Author: R. Knaus 1
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  • 1 Louisiana State University Nuclear Science Center 70803-5820 Baton Rouge LA (USA)
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Abstract  

Instrumental neutron activation analysis (INAA) was employed to estimate sediment accumulations (accretion) in Louisiana in a freshwater wetland habitat four years after the application of rare earth, samarium (Sm) and dysprosium (Dy), soil horizon markers. The sediment cores used to measure accretion also were used to construct a sodium (Na) profile (Na concentration vs. depth) in three locations. Additionally, in a 6-month study INAA data were used to determine the feasibility of using Sm and Dy to estimate the direction and quantity of soil erosion particles in a salt water wetland in Georgia.