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@ARTICLE{Inzoli:820820,
author = {Inzoli, S. and Giudici, M. and Huisman, Johan Alexander},
title = {{E}stimation of sediment texture from spectral induced
polarisation data using cluster and principal component
analysis},
journal = {Near surface geophysics},
volume = {14},
number = {5},
issn = {1569-4445},
address = {Houten},
publisher = {EAGE},
reportid = {FZJ-2016-06087},
pages = {433-447},
year = {2016},
abstract = {Spectral induced polarisation data are usually interpreted
with simple models in order to derive petrophysical
relationships between electrical and sedimentological
properties, such as texture, clay content, and permeability.
The aim of this work is to explore the value of spectral
induced polarisation in addition to conventional
direct-current resistivity measurements for determining
textural properties of saturated samples collected from
alluvial deposits. For this, an advanced data processing
approach that combines cluster and principal component
analysis was developed and applied to integral parameters
derived from Debye decomposition of spectral induced
polarisation data. This data processing procedure allowed
identifying groups of samples with a similar spectral
induced polarisation response and to derive a characteristic
grain-size distribution for each group of samples.The method
to estimate the grain-size distribution from spectral
induced polarisation data was successfully validated using
independent sediment samples. The remaining uncertainty in
the estimation of sediment texture from spectral induced
polarisation data was attributed to the effect of pore size
distribution and mineralogy, which were not considered in
the present work but can be added in the future within the
same conceptual workflow.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000386318500006},
doi = {10.3997/1873-0604.2016033},
url = {https://juser.fz-juelich.de/record/820820},
}