利用小波多尺度分解研究郯庐断裂带苏鲁段构造
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摘要
本文利用小波多尺度分解技术对位于苏鲁地区郯庐断裂带的布格重力异常资料进行了场源分离,同时结合功率谱并与地质构造环境相联系,深入研究了郯庐断裂带苏鲁段的地壳深部空间展布.研究发现在布格重力场和区域场中郯庐断裂带苏鲁段总体表现为一条明显的重力异常梯级带,而这条梯级带又具有分段性排布的特点;在局部场中反映莫霍面深度的5阶小波变换细节的重力梯度带边缘和大的构造带边界基本吻合;麦坡地震断裂带至今仍然活跃着.
In this paper,the method of wavelet multi-scale decomposition was used to separate bouguer gravity anomaly data of the Tan-Lu fault zone in the Shandong-Jiangsu region;combined with the power spectrum and geological structure in this area,studied deeply the spatial distribution of the deep crust in the Tan-Lu fault.The results show that the Tan-Lu fault zone in the Sulu regional show a significant overall gravity gradient zone in bouguer gravity field and regional fields.Wuxi-Suqian fault has been obvious break characteristics in the bouguer gravity field.so the Tan-Lu fault zone is divided into the Shandong section(Yi-shu fault zone) and the Jiangsu and Anhui section in accordance with bouguer gravity anomaly information,which explains the obvious points segment features of the Tan-Lu fault zone.The gravity gradient zone information of the 5-order wavelet transform,which reflected Moho depth details in the local field,consistent with large structure boundary.Maipo earthquake fault zone is still active.
In this paper,the method of wavelet multi-scale decomposition was used to separate bouguer gravity anomaly data of the Tan-Lu fault zone in the Shandong-Jiangsu region;combined with the power spectrum and geological structure in this area,studied deeply the spatial distribution of the deep crust in the Tan-Lu fault.The results show that the Tan-Lu fault zone in the Sulu regional show a significant overall gravity gradient zone in bouguer gravity field and regional fields.Wuxi-Suqian fault has been obvious break characteristics in the bouguer gravity field.so the Tan-Lu fault zone is divided into the Shandong section(Yi-shu fault zone) and the Jiangsu and Anhui section in accordance with bouguer gravity anomaly information,which explains the obvious points segment features of the Tan-Lu fault zone.The gravity gradient zone information of the 5-order wavelet transform,which reflected Moho depth details in the local field,consistent with large structure boundary.Maipo earthquake fault zone is still active.
引文
[1]晁洪太,王志才,刘西林.郯庐断裂带下辽河—莱州湾段与潍坊—嘉山段地震构造和地震活动特征对比.华北地震科学,1999,17(2):36-41.Chao H T,Wang Z C,Liu L X,et al.Comparison of seismtectonics and seismicity between the Xia liaohe—Lai zhouwansegment and the Weifang—Jiashan segment of the Tancheng—Lujiang fault zone.North China Earthquake Sciences1999,17(2):36-41.
[2]马杏垣.中国岩石圈动力学地图集.北京:中国地图出版社,1992.Ma X Y.Lithspheric Dynamics Atlas of China.Beijing:BeijingCartographic Publishing House,1992.
[3]郝天珧,刘伊克,段昶.根据重_磁资料探讨中国东部及其邻域断裂体系.地球物理学报,1996,第39卷增刊,141-149.Hao T Y,Liu Y K,Duan C.Approaching fault system of theeast China and adjacent area from gravity and magnetic data.Chinese J.Geophys.(in Chinese),1996,39(Supp.)141-149.
[4]唐新功,陈永顺,唐哲.应用布格重力异常研究郯庐断裂构造.地震学报,2006,28(6):603-610Tang X G,Chen Y S,Tang Z.Bouguer gravity study of middlesection of Tan-Lu fault.Acta Seismologica Sinica,2006,28(6):603-610
[5]候遵泽,杨文采.中国重力异常的小波变换与多尺度分析.地球物理学报,1997,40(1):85-95.Hou Z Y,Yang WC.Wavelet transform and multi—scaleanalysis on gravity anomalies of China.Chinese J.Geophys.(inChinese),1997,40(1):85-95.
