定量提取
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摘要
利用解密的美国CORONA卫星影像,在库车冲断褶皱带,开展大面积地表构造调查,获取地区的地表产状.通过建立有理函数模型(rational function model,RFM)校正CORONA影像的全景变形,利用JX-4C数字摄影测量系统进行CORONA影像的立体观测和测量,确定岩层面的高程值,并采用三点法在MATLAB软件中计算岩层的倾角和走向,获取地表产状.通过和野外实测数据对比,测量误差小于3°,满足了构造定量解析的精度要求.应用获取的构造产状结合二维地震反射资料,根据断层相关褶皱原理定量地提取库车地区褶皱和断层的几何学特征.
A surface tectonic survey was performed in a steep and complex region of Kuqa fold-and-thrust belt,South Tianshan Mountain,China,using CORONA satellite imagery declassified by US to obtain surface bedding attitude measurements.A rational function model(RFM) was founded to rectify the panoramic deformation of CORONA imagery.Thus triangular face in the imagery was observed and measured using JX-4C digital photogrammetric system,and its strike and dip of bedding were calculated using MATLAB software based on a three-point method.The measurement error was less than 3° in Qiulitag folding belt where triangular faces obviously developed,compared with the measurement data from field survey.This precision reaches the requirement for quantitative structural interpretation.Projecting the bedding attitudes to seismic reflection profiles may compensate some portions of ambiguous reflection gaps in seismic profiles posed by steep strata,and thus the geometric characteristics of the folds and faults in the Kuqia area were quantitatively extracted based on fault-related folding theories.
A surface tectonic survey was performed in a steep and complex region of Kuqa fold-and-thrust belt,South Tianshan Mountain,China,using CORONA satellite imagery declassified by US to obtain surface bedding attitude measurements.A rational function model(RFM) was founded to rectify the panoramic deformation of CORONA imagery.Thus triangular face in the imagery was observed and measured using JX-4C digital photogrammetric system,and its strike and dip of bedding were calculated using MATLAB software based on a three-point method.The measurement error was less than 3° in Qiulitag folding belt where triangular faces obviously developed,compared with the measurement data from field survey.This precision reaches the requirement for quantitative structural interpretation.Projecting the bedding attitudes to seismic reflection profiles may compensate some portions of ambiguous reflection gaps in seismic profiles posed by steep strata,and thus the geometric characteristics of the folds and faults in the Kuqia area were quantitatively extracted based on fault-related folding theories.
引文
①Ramon Gonzalez.2003.Remote sensing and structural a-nalysis of the southern Tien Shanthrust belt,Aksu and Kasghar are-as,China.
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[1]管树巍,陈宁华,徐峰,等.库车地区秋里塔格褶皱带几何学和运动学特征与油气圈闭[J].石油学报,2003,24(5):30-34.GUAN Shu-wei,CHEN Ning-hua,XU Feng,et al.Prop-erties of geometry and kinematics related to hydrocarbontraps in Qiulitag anticline zone of Kuqa Depression[J].Acta Petrolel Sinic,2003,24(5):30-34.
[2]卢华复,贾东,陈楚铭,等.库车新生代构造性质和变形时间[J].地学前缘,1999,6(4):215-221.LU Hua-fu,JIA Dong,CHEN Chu-ming,et al.Natureand ti ming of the Kuqa cenozoic structures[J].EarthScience Frontiers,1999,6(4):215-221.
[3]汪新,贾承造,杨树锋,等.南天山库车冲断褶皱带构造变形时间-以库车河地区为例[J].地质学报,2002,76(1):55-63.WANG Xin,JIA Cheng-zao,YANG Shu-feng,et al.Theti me of deformation on the Kuqa fold-and-thrust belt inthe Southern Tianshan-based onthe Kuqa River area[J].Acta Geologica Sinica,2002,76(1):55-63.
[4]FU B H,LIN A M,KANO KI,et al.Quaternary fold-ing of the eastern Tian Shan,northwest China[J].Tec-tonophysics,2003(369):79-101.
[5]范湘涛,卢华复,郭华东,等.库车冲断带新构造遥感分析[J].地质论评,2000,46(5):499-506.FAN Xiang-tao,LU Hua-fu,GUO Hua-dong,et al.Neo-tectonic analysis of the Kuqa foreland thrust belt by usingremote sensing data[J].Geology Review,2000,46(5):499-506.
[6]ALTMAIER A,KANYC.Digital surface model generationfrom CORONAsatellite i mages[J].ISPRS Journal of Pho-togrammetry&Remote Sensing,2002,56(4):221-235.
[7]BAYRAMB,BAYRAKTAR H,HELVACI C.Coast-line change detection using CORONA,SPOTand IRS 1Di mages[EB/OL].[2006-09-10].http://www.isprs.org/istanbul2004/c omm7/papers/85.pdf
[8]TAO C V,HU Y.Acomprehensive study of the ration-al function model for photogrammetric processing[J].Photogrammetric Engineering&Remote Sensing,2001,67(12):1347-1357.
[9]TATORB A.Photointerpretationin geology,manual ofphotographic interpretation[R].Washington,DC:A-merican Society of Photogrammetry,1960:169-342.
[10]BERGER Z,WILLIAMS T HL,ANDERSON D W.Ge-ologic stereo mapping of geologic structure with SPOTsat-ellite data[J].AAPG Bulletin,1992,76:101-120.
[11]BILOTTI F,SHAWJ H,BRENNAN P A.Quantita-tive structural analysis with stereoscopic remote sensingi magery[J].AAPG Bulletin,2000,84(6):727-740.
[12]刘杨.利用遥感技术进行浅表地质构造重建的方法研究[D].北京:中国石油勘探开发研究院,2003:30-31.LI U Yang.Application of remotes sensing in the shal-low geological structure rebuilding[D].Beijing:Re-search Institute of Petroleum Exploration and Develop-ment,2003:30-31.
[13]SHAWJ H,HOOK S C,SUPPE J.Structural trendanalysis by axial surface mapping[J].AAPG Bulletin,1994,78(5):700-721.
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