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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Controlled source electro-magnetic ： ウィキペディア英語版 Controlled source electro-magnetic The Controlled Source Electromagnetic (CSEM) method is an offshore geophysical technique,〔(Controlled Source Electromagnetic (CSEM) technique for detection and delineation of hydrocarbon reservoirs: )〕〔(SIO Marine EM Laboratory )〕 employing electromagnetic remote-sensing technology to indicate the presence and extent of hydrocarbon below the seabed. But often noise perturbs the delineation and quantification.〔Bhatt, K. M. (2014), Microseisms and its impact on the marine‐controlled source electromagnetic signal, J. Geophys. Res. Solid Earth, 119, doi:10.1002/2014JB011024.〕 The CSEM survey uses a dipole source that is towed just above the seafloor to transmit a time-varying electromagnetic field into the earth. This field is modified by the presence of subsurface resistive layers and these changes are detected and logged by an array of receivers placed on the seabed. Because hydrocarbon-bearing formations are highly resistive compared with surrounding formations, a CSEM survey can indicate the presence of oil and gas in offshore situations.〔( 2006 - mCSEM Marine Controlled Source Electromagnetic )〕 ==See also== *Exploration geophysics *Electromagnetic Geoservices ASA *WesternGeco * List of oilfield service companies 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Controlled source electro-magnetic」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.