Fine Grain Sediment Transport Over A Coarse Grain Gravel Bed: Flushing The Fines

LaGreca , Tony 1 ; Pitlick , John 2 1 University of Colorado Department of Geography 2 University of Colorado Department of Geography Flume experiments were conducted on a bimodal sediment mixture of sand and gravel, to better understand the effects of surface sand concentrations on flow properties and to...

Linking Unsteady Flow, Hyporheic Dynamics And Biogeochemistry In A Glacial Meltwater Stream

Koch , Joshua 1 ; McKnight , Diane 2 ; Neupauer , Roseanna 3 1 INSTAAR/USGS 2 INSTAAR 3 CEAE Streamflow in the McMurdo Dry Valleys, Antarctica occurs over 12-14 weeks of the austral summer, and is generated by glacial melt. The magnitude of melt depends on the angle of...

Effects Of Simulated Flood Disturbances On Didymosphenia Geminata

Ianniello , Richard S 1 1 University of Colorado In order to assess the resilience of the nuisance diatom didymosphenia geminata in relation to flood disturbances, a simulation technique was developed to measure the loss of algal material due to flooding over a period of time. The diatom is of...

Assessing The History Of Water On Mars Through Global Analysis Of Valley Networks

Hynek , Brian M 1 ; Beach , Michael 2 ; Hoke , Monica RT 3 1 University of Colorado 2 University of Colorado 3 University of Colorado Valleys on Mars are thought to have been formed by precipitation and surface runoff as well as groundwater processes, and the relative...

Roaming Zones Of Precipitation On Ancient Mars As Recorded In Valley Networks

Hoke , Monica R. T. 1 ; Hynek , Brian M. 2 1 University of Colorado, Dept. of Astrophysical and Planetary Sciences, LASP 2 University of Colorado, Dept. of Geological Sciences, LASP Introduction: Valley networks (incised valleys thought to be akin to dried up river beds) provide a record for...

Water Vapor Jets In Enceladus鈥� Plume

Hansen , Candice J 1 ; Esposito , Larry W 2 ; Stewart , A Ian 3 ; Meinke , Bonnie K 4 ; Wallis , B 5 ; Colwell , Joshua E 6 ; Hendrix , Amanda R 7 ; , et al. 8 4 Presenting Author 1 Jet...

Hydro-Kansas Research Project: Multi-Scale Dynamical Understanding Of Statistical Scale Invariance In Floods And Riparian Evapotranspiration In River Networks

Gupta , Vijay 1 1 CEAE Abstract The Hydro-Kansas (HK) is a multi-institutional, multi-investigator, multi-disciplinary research project. It represents the first illustrative example of a Natural Laboratory (NL), as described in the Water, Earth, Biota (WEB) report to the National Science Foundation ( http://cires.colorado.edu/hydrology ). HK combines theoretical analyses, numerical...

Hydrology At The Bottom Of The World - A Key Influence Of Ecosystem Dynamics In The McMurdo Dry Valleys, Antarctica

Gooseff , Michael 1 1 Penn State University In numerous extreme environments on Earth, the notion that 鈥渨here there is water, there is life鈥� has generally held. The 鈥榖arren鈥� landscape of the McMurdo Dry Valleys, Antarctica, characterized by harsh conditions (e.g., air temperature ranges from <-40鈦癈 to >0鈦癈), is no...

Airborne Soil Moisture Mapping In Support Of Relief Efforts In Texas During Flooding Events Of 2007

Gasiewski , Albin J 1 ; McIntyre , Eric M 2 ; Manda , Damian 3 ; Klein , Marian 4 ; Wells , Gordon 5 ; Howard , Theresa 6 ; Jackson , Thomas 7 1 CU/ECE Center for Environmental Technology 2 CU/ECE Center for Environmental Technology 3 CU/ECE...

Non-Parametric Paleo-Reconstruction Of Lees Ferry Annual Streamflow Ensembles

Gangopadhyay , Subhrendu 1 1 AMEC Hydrosphere A non-parametric method for paleohydrologic reconstruction (NPP) of streamflows using tree-ring chronologies is developed. The method uses pattern matching of chronologies in EOF-space (Empirical Orthogonal Function) to identify a set of K-nearest neighbors (similar years) from a contemporary period (common period of tree-ring...

Pages