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Salt chemistry effects on salinity assessment in the Arkansas River Basin, Colorado

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dc.contributor.authorCooper, Curtis Allen, author
dc.contributor.authorCardon, G. E. (Grant Edmund), author
dc.contributor.authorDavis, Jessica, author
dc.contributor.authorColorado Water Resources Research Institute, publisher
dc.coverage.spatialColorado
dc.date.accessioned2007-01-03T04:16:15Z
dc.date.available2007-01-03T04:16:15Z
dc.date.issued2006
dc.descriptionCompletion Report 206.
dc.descriptionMarch 2006.
dc.description.abstractCalibration equations developed in this research, use either depth averaged or depth weighted salt concentrations and/or predicted pore water salt concentrations from Visual Minteq. For example, the current Downstream sub-region calibration equation relating EM readings to soil ECe has an R2 of 0.54 with an root mean square error (RMSE) of 2.16 dS m-1. The equation from this research, using depth weighted Mg concentrations and SAR with Visual Minteq has an R2 of 0.93 with a RMSE of 1.34 dS m-1, and is effective for both the Upstream and Downstream sub-regions. Validation of these equations suggests that predictability is equivalent between the initial sub-region model and the models for the entire region. The inclusion of the chemistry/mineralogy in the calibration equations serves to resolve some of the unevenness of the EMv-ECe calibration, but at the cost of more complex computing and data requirements. However, the inclusion of the chemical data offers an alternate approach not yet utilized in extrapolating the calibration of the EM-38 from a field to a regional scale.
dc.description.sponsorshipProject 2004CO99B.
dc.format.mediumreports
dc.identifierCOMP206.pdf
dc.identifierCCRICWRI100005CRPT
dc.identifier.urihttp://hdl.handle.net/10217/699
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationWWDL
dc.relation.ispartofCompletion Reports
dc.relation.ispartofCompletion report (Colorado Water Resources Research Institute), no. 206
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectSalinity -- Arkansas River Watershed
dc.subjectSoils, Salts in -- Arkansas River Watershed
dc.subjectWatershed management -- Arkansas River Valley
dc.subjectWater-supply, Agricultural -- Arkansas River Watershed
dc.subjectEnvironmental monitoring -- Arkansas River Watershed
dc.subjectArkansas River Valley
dc.titleSalt chemistry effects on salinity assessment in the Arkansas River Basin, Colorado
dc.typeText
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Salt chemistry effects on salinity assessment in the Arkansas River Basin, Colorado
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