Acta Geodaetica et Cartographica Sinica >

2016 , Vol. 45 >Issue 4: 385 - 395

DOI: https://doi.org/10.11947/j.AGCS.2016.20150384

The Pre-earthquake Ionosphere Anomaly of the 2015 Nepal Earthquake

  • YAO Yibin ,
  • ZHAI Changzhi ,
  • KONG Jian ,
  • LIU Lei
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  • 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    2. Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan 430079, China;
    3. Collaborative Innovation Center for Geospatial Technology, Wuhan 430079, China;
    4. Chinese Antarctic Center of Surveying and Mapping, Wuhan 430079, ChinaAbstract

Received date: 2015-07-20

  Revised date: 2015-12-16

  Online published: 2016-04-28

Supported by

The National Natural Science Foundation of China(Nos.41274022;41574028);Natural Science Foundation for Distinguished Young Scholars of Hubei Province of China(No.2015CFA036)

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Abstract

An ionospheric anomaly detection method based on singular spectrum analysis is introduced firstly.With the TEC time sequence of GIM grid points around the Nepal earthquake epicenter, the positive ionospheric anomalies are determined on 23 April around the eastern region of the epicenter. Using the two-dimensional ionospheric anomalies map, further analysis is taken to comfirm the ionospheric positive anomaly area distributing from 25°N to 37.5°N, 90°E to 110°E, and the anomaly time ranging UT9:00 to UT15:00 on 23 April, 2015. The data of crustal movement observation network of China issued to analyze the STEC fluctuation changes of IPP(ionosphere piece piont) trajectories in the abnormal area, and it is found that on 23 April the STEC values of IPP trajectories passing through the abnormal area are obviously larger than the ones a few days after and before the earthquake time, and returned to the normal level after leaving the abnormal area. Lastly, the CIT (computerized ionosphere tomography) method is used to present the 3D ionospheric anomalies distribution, and it is found that, at UT9:00-UT15:00 on 23 April the peak of ionospheric positive anomaly on the eastern region of the epicenter is approximately at (30°N, 115°E), with the altitude ranging from 100 to 500 km. Also the anomalous peak varies with height is consistent with ionosphere density vertical distribution.

Key words： seismic-ionospheric disturbance; singular spectrum analysis; STEC; CIT

Cite this article

YAO Yibin , ZHAI Changzhi , KONG Jian , LIU Lei . The Pre-earthquake Ionosphere Anomaly of the 2015 Nepal Earthquake[J]. Acta Geodaetica et Cartographica Sinica, 2016 , 45(4) : 385 -395 . DOI: 10.11947/j.AGCS.2016.20150384

