Stratigraphic Analyses Using GPR

Groundwater surface trends from ground penetrating radar (GPR) profiles taken across Late Holocene barriers and beach plains of the Columbia River littoral system, Pacific Northwest Coast, USA
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Published:January 01, 2007
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CiteCitation
Curt D. Peterson, Harry M. Jol, David Percy, Eric L. Nielsen, 2007. "Groundwater surface trends from ground penetrating radar (GPR) profiles taken across Late Holocene barriers and beach plains of the Columbia River littoral system, Pacific Northwest Coast, USA", Stratigraphic Analyses Using GPR, Gregory S. Baker, Harry M. Jol
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Ground penetrating radar (GPR) records of groundwater surface (GWS) reflections have been analyzed from 40 across-barrier profiles, totaling 50 km in combined length, taken from barrier spits and beach plains of the Columbia River littoral system. The barriers and beach plains host shallow fresh-water aquifers in the prograded beach deposits and abandoned foredune ridges, totaling 10–30 m in thickness. Study results demonstrate that GWS reflections could be traced continuously at subsurface depths of 1–15 m with the GPR 100 MHz and 50 MHz antennae using 400 V and 1000 V transmitters. Boreholes (62 in number) and lake water levels (24...
- aquifers
- barrier beaches
- beach ridges
- beaches
- boreholes
- Cenozoic
- coastal aquifers
- coastal dunes
- coastal environment
- Columbia River
- dunes
- ecosystems
- elevation
- eolian features
- geomorphology
- geophysical methods
- geophysical profiles
- geophysical surveys
- Grays Harbor
- ground water
- ground-penetrating radar
- Holocene
- hydrology
- Oregon
- Pacific County Washington
- ponds
- Quaternary
- radar methods
- shore features
- shorelines
- stratigraphic units
- surveys
- thickness
- topography
- United States
- upper Holocene
- Washington
- wetlands
- Willapa Bay
- Long Beach Peninsula