Advanced Search
Yao Li, Chen Huaran, He Yufei. 2013: The signal to noise ratio disturbance of ionospheric VLF radio signal before the 2010 Yushu MS7.1 earthquake. Acta Seismologica Sinica, 35(3): 390-399. DOI: 10.3969/j.issn.0253-3782.2013.03.010
Citation: Yao Li, Chen Huaran, He Yufei. 2013: The signal to noise ratio disturbance of ionospheric VLF radio signal before the 2010 Yushu MS7.1 earthquake. Acta Seismologica Sinica, 35(3): 390-399. DOI: 10.3969/j.issn.0253-3782.2013.03.010
shu

The signal to noise ratio disturbance of ionospheric VLF radio signal before the 2010 Yushu MS7.1 earthquake

  • 1.

    China Erathquake Networks Center, Beijing 100045, China

  • 2.

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

More Information
  • Received Date: July 02, 2012
  • Revised Date: December 09, 2012
  • Published Date: April 30, 2013
    Graphical Abstract
    • Abstract
  • In Yushu, Qinghai province, a strong earthquake took place at 23:49:38 UT on April 13, 2010, with a magnitude MS7.1. Based on ICE experiments onboard the DEMETER satellite, the VLF signal in 10—20 kHz radiated by three ground transmitters and received on board of DEMETER satellite revealed the attenuation of the signal to noise ratio averaged value in the region with a radius of 500 km from the earthquake epicenter in a revisited period of DEMETER just prior to the mainshock. On the other hand, there were no similar phenomena in 2009; on the contrary we found an ascending SNR in the corresponding time interval and spatial position. These ionospheric anomalies before the Yushu earthquake are highly regarded as resulting from the seismo-ionospheric coupling.
    • FullText(HTML)
    • References (5)
  • 何宇飞, 杨冬梅, 陈化然, 钱家栋, 朱荣, Parrot M. 2009. DEMETER卫星探测到可能与汶川地震有关的地面VLF发射站信号的信噪比变化[J]. 中国科学: D辑, 39(4): 403-412.
    Erthelier J J, Godefroy M, Leblanc F, Malingre M, Menvielle M, Lagoutte D, Brochot J Y, Colin F, Elie F, Legendre C, Zamora P, Benoist D, Chapuis Y, Artru J, Pfaff R. 2006. ICE, the electric field experiment on DEMETER[J]. Planet Space Sci, 54(5): 456-471.
    Inan U S, Helliwell R A. 1982. DE-1 observations of VLF transmitter signals and wave-particle interaction in the magnetosphere[J]. Geophys Res Lett, 9(9): 917-920.
    Molchanov O A. 2004. On the origin of low-and middle-latitude ionospheric turbulence[J]. Phys Chem Earth, 29(4-9): 559-567.
    Molchanov O A, Rozhnoi A, Solovieva M, Akentieva O, Berthelier J J, Parrot M, Lefeuvre F, Biagi P F, Castellana L, Hayakawa M. 2006. Global diagnostics of the ionospheric perturbations related to the seismic activity using the VLF radio signals collected on the EMETER satellite[J]. Nat Hazards Earth Sys, 6(5): 745-753.
    • Related Articles

  • Related Articles

    Xu Jiren, Li Haibing, Zeng Xiangzhi, Zhao Zhixin. 2022: Seismic waveforms and their signal-to-noise ratios of borehole observation in Donghai station，Jiangsu Province. Acta Seismologica Sinica, 44(6): 1007-1018. DOI: 10.11939/jass.20220195
    Zhang Hongcai, Liao Shirong, Chen Zhiyong, Huang Lingzhu. 2021: An automatic S phase picking algorithm for local earthquake events. Acta Seismologica Sinica, 43(3): 338-349. DOI: 10.11939/jass.20200112
    Zhang Ayao, Fan Guangchao, Wang Minchao, Shen Xufeng, Zhang Chengliu, Lu Na, Cui Jiajia. 2018: Amplitude characteristic analysis of noise and signal from the stations deployed at different depths. Acta Seismologica Sinica, 40(4): 440-447. DOI: 10.11939/jass.20170150
    Lin Binhua, Jin Xing, Li Jun, Cai Huiteng, Liao Shirong, Chen Huifang. 2017: Station network ambient noise level evaluation and its influence on air gun source excitation effect. Acta Seismologica Sinica, 39(3): 330-342. DOI: 10.11939/jass.2017.03.003
    Yan Wenhua, Zhang Yuansheng, Qin Manzhong, Liu Xuzhou, Guo Yingxia. 2016: Characteristics of ambient seismic noise of broadband seismic array in the southeastern Gansu region. Acta Seismologica Sinica, 38(5): 719-727.
    Xinyan Ouyang, Shen Xuhui. 2015: A method for pre-processing ULF electric field disturbances observed by DEMETER and its case application analysis. Acta Seismologica Sinica, 37(5): 820-829. DOI: 10.11939/jass.2015.05.010
    Geng Guanshi, Yu Yanxiang. 2015: Influence of magnitude and hypocentral distance on H/V spectral ratio of seismic signal. Acta Seismologica Sinica, 37(3): 420-428. DOI: 10.11939/jass.2015.03.005
    Zhang Hongcai, Jin Xing. 2014: Reliability research of earthquake early warning information. Acta Seismologica Sinica, 36(4): 615-631. DOI: 10.3969/j.issn.0253-3782.2014.04.008
    2010: A preliminary study on characteristics of average power spectrum density of LF/MF electric field observed by DEMETER satellite. Acta Seismologica Sinica, 32(4): 476-489.
    LI BAOXIANG, GOU SHAOREN, NI DALAI, TIAN ZHANPENGcom . 1982: A SEISMIC EQUIPMENT FOR SHALLOW EXPLORATION WITH ENHANCED SIGNAL TO NOISE RATIO, TYPE ZD-1. Acta Seismologica Sinica, 4(3): 308-315.

Catalog

    Get Citation
    PDF
    XML
    Article views (511) PDF downloads (4) 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