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Full-Text Articles in Physical Sciences and Mathematics

A Tree-Ring Based Reconstruction Of Logan River Streamflow In Northern Utah, Eric B. Allen, Tammy M. Rittenour, R. Justin Derose, Matthew F. Bekker, Roger Kjelgren, Brendan M. Buckley Dec 2013

A Tree-Ring Based Reconstruction Of Logan River Streamflow In Northern Utah, Eric B. Allen, Tammy M. Rittenour, R. Justin Derose, Matthew F. Bekker, Roger Kjelgren, Brendan M. Buckley

Wasatch Dendroclimatology Research

[1] We created six new tree-ring chronologies in northern Utah, which were used with preexisting chronologies from Utah and western Wyoming to reconstruct mean annual flow for the Logan River, the largest tributary of the regionally important Bear River. Two reconstruction models were developed, a “Local” model that incorporated two Rocky Mountain juniper chronologies located within the basin, and a “Regional” model that also included limber pine and pinyon pine chronologies from a larger area. The Local model explained 48.2% of the variability in the instrumental record and the juniper chronologies better captured streamflow variability than Douglas-fir collected within the …


Inverse Method For Simultaneous Determination Of Soil Water Flux Density And Thermal Properties With A Penta-Needle Heat Pulse Probe, Changbing Yang, Masaru Sakai, Scott B. Jones Sep 2013

Inverse Method For Simultaneous Determination Of Soil Water Flux Density And Thermal Properties With A Penta-Needle Heat Pulse Probe, Changbing Yang, Masaru Sakai, Scott B. Jones

Plants, Soils, and Climate Faculty Publications

An accurate method for determination of in situ soil water flux density continues to be the most sought after and yet elusive hydrologic measurement. The penta-needle heat pulse probe (PHPP) employs a central heater needle surrounded by an orthogonal arrangement of four thermistor needles for two-component water flux density estimation. An analytical solution and inverse fitting method are presented for simultaneous estimation of thermal properties and soil water flux density using PHPP measurements. The approach yields estimates of both components of the flux in a plane normal to the axis of the PHPP needles. The method was evaluated using data …


Can The Causeway In The Great Salt Lake Be Used To Manage Salinity, Sarah E. Null, Wayne A. Wurtsbaugh, Craig Miller Apr 2013

Can The Causeway In The Great Salt Lake Be Used To Manage Salinity, Sarah E. Null, Wayne A. Wurtsbaugh, Craig Miller

Watershed Sciences Faculty Publications

No abstract provided.


Research Report: Water User Dimensions Of Meter Implementation On Secondary Pressurized Irrigation Systems, Joanna Endter-Wada, Diana Glenn, Clayton Lewis, Roger Kjelgren, Christopher Neale Apr 2013

Research Report: Water User Dimensions Of Meter Implementation On Secondary Pressurized Irrigation Systems, Joanna Endter-Wada, Diana Glenn, Clayton Lewis, Roger Kjelgren, Christopher Neale

Joanna Endter-Wada

Weber Basin Water Conservancy District (District) secured Bureau of Reclamation funding in spring 2011 to install individual secondary water meters at residential connections in order to implement water efficiency and accountability measures included in the District’s Water Conservation Plan (Weber Basin Water Conservancy District, 2010). Initially, the District will not use the meters for billing water use but, instead, will use them to help the District determine if end users are exceeding their contracted allotment of water and to promote water use accountability.The purpose of the study titled “Water User Dimensions of Meter Implementation on Secondary Pressurized Irrigation Systems” conducted …


Can The Causeway In The Great Salt Lake Be Used To Manage Salinity, Sarah E. Null, Wayne A. Wurtsbaugh, Craig Miller Jan 2013

Can The Causeway In The Great Salt Lake Be Used To Manage Salinity, Sarah E. Null, Wayne A. Wurtsbaugh, Craig Miller

Wayne A. Wurtsbaugh

No abstract provided.