DOI: 10.5194/hess-19-1125-2015
Scopus记录号: 2-s2.0-84923881923
论文题名: Quantitative high-resolution observations of soil water dynamics in a complicated architecture using time-lapse ground-penetrating radar
作者: Klenk P ; , Jaumann S ; , Roth K
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 3 起始页码: 1125
结束页码: 1139
语种: 英语
Scopus关键词: Dynamics
; Geological surveys
; Groundwater
; Radar
; Soil moisture
; Soils
; Surface waters
; Bottom reflection
; Capillary fringe
; Ground Penetrating Radar
; Ground penetrating radar (GPR)
; High resolution
; High resolution observations
; Soil water dynamics
; Wealth of information
; Ground penetrating radar systems
; capillarity
; experimental study
; ground penetrating radar
; numerical model
; observational method
; resolution
; soil water
; water content
; water table
英文摘要: High-resolution time-lapse ground-penetrating radar (GPR) observations of advancing and retreating water tables can yield a wealth of information about near-surface water content dynamics. In this study, we present and analyze a series of imbibition, drainage and infiltration experiments that have been carried out at our artificial ASSESS test site and observed with surface-based GPR. The test site features a complicated but known subsurface architecture constructed with three different kinds of sand. It allows the study of soil water dynamics with GPR under a wide range of different conditions. Here, we assess in particular (i) the feasibility of monitoring the dynamic shape of the capillary fringe reflection and (ii) the relative precision of monitoring soil water dynamics averaged over the whole vertical extent by evaluating the bottom reflection. The phenomenology of the GPR response of a dynamically changing capillary fringe is developed from a soil physical point of view. We then explain experimentally observed phenomena based on numerical simulations of both the water content dynamics and the expected GPR response. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78587
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Environmental Physics, Heidelberg University, Im Neuenheimer Feld 229, Heidelberg, Germany
Recommended Citation:
Klenk P,, Jaumann S,, Roth K. Quantitative high-resolution observations of soil water dynamics in a complicated architecture using time-lapse ground-penetrating radar[J]. Hydrology and Earth System Sciences,2015-01-01,19(3)