Advanced Search
Wang Linying, Li Yan’e, Zheng Xuyao, Wang Shengwen. 2014: Temporal variation of vP/vS at single seismic station before the 2013 Lushan MS7.0 earthquake. Acta Seismologica Sinica, 36(1): 42-58. DOI: 10.3969/j.issn.0253-3782.2014.01.004.
Citation: Wang Linying, Li Yan’e, Zheng Xuyao, Wang Shengwen. 2014: Temporal variation of vP/vS at single seismic station before the 2013 Lushan MS7.0 earthquake. Acta Seismologica Sinica, 36(1): 42-58. DOI: 10.3969/j.issn.0253-3782.2014.01.004.
shu

Temporal variation of vP/vS at single seismic station before the 2013 Lushan MS7.0 earthquake

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

More Information
  • Received Date: May 15, 2013
  • Revised Date: September 04, 2013
  • Published Date: December 31, 2013
    Graphical Abstract
    • Abstract
  • Based on the seismic phase data recorded by Sichuan Digital Seismic Network from January of 2001 to July of 2013, this study analyzes the spatio-temporal variation of wave velocity ratio vP/vS before the Lushan MS7.0 earthquake by using Wadati method of single station and multi-earthquake. To ensure the accuracy and stability of the calculated results, we carefully winnow the data. Moreover, we compare the wave velocity ratios calculated by using phase data recorded by the stations with different azimuths and different epicentral distances, so that we discuss the size of potential seismogenic body for future earthquakes. Our results show that, in the southern Longmenshan fault and its surrounding area, there was an obvious decrease in wave velocity ratio at five stations (XJI, MDS, YGD, HMS and WMP) before the Lushan MS7.0 earthquake. In particular, for the four stations (XJI, MDS, YGD and HMS), there had been an obvious vP/vS decrease for 3.5 years before the Lushan earthquake; except the station XJI, at other three stations appeared a recovery of vP/vS ratio one year before the earthquake. The anomalous characteristics are largely different for the stations EMS and WMP, indicating some complexity. Tracing the temporal variations of vP/vS, it is also found that the extent of the region with anomalous wave velocity ratio tends to concentrate at the future epicenter and its surrounding regions.
    • FullText(HTML)
    • References (26)
  • 蔡静观, 张喜玲. 1999. 丽江、 宁蒗强震波速比时空演化过程和数值分析[J]. 中国地震, 15 (1): 82-91

    Cai J G, Zhang X L. 1999. Time-space evolution pattern and numerical analysis of wave velocity ratio before Lijiang and Ninglang earthquakes[J]. Earthquake Research in China, 15 (1): 82-91 (in Chinese)
    戴维乐. 1991. 菏泽5.9级地震前小震波速比时空变化特征[J]. 西北地震学报, 13 (1): 30-34

    Dai W L. 1991. Temporal and spatial anomaly characteristics of wave velocity ratios of small earthquakes before the Heze earthquake with MS5.9[J]. Northwestern Seismological Journal, 13 (1): 30-34 (in Chinese)
    刁桂岺, 周仕勇, 刘杰, 张学民, 李晓峰, 张民. 2005. 岫岩地震序列的平均波速比前兆异常[J]. 华北地震科学, 23 (4): 1-5

    Diao G L, Zhou S Y, Liu J, Zhang X M, Li X F, Zhang M. 2005. Anomalies of mean vP/vS ratio in the series of Xiuyan earthquake[J]. North China Earthquake Sciences, 23 (4): 1-5 (in Chinese)
    冯德益, 王周元, 顾瑾平, 盛国英, 李克龙. 1980. 1976年四川省松潘-平武地震前波速比的异常变化[J]. 地震学报, 2 (1): 43-54

    Feng D Y, Wang Z Y, Gu J P, Sheng G Y, Li K L. 1980. Anomalous variations of seismic velocity ratio before the Songpan-Pingwu earthquake (M=7.2) of 1976[J]. Acta Seismologica Sinica, 2 (1): 43-54 (in Chinese)
    冯德益. 1981. 地震波速异常[M]. 北京: 地震出版社: 34-37, 55-61

    Feng D Y. 1981. Velocity Anomalies of Seismic Waves[M]. Beijing: Seismological Press: 34-37, 55-61 (in Chinese)
    冯锐, 庞庆衍, 傅征祥, 郑建中, 孙次昌, 李宝祥. 1976. 海城地震前后地震波速比的变化[J]. 地球物理学报, 19 (4): 295-305

    Feng R, Pang Q Y, Fu Z X, Zheng J Z, Sun C C, Li B X. 1976. Variations of vP/vS before and after the Haicheng earthquake of 1975[J]. Acta Geophysica Sinica, 19 (4): 295-305 (in Chinese)
    顾瑾平, 盛国英. 1983. 多台求波速比方法的再探讨[J]. 西北地震学报, 5 (4): 95-98

    Gu J P, Sheng G Y. 1983. A method for further studying the seismic velocity ratio anomalies[J]. Northwestern Seismological Journal, 5 (4): 95-98 (in Chinese)
    姜秀娥, 陈非比. 1981. 用四震相法讨论唐山大震的波速异常[J]. 地球物理学报, 24 (1): 107-116

    Jiang X E, Chen F B. 1981. The discussion of velocity change of Tangshan earthquake using simple four phase method[J]. Acta Geophysica Sinica, 24 (1): 107-116 (in Chinese)
    黎明晓, 刘杰. 2006. 云南地区地震序列的波速比(vP/vS)异常的研究[J]. 地震, 26 (1): 26-34

