Browsing by Author "Tixilema Ruiz, Nelly Margoth"

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    Evaluación de la humedad del suelo mediante SIG y SNAP en la cuenca del río Pastaza
    (Universidad Técnica de Cotopaxi (UTC). Facultad de Ciencias de la Ingeniería y Aplicadas. Hidráulica, 2026-10-14) Chicaiza Vargas, Jazmin Noemi; Tixilema Ruiz, Nelly Margoth; Cusme Intriago, Rudys Rafael
    Monitoring water retained in the soil’s superficial part faces challenges in Andean-Amazonian ecosystems, where caused an accident orography rugged terrain and constant cloud limit normal measurements, in this work, it was assessed the spatiotemporal variability of surface moisture in the Pastaza River basin, integrating advanced geoprocessing and remote sensing. The basin delineation through computational processes achieved a Jaccard index of 0.78 compared to the cartography presented by the Environment Ministry. Starting at the study time of January 2025 to January 2026, it was processed Sentinel-1 radar signals and Sentinel-2 multispectral data, by lacking a physical calibration, it was used a multi-criteria spatial index, which isolates noise from biomass and integrates backscatter with topography. The statistical assessment, based on a linear regression model with a deterministic coefficient of 0.04 to 0.30, established the impact of gravitational drainage imposed by the high slopes, this generated cartography is a fundamental exploratory input for decision-makers and the agricultural production sector to structure future early warning mechanisms before water deficits.