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Estimating 3D variation in active-layer thickness beneath arctic streams using ground-penetrating radar

Journal of Hydrology

By:
, , , , , , and
DOI: 10.1016/j.jhydrol.2009.05.011

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Abstract

We acquired three-dimensional (3D) ground-penetrating radar (GPR) data across three stream sites on the North Slope, AK, in August 2005, to investigate the dependence of thaw depth on channel morphology. Data were migrated with mean velocities derived from multi-offset GPR profiles collected across a stream section within each of the 3D survey areas. GPR data interpretations from the alluvial-lined stream site illustrate greater thaw depths beneath riffle and gravel bar features relative to neighboring pool features. The peat-lined stream sites indicate the opposite; greater thaw depths beneath pools and shallower thaw beneath the connecting runs. Results provide detailed 3D geometry of active-layer thaw depths that can support hydrological studies seeking to quantify transport and biogeochemical processes that occur within the hyporheic zone.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Estimating 3D variation in active-layer thickness beneath arctic streams using ground-penetrating radar
Series title:
Journal of Hydrology
DOI:
10.1016/j.jhydrol.2009.05.011
Volume
373
Issue:
3-4
Year Published:
2009
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Hydrology
First page:
479
Last page:
486
Number of Pages:
8