bachelorThesis
Aplicación de técnicas de teledetección para el monitoreo de desplazamientos en el barrio las Rosas, cantón Nabón provincia del Azuay
Fecha
2023-03-09Autor
Gordillo Bacuilima, Luis Eduardo
Segarra Flores, Juan Carlos
Institución
Resumen
In the present degree work, landslide velocity (deformation) values in (LOS) were determined
by using satellite images in the Rosas neighborhood, belonging to the Nabón canton; these
images are of the radar type and were acquired in a period of time from 2018 to 2022 in both
ascending and descending orbit. The images were processed using two methods: DInSAR
and PSI/STAMPS, in order to obtain a better view of the behavior of the area before and after
the landslide event. A deformation monitoring was implemented to determine the beginning of
the event in March 2021, year in which a deformation of 25.06 cm per year in descending orbit
and 21.81 cm in ascending orbit was generated with a deformation direction towards the
northwest of the neighborhood. The PSI method generated pixel velocity values for the years
2018, 2019 and 2020 with values of -30.08, -14.8 and -29.04 mm/year respectively in
descending orbit, orbit that was determined as the best to evaluate the behavior of the
neighborhood. In 2021 and 2022, the number of pixels in the Rosas neighborhood was
considerably reduced, which is why the velocity values obtained are not representative. These
results were correlated with annual rainfall data, the values obtained determined that there is
no apparent relationship between the occurrence of rainfall and the ground movement event.