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Titolo:
HYDROGRAPH SEPARATIONS IN AN ARCTIC WATERSHED USING MIXING MODEL AND GRAPHICAL TECHNIQUES
Autore:
MCNAMARA JP; KANE DL; HINZMAN LD;
Indirizzi:
UNIV ALASKA FAIRBANKS,WATER & ENVIRONM RES CTR FAIRBANKS AK 99775
Titolo Testata:
Water resources research
fascicolo: 7, volume: 33, anno: 1997,
pagine: 1707 - 1719
SICI:
0043-1397(1997)33:7<1707:HSIAAW>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
STORM RUNOFF; STREAMFLOW GENERATION; PRECAMBRIAN SHIELD; FORESTED CATCHMENT; SNOWMELT RUNOFF; ACTIVE LAYER; BASIN; GROUNDWATER; HYDROLOGY; FLOW;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
J.P. Mcnamara et al., "HYDROGRAPH SEPARATIONS IN AN ARCTIC WATERSHED USING MIXING MODEL AND GRAPHICAL TECHNIQUES", Water resources research, 33(7), 1997, pp. 1707-1719

Abstract

Storm hydrographs in the Upper Kuparuk River basin (142 km(2)) in northern Alaska were separated into source components using a mixing model and by recession analysis. In non-Arctic regions, storm flow is commonly dominated by old water, that is, water that existed in the basin before the storm. We suspected that this may not be true in Arctic regions where permafrost diminishes subsurface storage capacity. Streamflow during the snowmelt period was nearly all new water. However, all summer storms were dominated by old water. Storms in a neighboring basin were dominated by new water but much less than was the snowmelt event. Thus a large increase in old water contributions occurred followingthe snowmelt period. This increase continued moderately through the summer in 1994 but not in 1995. We credit the seasonal changes in old water contributions to increased subsurface storage capacity due to thawing of the active layer.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 20:43:45