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DOI	10.1002/hyp.14082
	An improved practical approach for estimating catchment-scale response functions through wavelet analysis
	Dwivedi, Ravindra; Eastoe, Christopher; Knowles, John F.; Hamann, Lejon; Meixner, Thomas; Ty Ferre, Paul A.; Castro, Christopher; Wright, William E.; Niu, Guo-Yue; Minor, Rebecca; Barron-Gafford, Greg A.; Abramson, Nathan; Mitra, Bhaskar; Papuga, Shirley A.; Stanley, Michael; Chorover, Jon
通讯作者	Dwivedi, R (corresponding author), Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA.
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2021
卷号	35 期号:3
英文摘要	Catchment-scale response functions, such as transit time distribution (TTD) and evapotranspiration time distribution (ETTD), are considered fundamental descriptors of a catchment's hydrologic and ecohydrologic responses to spatially and temporally varying precipitation inputs. Yet, estimating these functions is challenging, especially in headwater catchments where data collection is complicated by rugged terrain, or in semi-arid or sub-humid areas where precipitation is infrequent. Hence, we developed practical approaches for estimating both TTD and ETTD from commonly available tracer flux data in hydrologic inflows and outflows without requiring continuous observations. Using the weighted wavelet spectral analysis method of Kirchner and Neal [2013] for delta O-18 in precipitation and stream water, we calculated TTDs that contribute to streamflow via spatially and temporally variable flow paths in a sub-humid mountain headwater catchment in Arizona, United States. Our results indicate that composite TTDs (a combination of Piston Flow and Gamma TTDs) most accurately represented this system for periods up to approximately 1 month, and that a Gamma TTD was most appropriate thereafter during both winter and summer seasons and for the overall time-weighted TTD; a Gamma TTD type was applicable for all periods during the dry season. The TTD results also suggested that old waters, i.e., beyond the applicable tracer range, represented approximately 3% of subsurface contributions to streamflow. For ETTD and using delta O-18 as a tracer in precipitation and xylem waters, a Gamma ETTD type best matched the observations for all seasons and for the overall time-weighted pattern, and stable water isotopes were effective tracers for the majority of vegetation source waters. This study addresses a fundamental question in mountain catchment hydrology; namely, how do the spatially and temporally varying subsurface flow paths that support catchment evapotranspiration and streamflow modulate water quantity and quality over space and time.
英文关键词	ET time distribution headwater mountain soil water spectral analysis stable water isotopes subsurface storage transit time distribution
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000636346700027
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	University of Arizona ; United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368964
作者单位	[Dwivedi, Ravindra; Meixner, Thomas; Ty Ferre, Paul A.; Castro, Christopher; Niu, Guo-Yue; Abramson, Nathan] Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA; [Eastoe, Christopher] Univ Arizona, Dept Geosci, Tucson, AZ USA; [Knowles, John F.] USDA ARS, Southwest Watershed Res Ctr, Tucson, AZ USA; [Knowles, John F.; Minor, Rebecca; Barron-Gafford, Greg A.] Univ Arizona, Sch Geog Dev & Environm, Tucson, AZ USA; [Hamann, Lejon] US Geol Survey, Arizona Water Sci Ctr, Tucson, AZ USA; [Wright, William E.] Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA; [Minor, Rebecca; Barron-Gafford, Greg A.] Univ Arizona, Biosphere 2, Tucson, AZ USA; [Mitra, Bhaskar] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; [Mitra, Bhaskar] Texas A&M Univ, Sch Ecosyst Sci & Management, College Stn, TX USA; [Papuga, Shirley A.] Wayne State Univ, Dept Geol, Detroit, MI USA; [Papuga, Shirley A.] Wayne State Univ, Environm Sci Program, Detroit, MI USA; [Stanley, Michael] Mt Lemmon Water Dist, Tucson, AZ USA; [Ch...
推荐引用方式 GB/T 7714	Dwivedi, Ravindra,Eastoe, Christopher,Knowles, John F.,et al. An improved practical approach for estimating catchment-scale response functions through wavelet analysis[J]. University of Arizona, United States Geological Survey,2021,35(3).
APA	Dwivedi, Ravindra.,Eastoe, Christopher.,Knowles, John F..,Hamann, Lejon.,Meixner, Thomas.,...&Chorover, Jon.(2021).An improved practical approach for estimating catchment-scale response functions through wavelet analysis.HYDROLOGICAL PROCESSES,35(3).
MLA	Dwivedi, Ravindra,et al."An improved practical approach for estimating catchment-scale response functions through wavelet analysis".HYDROLOGICAL PROCESSES 35.3(2021).