DOI: 10.5194/hess-22-6147-2018
论文题名: A propensity index for surface runoff on a karst plateau
作者: Reszler C. ; Komma J. ; Stadler H. ; Strobl E. ; Blöschl G.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期: 12 起始页码: 6147
结束页码: 6161
语种: 英语
Scopus关键词: Aquifers
; Debris
; Grain size and shape
; Groundwater pollution
; Hydrogeology
; Infiltration
; Landforms
; Lime
; Limestone
; Residence time distribution
; Runoff
; Size distribution
; Soil moisture
; Spatial distribution
; Grain size distribution
; Infiltration excess
; Low permeable soils
; Rainfall intensity
; Spatial informations
; Spatial patterns
; Terrain Modeling
; Visual assessments
; Soil surveys
; aquifer pollution
; dolomite
; index method
; infiltration
; karst
; mapping method
; pollutant source
; rainwater
; runoff
; sinkhole
; spatial distribution
; Austria
英文摘要: Karst aquifers are an important water resource, but are particularly vulnerable to pollution due to the typically short residence times. As the rainwater runs off on the surface it may collect contamination from faeces and other sources, before infiltrating the surface. It is therefore important to understand the spatial distribution of the frequency of surface runoff in karst areas. This paper proposes a new field-mapping method for the ability of the landscape to produce and convey surface runoff. The mapping method is based on (i) prior spatial information (e.g. geological map, terrain model), (ii) a visual assessment from a distance at the landscape scale (e.g.Traces of surface runoff) and (iii) local data collection in the field (e.g. soil moisture, grain size distribution). The focus on variables that can be assessed from a distance in the landscape makes the method suitable for mapping larger areas than traditional field mapping. The mapping method is developed and tested for the 60 km2 Hochschwab area in Austria. The field mapping is used to specify a surface runoff propensity index which is tested against the spatial distribution of observed sink holes in the area. The mapping indicates that, in the study region, runoff occurs much more frequently in the poorly karstified dolomitic areas than in the limestone areas that are highly karstified. On dolomites, low permeable soils or debris prevail, often resulting in a permanent surface drainage network. On karstified limestone, sometimes overlaid by debris, surface runoff only occurs through infiltration excess at high rainfall intensities. Overall the analyses suggest that the mapping method is suitable for efficiently and reliably identifying spatial patterns of the ability of the landscape to produce and convey surface runoff in karst areas. © 2018 Copernicus GmbH. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163123
Appears in Collections: 气候变化与战略
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作者单位: Reszler, C., JR-AquaConSol GmbH, Steyrergasse 21, Graz, 8010, Austria; Komma, J., Vienna University of Technology, Institute for Hydraulic and Water Resources Engineering, Centre for Water Resource Systems, Karlsplatz 13, Vienna, 1040, Austria; Stadler, H., JR-AquaConSol GmbH, Steyrergasse 21, Graz, 8010, Austria; Strobl, E., Technisches Büro-Ingenieurbüro Mag. Dr. Elmar Strobl, Grubbergweg 4, Kumberg, 8062, Austria; Blöschl, G., Vienna University of Technology, Institute for Hydraulic and Water Resources Engineering, Centre for Water Resource Systems, Karlsplatz 13, Vienna, 1040, Austria
Recommended Citation:
Reszler C.,Komma J.,Stadler H.,et al. A propensity index for surface runoff on a karst plateau[J]. Hydrology and Earth System Sciences,2018-01-01,22(12)