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Titolo:
Runoff generation in a hypermaritime bog-forest upland
Autore:
Gibson, JJ; Price, JS; Aravena, R; Fitzgerald, DF; Maloney, D;
Indirizzi:
Univ Waterloo, Dept Geog, Waterloo, ON N2L 3G1, Canada Univ Waterloo Waterloo ON Canada N2L 3G1 og, Waterloo, ON N2L 3G1, Canada Univ Waterloo, Wetlands Res Ctr, Waterloo, ON N2L 3G1, Canada Univ Waterloo Waterloo ON Canada N2L 3G1 tr, Waterloo, ON N2L 3G1, Canada Univ Waterloo, Dept Earth Sci, Waterloo, ON N2L 3G1, Canada Univ WaterlooWaterloo ON Canada N2L 3G1 ci, Waterloo, ON N2L 3G1, Canada British Columbia Minist Forests, Smithers, BC, Canada British Columbia Minist Forests Smithers BC Canada Smithers, BC, Canada
Titolo Testata:
HYDROLOGICAL PROCESSES
fascicolo: 15, volume: 14, anno: 2000,
pagine: 2711 - 2730
SICI:
0885-6087(20001030)14:15<2711:RGIAHB>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISSOLVED ORGANIC-CARBON; PRECAMBRIAN SHIELD; CATCHMENTS; EXPORT; WATER;
Keywords:
stable isotopes; runoff; wetland; bog; hydrograph separation; deuterium; oxygen-18;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Gibson, JJ Univ Waterloo, Dept Geog, Waterloo, ON N2L 3G1, Canada Univ Waterloo Waterloo ON Canada N2L 3G1 o, ON N2L 3G1, Canada
Citazione:
J.J. Gibson et al., "Runoff generation in a hypermaritime bog-forest upland", HYDROL PROC, 14(15), 2000, pp. 2711-2730

Abstract

Shallow hillslope groundwater is shown to be a dominant source of streamflow in sloping bog-forest uplands of the North Coast Forest District, British Columbia, based on a three-component isotope hydrograph-separation analysis conducted in July 1998. At peak discharge during a mid-summer rainfall event, new water contributions accounted for only 12% of streamflow, whereasshallow groundwater accounted For 85% of streamflow and bog groundwater and deep hillslope groundwater accounted for the remaining 3% of streamflow. Mean residence time of water is estimated to be about 2 months, and soil storage capacity is roughly 400 mm based on the analysis of the baseflow discharge and isotopic response. Systematic seasonal shifts in deuterium excessof rainfall in the Prince Rupert area are shown to be useful for labellingshallow and deep groundwaters based on their residence time signatures. The potential for using dissolved organic carbon and deuterium excess as hydrological tracers is also discussed. Copyright (C) 2000 John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 19:57:10