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Time-Varying Storage-Water Age Relationships in a Catchment With a Mediterranean Climate

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dc.contributor.authorRodriguez, Nicolas B.en
dc.contributor.authorMcGuire, Kevin J.en
dc.contributor.authorKlaus, Julianen
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.contributor.departmentVirginia Water Resources Research Centeren
dc.date.accessioned2019-07-15T19:32:10Zen
dc.date.available2019-07-15T19:32:10Zen
dc.date.issued2018-06-01en
dc.date.updated2019-07-15T19:32:08Zen
dc.description.abstractRecent studies on the relationships between catchment storage and water ages using Travel Time Distributions (TTDs), Residence Time Distributions (RTDs), and StorAge Selection (SAS) functions have led to the hypothesis that streamflow preferentially mobilizes younger water when catchment storage is high. This so-called “Inverse Storage Effect” (ISE) needs further evaluation in more catchments with diverse climates and physiographical features. In this work, we assessed the validity of the ISE in WS10 (H. J. Andrews forest, Oregon, USA), a forested headwater catchment in a Mediterranean climate. A conceptual model of the catchment, developed based on experimental observations of water flow paths in WS10, was calibrated to streamflow and δ18O in streamflow. Based on the calibrated model results, we determined RTDs, and streamflow TTDs and SAS functions by assuming that the soil reservoir and the groundwater reservoir act as well-mixed systems. The streamflow SAS functions and travel time dynamics showed that the ISE generally applies in WS10. Yet, during transitions from dry summer periods to wet winter periods and vice versa, the marked seasonal climate caused rapid and strong storage variations in the catchment, which led to deviations from the ISE. The seasonality of streamflow travel times in WS10 is the result of the seasonal contributions of younger water from the hillslopes added to the rather constant groundwater contributions of older water. The streamflow SAS functions were able to capture the relative importance of contrasting flow paths in the soils and in the bedrock highlighted by previous studies in WS10.en
dc.description.versionPublished versionen
dc.format.extentPages 3988-4008en
dc.format.extent21 page(s)en
dc.identifier.doihttps://doi.org/10.1029/2017WR021964en
dc.identifier.eissn1944-7973en
dc.identifier.issn0043-1397en
dc.identifier.issue6en
dc.identifier.orcidMcGuire, Kevin J. [0000-0001-5751-3956]en
dc.identifier.urihttp://hdl.handle.net/10919/91454en
dc.identifier.volume54en
dc.languageEnglishen
dc.publisherAmerican Geophysical Unionen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000440309900013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectPhysical Sciencesen
dc.subjectEnvironmental Sciencesen
dc.subjectLimnologyen
dc.subjectWater Resourcesen
dc.subjectEnvironmental Sciences & Ecologyen
dc.subjectMarine & Freshwater Biologyen
dc.subjectcatchment storageen
dc.subjectStorAge Selection functionsen
dc.subjectMediterranean climateen
dc.subjecttravel timeen
dc.subjectresidence timeen
dc.subjectstable isotopeen
dc.subjectRESOLUTION ISOTOPE DATAen
dc.subjectTRANSIT TIMESen
dc.subjectSTREAM WATERen
dc.subjectSELECTION FUNCTIONSen
dc.subjectRESIDENCE TIMEen
dc.subjectHEADWATER CATCHMENTSen
dc.subjectEXPERIMENTAL-FORESTen
dc.subjectTEMPORAL DYNAMICSen
dc.subjectDISTRIBUTIONSen
dc.subjectHILLSLOPEen
dc.subject0905 Civil Engineeringen
dc.subject0907 Environmental Engineeringen
dc.subject1402 Applied Economicsen
dc.subjectEnvironmental Engineeringen
dc.titleTime-Varying Storage-Water Age Relationships in a Catchment With a Mediterranean Climateen
dc.title.serialWater Resources Researchen
dc.typeArticle - Refereeden
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-group/Virginia Tech/Natural Resources & Environmenten
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Natural Resources & Environment/Water Resources Research Centeren
pubs.organisational-group/Virginia Tech/Natural Resources & Environment/CNRE T&R Facultyen
pubs.organisational-group/Virginia Tech/Natural Resources & Environment/Forest Resources and Environmental Conservation/FREC WRRC facultyen
pubs.organisational-group/Virginia Tech/Natural Resources & Environment/Forest Resources and Environmental Conservationen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciencesen
pubs.organisational-group/Virginia Tech/University Research Institutesen

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