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- Title
Diseño de una red de muestreo espacial que optimiza la estimación de parámetros de la función de covarianza para la medición pluviométrica en el departamento de Cundinamarca.
- Authors
Pinzón Rodriguez, Roverth Steven; Pulido Ávila, Juan Sebastián; Santa Guzmán, Luis Fernando; Gómez Rodríguez, Luis Fernando
- Abstract
In this study, a methodology was carried out to design a spatial sampling network through the optimization of the estimation of the parameters of the covariance function using rainfall data from the Department of Cundinamarca obtained from the IDEAM for the year 2007. A variability model was constructed using an analysis of spatial dependence which served as the basis to simulate various sample sizes through the Annealing simulation algorithm. The Fisher matrices and covariance matrices of the parameters estimated by maximum likelihood (ML) were compared in order to obtain the best estimate of the parameters of the spatial process. In order to perform the process, routines were implemented in the R 3.0.0 software. Although the Fisher matrix was not a good approximation of the covariance matrix of the ML estimators, it can be used as a design criterion if the relationship between them is monotonic, as a result a better spatial sampling network was found with the estimation of optimal parameters which also comply with the recommendations set by the World Meteorological Organization (WMO). This serves as a basis for relocating the existing network stations whose implementation does not meet the purposes of optimal sampling due to the lack of technical criteria for their design, which causes defects of overlap and spatial sampling discontinuities. The relocation process was able to minimize the variance of the prediction, which will improve the measurements of the variable in the region. As a result, planners can make better decisions to prevent future disasters, improve sustainable development and raise the level of knowledge of the human individual with regards to the natural environment that surrounds them.
- Publication
UD y la GEOMÁTICA, 2013, Issue 7, p75
- ISSN
2011-4990
- Publication type
Article
- DOI
10.14483/udistrital.jour.udgeo.2013.7.a08