唐山地区波速比变化特征研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Change Characteristics of Wave Velocity Ratio in Tangshan Area 作者：王亚茹 ; 宋昭 ; 刘晓丹 ; 郭蕾 ; 王妍 ; 王时 ; 宫猛 ; 王想 英文作者：WANG Yaru;SONG Zhao;LIU Xiaodan;GUO Lei;WANG Yan;WANG Shi;GONG Meng;WANG Xiang;Hebei Earthquake Agency; 关键词：唐山 ; 地震 ; 波速比 ; 台站 英文关键词：Tangshan;;earthquake;;wave velocity ratio;;station 中文刊名：大地测量与地球动力学 英文刊名：Journal of Geodesy and Geodynamics 机构：河北省地震局; 出版日期：2019-07-15 出版单位：大地测量与地球动力学 年：2019 期：07 基金：河北省地震科技星火计划(DZ20190416005,DZ20170508026,DZ20170109002);; 中国地震局地震科技星火计划(XH18008Y,XH17007)~~ 语种：中文; 页：30-34 页数：5 CN：42-1655/P ISSN：1671-5942 分类号：P315

摘要

选取唐山地区2008～2018年震相数据,利用单台多震和达法和多台多震和达法分别计算波速比,结合研究区内的地震活动对波速比的变化特征进行研究。结果显示,多台多震和达法得到的波速比结果较为稳定,而单台多震和达法得到的结果变化幅度大,显示更多细节;唐山地区M_L≥4.5地震发生前单台波速比存在不同程度的异常,异常台站的方位与地震具有一定的对应性。
        We select the seismic phase reports of Tangshan region by Hebei digital seismic network from 2008 to 2018 and calculate the wave velocity ratio by multi station-multi earthquake method and single station-multi earthquake method. We then analyze the characteristics of wave velocity ratio change combined with seismic activity. The results show that using the velocity ratio by multi station-multi earthquake method is more stable, but the results by the single station-multi earthquake method show more detail, and low value anomaly appears in varying degrees before M_L≥4.5 earthquakes in the Tangshan region. The locations of abnormal stations correspond to earthquakes, to some extent.

引文

[1] 李艳娥,王林瑛,宋美卿,等.从波速比变化看汶川与芦山地震的孕震过程[J].大地测量与地球动力学,2016,36(11):991-997(Li Yan’e,Wang Linying,Song Meiqing,et al.Study of the Seismogenic Process from Wenchuan to the Lushan Earthquake Based on Wave Velocity Ratio Temporal Variation[J].Journal of Geodesy and Geodynamics,2016,36(11):991-997)
    [2] 李艳娥,王林瑛,郑需要.汶川地震前后波速比变化特征的再研究[J].地震学报,2014,36(3):425-432(Li Yan’e,Wang Linying,Zheng Xuyao.Restudy of the Variation of vP/vS before and after the Wenchuan Earthquake[J].Acta Seismologica Sinica,2014,36(3):425-432)
    [3] 李丽,宋美琴,吴昊昱,等.2010年河津MS4.8地震前后单台波速比变化特征分析[J].地震地磁观测与研究,2016,37(1):8-14(Li Li,Song Meiqin,Wu Haoyu,et al.Temporal Variation of vP/vS at Single Seismic Station before and after Hejin MS4.8 Earthquake in the Year 2010[J].Seismological and Geomagnetic Observation and Research,2016,37(1):8-14 )
    [4] 王亚茹,王想,宫猛,等.河北及邻区平均波速比变化特征分析[J].中国地震,2016,32(4):747-755(Wang Yaru,Wang Xiang,Gong Meng,et al.The Average Wave Velocity Ratio Analysis of the Characteristics in Hebei Province and Its Adjacent Areas[J].Earthquake Research in China,2016,32(4):747-755)
    [5] 虢顺民,李志义,程绍平,等.唐山地震区域构造背景和发震模式的讨论[J].地质科学,1977,12(4):305-321(Guo Shunmin,Li Zhiyi,Cheng Shaoping,et al.Discussion on the Regional Structural Background and the Seismogenic Model of the Tangshan Earthquake [J].Scientia Geologica Sinica ,1977,12(4):305-321)
    [6] 王峻,刘启元,陈九辉,等.首都圈地区的地壳厚度及泊松比[J].地球物理学报,2009,52(1):57-66(Wang Jun,Liu Qiyuan,Chen Jiuhui,et al.The Crustal Thickness and Poisson’s Ratio Beneath the Capital Circle Region [J].Chinese Journal of Geophysics,2009,52(1):57-66)
    [7] 董一兵.沉积盆地近震转换波及其在震源深度测定中的应用[D].合肥:中国科学技术大学,2017(Dong Yibing.Locally Converted Waves and Applications in Resolving Focal Depth in Sedimentary Basins[D].Hefei:University of Science and Technology of China,2017)
    [8] 张跃刚,王玉珍,尹宝军,等.2012年5月28日河北省唐山4.8级地震[J].中国地震,2013,29(2):219-229(Zhang Yuegang,Wang Yuzhen,Yin Baojun,et al.The Tangshan MS4.8 Earthquake on May 28,2012 in Hebei Province[J].Earthquake Research in China,2013,29(2):219-229)
    [9] 施行觉,赵闯,杨映希,等.岩石临破裂前波速变化特征的实验研究[J].地球物理学报,2012,55(10):3 386-3 392(Shi Xingjue ,Zhao Chuang ,Yang Yingxi ,et al.Experimental Study of Velocity Characteristic before Rock Fracture[J].Chinese Journal Geophysics,2012 ,55(10):3 386-3 392)
    [10] 王林瑛,李艳娥,李芳,等.汶川地震前后地震波速比和视速度变化特征的研究[J].地震学报,2011,33(1):1-14(Wang Linying,Li Yan’e,Li Fang,et al.Temporal Variation of vP/vS,vP and vS before and after 2008 Wenchuan Earthquake[J].Acta Seismologica Sinica,2011,33(1):1-14)