کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8915279 | 1641093 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sensitivity of galvanic and inductive Induced Polarization methods to the Cole-Cole parameters
ترجمه فارسی عنوان
حساسیت روشهای پلاریزه منجر به القایی و القایی به پارامترهای کول کول
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کلمات کلیدی
وضوح، مدل کول کول، پلاریزه منجر به طیفی، پلاریزه منجر به گذشت، صدای الکترومغناطیسی گذرا،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
The Induced Polarization (IP) method is recognized as a valuable geophysical tool for resource exploration and environmental studies. In many of these studies, the Cole-Cole relaxation expression has been used to describe how subsurface resistivity depends on the frequency of the fields. In this study, we estimate the resolution of the Cole-Cole parameters of simple models measured by three geophysical methods. We compare the Spectral IP (SIP), the time-domain or Transient IP (TIP), and the in-loop Transient Electromagnetic (TEM) methods. In the first two, a current is injected directly into the ground (galvanic), while in the last one, the current is created by electromagnetic induction. The sensitivities and parameter uncertainties are estimated with a Singular Value Decomposition of the sensitivity matrix for a series of homogeneous and two-layered models. In general, the SIP method gives the best parameter resolutions, followed by those of the TIP and TEM methods. Of the four Cole-Cole parameters, generally the time constant is the least well resolved. The parameters are better resolved when the time constant is less than 10â¯s. When the polarizable medium is buried under a non-polarizable layer, the uncertainties of the TEM method show an important increase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Applied Geophysics - Volume 158, November 2018, Pages 1-10
Journal: Journal of Applied Geophysics - Volume 158, November 2018, Pages 1-10
نویسندگان
Salvador GarcÃa-Fiscal, Carlos Flores,