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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/85| SIMULACIÓN DE LA DISPERSIÓN DE RADIONÚCLIDOS EN EL VALLE DE CHIHUAHUA | |
| LUIS MIGUEL RODRIGUEZ VAZQUEZ | |
| EDUARDO FLORENCIO HERRERA PERAZA JOSE AGUSTIN GARCIA REYNOSO ARON JAZCILEVICH DIAMANT | |
| Acceso Abierto | |
| Atribución | |
| Air quality in a city with an important industrial and human development, is taking more and more relevance as a part of a background of sustainable development. The space and time distribution of radioactive particles (containing elements like 238U, 232Th, 40K, 7Be and 137Cs) has being studied in Chihuahua City, Mexico, by means of several sampling campaigns during the years of 2003, 2005 and 2007. In order to assess the behavior of the model in meteorological terms as much as in the isotope transport the data from March 6th to 8th and from April 11th to 13th 2007 have been analyzed. A Multiscale Model denominated MCCM has implemented along with Erosion Model named WEPS (Wind Erosion Prediction System). WEPS is a process-based, continuous, daily time-step model that simulates weather, field conditions, and erosion while MCCM is based on the Fifth Generation Mesoscale Model MM5.The soil samples collected during the period were analyzed by means of gamma spectrometry using a hyper pure germanium detector. The obtained results were processed using SURFER, which is an outline and threedimensional surface plotting software, in order to establish the space distribution of the radionuclide in the studied area. The results showed similarities between 137Cs and 7Be, and between 238U, 232Th and 40K remains a significant relationship in the distribution of natural radionuclide in the study area as well as between the cesium and beryllium. These results were reproduced by means of the MCCM, to which the isotopes of interest were incorporated as new variables. The obtained results match with those observed experimentally in 2007 when they were analyzed with visualization software. As later objectives to this work the analysis of the periods 2003 and 2005 will be added, in order to confirm the good performance of the model and carry out predictive calculations about the transport and distribution of the interest elements according to the weather conditions in the zone during the analysis periods. | |
| 20-10-2009 | |
| Tesis de doctorado | |
| Español | |
| QUÍMICA | |
| Aparece en las colecciones: | Doctorado en Ciencia y Tecnología Ambiental |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Tesis Luis Miguel Rodríguez Vázquez.pdf | 4.73 MB | Adobe PDF | Visualizar/Abrir |