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United States Department of Agriculture

Agricultural Research Service

Research Project: Parameterization of Stream Tubes Identified with Apparent Soil Electrical Conductivity Directed Sampling Project Number: 5310-61000-016-14
Project Type: Specific Cooperative Agreement

Start Date: Sep 13, 2013
End Date: Aug 18, 2016

Objective:
To parameterize selected physical and chemical properties of stream tubes that have been identified using soil sampling directed by apparent soil electrical conductivity (ECa) as a means of modeling salt transport at field scale for site-specific salinity and irrigation management.

Approach:
The approach uses the ECa-directed soil sampling protocols developed by Corwin and Lesch (2003, 2005, 2013) and the stream-tube approach of Corwin et al. (1999) as a basis for delineating stream tubes used in the spatial parameterization of field-scale functional and mechanistic solute transport models. Once stream tubes are defined using the geometric mean and ratio of horizontal and vertical coil configuration measurements with the Geonics EM38, randomly selected sites within each stream tube will be chosen for parameterization. At the selected sites physical and chemical parameters will be determined for a selected solute transport model, such as UNSATCHEM or TETrans.

Last Modified: 9/3/2014
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