globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-1393-2020
论文题名:
Intra-catchment variability of surface saturation - Insights from physically based simulations in comparison with biweekly thermal infrared image observations
作者: Glaser B.; Antonelli M.; Hopp L.; Klaus J.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:3
起始页码: 1393
结束页码: 1413
语种: 英语
Scopus关键词: Groundwater ; Infrared imaging ; Infrared radiation ; Runoff ; Springs (water) ; Wetlands ; Headwater catchment ; Morphological features ; Physically based modeling ; Physically-based simulation ; Power law relationship ; Spatiotemporal variability ; Subsurface structures ; Thermal infrared images ; Catchments ; catchment ; comparative study ; discharge ; headwater ; infrared imagery ; mapping method ; observatory ; riparian vegetation ; saturation ; simulation ; spatiotemporal analysis ; topography ; Diekirch ; Luxembourg ; Luxembourg [Benelux] ; Weierbach
英文摘要: In this study, we explored the spatio-temporal variability of surface saturation within a forested headwater catchment using a combined simulation-observation approach. We simulated the occurrence of surface saturation in the Weierbach catchment (Luxembourg) with the physically based model HydroGeoSphere. We confronted the simulation with thermal infrared images that we acquired during a 2-year mapping campaign for seven distinct riparian areas with weekly to biweekly recurrence frequency. Observations and simulations showed similar saturation dynamics across the catchment. The observed and simulated relation of surface saturation to catchment discharge resembled a power law relationship for all investigated riparian areas but varied to a similar extent, as previously observed between catchments of different morphological and topographical characteristics. The observed spatial patterns and frequencies of surface saturation varied between and within the investigated areas and the model reproduced these spatial variations well. The good performance of the simulation suggested that surface saturation in the Weierbach catchment is largely controlled by exfiltration of groundwater into local topographic depressions. However, the simulated surface saturation contracted faster than observed, the simulated saturation dynamics were less variable between the investigated areas than observed, and the match of simulated and observed saturation patterns was not equally good in all investigated riparian areas. These mismatches between observations and simulation highlight that the intra-catchment variability of surface saturation must also result from factors that were not considered in the model set-up, such as differing subsurface structures or a differing persistence of surface saturation due to local morphological features like perennial springs. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162754
Appears in Collections:气候变化与战略

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作者单位: Glaser, B., Catchment and Eco-Hydrology Research Group, Luxembourg Institute of Science and Technology, Esch, Alzette4362, Luxembourg, Department of Hydrology, University of Bayreuth, Bayreuth, 95447, Germany, Department of Geography, Ludwig-Maximilians-Universität München, Munich, 80333, Germany; Antonelli, M., Catchment and Eco-Hydrology Research Group, Luxembourg Institute of Science and Technology, Esch, Alzette4362, Luxembourg, Hydrology and Quantitative Water Management Group, Wageningen University and Research, Wageningen, 6700, Netherlands; Hopp, L., Department of Hydrology, University of Bayreuth, Bayreuth, 95447, Germany; Klaus, J., Catchment and Eco-Hydrology Research Group, Luxembourg Institute of Science and Technology, Esch, Alzette4362, Luxembourg

Recommended Citation:
Glaser B.,Antonelli M.,Hopp L.,et al. Intra-catchment variability of surface saturation - Insights from physically based simulations in comparison with biweekly thermal infrared image observations[J]. Hydrology and Earth System Sciences,2020-01-01,24(3)
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