[6]杨文采,施志群,侯遵泽等.离散小波变换与重力异常多重分解.地球物理学报,2001,4(4):534-541.Yang WC,Shi Z Q,Hou Z Z,et al.Discrete wavelet transformfor multiple decomposition of gravity anomalieds.Chinese J.Geophys.(in Chinese),2001,44(4):534-541.
[7]方盛明,张先康,嘉世旭.2002.华北地区布格重力异常的多尺度分解特征与地震活动性.大地测量与地球动力学,22(1):34-39.Fang SM,Zhang X K,Jia S X.Multis-scale decomposition ofbouguer gravity anomaly and seismic activity in north China.Journal of Geodesy and Geodynamics,2002,22(1):34-39.
[8]王小凤,李中坚,陈柏林等.郯庐断裂带.北京:地质出版社,2000,72-78.Wang X F,Li Z J,Chen B L,et al.On Tan—Lu Fault Zone(inChinese).Beijing:Geological Publish House,2000,72-78.
[9]刘前志,冯杏芝,张洁.郯庐断裂带地球物理场特征、地质演化及对油气的控制.石油地球物理勘探,1997,32增刊(2):1-10.
[10]宋文荣.宿迁城北构造地貌特征及其成因分析.地震学报,1999,2:45-50.Song W R,Structural geomorphological characteristics andgenesis analysis of north part in suqian city.Joumal ofSeismology,1999,2:45-50.
[11]施炜,张岳桥,董树文.郯庐断裂带中段第四纪活动及其分段特征.地球学报,2003,24(1):11-18.Shi W,Zhang Y Q,Dong SW,Quaternary activity andsegmentation behavior of the middle portion of the Tan-Lufault zone.Acta Geoscientia Sinica,2003,24(1):11-18.
[12]张鹏,王良书,钟锴等.郯庐断裂带的分段性研究.地质评论,2007,9,53(5):586-591.Zhang P,Wang L S,Zhong K,et al.Research on thesegmentation of Tancheng-Lujiang fault zone.geologicalreview,2007,53(5):586-591.
[13]姜文亮,张景发,焦孟梅等.基于布格重力异常小波多尺度分析方法研究首都圈地区构造特征.地质学报,2010,84(4):457-465.Jing W L,Zhang J F,Jiao M M,et al.Research on structuralcharacteristic in Capital area based on wavelet multi-scalemethod of Bouguer gravity anomaly.Acta Geologica Sinica,2010,84(4):457-465.
[14]侯遵泽,杨文采,刘家琦.中国大陆地壳密度差异多尺度反演.地球物理学报,1998,41(5):643-651.Hou Z Z,Yang W C,Liu J Q.Multiscale inversion of thedensity contrast within the crust of China Chinese J.Geophys.(in Chinese),1998,41(5):643-651.
[15]楼海,王椿镛.川滇地区重力异常的小波分解与解释.地震学报,2005,27(5):515-522.Lou H,Wang C Y.Wavelet analysis and interpretation ofgravity data in Sichuan-Yunnan region,China.ActaSeismologica Sinica,2005,27(5):515-522.
[16]刁博,王家林,程顺有.基于重力异常连续复小波变换的断裂分析.石油物探,2009,48(3):303-306.Diao B,Wang J L,Cheng S Y.Fracture analysis basedcontinuous gravity-of complex wavelet transform.GeophysicalProspecting for Petroleum,2009,48(3):303-306.
[17]Coskun Sari,Mujgan Salk.Sediment thicknesses of thewestern Anatolia graben structuresdetermined by 2Dand 3Danalysis using gravity data.Journal of Asian Earth Sciences,2006.26:39-48.
