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北京南部地壳精细结构深地震反射探测研究

DOI: 10.6038/cjg20130412, PP. 1168-1176

Keywords: 北京平原区,隐伏活动断裂,深地震反射剖面,结晶基底,速度剖面,壳幔过渡带

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Abstract:

为了研究北京平原区的地壳结构特征、断裂的空间展布、断裂活动性以及深浅构造关系,在北京平原区的南部完成了1条长90km的深地震反射剖面.探测结果表明,该区地壳以双程反射时间(TWT)6~7s的强反射带Tc为界分为上地壳和下地壳,上地壳厚约18~19km,下地壳厚约16~17km,Moho界面深度约为34~35km.该区结晶基底起伏变化较大,上、下地壳分界面和Moho界面都是一个具有一定厚度的过渡带.上地壳反射层位丰富,断裂构造发育,构造形态清晰.在夏垫断裂西北,剖面揭示了4~5组能量较强的反射震相,表现为典型的隆起区特征;在夏垫断裂东南,上部为一套向东南倾伏的密集强反射层,下部为一套形态各异、结构复杂的强反射层,这些反射具有典型的沉积盆地特征,盆地最深处约为11km.剖面揭示的地壳深断裂倾角较陡,向上切穿了上、下地壳分界面,延伸到上地壳沉积盆地的底部,向下切穿了壳幔过渡带,与上部断裂和沉积盆地构成了独特的组合关系.

