Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4984
AuthorsPatella, D. 
TitleModeling electrical dispersion phenomena in Earth materials
Issue DateFeb-2008
Series/Report no.1/51 (2008)
URIhttp://hdl.handle.net/2122/4984
Keywordsinduced polarization
electrical dispersion spectra
geophysical applications
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous 
AbstractIt is illustrated that IP phenomena in rocks can be described using conductivity dispersion models deduced as solutions to a 2nd-order linear differential equation describing the motion of a charged particle immersed in an external electrical field. Five dispersion laws are discussed, namely: the non-resonant positive IP model, which leads to the classical Debye-type dispersion law and by extension to the Cole-Cole model, largely used in current practice; the non-resonant negative IP model, which allows negative chargeability values, known in metals at high frequencies, to be explained as an intrinsic physical property of earth materials in specific field cases; the resonant flat, positive or negative IP models, which can explain the presence of peak effects at specific frequencies superimposed on flat, positive or negative dispersion spectra.
Appears in Collections:Annals of Geophysics

Files in This Item:
File Description SizeFormat 
11 Patella.pdf409.47 kBAdobe PDFView/Open
Show full item record

Page view(s)

102
Last Week
0
Last month
3
checked on Aug 21, 2017

Download(s)

230
checked on Aug 21, 2017

Google ScholarTM

Check