ImpactU Versión 3.11.2 Última actualización: Interfaz de Usuario: 16/10/2025 Base de Datos: 29/08/2025 Hecho en Colombia
Efecto de las variables climáticas y uso del suelo sobre la oferta hídrica en la Cuenca del Río Gachaneca (Boyacá-Colombia) como escenario para la gestión integral del recurso hídrico
The Gachaneca river basin shows a decreasing water supply and an increasing frequency of atypical dry events. This work studies the variability of minimum and maximum temperature and standardized precipitation indices in the basin area between the years 1982 and 2015, and evaluated the relation among these variables with El Niño Southern Oscillation (ENSO), North Atlantic Oscillation (NAO), and Quasi-Biennial Oscillation (OCB) by canonical correlation analysis. The results reveal that percentages of variance explained by macroclimatic phenomena in December-February range between 34% and 38%, in March-May between 15% and 20%, in June-August between 15% and 25% and in September- November between 21% and 34%. The most influential phenomenon is ENSO, followed by NAO. In the warm phases of ENSO, the basin is more exposed to dry events increasing the depletion risk of the resource especially in the period DJF.