Advanced Search
Liu Sha, Tian Baofeng, Jiang Xudong, Xu Zhiqiang, Zheng Yu, Yang Jiansi. 2014: Anisotropy in the crust and upper mantle at the Great Wall seismic station in Antarctica. Acta Seismologica Sinica, 36(5): 862-871. DOI: 10.3969/j.issn.0253-3782.2014.05.010
Citation: Liu Sha, Tian Baofeng, Jiang Xudong, Xu Zhiqiang, Zheng Yu, Yang Jiansi. 2014: Anisotropy in the crust and upper mantle at the Great Wall seismic station in Antarctica. Acta Seismologica Sinica, 36(5): 862-871. DOI: 10.3969/j.issn.0253-3782.2014.05.010
shu

Anisotropy in the crust and upper mantle at the Great Wall seismic station in Antarctica

  • Institute of Geophysics, China Earthquake Administration, Beijing 100081, China

More Information
  • Received Date: November 11, 2013
  • Revised Date: May 26, 2014
  • Published Date: August 31, 2014
    Graphical Abstract
    • Abstract
  • Using the earthquake events from February 2008 to March 2010 recorded by the Great Wall seismic station in Antarctica, which is from the 24th and 25th Antarctic scientific expeditions, this paper studies the shear wave splitting. By choosing the local earthquakes and using Sg waveforms to study the shear wave splitting, the polarization direction of the fast wave are northeast and nearly north-south. The delay time of the slow wave is in the range of 1.45—5.17 ms/km with the average value being 3.54 ms/km. By choosing the teleseismic events and using SKS waveforms to calculate the parameters of shear wave splitting, the polarization direction of the fast wave is northeast, and the average delay time of the slow wave is 1.60 s. The results of shear wave splitting shows that the anisotropy in the crust and upper mantle is obvious. And the polarization direction of fast wave in the crust is parallel to that in the upper mantle, which indicates the deformation in the crust and upper mantle is identical. In addition, the anisotropic directions of fast wave polarizations in the crust and mantle are parallel to the direction of ocean trench around the Great Wall seismic station and to the direction of the absolute plate motions, which further suggests that the absolute plate motions are the primary cause of the upper mantle anisotropy.
    • FullText(HTML)
    • References (27)
  • 常利军, 王椿镛, 丁志峰, 周民都, 杨建思, 徐智强, 姜旭东, 郑秀芬. 2008. 青藏高原东北缘上地幔各向异性研究[J]. 地球物理学报, 51 (2): 432-438.

    Chang L J, Wang C Y, Ding Z F, Zhou M D, Yang J S, Xu Z Q, Jiang X D, Zheng X F. 2008. Seismic anisotropy of upper mantle in the northeastern margin of the Tibetan Plateau[J]. Chinese Journal of Geophysics, 51 (2): 432-438 (in Chinese).
    高原, 郑斯华, 王培德. 1996. 海南省东方地区1992年小震群剪切波分裂研究[J]. 地球物理学报, 39 (2): 221-232.

    Gao Y, Zheng S H, Wang P D. 1996. Shear wave splitting study on small earthquake swarm of 1992 in Dongfang of Hainan, South China[J]. Acta Geophysica Sinica, 39 (2): 221-232 (in Chinese).
    贾国强. 1990. 1986年冬季中国南极长城站的地震观测[J]. 极地研究, 2 (2): 81-85.

    Jia G Q. 1990. Seismological observation at the Great Wall station during austral winter of 1986[J]. Advances in Polar Science, 2 (2): 81-85 (in Chinese).
    罗艳, 黄忠贤, 彭艳菊, 郑月军. 2004. 中国大陆及邻区SKS波分裂研究[J]. 地球物理学报, 47 (5): 812-821.

    Luo Y, Huang Z X, Peng Y J, Zheng Y J. 2004. A study on SKS wave splitting beneath the China mainland and adjacent regions[J]. Chinese Journal of Geophysics, 47 (5): 812-821 (in Chinese).
    石玉涛, 高原, 赵翠萍, 姚志祥, 太龄雪, 张永久. 2009. 汶川地震余震序列的地震各向异性[J]. 地球物理学报, 52 (2): 398-407.

