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Bachelor thesis . 2025
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Análisis de subsidencia en el municipio de Ubalá Cundinamarca, entre los años 2016 y 2025

Authors: Alfonso Bejarano, Laura Sofia;

Análisis de subsidencia en el municipio de Ubalá Cundinamarca, entre los años 2016 y 2025

Abstract

El presente estudio analiza la subsidencia en el municipio de Ubalá, Cundinamarca, durante los años de 2016 a 2025 mediante técnicas de interferometría SAR diferencial (DInSAR) aplicadas a imágenes Sentinel-1. Se emplearon pares interferométricos de órbitas ascendentes y descendentes para estimar la deformación vertical del terreno y generar mapas de desplazamiento corregidos geométricamente. Los resultados evidencian patrones diferenciales de hundimiento en sectores del sureste del municipio, asociados a la cercanía con el embalse del Guavio y a zonas de explotación minera, con tasas máximas que alcanzan valores significativos en algunos periodos de tiempo. Asimismo, se identificaron áreas de leve levantamiento hacia el norte del territorio. Los hallazgos sugieren que la interacción entre la carga hidráulica, actividad minera y condiciones geomorfológicas podría explicar la dinámica de subsidencia observada. Este análisis aporta información de interés para la gestión del riesgo y la planificación territorial del municipio de Ubalá.

This study analyzes subsidence in the municipality of Ubalá, Cundinamarca, from 2016 to 2025 using differential SAR interferometry (DInSAR) techniques applied to Sentinel-1 images. Interferometric pairs of ascending and descending orbits were used to estimate vertical ground deformation and generate geometrically corrected displacement maps. The results show differential subsidence patterns in southeastern sectors of the municipality, associated with proximity to the Guavio reservoir and mining areas, with peak rates reaching significant values ​​during certain periods. Areas of slight uplift were also identified in the northern part of the territory. The findings suggest that the interaction between hydraulic head, mining activity, and geomorphological conditions could explain the observed subsidence dynamics. This analysis provides valuable information for risk management and land-use planning in the municipality of Ubalá.

Especialización

Country
Colombia
Related Organizations
Keywords

InSAR, ground deformation, Sentinel-1, subsidencia, Ubalá, Desplazamiento del terreno, subsidence

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green