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Creator:: Yin, Jun, Haggerty, Roy, Stoliker, Deborah L., Kent, Douglas B., Istok, Jonathan D., Greskowiak, Janek, and Zachara, John M.
Abstract:: In the 300 Area of a U(VI)-contaminated aquifer at Hanford, Washington, USA, inorganic carbon and major cations, which have large impacts on U(VI) transport, change on an hourly and seasonal basis near the Columbia River. Batch and column experiments were conducted to investigate the factors controlling U(VI) adsorption/desorption by changing...
Resource Type:: Article
Full Text:: ,2 Douglas B. Kent,2 Jonathan D. Istok,3 Janek Greskowiak,4,5 and John M. Zachara6 Received 27

Creator:: Jackson, Tracie R., Haggerty, Roy, Apte, Sourabh V., and O’Connor, Ben L.
Abstract:: Accurate estimates of mass-exchange parameters in transient storage zones are needed to better understand and quantify solute transport and dispersion in riverine systems. Currently, the predictive mean residence time relies on an empirical entrainment coefficient with a range in variance due to the absence of hydraulic and geomorphic quantities driving...
Resource Type:: Article
Full Text:: � 106John Day River (Re< 3.0

Creator:: Gonz alez-Pinz on, Ricardo and Haggerty, Roy
Abstract:: We provide an efficient method to estimate processing rates through simple algebraic relationships derived from the transient storage model equations. The method is based on the transport equations, but eliminates the need to calibrate highly uncertain (and intermediate) parameters. We demonstrate that under some common stream transport conditions dispersion does...
Resource Type:: Article
Full Text:: ; � proxy �;sz h i ; if Kproxytarget ¼ <1; < 1½ � �proxy�;sz K proxy target min; � proxy �;sz K proxy

Creator:: Zarnetske, Jay P., Haggerty, Roy, Wondzell, Steven M., Bokil, Vrushali A., and Gonzalez-Pinzon, Ricardo
Abstract:: The fate of biologically available nitrogen (N) and carbon (C) in stream ecosystems is controlled by the coupling of physical transport and biogeochemical reaction kinetics. However, determining the relative role of physical and biogeochemical controls at different temporal and spatial scales is difficult. The hyporheic zone (HZ), where groundwater–stream water...
Resource Type:: Article
Full Text:: ) Aerobic Respiration CH2O þ O2 ! CO2 þH2O �501 Nitrification O2 þ (1=2)NHþ4 ! (1=2)NO�3 þ H þ þ (1=2)H2O

Creator:: Gonz alez-Pinz on, Ricardo, Haggerty, Roy, and Dentz, Marco
Abstract:: We investigated scaling of conservative solute transport using temporal moment analysis of 98 tracer experiments (384 breakthrough curves) conducted in 44 streams located on five continents. The experiments span 7 orders of magnitude in discharge (10⁻ ³ to 10³ m³/s), span 5 orders of magnitude in longitudinal scale (10¹ to...
Resource Type:: Article

Creator:: Haggerty, Roy, Harvey, Charles F., von Schwerin, Claudius Freiherr, and Meigs, Lucy C.
Abstract:: Estimates of mass transfer timescales from 316 solute transport experiments reported in 35 publications are compared to the pore-water velocities and residence times, as well as the experimental durations. New tracer experiments were also conducted in columns of different lengths so that the velocity and the advective residence time could...
Resource Type:: Article
Full Text:: Parsons Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. 3Now at John

Creator:: Jackson, Tracie R., Haggerty, Roy, Apte, Sourabh V., Coleman, Anthony, and Drost, Kevin J.
Abstract:: Surface transient storage (STS) has functional significance in stream ecosystems because it increases solute interaction with sediments. After volume, mean residence time is the most important metric of STS, but it is unclear how this can be measured accurately or related to other timescales and field-measureable parameters. We studied mean...
Resource Type:: Article
Full Text:: State University McDonald-Dunn Research Forest near Corvallis, OR; JD = Middle Fork of John Day River

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