全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科学通报  2014 

滇西南地区地壳速度结构的区域波形反演

DOI: 10.1360/N972014-00407, PP. 3398-3415

Keywords: 小生境遗传算法,波形反演,地壳速度结构,流动地震观测,滇西南

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用中国地震局地壳应力研究所于2010~2011年在滇西南地区布设的宽频带流动地震台所记录的三分量高质量波形资料,采用小生境遗传算法通过波形反演,获得了研究区P波速度模型.结果显示,滇西南地区地壳厚度为38~43km,上地幔顶部平均速度为7.9km/s,地壳速度存在明显的横向不均匀性.思茅地块的上地壳和下地壳厚度均呈现出明显的由南向北、自东向西增厚趋势,说明该地块地壳增厚由上地壳和下地壳共同增厚形成.腾冲地块中地壳和下地壳的平均厚度及速度均小于保山地块和思茅地块,思茅地块部分路径上的下地壳和上地幔速度均较低,可能与印度板块东向俯冲引起地幔热物质上涌等动力过程密切相关.这些结果对于认识青藏高原形成与演化动力过程提供重要地震学约束.

References

[1]  2 李继亮. 滇西三江带的大地构造演化. 地质科学, 1998, 4: 337-345
[2]  3 Tapponnier P, Mercier J L, Proust F, et al. The Tibetan side of the India-Eurasian collision. Nature, 1981, 294: 405-410
[3]  9 Wang E, Burchfiel B C, Royden L H, et al. Late Cenozoic Xianshuihe-Xiaojiang, Red River, and Dali fault systems of southwestern Sichuan and central Yunnan, China. Geol Soc Am, Spec Pap, 1998, 327: 1-108
[4]  10 Engdahl R, van der Hilst R, Buland R. Global teleseismic earthquake relocation with improved travel times and procedures for depth determination. Bull Seismol Soc Amer, 1998, 88: 722-743
[5]  11 胡鸿翔, 陆涵行, 王椿镛, 等. 滇西地区地壳结构的爆破地震研究. 地球物理学报, 1986, 29: 133-144
[6]  12 Kan R J, Hu H X, Zeng R, et al. Crustal structure of Yunnan Province, People's Republic of China, from seismic refraction profiles. Science, 1986, 234: 433-437
[7]  13 张中杰, 白志明, 王椿镛, 等. 冈瓦纳型和扬子型地块地壳结构: 以滇西孟连-马龙宽角反射剖面为例. 中国科学D辑: 地球科学, 2005, 35: 387-392
[8]  19 Gao Y, Shi Y T, Wu J, et al. Shear-wave splitting in the crust: Regional compressive stress from polarizations of fast shear-waves. Earthq Sci, 2012, 25: 35-45
[9]  20 Sun C Q. The deformation features of crustal structure beneath the east Tibetan margin and neighboring areas. Appl Mech Mater, 2014, 501: 1520-1523
[10]  21 孔祥儒, 刘士杰, 窦秦川, 等. 攀西地区地壳和上地幔中的电性结构. 地球物理学报, 1987, 30: 136-143
[11]  22 Bai D H, Unsworth M J, Meju M A, et al. Crustal deformation of the eastern Tibetan Plateau revealed by magnetotelluric imaging. Nat Geosci, 2010, 3: 358-362
[12]  23 王椿镛, Mooney W D, 王溪莉, 等. 川滇地区地壳上地幔三维速度结构研究. 地震学报, 2002, 24: 1-16
[13]  27 徐鸣洁, 王良书, 刘建华, 等. 利用接受函数研究哀牢山-红河断裂带地壳上地幔特征. 中国科学D辑: 地球科学, 2005, 35: 729-737
[14]  28 李永华, 吴庆举, 田小波, 等. 用接收函数方法研究云南及其邻区地壳上地幔结构. 地球物理学报, 2009, 52: 67-80
[15]  29 查小惠, 雷建设. 云南地区地壳厚度和泊松比研究. 中国科学: 地球科学, 2013, 43: 446-456
[16]  33 Koper K D, Wysession M E, Wiens D A. Multimodal function optimization with a niching genetic algorithm: A seismological example. Bull Seismol Soc Amer, 1999, 89: 978-988
[17]  34 李少华, 王彦宾, 梁子斌, 等. 甘肃东南部地壳速度结构的区域地震波形反演. 地球物理学报, 2012, 55: 1186-1197
[18]  36 Li H Y, Michelini A, Zhu L P, et al. Crustal velocity structure in Italy from analysis of regional seismic waveforms. Bull Seismol Soc Am, 2007, 97: 2024-2039
[19]  37 Alvarado P, Beck S, Zandt G. Crustal structure of the south-central Andes Cordillera and backarc region from regional waveform modeling. Geophys J Int, 2007, 170: 858-875
[20]  38 Chapman C H, Orcutt J A. Least-squares fitting of marine seismic refraction data. Geophys J Roy Astron Soc, 1985, 82: 339-374
[21]  39 Xu Y, Wiens D A. Upper mantle structure of the southwest Pacific from regional waveform inversion. J Geophys Res, 1997, 102: 27439-27451
[22]  40 Abdelwahed M F, Zhao D. Waveform modeling of local earthquakes in southwest Japan. Earth Planets Space, 2005, 57: 1039-1054
[23]  41 王夫运, 张先康. 波形反演遗传算法及其在地震测深数据解释中的应用. 地震学报, 2006, 28: 158-166
