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Chloride Distributions as Indicators of Vadose Zone Stratigraphy in Palouse Loess Deposits

^a Soil Science Division, Dep. of Plant, Soil, and Entomological Sciences, University of Idaho, Moscow, ID 83844-2339
^b Dep. of Biological & Agricultural Engineering, University of Idaho, Moscow, ID 83844-0904

View larger version (28K): [in a new window]   Fig. 1. Location of the study site showing distribution of soils with hydraulically restrictive horizons in eastern Washington and northern Idaho. Topographic attributes are displayed using a 2-m grid elevation model and location of core samples are indicated with X.

View larger version (27K): [in a new window]   Fig. 2. Pedostratigraphic descriptions and depth profiles of chloride, m, clay, and Mnd/Fed at the summit position. Shading represents zones of soil strength greater than 3.0 kg cm-2.

View larger version (32K): [in a new window]   Fig. 3. Pedostratigraphic descriptions and depth profiles of chloride, m, clay, and Mnd/Fed at the side slope position. Shading represents zones of soil strength greater than 3.0 kg cm-2.

View larger version (20K): [in a new window]   Fig. 4. Pedostratigraphic descriptions and depth profiles of chloride, m, clay, and Mnd/Fed at the valley position. Shading represents zones of soil strength greater than 3.0 kg cm-2.

View larger version (15K): [in a new window]   Fig. 5. Recharge rates calculated from water inventory vs. chloride inventory. Linear-line segments represent constant chloride accumulation.