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    • 10. 发明授权
    • Sensors for passive electroseismic and seismoelectric surveying
    • 无源电力和地震测量传感器
    • US08633700B1
    • 2014-01-21
    • US13785372
    • 2013-03-05
    • Robert EnglandArthur ThompsonAlan KatzMohammad RahmanNaga P. Devineni
    • Robert EnglandArthur ThompsonAlan KatzMohammad RahmanNaga P. Devineni
    • G01V3/00
    • G01V3/12G01V11/007
    • An apparatus includes a conductive plate operable to generate a reference signal and a shield configured to surround at least a portion of the conductive plate and to attenuate at least a portion of a horizontal electromagnetic signal. The apparatus also includes an electrode configured to be electrically coupled to the shield and to a ground, where the electrode is responsive to a vertical electromagnetic signal, and the vertical electromagnetic signal generated by a subsurface earth formation in response to an electroseismic or seismoelectric conversion of a passive electromagnetic source signal. The apparatus also includes an amplifier comprising a first input and a second input, where the first input is configured to electrically couple to the conductive plate and the second input is configured to electrically couple to the electrode.
    • 一种装置包括可操作以产生参考信号的导电板和被配置为围绕导电板的至少一部分并且衰减水平电磁信号的至少一部分的屏蔽。 该装置还包括电极,其被配置为电耦合到屏蔽和接地,其中电极响应于垂直电磁信号,以及由地下地层响应于电地震或地震电转换产生的垂直电磁信号 被动电磁源信号。 该装置还包括放大器,其包括第一输入端和第二输入端,其中第一输入端被配置为电耦合到导电板,而第二输入端被配置为电耦合到电极。