Testing the Fill-and-Spill Model of Subsurface Lateral Flow Using Ground- Penetrating Radar and Dye Tracing

doi:10.2136/vzj2017.07.0142

IEECAS OpenIR > 生态环境研究室

	Testing the Fill-and-Spill Model of Subsurface Lateral Flow Using Ground- Penetrating Radar and Dye Tracing
	Nyquist, Jonathan E.1; Toran, Laura 1; Pitman, Lacey 1; Guo, Li 2; Lin, Henry 2,3
通讯作者	Nyquist, Jonathan E.(nyq@temple.edu)
	2018-05-17
发表期刊	VADOSE ZONE JOURNAL
ISSN	1539-1663
卷号	17 期号:1 页码:13
摘要	Preferential flow (PF), which bypasses large portions of the soil or subsurface matrix, is critical in the transport of water and dissolved constituents in the unsaturated zone. To test the "fill-and-spill" model of hillslope hydrology that describes the generation and pattern of downslope lateral PF after storms, we used dye tracer and time-lapse, ground-penetrating radar (GPR) on a forested hillslope in the Susquehanna-Shale Hills Critical Zone Observatory. We injected 50 L of water mixed with Brilliant Blue dye (4 g L-1) into a shallow trench cut perpendicular to the slope and used GPR to monitor the tracer downslope across a 1.0- by 2.0-m grid. The site was then excavated to the soil-saprock interface and photographed to document the dye pathways. We observed vertical dye fingering near the infiltration trench. Downslope lateral PF at the soil-saprock boundary was limited to similar to 0.40 m, which is evidence that the soil-saprock interface did not fill-and-spill. The extent, depth, and direction of the downslope PF indicated by GPR generally matched the dye staining patterns in the excavation, but the resolution of the 800-MHz GPR antenna was insufficient to distinguish small fingers of dye. A revised filland-spill model was proposed for this site that incorporates the PF through fractured saprock before water encounters fresh bedrock surface. This study demonstrates that GPR integrated with dye tracer infiltration can provide a useful means of testing hillslope hydrological hypotheses and unraveling the complexity of PF at the hillslope scale in a field setting.
DOI	10.2136/vzj2017.07.0142
关键词[WOS]	SOIL-WATER CONTENT ; PREFERENTIAL FLOW ; HILLSLOPE ; SUSCEPTIBILITY ; HYDROLOGY ; NETWORK
收录类别	SCI ; SCI
语种	英语
资助项目	National Science Foundation Critical Zone Observatory program ; Pennsylvania State University[EAR 07-25019] ; Pennsylvania State University[EAR 12-39285] ; Pennsylvania State University[EAR 13-31726] ; Penn State's Forestland Management Office in the College of Agricultural Sciences ; US National Science Foundation Hydrologic Sciences Program[EAR-1416881]
WOS研究方向	Environmental Sciences & Ecology ; Agriculture ; Water Resources
项目资助者	National Science Foundation Critical Zone Observatory program ; Pennsylvania State University ; Penn State's Forestland Management Office in the College of Agricultural Sciences ; US National Science Foundation Hydrologic Sciences Program
WOS类目	Environmental Sciences ; Soil Science ; Water Resources
WOS记录号	WOS:000439703900001
出版者	SOIL SCI SOC AMER
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13214
专题	生态环境研究室
通讯作者	Nyquist, Jonathan E.
作者单位	1.Temple Univ, Dept Earth & Environm Sci, Philadelphia, PA 19122 USA 2.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA 3.Chinese Acad Sci, Inst Earth Environm, Dept Ecoenvironm, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Nyquist, Jonathan E.,Toran, Laura,Pitman, Lacey,et al. Testing the Fill-and-Spill Model of Subsurface Lateral Flow Using Ground- Penetrating Radar and Dye Tracing[J]. VADOSE ZONE JOURNAL,2018,17(1):13.
APA	Nyquist, Jonathan E.,Toran, Laura,Pitman, Lacey,Guo, Li,&Lin, Henry.(2018).Testing the Fill-and-Spill Model of Subsurface Lateral Flow Using Ground- Penetrating Radar and Dye Tracing.VADOSE ZONE JOURNAL,17(1),13.
MLA	Nyquist, Jonathan E.,et al."Testing the Fill-and-Spill Model of Subsurface Lateral Flow Using Ground- Penetrating Radar and Dye Tracing".VADOSE ZONE JOURNAL 17.1(2018):13.