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SNR changes of VLF radio signals detected onboard the DEMETER satellite and their possible relationship to the Wenchuan earthquake 被引量：8

SNR changes of VLF radio signals detected onboard the DEMETER satellite and their possible relationship to the Wenchuan earthquake
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摘要 Here we used the VLF signal data received by the DEMETER satellite, transmitted from various ground VLF transmitters which are located around China, to study the changes in the signal to noise ratio (SNR) before and after the Wenchuan earthquake, which had a magnitude of 8.0. We also found that the SNRs of different frequency signals decreased significantly over the epicenter region before the earthquake, and reverted to their original levels after the earthquake. This phenomenon may be related to the earthquake. Here we used the VLF signal data received by the DEMETER satellite, transmitted from various ground VLF transmitters which are located around China, to study the changes in the signal to noise ratio (SNR) before and after the Wenchuan earthquake, which had a magnitude of 8.0. We also found that the SNRs of different frequency signals decreased significantly over the epicenter region before the earthquake, and reverted to their original levels after the earthquake. This phenomenon may be related to the earthquake.
作者 M. Parrot
机构地区 Laboratory of Physical and Chemical Environment
出处 《Science China Earth Sciences》 SCIE EI CAS 2009年第6期754-763,共10页 中国科学（地球科学英文版）
基金 Special Foundation of Basic Research from Institute of Geophysics, China Earth-quake Administration (Grant No. DQJB08Z08) National Key Technology R & D Program (Grant No. 2008BAC35B01)
关键词 SNR VLF WENCHUAN earthquake DEMETER satellite seismo-ionospheric phenomenon SNR VLF Wenchuan earthquake DEMETER satellite seismo-ionospheric phenomenon
分类号 P315.7 [天文地球—地震学]
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参考文献11

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Science China Earth Sciences
2009年 第6期

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