References

[1] 祝芙英,吴云,林剑,等. 汶川地震前电离层VTEC的异常响应[J]. 地震学报, 2009, 31(2):180-187. ZHU Fuying, WU Yun, LIN Jian, et al. Anomalous Response of Ionospheric VTEC before the Wenchuan Earthquake[J]. Acta Seismologica Sinica, 2009, 31(2):180-187.
[2] LEONARD R S, BARNES JR R A. Observation of Ionospheric Disturbances Following the Alaska Earthquake[J]. Journal of Geophysical Research, 1965, 70(5):1250-1253.
[3] ANTSELEVICH M G. The Influence of Tashkent Earthquake on the Earth's Magnetic Field and the Ionosphere[C]//Tashkent Earthquake 26 April 1966. Tashkent:FAN, 1971:187-188.
[4] WEAVER P F, YUEN P C, PROLSS G W. Acoustic Coupling into the Ionosphere from Seismic Waves of the Earthquake at Kurile Islands on August 11, 1969[J]. Nature, 1970, 226(5252):1239-1241.
[5] PULINETS S A. Seismic Activity as a Source of the Ionospheric Variability[J]. Advances in Space Research, 1998, 22(6):903-906.
[6] PULINETS S A. Natural Radioactivity, Earthquakes, and the Ionosphere[J]. EOS Transactions American Geophysical Union, 2007, 88(20):217-218.
[7] LIU J Y, CHEN Y I, CHUO Y J, et al. Variations of Ionospheric Total Electron Content during the Chi Chi Earthquake[J]. Geophysical Research Letters, 2001, 28(7):1383-1386.
[8] 丁鉴海, 索玉成, 余素荣. 地磁场与电离层异常现象及其与地震的关系[J]. 空间科学学报, 2005, 25(6):536-542. DING Jianhai, SUO Yucheng, YU Surong. Phenomena of Geomagnetic and Ionospheric Anomalies and Their Relation to Earthquakes[J]. Chinese Journal of Space Science, 2005, 25(6):536-542.
[9] CALAIS E, MINSTER J B. GPS Detection of Ionospheric Perturbations Following the January 17, 1994, Northridge Earthquake[J]. Geophysical Research Letters, 1995, 22(9):1045-1048.
[10] 马新欣, 林湛, 陈化然, 等. 基于GPS和COSMIC数据分析汶川地震TEC和N<i>mF2扰动[J]. 地球物理学报, 2014, 57(8):2415-2422. MA Xinxin, LIN Zhan, CHEN Huaran, et al. Analysis on Ionospheric Perturbation of TEC and N<i>mF2 Based on GPS and COSMIC Data before and after the Wenchuan Earthquake[J]. Chinese Journal of Geophysics, 2014, 57(8):2415-2422.
[11] AKHOONDZADEH M, PARROT M, SARADJIAN M R. Electron and Ion Density Variations before Strong Earthquakes (M>6.0) Using DEMETER and GPS Data[J]. Natural Hazards and Earth System Sciences, 2010, 10(1):7-18.
[12] 祝芙英, 吴云, 林剑, 等. 汶川Ms8.0地震前电离层TEC异常分析[J]. 大地测量与地球动力学, 2008, 28(6):16-21. ZHU Fuying, WU Yun, LIN Jian, et al. Study on Ionospheric TEC Anomaly Prior to Wenchuan Ms8.0 Earthquake[J]. Journal of Geodesy and Geodynamics, 2008, 28(6):16-21.
[13] 姚宜斌, 陈鹏, 吴寒, 等. 2011年3月11日日本地震震前电离层异常变化分析[J]. 科学通报, 2012, 57(5):355-365. YAO Yibin, CHEN Peng, WU Han, et al. Analysis of Ionospheric Anomalies before the 2011 Mw9.0 Japan Earthquake[J]. Chinese Science Bulletin, 2012, 57(5):500-510.
[14] CAHYADI M N, HEKI K. Ionospheric Disturbances of the 2007 Bengkulu and the 2005 Nias Earthquakes, Sumatra, Observed with a Regional GPS Network[J]. Journal of Geophysical Research, 2013, 118(4):1777-1787.
[15] HEKI K. Ionospheric Electron Enhancement Preceding the 2011 Tohoku Oki Earthquake[J]. Geophysical Research Letters, 2011, 38(17):L17312.
[16] LE H, LIU J Y, LIU L. A Statistical Analysis of Ionospheric Anomalies before 736 M6.0+ Earthquakes During 2002-2010[J]. Journal of Geophysical Research, 2011, 116(A2):A02303.
[17] 闻德保. 基于GPS的电离层层析算法及其应用研究[D]. 武汉:中国科学院测量与地球物理研究所, 2007. WEN Debao. Investigation of GPS-based Ionospheric Tomographic Algorithms and Their Applications[D]. Wuhan:Institute of Geodesy and Geophysics Chinese Academy of Sciences, 2007.
[18] 杨剑, 吴云, 周义炎. 基于电离层层析成像技术探测汶川地震前电离层异常[J]. 大地测量与地球动力学, 2011, 31(1):9-14. YANG Jian, WU Yun, ZHOU Yiyan. Probe into Seismo-ionospheric Anomaly of Wenchuan Ms8.0 Earthquake Based on Computerized Ionospheric Tomography[J]. Journal of Geodesy and Geodynamics, 2011, 31(1):9-14.
[19] 邹玉华. GPS地面台网和掩星观测结合的时变三维电离层层析[D]. 武汉:武汉大学, 2004. ZOU Yuhua. A Study of Time-dependent 3-D Ionospheric Tomography with Ground-based GPS Network and Occultation Observations[D]. Wuhan:Wuhan University, 2004.
[20] 孟泱, 安家春, 王泽民, 等. 基于GPS的南极电离层电子总含量空间分布特征研究[J]. 测绘学报, 2011, 40(1):37-40. MENG Yang, AN Jiachun, WANG Zemin, et al. Spatial Distribution of Antarctic Ionosphere TEC Based on GPS[J]. Acta Geodaetica et Cartographica Sinica, 2011, 40(1):37-40.
[21] RIUS A, RUFFINI G, CUCURULL L. Improving the Vertical Resolution of Ionospheric Tomography with GPS Occultations[J]. Geophysical Research Letters, 1997, 24(18):2291-2294.
