Testing the Fill-and-Spill Model of Subsurface Lateral Flow Using Ground- Penetrating Radar and Dye Tracing
文献类型：期刊论文
| 作者 | Nyquist, Jonathan E.2; Toran, Laura2; Pitman, Lacey2; Guo, Li1; Lin, Henry1,3 |
| 刊名 | VADOSE ZONE JOURNAL
 |
| 出版日期 | 2018-05-17 |
| 卷号 | 17期号:1页码:13 |
| ISSN号 | 1539-1663 |
| DOI | 10.2136/vzj2017.07.0142 |
| 通讯作者 | Nyquist, Jonathan E.(nyq@temple.edu) |
| 英文摘要 | 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. |
| WOS关键词 | SOIL-WATER CONTENT ; PREFERENTIAL FLOW ; HILLSLOPE ; SUSCEPTIBILITY ; HYDROLOGY ; NETWORK |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000439703900001 |
| 出版者 | SOIL SCI SOC AMER |
| 资助机构 | 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 |
| 源URL | [http://ir.ieecas.cn/handle/361006/13213]  |
| 专题 | 地球环境研究所_生态环境研究室 |
| 通讯作者 | Nyquist, Jonathan E. |
| 作者单位 | 1.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA 2.Temple Univ, Dept Earth & Environm Sci, Philadelphia, PA 19122 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. |
入库方式： OAI收割
来源：地球环境研究所
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