[18]杨宇山,李媛媛,刘天佑等.小波细节的微分特征及其在重力场断裂分析中的应用.地质与勘探.2003,39(1):41-44.Yang Y S,Li YY,Liu T Y,et al.The differentialcharacteristic of the wavelet details and rts application in faultanalysis of gravity field.Geology and Prospecting,2003,39(1):41-44.
[19]郝天珧,刘建华,朱海斌等.华南及其相邻边缘海域一些重要断裂的地球物理证据.地球物理学进展,2002,17(1):13-23.Hao TY,Liu JH,Song H B,et al.Geophysical evidences ofsome important faults in south China and adjacent marginalseas region.Progress in Geophysics(in Chinese),2002,17(1):13-23.
[20]吴蓉元,吕建军.华北板块与华南板块布格重力异常与地壳厚度的相关性研究.物探与化探,1989,13(1):7-14.Wu RY,Lu JJ.The correla1tion between bouguer gravityanomaly and crustal thickness of north china plate and southchina plate.Geophysical&Geochemical Exploration,1989,13(1):7-14.
[21]崔军文,王连捷,唐哲民等.苏鲁高压—超高压变质带深俯冲阶段陆表面、Moho和构造应力场的时空变化.地质学报,2006,80(12):1944-1951.Cui WJ,Wang LJ,Tang ZM,et al.Tem poral-SpatialChanges of the Land Surface,Moho and Tectonic Stress Fieldduring subduction of the Sulu HP-UHPM metamorphic belt.Acta Geologica Sinica,2006,80(12):1944-1951.
[2]马杏垣.中国岩石圈动力学地图集.北京:中国地图出版社,1992.Ma X Y.Lithspheric Dynamics Atlas of China.Beijing:BeijingCartographic Publishing House,1992.
[3]郝天珧,刘伊克,段昶.根据重_磁资料探讨中国东部及其邻域断裂体系.地球物理学报,1996,第39卷增刊,141-149.Hao T Y,Liu Y K,Duan C.Approaching fault system of theeast China and adjacent area from gravity and magnetic data.Chinese J.Geophys.(in Chinese),1996,39(Supp.)141-149.
[4]唐新功,陈永顺,唐哲.应用布格重力异常研究郯庐断裂构造.地震学报,2006,28(6):603-610Tang X G,Chen Y S,Tang Z.Bouguer gravity study of middlesection of Tan-Lu fault.Acta Seismologica Sinica,2006,28(6):603-610
[5]候遵泽,杨文采.中国重力异常的小波变换与多尺度分析.地球物理学报,1997,40(1):85-95.Hou Z Y,Yang WC.Wavelet transform and multi—scaleanalysis on gravity anomalies of China.Chinese J.Geophys.(inChinese),1997,40(1):85-95.
[6]杨文采,施志群,侯遵泽等.离散小波变换与重力异常多重分解.地球物理学报,2001,4(4):534-541.Yang WC,Shi Z Q,Hou Z Z,et al.Discrete wavelet transformfor multiple decomposition of gravity anomalieds.Chinese J.Geophys.(in Chinese),2001,44(4):534-541.
[7]方盛明,张先康,嘉世旭.2002.华北地区布格重力异常的多尺度分解特征与地震活动性.大地测量与地球动力学,22(1):34-39.Fang SM,Zhang X K,Jia S X.Multis-scale decomposition ofbouguer gravity anomaly and seismic activity in north China.Journal of Geodesy and Geodynamics,2002,22(1):34-39.
[8]王小凤,李中坚,陈柏林等.郯庐断裂带.北京:地质出版社,2000,72-78.Wang X F,Li Z J,Chen B L,et al.On Tan—Lu Fault Zone(inChinese).Beijing:Geological Publish House,2000,72-78.
[9]刘前志,冯杏芝,张洁.郯庐断裂带地球物理场特征、地质演化及对油气的控制.石油地球物理勘探,1997,32增刊(2):1-10.