[24]  42 Stoffa P L, Sen M K. Nonlinear multi-parameter optimization using genetic algorithms: Inversion of plane-wave seismograms. Geophysics, 1991, 56: 1794-1810
[25]  43 Vasco D W, Peterson Jr J E, Majer E L. Nonuniqueness in traveltime tomography: Ensemble inference and cluster analysis. Geophysics, 1996, 61: 1209-1227
[26]  44 Holland J H. Adaptation in Natural and Artificial Systems: An Introductory Analysis with Applications to Biology, Control, and Artificial Intelligence. Oxford, England: U Michigan Press, 1975. 183
[27]  45 Goldberg D E, Holland J H. Genetic algorithms and machine learning. Mach Learn, 1988, 3: 95-99
[28]  46 Berteussen K A. Moho depth determinations based on spectral-ratio analysis of NORSAR long-period P waves. Phys Earth Planet Inter, 1977, 15: 13-27
[29]  47 Zhu L, Rivera L A. A note on the dynamic and static displacements from a point source in multilayered media. Geophys J Int, 148: 619-627
[30]  53 Maurice R, Stacey D, Wiens D A, et al. Crustal and upper mantle structure of southernmost South America inferred from regional waveform inversion. J Geophys Res, 2003, 108: 2039-2049
[31]  54 Lei J S, Xie F R, Mishra O P, et al. The 2011 Yingjiang, China, Earthquake: A Volcano-Related Fluid-Driven Earthquake? Bull Seismol Soc Amer, 2012, 102: 417-425
[32]  58 赵慈平, 冉华, 陈坤华. 由相对地热梯度推断的腾冲火山区现存岩浆囊. 岩石学报, 2006, 22: 1517-1528
[33]  59 Li Y H, Wu Q J, Zhang R, et al. The crust and upper mantle structure beneath Yunnan from joint inversion of receiver functions and Rayleigh wave dispersion data. Phys Earth Planet Inter, 2008, 170: 134-146
[34]  60 Xiong S B, Teng J W, Yin Z X, et al. Explosion seismological study of the structure of the crust and upper mantle at southern part of the Panxi tectonic belt. Acta Geophys Sin, 1986, 29: 235-244
[35]  61 吴建平, 明跃红, 王椿镛. 云南数字地震台站下方的S波速度结构研究. 地球物理学报, 2001, 44: 228-237
[36]  62 阚荣举, 林中祥. 云南地壳上地幔构造的初步研究. 中国地震, 1986, 2: 50-61
[37]  63 林中洋, 胡鸿翔, 张文彬, 等. 滇西地区地壳上地幔速度结构特征的研究. 地震学报, 1993, 15: 427-440
[38]  71 Xu Y, Yang X T, Li Z W, et al. Seismic structure of the Tengchong volcanic area southwest China from local earthquake tomography. J Volc Geotherm Res, 2012, 239: 83-91
[39]  1 邓启东, 张培震, 冉勇康, 等. 中国活动构造基本特征. 中国科学D辑: 地球科学, 2002, 32: 1020-1030
[40]  4 Tapponnier P, Lacassin R, Leloup P H, et al. The Ailao Shan/Red-River metamorphic belt: Tertiary left-lateral shear between Indochina and South China. Nature, 1990, 343: 431-437
[41]  5 England P, Houseman G. Finite strain calculations of continental deformation 2. Comparison with the India-Asia collision zone. J Geo-phys Res, 1986, 91: 3664-3676
[42]  6 Yin A, Harrison T. Geological evolution of the Himalayan-Tibetan orogen. Annu Rev Earth Planet Sci, 2000, 28: 211-280
[43]  7 Harrison T, Chen W, Leloup P, et al. An early Miocene transition in deformation regime within the Red River fault zone, Yunnan, and its significance for the Indo-Asian tectonics. J Geophys Res, 1992, 97: 7159-7182
[44]  8 Wang E, Burchfiel B. Interpretation of Cenozoic tectonics in the right-lateral accommodation zone between the Ailao Shan shear zone and the eastern Himalayan syntaxis. Int Geol Rev, 1997, 39: 191-219
[45]  14 Wang C, Flesch L, Silver P, et al. Evidence for mechanically coupled lithosphere in central Asia and resulting implication. Geology, 2008, 36: 363-366
