Controlled changes in grain size and pore characteristics and their impact on the hydraulic conductivity and spectral induced polarization response of proxies of alluvial sediments.

Details

Serval ID
serval:BIB_0770A1765543
Type
Inproceedings: an article in a conference proceedings.
Collection
Publications
Institution
Title
Controlled changes in grain size and pore characteristics and their impact on the hydraulic conductivity and spectral induced polarization response of proxies of alluvial sediments.
Author(s)
Koch K., Irving J., Kemna A.
Organization
Socitety of Exploration Geophysicists, Dallas, United States of America
Publication state
Published
Issued date
2009
Language
english
Notes
Koch2009a
Abstract
Understanding the influence of pore space characteristics on the hydraulic
conductivity and spectral induced polarization (SIP) response is
critical for establishing relationships between the electrical and
hydrological properties of surficial sedimentary deposits. Here,
we present the results of laboratory SIP measurements on saturated
quartz samples with granulometric characteristics ranging from fine
sand to fine gravel. We alter the pore characteristics using three
principal methods: (i) variation of the grain sizes, (ii) changing
the degree of compaction, and (iii) changing the level of sorting.
We then examine how these changes affect both the SIP response and
the hydraulic conductivity. In general, the results indicate a clear
connection between the applied changes in pore characteristics and
the SIP response. In particular, we observe a systematic correlation
between the hydraulic conductivity and the relaxation time of the
Cole-Cole model describing the observed SIP effect for the whole
range of considered grain sizes.
Create date
25/11/2013 18:31
Last modification date
21/08/2019 6:15
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