Lake Baikal-A Unique Site for testing and calibration of near-surface TEM systems [Электронный ресурс]
(ИНГГ СО РАН)
дата публикации: 2018
The paper discusses using Lake Baikal as a site for testing a near-surface TEM system. The water column of Lake Baikal forms a natural geoelectric model with precisely known parameters. Because of this, it has been possible to identify and assess the differences between the transient voltage responses measured with different arrays, and the corresponding modeled ones. It follows, from the field experiments conducted that the smaller the transmitter loop employed (central loop mode) the greater the difference between measured and modeled TEM responses. Since the geoelectrical model is known, this difference gives an objective assessment of the effect that the TEM system has on the overall measured response. It is notable that measured and calculated responses coincide when TEM soundings are done using separate loops (loop-loop mode).
первоисточник: Near Surface Geoscience 2017 - 23rd European Meeting of Environmental and Engineering Geophysics (Malmo, Sweden, 3-7 September 2017): Proceedings
страницы: Tu 23P1 14