کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4578723 1630078 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimating 3D variation in active-layer thickness beneath arctic streams using ground-penetrating radar
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Estimating 3D variation in active-layer thickness beneath arctic streams using ground-penetrating radar
چکیده انگلیسی

SummaryWe 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 373, Issues 3–4, 15 July 2009, Pages 479–486
نویسندگان
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