    Li M X, Liu J. 2006. Study on velocity ratio (vP/vS) anomaly of earthquake sequences in Yunnan region[J]. Earthquake, 26 (1): 26-34 (in Chinese)
    李善邦. 1981. 中国地震[M]. 北京: 地震出版社: 522

    Li S B. 1981. Earthquake Research in China[M]. Beijing: Seismological Press: 522 (in Chinese)
    李永莉, 毛惠玲, 苏有锦. 2009. 滇西地区近期强震的波速比异常演化[J]. 地震研究, 32 (1): 6-11

    Li Y L, Mao H L, Su Y J. 2009. Evolution of wave velocity ratio anomaly before current strong earthquakes in west Yunnan[J]. Journal of Seismological Research, 32 (1): 6-11 (in Chinese)
    龙海英, 聂小红, 唐兰兰. 2011. 新疆乌苏5.1级地震前波速比异常震例研究[J]. 地震研究, 34 (2): 126-130

    Long H Y, Nie X H, Tang L L. 2011. Study of the abnormity of wave velocity ratio before MS5.1 Wusu earthquake in Xinjiang[J]. Journal of Seismological Research, 34 (2): 126-130 (in Chinese)
    姚家骏, 王培玲, 刘文邦. 2012. 玉树7.1级地震前后波速比变化特征分析[J]. 高原地震, 24 (3): 6-10

    Yao J J, Wang P L, Liu W B. 2012. Analysis on the variation of wave velocity ratio before and after Yushu MS7.1 earthquake[J]. Plateau Earthquake Research, 24 (3): 6-10 (in Chinese)
    王林瑛, 郭永霞, 刘芳, 蒋长胜. 2008. 文安地震前后首都圈分区波速比研究[J]. 地震学报, 30 (3): 240-253

    Wang L Y, Guo Y X, Liu F, Jiang C S. 2008. Temporal vP/vS variation characteristics in different zone of China's Capital area before and after 2006 Wen'an earthquake[J]. Acta Seismologica Sinica, 30 (3): 240-253 (in Chinese)
    张天中, 高阿甲, 黄蓉良, 刘庆芳. 2000. 震源介质参数的连续监测及其在张北地震前的变化[J]. 地震, 20 (增刊): 154-161
    Zhang T Z, Gao A J, Huang R L, Liu Q F. 2000. Continuous monitoring of focal medium parameters and their changed before Zhangbei earthquake[J]. Earthquake, 20 (Suppl. ): 154-161 (in Chinese)张小涛, 吕坚, 马广庆, 靳玉科, 张建国. 2006. 九江-瑞昌地震序列的波速比特征研究[J]. 华北地震科学, 24 (4): 36- 40

    Zhang X T, Lü J, Ma G Q, Jin Y K, Zhang J G. 2006. Characteristics of vP/vS ratio in the series of Jiujiang-Ruichang earthquake[J]. North China Earthquake Sciences, 24 (4): 36-40 (in Chinese)
    邹振轩, 李金龙, 俞铁宏. 2006. 应用多台和达法测定温州珊溪水库地区地震的平均波速比[J]. 地震, 26 (4): 133-137

    Zou Z X, Li J L, Yu T H. 2006. Determining average seismic wave velocity ratios (vP/vS) in Shanxi reservoir of Wenzhou region by using multi-station method[J]. Earthquake, 26 (4): 133-137 (in Chinese)
    Baisch S, Bokelmann G. 2001. Seismic waveform attributes before and after the Loma Prieta earthquake: Scattering change near the earthquake and temporal recovery[J]. J Geophys Res, 106 (B8): 16323-16337
    Li Y G, Chen P, Cochran E S, Vidale J E and Burdette T. 2006. Seismic evidence for rock damage and healing on the San Anderas fault associated with the 2004 M6.0 Parkfield earthquake[J]. Bull Seismol Soc Am, 96 (4B): 349-363
    Li Y G, Chen P, Cochran E S, Vidale J E. 2007. Seismic velocity variations on the San Andreas fault caused by the 2004 M6 Parkfield earthquake and their implications[J]. Earth Planet Space, 59 : 21-31
    Niu F L, Silver P G, Daley T M, Cheng X, Majer E L. 2008. Preseismic velocity changes observed from active source monitoring at the Parkfield SAFOD drill site[J]. Nature, 454 : 204-209
    Nur A. 1972. Dilatancy, pore fluids, and premonitory variations of tS/tP travel times[J]. Bull Seismol Soc Am, 62 (5): 1217-1222
    Poupinet G, Ellsworth W, Frechet J. 1984. Monitoring velocity variations in the crust using earthquake doublet: An application to the Calaveras fault, California[J]. J Geophys Res, 89 (B7): 5719-5731.
    Ratdomopurbo A, Poupinet G. 1995. Monitoring a temporal change of seismic velocity in a volcano: Application to the 1992 eruption of Mt.Merapi (Indonesia)[J]. Geophys Res Lett, 22 (7): 775-778
    Schaff D P, Beroza G C. 2004. Coseismic and postseismic velocity changes measured by repeating earthquake[J]. J Geophys Res, 109 (B10): B10302
    Whitcomb J H, Garmany J D, Anderson D L. 1973. Earthquake prediction: Variation of seismic velocities before the San-Fernando earthquake[J]. Science, 180 (4086): 632-635
    • Related Articles

Catalog

    Get Citation
    PDF
    XML
    Article views (599) PDF downloads (29) Cited by()
    Turn off MathJax
    Article Contents
    Abstract
    References

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

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return