Análisis espacial del impacto de los fenómenos de subsidencia en el valor del suelo, por manzana catastral, en los tramos comprendidos entre la carrera séptima hasta la carrera once, y la calle 92 hasta la calle 100, para el año 2021

Abstract

The purpose of this project was focused on identifying if exits any relationship between the terrain value, in squared meters for cadastral square, and the subsidence phenomenon, looked in ground visits that were made over the study zone, which is delimitated between seventh and eleventh avenues, and the 92th street and the 100th street, on the north of Bogota city - Colombia. The analysis was carried out by the development of a spatial econometric model that allowed the characterization of the phenomenon, taking into account not only alphanumerical data but spatial data. For the consolidation of the information, it was used technologic tools as Survey 123 (for the capture of ground information) and the use of geographic data, reached through secondary sources, such as, for example, the IDECA (Spatial Data Infrastructure for the Capital District of Bogota) geoportal, like the base of the creation, and implementation, of the Geographic Information System (GIS). By this way, it was done the subsidence phenomenon characterization on the study zone, starting with the terrain value, in squared meters for cadastral square, the terrain geology, the geotechnical information, the use of the land and the seismic response, between others. Subsequently, it proceeded the generation of the spatial econometric model, with different explicative variables, determined by the use of bivariate correlograms, understanding the correlation that is present, like an element that can implies a high probability of causality on the studied phenomena, as the seismic response and de presence of slight and moderate displacements. Finally, by the use of the obtained spatial econometric model, it was concluded that the subsidence phenomena has a high probability of influencing on the terrain value for the zone where was focused the study.