Show simple item record

dc.contributor.authorDutton, Andreaen_US
dc.contributor.authorWilkinson, Bruce H.en_US
dc.contributor.authorWelker, Jeffrey M.en_US
dc.contributor.authorBowen, Gabriel J.en_US
dc.contributor.authorLohmann, Kyger C.en_US
dc.date.accessioned2007-01-17T15:53:18Z
dc.date.available2007-01-17T15:53:18Z
dc.date.issued2005-12-30en_US
dc.identifier.citationDutton, Andrea; Wilkinson, Bruce H.; Welker, Jeffrey M.; Bowen, Gabriel J.; Lohmann, Kyger C. (2005)."Spatial distribution and seasonal variation in 18 O/ 16 O of modern precipitation and river water across the conterminous USA." Hydrological Processes 19(20): 4121-4146. <http://hdl.handle.net/2027.42/49284>en_US
dc.identifier.issn0885-6087en_US
dc.identifier.issn1099-1085en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/49284
dc.description.abstractWe report a quantitative analysis of regional differences in the the oxygen isotope composition of river water and precipitation across the USA because data are now available to undertake a more geographically and temporally extensive analysis than was formerly possible. Maps of modern, mean annual Δ 18 O values for both precipitation (Δ 18 O PPT ) and river water (Δ 18 O RIV ) across the 48 contiguous states of the USA have been generated using latitude and elevation as the primary predictors of stable isotope composition while also incorporating regional and local deviations based on available isotopic data. The difference between these two maps was calculated to determine regions where Δ 18 O RIV is significantly offset from local Δ 18 O PPT . Additional maps depicting seasonal and extreme values for Δ 18 O RIV and Δ 18 O PPT were also constructed. This exercise confirms the presence of regions characterized by differences in Δ 18 O RIV and Δ 18 O PPT and specifically identifies the magnitude and regional extent of these offsets. In particular, the Great Plains has Δ 18 O RIV values that are more positive than precipitation, while much of the western USA is characterized by significantly lower Δ 18 O RIV values in comparison with local Δ 18 O PPT . The most salient feature that emerged from this comparison is the ‘catchment effect’ for the rivers. Because river water is largely derived from precipitation that fell upstream of the sample locality (i.e. at higher elevations) Δ 18 O RIV values are often lower than local Δ 18 O PPT values, particularly in catchments with high-elevation gradients. Seasonal patterns in the isotopic data substantiate the generally accepted notion that amplitudes of Δ 18 O variation are greatly dampened in river water relative to those of local precipitation. Copyright © 2005 John Wiley & Sons, Ltd.en_US
dc.format.extent784303 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherJohn Wiley & Sons, Ltd.en_US
dc.subject.otherEarth and Environmental Scienceen_US
dc.subject.otherEarth Scienceen_US
dc.titleSpatial distribution and seasonal variation in 18 O/ 16 O of modern precipitation and river water across the conterminous USAen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelCivil and Environmental Engineeringen_US
dc.subject.hlbsecondlevelGeography and Mapsen_US
dc.subject.hlbsecondlevelGeology and Earth Sciencesen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.subject.hlbtoplevelSocial Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, USA ; Research School of Earth Sciences, The Australian National University, 1 Mills Road, Canberra, ACT 0200, Australia.en_US
dc.contributor.affiliationumDepartment of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationumDepartment of Geological Sciences, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationotherNatural Resource Ecology Laboratory (NREL), Colorado State, Fort Collins, CO 80523, USAen_US
dc.contributor.affiliationotherDepartment of Earth Sciences, University of Santa Cruz, Santa Cruz, CA 95064, USAen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/49284/1/5876_ftp.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1002/hyp.5876en_US
dc.identifier.sourceHydrological Processesen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


Files in this item

Show simple item record