State Water Resources Research Institute Program

Project ID: 2012KY204B
Title: Field-scale water and bromide transport as affected by land use and rainfall characteristics
Project Type: Research
Start Date: 3/01/2012
End Date: 2/28/2013
Congressional District: KY 6th
Focus Categories: Hydrology, Groundwater, Solute Transport
Keywords: rainfall simulation, spatial variability, scale-dependent variability
Principal Investigator: Wendroth, Ole (University of Kentucky)
Federal Funds: $ 5,000
Non-Federal Matching Funds: $ 10,364
Abstract: The main objective of this project is to quantify the influence of rainfall characteristics on water and bromide transport within and across cropland and grassland (two common land use systems in Kentucky). The study will address the following questions: 1) How do the amount and intensity of rainfall and land use affect the leaching behavior of a surface applied salt, 2) How does the time between surface application of bromide and subsequent rainfall affect the leaching behavior, 3) Can a treatment effect on bromide leaching be identified under field conditions, and 4) Can water and solute transport processes be efficiently modeled under field conditions? Solute sampling devices will be installed in the experimental field site that has been established already with tensiometers and water content access tubes. A bromide tracer will be applied and its downward movement monitored during several sampling campaigns at 48 different locations. Cross-semivariogram and spectral analysis will be used to evaluate the spatial correlation between solute transport properties and rainfall characteristics between and across the two land use systems.

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