Transient electric field response to a uniform, magnetically viscous earth excited by a grounded line source

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Авторы: Antonov E.Y.   (ИНГГ СО РАН)   Kozhevnikov N.O.   (ИНГГ СО РАН)  
дата публикации: 2017
A new method is suggested for calculation of transient electric field response to conducting magnetically viscous earth excited by a grounded line source. Calculation algorithms are implemented in the computer program FwLL_MV. Using a uniform, conducting magnetically viscous half-space as an earth model, we have shown that magnetic relaxation affects the TEM response of equatorial and in-line arrays. As in the case of loop arrays, apparent resistivity steadily decreases with time. The higher the half-space resistivity and the shorter the offset, the earlier the voltage and the apparent resistivity begin to decrease as 1/t. Magnetic relaxation and decay of eddy currents are independent processes within the range of resistivities typical of rocks.
первоисточник: Russian Geology and Geophysics
том: 7
страницы: 855-863
внешние ссылки:
WoS   WoS (цитирование)






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