    Shi Y T, Gao Y, Zhao C P, Yao Z X, Tai L X, Zhang Y J. 2009. A study of seismic anisotropy of Wenchuan earthquake sequence[J]. Chinese Journal of Geophysics, 52 (2): 398-407 (in Chinese).
    田宝峰, 杨建思, 刘莎, 郑钰, 姜旭东, 徐志强. 2012. 南极地震学研究进展[J]. 地震学报, 34 (2): 267-279.

    Tian B F, Yang J S, Liu S, Zheng Y, Jiang X D, Xu Z Q. 2012. Progress of seismological research in Antarctica region[J]. Acta Seismologica Sinica, 34 (2): 267-279 (in Chinese).
    Anandakrishnan S, Winberry J P. 2004. Antarctic subglacial sedimentary layer thickness from receiver function analysis[J]. Global Planet Change, 42 (1/2/3/4): 167-176.
    Bannister S, Yu J, Leitner B, Kennett B L N. 2003. Variations in crustal structure across the transition from west to east Antarctica, Southern Victoria Land[J]. Geophys J Int, 155 (3): 870-880.
    Crampin S. 1985. Evaluation of anisotropy by shear-wave splitting[J]. Geophysics, 50 (1): 142-152.
    Crampin S. 1999. Stress forecasting earthquakes[J]. Seism Res Lett, 70 (3): 291-293.
    Gripp A E, Gordon R G. 1990. Current plate velocities relative to the hotspots incorporating the NUVEL-1 global plate motion model[J]. Geophys Res Lett, 17 (8): 1109-1112.
    Hayes D E. 1991. Tectonics and age of the oceanic crust: Circum-Antarctic to 30°S [C]//Hayes D E ed. Marine Geological and Geophysical Atlas of the Circum-Antarctic to 30°S. Washington: American Geophysical Union: 47-56.
    Hess H H. 1964. Seismic anisotropy of the uppermost mantle under oceans[J].Nature, 203 (4945): 629-631.
    Kaminuma K, Ishida M. 1971. Earthquake activity in Antarctica[J]. Nankyoku Shiryo: Antarct Rec, 42 : 53-60.
    Kaminuma K. 1995. Seismicity around the Antarctic Peninsula[J]. Proc NIPR Symp Antarct Geosci, 8 : 35-42.
    Mainprice D, Silver P G. 1993. Interpretation of SKS-wave using samples from the subcontinental lithosphere[J]. Phys Earth Planet Inter, 78 (3/4): 257-280.
    Müller C. 2001. Upper mantle seismic anisotropy beneath Antarctica and the Scotia Sea region[J]. Geophys J Int, 147 (1): 105-122.
    Nicolas A, Christensen N L. 1987. Formation of anisotropy in upper mantle peridotites: A review[C]//Fuchs K, Froidevaux C eds. Composition Structure and Dynamics of the Lithosphere-Asthenosphere System. New York: John Wiley & Sons, Inc. , 16 : 111-123.
    Pondrelli S, Azzara R. 1998. Upper mantle anisotropy in Victoria Land (Antarctica)[J]. Pure Appl Geophys, 151 (2/3/4): 433-442.
    Pondrelli S, Margheriti L, Danesi S. 2005. Seismic anisotropy beneath Northern Victoria Land from SKS splitting Analysis[C]//Futterer D K, Damaske D, Kleinschmidt G, Miller H, Tessensohn F eds. Antarctica: Contributions to Global Earth Sciences. Heidelberg: Springer-Verlag: 153-160.
    Reading A M. 2007. The seismicity of the Antarctic Plate[J]. Geol Soc Amer Special Papers, 425 : 285-298.
    Sieminski A, Debayle E, Leveque J. 2003. Seismic evidence for deep low-velocity anomalies in the transition zone beneath west Antarctica[J]. Earth Plan Sci Lett, 216 (4): 645-661.
    Silver P G, Chan W W. 1991. Shear wave splitting and subcontinental mantle deformation[J]. J Geophys Res, 96 (B10): 16429-16454.
    Silver P G. 1996. Seismic anisotropy beneath the continents: Probing the depths of geology[J]. Ann Rev Earth Plant Sci, 24 (1): 385-432.
    Vinnik L P, Kind R, Makayeva L I, Kosarev G L. 1989. Azimuthal anisotropy in the lithosphere from observations of long period S wave[J]. Geophys J Int, 99 (3): 549-559.
    Watson T, Nyblade A, Wiens D A, Anandakrishnan S, Benoit M, Shore P J, Voigt D, VanDecar J. 2006. P and S velocity structure of the upper mantle beneath the Transantarctic Mountains, East Antarctic craton, and Ross Sea from travel time tomography[J]. Geochem Geophys Geosyst, 7 (7): Q07005. doi:10.1029/2005GC001238.
    Winberry J P, Anandakrishnan S. 2004. Crustal structure of the West Antarctic rift system and Marie Byrd Land hotspot[J]. Geology, 32 (11): 977-980. doi:10.1130/G20768.1.
    • Related Articles

