DOI: 10.1002/grl.50895
论文题名: Are we missing the tail (and the tale) of residence time distributions in watersheds?
作者: Frisbee M.D. ; Wilson J.L. ; Gomez-Velez J.D. ; Phillips F.M. ; Campbell A.R.
刊名: Geophysical Research Letters
ISSN: 0094-8595
EISSN: 1944-8326
出版年: 2013
卷: 40, 期: 17 起始页码: 4633
结束页码: 4637
语种: 英语
英文关键词: environmental tracers
; geochemistry
; residence times
; springs
; watershed hydrology
; weathering rates
Scopus关键词: Ecological process
; Environmental tracers
; Mean residence time
; Physical meanings
; Residence time
; Solute concentrations
; Watershed hydrology
; Weathering rates
; Geochemistry
; Residence time distribution
; Springs (components)
; Surface waters
; Weathering
; Watersheds
; geochemistry
; hydrology
; kinetics
; residence time
; surface water
; watershed
; weathering
英文摘要: Residence times provide vital information on hydrological, geochemical, and ecological processes in watersheds. The common perception is that mean residence times in watersheds are very short, on the order of days to years. However, there is growing concern that longer residence times of centuries to millennia are not being captured by traditional surface water age-dating methods. We hypothesize that if mean residence times are biased short, then weathering rates calculated from mean residence times will be forced unrealistically high to match observed solute concentrations. We test this hypothesis by calculating weathering rates from springs based upon residence times estimated using three different age-dating methods. Observed solute concentrations require unrealistically large weathering rates if typical short residence times are employed as compared to rates derived from longer residence times. Residence time distributions in watersheds have substantially longer tails than previously thought, with implications for age-dating methods and their interpretation to infer process behavior. Key Points Watershed residence times are substantially longer than commonly thought Very short residence times were not supported by geochemical kinetics Geochemical kinetics provide unique test of physical meaning of residence times ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883647006&doi=10.1002%2fgrl.50895&partnerID=40&md5=33e7edeea4aab4846e42cd0cb27d0eb0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5859
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Environmental Science, New Mexico Tech, 801 Leroy Place, Socorro, NM 87801, United States
Recommended Citation:
Frisbee M.D.,Wilson J.L.,Gomez-Velez J.D.,et al. Are we missing the tail (and the tale) of residence time distributions in watersheds?[J]. Geophysical Research Letters,2013-01-01,40(17).