[22] THAMPI S V, LIN C, LIU H, et al. First Tomographic Observations of the Midlatitude Summer Nighttime Anomaly over Japan[J]. Journal of Geophysical Research, 2009, 114(A10):A10318.
[23] KUNITSYN V E, NESTEROV I A, PADOKHIN A M, et al. Ionospheric Radio Tomography Based on the GPS/GLONASS Navigation Systems[J]. Journal of Communications Technology and Electronics, 2011, 56(11):1269-1281.
[24] SEEMALA G K, YAMAMOTO M, SAITO A, et al. Three-dimensional GPS Ionospheric Tomography over Japan Using Constrained Least Squares[J]. Journal of Geophysical Research, 2014, 119(4):3044-3052.
[25] 王解先, 连丽珍, 沈云中. 奇异谱分析在GPS站坐标监测序列分析中的应用[J]. 同济大学学报(自然科学版), 2013, 41(2):282-288. WANG Jiexian, LIAN Lizhen, SHEN Yunzhong. Application of Singular Spectral Analysis to GPS Station Coordinate Monitoring Series[J]. Journal of Tongji University (Natural Science), 2013, 41(2):282-288.
[26] 杜品仁, 蒋和荣, 郭兼善. 电离层异常能否作为地震前兆的研究[J]. 地震, 1998, 18(2):119-126. DU Pinren, JIANG Herong, GUO Jianshan. Research on Possibility of Ionospheric Anomalies as an Earthquake Precursor[J]. Earthquake, 1998, 18(2):119-126.
[27] LIU J Y, CHUO Y J, SHAN S J, et al. Pre-earthquake Ionospheric Anomalies Registered by Continuous GPS TEC Measurements[J]. Annales Geophysicae, 2004, 22(5):1585-1593.
[28] OYAMA K I, KAKINAMI Y, LIU J Y, et al. Reduction of Electron Temperature in Low-latitude Ionosphere at 600 km before and after Large Earthquakes[J]. Journal of Geophysical Research, 2008, 113(A11):A11317.
[29] KIM V P, HEGAI V V. A Possible Presage of Strong Earthquakes in the Night-time Mid-latitude F2 Region Ionosphere[C]//Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes. Tokyo:Terra Scientific Publishing Company, 1999:619-627.
[30] 李征航,黄劲松.GPS测量与数据处理[M].武汉:武汉大学出版社, 2005:102-105. LI Zhenghang, HUANG Jinsong. GPS Surveying and Data Processing[M]. Wuhan:Wuhan University Press, 2005:102-105.
[31] 刘经南, 陈俊勇, 张燕平, 等. 广域差分GPS原理和方法[M]. 北京:测绘出版社, 1999. LIU Jingnan, CHEN Junyong, ZHANG Yanping, et al. Theory and Technique of Wide Area Differential GPS[M]. Beijing:Surveying and Mapping Press, 1999.
[32] 袁运斌. 基于GPS的电离层监测及延迟改正理论与方法的研究[D]. 武汉:中国科学院测量与地球物理研究所, 2002. YUAN Yunbin. Study on Theories and Methods of Correcting Ionospheric Delay and Monitoring Ionosphere Based on GPS[D]. Wuhan:Institute of Geodesy and Geophysics of Chinese Academy of Sciences, 2002.
[33] 张宝成, 欧吉坤, 袁运斌, 等. 利用非组合精密单点定位技术确定斜向电离层总电子含量和站星差分码偏差[J]. 测绘学报, 2011, 40(4):447-453. ZHANG Baocheng, OU Jikun, YUAN Yunbin, et al. Calibration of Slant Total Electron Content and Satellite-receiver's Differential Code Biases with Uncombined Precise Point Positioning Technique[J]. Acta Geodaetica et Cartographica Sinica, 2011, 40(4):447-453.
[34] 张宝成, 欧吉坤, 李子申, 等. 利用精密单点定位求解电离层延迟[J]. 地球物理学报, 2011, 54(4):950-957. ZHANG Baocheng, OU Jikun, LI Zishen, et al. Determination of Ionospheric Observables with Precise Point Positioning[J]. Chinese Journal of Geophysics, 2011, 54(4):950-957.
[35] 李子申. GNSS/Compass电离层时延修正及TEC监测理论与方法研究[D]. 武汉:中国科学院测量与地球物理研究所, 2012. LI Zishen. Study on the Mitigation of Ionospheric Delay and the Monitoring of Global Ionospheric TEC Based on GNSS/Compass[D]. Wuhan:Institute of Geodesy and Geophysics Chinese Academy of Sciences, 2012.
[36] PRYSE S E, KERSLEY L, MITCHELL C N, et al. A Comparison of Reconstruction Techniques Used in Ionospheric Tomography[J]. Radio Science, 1998, 33(6):1767-1779.
[37] CHOI B K, PARK J U, LEE S J. Ionospheric Anomalies Observed over South Korea Preceding the Great Tohoku Earthquake of 2011[J]. Advances in Space Research, 2012, 50(3):311-317.
[38] HAO Y Q, XIAO Z, ZHANG D H. Teleseismic Magnetic Effects (TMDs) of 2011 Tohoku Earthquake[J]. Journal of Geophysical Research, 2013, 118(6):3914-3923.
[39] 张学民, 刘静, 申旭辉, 等. 2005年3月28日苏门答腊8.6级地震前的电离层扰动[J]. 地球物理学报, 2010, 53(3):567-575. ZHANG Xuemin, LIU Jing, SHEN Xuhui, et al. Ionospheric Perturbations Associated with the M8.6 Sumatra Earthquake on 28 March 2005[J]. Chinese Journal of Geophysics, 2010, 53(3):567-575.
[40] KLIMENKO M V, KLIMENKO V V, ZAKHARENKOVA I E, et al. Formation Mechanism of Great Positive TEC Disturbances Prior to Wenchuan Earthquake on May 12, 2008[J]. Advances in Space Research, 2011, 48(3):488-499.
[41] HEKI K, ENOMOTO Y. Preseismic Ionospheric Electron Enhancements Revisited[J]. Journal of Geophysical Research, 2013, 118(10):6618-6626.
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