  • Related Articles

    Liu Yuan, Xue Mei. 2021: Seismic anisotropy within the Nankai area，Japan，using DONET seafloor observation network. Acta Seismologica Sinica, 43(1): 73-83. DOI: 10.11939/jass.20200087
    Wang Huaifu, Wu Jianping, Zhou Shiyong, Feng Tian. 2020: Rayleigh wave azimuthal anisotropy in western Sichuan region. Acta Seismologica Sinica, 42(3): 293-305. DOI: 10.11939/jass.20190103
    Ma Qiyang, Xu Lisheng, Yan Chuan, Li Chunlai, Xu Kangsheng. 2016: Observation of P-wave velocity anisotropy of the shallow crust in the northern Xiaojiang fault zone: Principle and numerical tests. Acta Seismologica Sinica, 38(1): 15-42. DOI: 10.11939/jass.2016.01.002
    Zhou Pengcheng, Lei Jun. 2016: Lowermost mantle anisotropy along the boundary of the easternmost Pacific LLSVP. Acta Seismologica Sinica, 38(1): 1-14. DOI: 10.11939/jass.2016.01.001
    Zhang P, Zhang H J, Liu Y, Wang H, Toksöz M N. 2015: Focal mechanisms and seismic anisotropy analysis of local earthquakes at the Cove Fort-Sulphurdale geothermal site, United States.. Acta Seismologica Sinica, 37(6): 899-915. DOI: 10.11939/jass.2015.06.002
    Huang Xing, Gao Yuan. 2014: Reviews on the anisotropy studies in the Tibetan Plateau and its adjacent areas. Acta Seismologica Sinica, 36(6): 1141-1151. DOI: 10.3969/j.issn.0253-3782.2014.06.015
    Feng Lili, Chen Yun-tai, Lei Jun. 2014: SKS splitting analysis of seismic anisotropy beneath mid-eastern Africa. Acta Seismologica Sinica, 36(6): 981-996. DOI: 10.3969/j.issn.0253-3782.2014.06.001
    Shao Yuanyuan, Zheng Xuyao. 2014: Crustal anisotropy of Huailai--Yanqing region in North China. Acta Seismologica Sinica, 36(3): 390-402. DOI: 10.3969/j.issn.0253-3782.2014.03.005
    div align=leftMa Heqingup,Ding ZhifengChang LijunGao WupingupCai Xinhuaupdiv;. 2010: Seismic anisotropy of the upper mantle in Ningxia region. Acta Seismologica Sinica, 32(5): 507-516.
    2004: 华东地区地电阻率各向异性度的地震前兆异常特征初步研究. Acta Seismologica Sinica, 26(2): 223-227.

Catalog

    Get Citation
    PDF
    XML
    Article views (552) PDF downloads (5) Cited by()
    Turn off MathJax
    Article Contents
    Abstract
    References
    Related Articles

    Supported by: Beijing Renhe Information Technology Co., Ltd.   

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return