期刊
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
卷 53, 期 4, 页码 725-740出版社
TAYLOR & FRANCIS LTD
DOI: 10.1623/hysj.53.4.725
关键词
snowmelt; runoff; HRU; inductive modelling; deductive modelling; aggregation; Yukon Territory
资金
- CFCAS
- NSERC
- CRC
- CH
Appropriate representation of landscape heterogeneity at small to medium scales is a central issue for hydrological modelling. Two main hydrological modelling approaches, deductive and inductive, are generally applied. Here, snow-cover ablation and basin snowmelt runoff are evaluated using a combined modelling approach that includes the incorporation of detailed process understanding along with information gained from observations of basin-wide streamflow phenomena. The Study site is Granger Basin, a small sub-arctic basin in the mountains of the Yukon Territory, Canada. The analysis is based oil the comparison between basin-aggregated and distributed landscape representations. Results show that the distributed model based on hydrological response landscape units best describes the observed magnitudes of both snow-cover ablation and basin runoff, whereas the aggregated approach flails to represent the differential snowmelt rates and to describe both runoff volumes and dynamics when discontinuous snowmelt events occur.
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