气候变化领域集成服务门户(CCPortal): Intra-catchment variability of surface saturation - Insights from physically based simulations in comparison with biweekly thermal infrared image observations

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DOI	10.5194/hess-24-1393-2020
	Intra-catchment variability of surface saturation - Insights from physically based simulations in comparison with biweekly thermal infrared image observations
	Glaser B.; Antonelli M.; Hopp L.; Klaus J.
发表日期	2020
ISSN	1027-5606
起始页码	1393
结束页码	1413
卷号	24 期号:3
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.
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159464
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
推荐引用方式 GB/T 7714	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],2020,24(3).
APA	Glaser B.,Antonelli M.,Hopp L.,&Klaus J..(2020).Intra-catchment variability of surface saturation - Insights from physically based simulations in comparison with biweekly thermal infrared image observations.Hydrology and Earth System Sciences,24(3).
MLA	Glaser B.,et al."Intra-catchment variability of surface saturation - Insights from physically based simulations in comparison with biweekly thermal infrared image observations".Hydrology and Earth System Sciences 24.3(2020).