Análisis SIG para el modelamiento de movimientos de ladera usando software libre en el tramo el Tiro Río Sabanilla de la vía Loja Zamora

Abstract

To quantitatively evaluate the risk of our area of study that includes 20487.18 hectares of territory of action was applied the bivariate statistical method, proposed by the ITC of Holanda, using a free GIS software (Ilwis 3.3). To which through the Geographic Information Systems (GIS) was built a spatial database that includes the slope movements assets that are detected and digization though orthophoto provided by (IGM 2015). The assessment of the susceptibility allowed to classify the area into five classes as they are very low with a percentage of susceptibility from the 5.91%, with a percentage of susceptibility of 19.15%, Moderate, with a percentage of susceptibility of 68.85%, with a high percentage of susceptibility from the 3.20%, and with a very high percentage of susceptibility of just 2.89%, the results showed that areas with a very high susceptibility are those with a slope ranging between 40° and 60° and that are very close to the first order of our area of study.