[46]  15 Yao H J, van der Hilst R D, Montagner J P. Heterogeneity and anisotropy of the lithosphere of SE Tibet from surface wave array tomography. J Geophys Res, 2010, 115: B12307, doi: 10.1029/2009JB007142
[47]  16 孙长青, 陈赟, 高尔根. 青藏高原东缘强烈盆山相互作用区的地壳各向异性特征及其动力学意义探讨. 地球物理学报, 2011, 54: 1205-1214
[48]  17 孙长青, 雷建设, 李聪, 等. 云南地区地壳各向异性及其动力学意义. 地球物理学报, 2013, 56: 4095-4105
[49]  18 Chen Y, Zhang Z J, Sun C Q, et al. Crustal anisotropy from Moho converted Ps wave splitting analysis and geodynamic implications beneath the eastern margin of Tibet and surrounding regions. Gondwana Res, 2013, 24: 946-957
[50]  24 何正勤, 叶太兰, 苏伟. 云南地区地壳中上部横波速度结构研究. 地球物理学报, 2004, 47: 838-844
[51]  25 Lei J S, Zhao D P, Su Y J. Insight into the origin of the Tengchong intraplate volcano and seismotectonics in southwest China from local and teleseismic data. J Geophys Res, 2009, 114: B05302, doi: 10.1029/2008JB005881
[52]  26 Lei J S, Li Y, Xie F R, et al. Pn anisotropic tomography and dynamics under eastern Tibetan Plateau. J Geophys Res, 2014, 119: 2174-2198
[53]  30 Sun Y, Niu F L, Liu H F, et al. Crustal structure and deformation of the SE Tibetan Plateau revealed by receiver function data. Earth Planet Sci Lett, 2012, 349-350: 186-197
[54]  31 吴建平, 明跃红, 王椿镛. 川滇地区速度结构的区域地震波形反演研究. 地球物理学报, 2006, 49: 1369-1376
[55]  32 Lei J S, Zhang G W, Xie F R, et al. Relocation of the 10 March 2011 Yingjiang, China, earthquake sequence and its tectonic implications. Earthq Sci, 2012, 25: 103-110
[56]  35 Bhattacharyya J, Sheehan A F, Tiampo K, et al. Using a genetic algorithm to model broadband regional waveforms for crustal structure in the western United States. Bull Seismol Soc Amer, 1999, 89: 202-214
[57]  48 曹小林, 洪学海, 曹俊兴. 面波波形反演中的模拟退火法. 成都理工学院学报, 2000, 27: 296-301
[58]  49 Helmberger D V, Engen G R. Modeling the long-period body waves from shallow earthquakes at regional ranges. Bull Seismol Soc Amer, 1980, 70: 1699-1714
[59]  50 Zhang X, Wang Y. Crustal and upper mantle velocity structure in Yunnan, Southwest China. Tectonophysics, 2009, 471: 171-185
[60]  51 周龙泉, 刘杰, 苏有锦, 等. 利用S波高频衰减参数对云南地区地壳Q值成像. 地球物理学报, 2009, 52: 1500-1507
[61]  52 胡家富, 丛连理, 苏有锦, 等. 云南及周边地区Lg尾波Q值的分布特征. 地球物理学报, 2003, 46: 809-813
[62]  55 Lei J S, Xie F R, Fan Q C, et al. Seismic imaging of the deep structure under the Chinese volcanoes: An overview. Phys Earth Planet Inter, 2013, 224: 104-123
[63]  56 Xu L, Rondenay S, van der Hilst R D. Structure of the crust beneath the southeastern Tibetan Plateau from teleseismic receiver functions. Phys Earth Planet Inter, 2007, 165: 176-193
[64]  57 胥颐, 杨晓涛, 刘建华. 云南地区地壳速度结构的层析成像研究. 地球物理学报, 2013, 56: 1904-1914
[65]  64 何翔, 吴国华. 云南地区的地壳厚度及重力均衡补偿作用. 地震研究, 1986, 4: 267-268
[66]  65 Wang P, Wang L S, Mi N, et al. Crustal thickness and average Vp/Vs ratio variations in southwest Yunnan, China, from teleseismic receiver functions. J Geophys Res, 2010, 115: B11308, doi: 10.1029/2009JB006651
[67]  66 胡家富, 苏有锦, 朱雄关, 等. 云南的地壳S波速度与泊松比结构及其意义. 中国科学D辑: 地球科学, 2003, 33: 714-722
[68]  67 张智, 赵兵, 张晰, 等. 云南思茅-中旬地震剖面的地壳结构. 地球物理学报, 2006, 49: 1377-1384
[69]  68 王椿镛, 皇甫岗, 万登堡, 等. 腾冲火山区地壳结构的人工地震探测. 地震研究, 2000, 23: 148-156
[70]  69 Royden L H, Clark B C, King R W, et al. Surface deformation and lower crustal flow in eastern Tibet. Science, 1997, 276: 788-790
[71]  70 Li C, van der Hilst R, Meltzer A, et al. Subduction of the Indian lithosphere beneath the Tibetan Plateau and Burma. Earth Planet Sci Lett, 2008, 274: 157-168

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133