References

[1]  赵金仁, 张先康, 张成科等. 利用宽角反射/折射和深反射探测剖面揭示三河—平谷大震区深部结构特征. 地球物理学报, 2004, 47(4): 646-653. Zhao J R, Zhang X K, Zhang C K, et al. Deep structural features of the Sanhe-Pinggu great earthquake area imaged by wide-angle and deep seismic reflection profiling. Chinese J. Geophys. (in Chinese), 2004, 47(4): 646-653.
[2]  赵金仁, 张先康, 张成科等. 香河—北京—涿鹿及其相邻地区壳幔构造与速度结构特征. 地震地质, 1999, 21(1): 29-36. Zhao J R, Zhang X K, Zhang C K, et al. The crust-mantle tectonics and velocity structure characteristics in Xianghe-Beijing-Zhulu and its adjacent areas. Seismology and Geology (in Chinese), 1999, 21(1): 29-36.
[3]  王夫运, 张先康, 陈棋福等. 北京地区上地壳三维细结构层析成像. 地球物理学报, 2005, 48(2): 359-366. Wang F Y, Zhang X K, Chen Q F, et al. Fine tomographic inversion of the upper crust 3-D structure around Beijing. Chinese J. Geophys. (in Chinese), 2005, 48(2): 359-366.
[4]  焦青, 邱泽华, 范国胜. 北京地区八宝山—黄庄—高丽营断裂的活动与地震. 大地测量与地球动力学, 2005, 25(4): 50-54. Jiao Q, Qiu Z H, Fan G S. Analysis on recent tectonic activity and seismicity of Babaoshan-Huangzhuang-Gaoliying fault in Beijing region. Journal of Geodesy and Geodynamics (in Chinese), 2005, 25(4): 50-54.
[5]  高文学, 马瑾. 首都圈地震地质环境与地震灾害. 北京: 地震出版社, 1993: 3-51. Gao W X, Ma J. Seismo-Geological Background and Earthquake Hazard in Beijing Area (in Chinese). Beijing: Seismological Press, 1993: 3-51.
[6]  徐锡伟, 马文涛, 于贵华等. 华北平原北部最新构造变动环境及其构造模式——三河—平谷地震断层深浅构造关系分析. //卢演俦等主编. 新构造与环境. 北京: 地震出版社, 2001, 267-281. Xu X W, Ma W T, Yu G H, et al. The Background of Mostrecent Tectonic Events in the Northern North China Plain and Its Structural Pattern-Analysis of Correlation Between Shallow and Deep Structures Along the Sanhe-Pinggu Seismic Fault. //Lu Y C, ed. Recent Tectonics and Environment (in Chinese). Beijing: Seismological Press, 2001, 267-281.
[7]  高战武, 陈棋福, 黄金莉等. 北京地区主要活动断裂深部速度结构特征及强震构造分析. 震灾防御技术, 2010, 5(3): 271-280. Gao Z W, Chen Q F, Huang J L, et al. Velocity structure beneath the active faults in Beijing area and their seismo-tectonic characteristics. Technology for Earthquake Disaster Prevention (in Chinese), 2010, 5(3): 271-280.
[8]  刘保金, 胡平, 孟勇奇等. 北京地区地壳精细结构的深地震反射剖面探测研究. 地球物理学报, 2009, 52(9): 2264-2272. Liu B J, Hu P, Meng Y Q, et al. Research on fine crustal structure using deep seismic reflection profile in Beijing region. Chinese J. Geophys. (in Chinese), 2009, 52(9): 2264-2272.
[9]  高景华, 徐明才, 刘建勋等. 高分辨率城市活断层地震资料处理技术. 物探化探计算技术, 2005, 27(3): 209-213. Gao J H, Xu M C, Liu J X, et al. High resolution seismic data processing technique of detecting active fault in city. Computing Techniques for Geophysical and Geochemical Exploration (in Chinese), 2005, 27(3): 209-213.
[10]  赵金仁, 张先康, 张成科等. 利用宽角反射/折射和深反射探测剖面揭示三河—平谷大震区深部结构特征. 地球物理学报, 2004, 47(4): 646-653. Zhao J R, Zhang X K, Zhang C K, et al. Deep structural features of the Sanhe-Pinggu great earthquake area imaged by wide-angle and deep seismic reflection profiling. Chinese J. Geophys. (in Chinese), 2004, 47(4): 646-653.
[11]  张先康, 王椿镛, 刘国栋等. 延庆—怀来地区地壳精细结构—利用深地震反射剖面. 地球物理学报, 1996, 39(3): 356-364. Zhang X K, Wang C Y, Liu G D, et al. Fine crustal structure in Yanqing-Huailai region by deep seismic reflection profiling. Chinese J. Geophys. (in Chinese), l996, 39(3): 356-364.
[12]  王椿镛, 王贵美, 林中洋等. 用深地震反射方法研究邢台地震区地壳细结构. 地球物理学报, 1993, 36(4): 445-452. Wang C Y, Wang G M, Lin Z Y, et al. A study on fine crustal structure in Xingtai earthquake area based on deep seismic reflection profiling. Chinese J. Geophys. (in Chinese), 1993, 36(4): 445-452.
[13]  赵伯明, 徐锡伟. 汶川Ms8.0地震断层与地震灾害初步分析. 地震地质, 2008, 30(4): 839-854. Zhao B M, Xu X W. An analysis on Ms8.0 Wenchuan earthquake fault and seismic disaster. Seismology and Geology (in Chinese), 2008, 30(4): 839-854.
[14]  Scholz H C. The Mechanics of Earthquakes and Fau1ting. Cambridge: Cambridge University Press, l990, 73-96.
[15]  Crone A J, Haller K M. Segmentation and the seismic behavior of basin and range normal faults: Examples from east-central Idaho and southwestern Montana, U.S.A. J. Struct. Geol., 1991, 13(2): 151-164.
[16]  徐锡伟. 活动断层、地震灾害与减灾对策问题. 震灾防御技术, 2006, 1(1): 7-14. Xu X W. Active faults, associated earthquake disaster distribution and policy for disaster reduction. Technology for Earthquake Disaster Prevention (in Chinese), 2006, 1(1): 7-14.
[17]  徐锡伟, 闻学泽, 叶建青等. 汶川Ms8.0地震地表破裂带及其发震构造. 地震地质, 2008, 30(3): 597-629. Xu X W, Wen X Z, Ye J Q, et al. The Ms8.0 Wenchuan earthquake surface ruptures and its seismogenic structure. Seismology and Geology (in Chinese), 2008, 30(3): 597-629.
[18]  邓起东. 城市活动断裂探测和地震危险性评价问题. 地震地质, 2002, 24(4): 601-605. Deng Q D. Exploration and seismic hazard assessment of active faults in urban areas. Seismology and Geology (in Chinese), 2002, 24(4): 601-605.
[19]  王培德, 李春来, E Wetzig等. 用地震层析成像方法研究北京西北地区的活动断裂. 地震学报, 2007, 29(1): 11-19. Wang P D, Li C L, Wetzig E, et al. Seismic active faults in the northwestern Beijing by seismic tomography. Acta Seismologica Sinica (in Chinese), 2007, 29(1): 11-19.
[20]  李乐, 陈棋福. 利用重复地震估算北京平原地区隐伏断裂深部的活动速率. 地震地质, 2010, 32(3): 508-519. Li L, Chen Q F. Slip rates at depth along the buried faults in Beijing plain area etstimated from repeating microearthquakes. Seismology and Geology (in Chinese), 2010, 32(3): 508-519.
[21]  祝治平, 张先康, 张建狮等. 北京—怀来—丰镇剖面地壳上地幔构造与速度结构研究. 地震学报, 1997, 19(5): 499-505. Zhu Z P, Zhang X K, Zhang J S, et a1. Study on crust-mantle tectonics and its velocity structure along the Beijing-Huailai-Fengzhen profile. Acta Seismologica Sinica (in Chinese), 1997, 10(5): 615-623.
[22]  王丽娜, 王建民, 王元波等. DMO校正技术在深层地震资料处理中的应用. 大庆石油地质与开发, 2003, 22(5): 63-64. Wang L N, Wang J M, Wang Y B, et al. The application of DMO method in deep seismic data processing. Petroleum Geology & Oilfield Development in Daqing (in Chinese), 2003, 22(5): 63-64.
[23]  张成科, 张先康, 盖玉杰等. 文安—蔚县—察右中旗剖面地壳上地幔速度结构与构造研究. 华北地震科学, 1997, 15(3): 18-28. Zhang C K, Zhang X K, Gai Y J, et al. A study of crust and upper mantle structure on Wen''an-Yuxian-Qaharyouyizhongqi profile. North China Earthquake Sciences (in Chinese), 1997, 15(3): 18-28.
[24]  陆涵行, 曾融生, 郭建明等. 唐山震区深反射剖面分析. 地球物理学报, 1988, 31(1): 27-36. Lu H X, Zeng R S, Guo J M, et al. Results from deep seismic reflection profiling in Tangshan region. Chinese J. Geophys. (in Chinese), 1988, 31(1): 27-36.
[25]  Meissner R, The ''Moho'' as a transition zone. Geophys. Survey., 1973, 1(2): 195-216.

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