Efficiency of a Marine Towed Electrical Resistivity Method

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Title:	Efficiency of a Marine Towed Electrical Resistivity Method
Authors:	Chiang,CW;Goto,TN;Chen,CC;Hsu,SK
Contributors:	地球物理研究所
Date:	2011
Issue Date:	2012-03-27 17:37:01 (UTC+8)
Publisher:	國立中央大學
Abstract:	In contrast to marine sediments, because of large electrical resistivity anomalies found in sulfide deposits and methane hydrates, resistivity measurements such as marine towed electrical resistivity (MTER) might be a feasible method for discovering those natural minerals. To determine the feasibility of the MTER method we examined arrays consisting of a pole electrical dipole (PED), vertical electrical dipole (VED) and horizontal electrical dipole (HED). The VED array showed a maximum difference in electric fields of 36% and 105% in the resistive and conductive models, respectively, while the PED and HED arrays yielded worse results of around 13% to 19%, respectively. The VED array showed a higher difference in electric fields than both the HED and PED arrays in the two models. Therefore, we suggest that a VED array with a large electrical current would be most conducive leading to the discovery of such minerals during MTER surveys.
Relation:	TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
Appears in Collections:	[Graduate Institute of Geophysics] journal & Dissertation

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