Radioactive Material Safety Data Sheet: Cesium137 Page 3 of 3 Part 6 – NonRadiological Hazards No potential health effects are known regarding nonradiological hazards associated with cesium. However, large oral doses of the material may cause gastrointestinal disturbances. Chronic effects are not known at .
Redistribution of Cesium137 as an example of a chemical indicator of environmental stress. Abstract The use of the artificiallyproduced radioactive isotope Cesium137 for the measurement of soil erosion is examined in this article as an example of the development of a chemical indicator of a specific environmental stress.
Pulsed Redistribution of a Contaminant Following Forest Fire: Cesium137 in Runoff Mathew P. Johansen,* Thomas E. Hakonson, F. Ward Whicker, and David D. Breshears ABSTRACT Watson and The Core Writing Team, 2001); and mobilOf the natural processes that concentrate dispersed environmental ity of dispersed radionuclides (Kashparov et al., 2000;
137 Cs inventories and sediment core records. MESALES model. Representative Pilot Catchments. WaterSed. model. 137. Cs inventories. in soils across the Loire river basin (16*16 km grid) Erosion hazard map. Calculation of soil redistribution rates () Model soil redistribution during the last 50 years. Collect sediment cores in ponds at ...
The results of the tillage experiments were compared with the medium to longterm soil redistribution history as derived from cesium137 redistribution. The cesium137 results clearly show that the fieldscale pattern of erosion at this Saskatchewan site corresponds to the .
We used the Cesium137 (137 Cs) tracer technique to identify the pattern of soil constituent distribution and soil quality differences between the two tillage practices. The 137 Cs residual rate for the CT practice ranged from −% to % with an average of −%, and the TT practice ranged from −% to % with an average of −%.
Redistribution of Cesium137 as an example of a chemical indicator of environmental stress Environmental Monitoring and Assessment 1990 15:3 Estimation of erosion using the radionuclide caesium137 in three diverse areas in eastern Australia Applied Geography 1993 13:2
Abstract. Use of the fallout radionuclide cesium137 (137 Cs) as a tracer has been widely employed for assessment of soil losses and dating of deposited sediment; however, few studies have been conducted in karst environments using this this study, the 137 Cs technique was employed to assess sediment deposition rates in a depression in a small catchment of southwest China.
The 137Cs technique has been widely used to provide soil redistribution estimates since the 1970s. However, most 137Csconversion models remain theoretical and largely unvalidated. Our objectives were to validate the four widely used conversion models, examine model parameter sensitivity, and evaluate
Distributionof cesiumL37inuncultivatedBlackChernozemiclandscapes. Can. J. Soil Sci. 74: 115117. The spatial distribution of cesium137 was examined at two uncultivated sites in the Black soifzone of Saskatchewan. Although considerable variability occurred at both sites, the variability was not systematically related to_landscape position.
Soil Science Society of America Journal Abstract Agricultural Erosion Indicated by 137Cs Redistribution: II. ... Use of cesium137 methodology in the evaluation of superficial erosive processes ... A simple model of Cs137 profile to estimate soil redistribution in cultivated stony .
redistribution of the cesium137 deposited by the fallout were initiated, once its distribution in the landscape could reflect the magnitude of the erosion processes (Ritchie et al., 1974). Behavior of cesium137 in the soil: Cesium137 is a monovalent cation with .
Cesium137 (137Cs), a radionuclide byproduct of atomic testing, is a stratigraphic marker specific to the period of aboveground nuclear tests (1950s70s), used to trace the movement of surficial material in terrestrial landscapes . Its halflife is short ( y) and its utility as a tracer will be of limited duration.
Sedimentassociated redistribution of caesium137 A further critical assumption of the caesium137 technique is that after the initial fixing of fallout radionuclides within the upper horizons of the soil, all subsequent redistribution of radiocaesium will take place in association with the movement of soil and sediment particles.