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(Article of periodic en Anglais - 2013)

Document title

Subsurface architecture of the Boulder Creek Critical Zone Observatory from electrical resistivity tomography

Authors(s) and Affiliation(s)

LEOPOLD M. (1) ; VÖLKEL J. (2) ; HUBER J. (2) ; DETHIER D. (3) ;
(1) Univ. of Western Australia, School of Earth and Environment, Crawley, AUSTRALIE
(2) Technische Univ. München, Center of Life and Food Sciences Weihenstephan, Geomorphology and Soil Science, Munich, ALLEMAGNE
(3) Williams College, Geosciences, Massachusetts, ETATS-UNIS

Abstract

The AA. have used electrical resistivity tomography, a well-established geophysical technique causing minimum surficial disturbance, to portray the subsurface electrical resistivity differences at 3 study sites (Green Lakes Valley; Gordon Gulch; Betasso) at the Boulder Creek Critical Zone Observatory (BcCZO). Possible limitations of the technique are discussed. Interpretation of the specific resistivity values using natural outcrops, pits, roadcuts and drilling data as ground truth information allows to image the critical zone architecture of each site. In general, the data are consistent with results from seismic studies, but electrical resistivity tomography documents a shallower critical zone above the weathered bedrock on average. Additionally, the AA. document high lateral variability, which results from the weathering and sedimentation history and seems to be a consistent aspect of critical zone architecture within the BcCZO

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no12 [pp. 1417-1431]

Bibliographic references : 1 p.

Collation : 11 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3420

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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