[10]宋文荣.宿迁城北构造地貌特征及其成因分析.地震学报,1999,2:45-50.Song W R,Structural geomorphological characteristics andgenesis analysis of north part in suqian city.Joumal ofSeismology,1999,2:45-50.
[11]施炜,张岳桥,董树文.郯庐断裂带中段第四纪活动及其分段特征.地球学报,2003,24(1):11-18.Shi W,Zhang Y Q,Dong SW,Quaternary activity andsegmentation behavior of the middle portion of the Tan-Lufault zone.Acta Geoscientia Sinica,2003,24(1):11-18.
[12]张鹏,王良书,钟锴等.郯庐断裂带的分段性研究.地质评论,2007,9,53(5):586-591.Zhang P,Wang L S,Zhong K,et al.Research on thesegmentation of Tancheng-Lujiang fault zone.geologicalreview,2007,53(5):586-591.
[13]姜文亮,张景发,焦孟梅等.基于布格重力异常小波多尺度分析方法研究首都圈地区构造特征.地质学报,2010,84(4):457-465.Jing W L,Zhang J F,Jiao M M,et al.Research on structuralcharacteristic in Capital area based on wavelet multi-scalemethod of Bouguer gravity anomaly.Acta Geologica Sinica,2010,84(4):457-465.
[14]侯遵泽,杨文采,刘家琦.中国大陆地壳密度差异多尺度反演.地球物理学报,1998,41(5):643-651.Hou Z Z,Yang W C,Liu J Q.Multiscale inversion of thedensity contrast within the crust of China Chinese J.Geophys.(in Chinese),1998,41(5):643-651.
[15]楼海,王椿镛.川滇地区重力异常的小波分解与解释.地震学报,2005,27(5):515-522.Lou H,Wang C Y.Wavelet analysis and interpretation ofgravity data in Sichuan-Yunnan region,China.ActaSeismologica Sinica,2005,27(5):515-522.
[16]刁博,王家林,程顺有.基于重力异常连续复小波变换的断裂分析.石油物探,2009,48(3):303-306.Diao B,Wang J L,Cheng S Y.Fracture analysis basedcontinuous gravity-of complex wavelet transform.GeophysicalProspecting for Petroleum,2009,48(3):303-306.
[17]Coskun Sari,Mujgan Salk.Sediment thicknesses of thewestern Anatolia graben structuresdetermined by 2Dand 3Danalysis using gravity data.Journal of Asian Earth Sciences,2006.26:39-48.
[18]杨宇山,李媛媛,刘天佑等.小波细节的微分特征及其在重力场断裂分析中的应用.地质与勘探.2003,39(1):41-44.Yang Y S,Li YY,Liu T Y,et al.The differentialcharacteristic of the wavelet details and rts application in faultanalysis of gravity field.Geology and Prospecting,2003,39(1):41-44.
[19]郝天珧,刘建华,朱海斌等.华南及其相邻边缘海域一些重要断裂的地球物理证据.地球物理学进展,2002,17(1):13-23.Hao TY,Liu JH,Song H B,et al.Geophysical evidences ofsome important faults in south China and adjacent marginalseas region.Progress in Geophysics(in Chinese),2002,17(1):13-23.
[20]吴蓉元,吕建军.华北板块与华南板块布格重力异常与地壳厚度的相关性研究.物探与化探,1989,13(1):7-14.Wu RY,Lu JJ.The correla1tion between bouguer gravityanomaly and crustal thickness of north china plate and southchina plate.Geophysical&Geochemical Exploration,1989,13(1):7-14.
[21]崔军文,王连捷,唐哲民等.苏鲁高压—超高压变质带深俯冲阶段陆表面、Moho和构造应力场的时空变化.地质学报,2006,80(12):1944-1951.Cui WJ,Wang LJ,Tang ZM,et al.Tem poral-SpatialChanges of the Land Surface,Moho and Tectonic Stress Fieldduring subduction of the Sulu HP-UHPM metamorphic belt.Acta Geologica Sinica,2006,80(12):1944-1951.
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