DOI: 10.5194/hess-19-2701-2015
Scopus记录号: 2-s2.0-84935017876
论文题名: Dye tracing to determine flow properties of hydrocarbon-polluted Rabots glaciär, Kebnekaise, Sweden
作者: Clason C ; C ; , Coch C ; , Jarsjö J ; , Brugger K ; , Jansson P ; , Rosqvist G
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 6 起始页码: 2701
结束页码: 2715
语种: 英语
Scopus关键词: Aircraft accidents
; Drainage
; Hydrocarbons
; Hysteresis
; Pollution
; River pollution
; Environmental Monitoring
; Experimental set up
; Hydrological system
; Pollution sources
; Royal Norwegian Air Force
; Temporal and spatial evolutions
; Temporary storage
; Transport of pollutants
; Pollution detection
; accident
; aircraft
; chemical pollutant
; discharge
; drainage network
; dye
; environmental monitoring
; homogeneity
; hydrocarbon
; hysteresis
; meltwater
; pollutant source
; pollutant transport
; proglacial environment
; spatiotemporal analysis
; topology
; turbidity
; Rabots Glacier
; Sweden
英文摘要: Over 11 000 L of kerosene was deposited on the surface of Rabots glaciär on the Kebnekaise Massif, northern Sweden, following the crash of a Royal Norwegian Air Force aircraft in March 2012. An environmental monitoring programme was subsequently commissioned, including a series of dye tracing experiments during the 2013 melt season, conducted to investigate the transport of pollutants through the glacier hydrological system. This experimental set-up provided a basis from which we could gain new insight into the internal hydrological system of Rabots glaciär. Results of dye tracing experiments reveal a degree of homogeneity in the topology of the drainage system throughout July and August, with an increase in efficiency as the season progresses, as reflected by decreasing temporary storage and dispersivity. Early onset of melting likely led to formation of an efficient, discrete drainage system early in the melt season, subject to decreasing sinuosity and braiding as the season progressed. Four distinct meltwater flow regimes are identified to summarize the temporal and spatial evolution of the system. Analysis of turbidity-discharge hysteresis further supports the formation of discrete, efficient drainage, with clockwise diurnal hysteresis suggesting easy mobilization of readily available sediments in channels. Dye injection immediately downstream of the pollution source zone reveals prolonged storage of dye followed by fast, efficient release. Twinned with a low dye recovery, and supported by sporadic detection of hydrocarbons in the proglacial river, we suggest that meltwater, and thus pollutants in solution, may be released periodically through an efficient, and likely pressurized, hydrological system within the upper reaches of the glacier. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78495
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physical Geography, Stockholm University, Stockholm, Sweden; Geology Discipline, University of Minnesota-Morris, Morris, MN, United States
Recommended Citation:
Clason C,C,, Coch C,et al. Dye tracing to determine flow properties of hydrocarbon-polluted Rabots glaciär, Kebnekaise, Sweden[J]. Hydrology and Earth System Sciences,2015-01-01,19(6)