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STUDY OF TELECONNECTIONS: THE WATER SUPPLY OF SANTA MARTA CITY ITS SUPPLYING BASINS VERSUS MACRO CLIMATIC PHENOMENA
Estudio De Teleconexiones: Oferta Hídrica En Santa Marta Versus Fenómenos Macroclimáticos.
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STUDY OF TELECONNECTIONS: THE WATER SUPPLY OF SANTA MARTA CITY ITS SUPPLYING BASINS VERSUS MACRO CLIMATIC PHENOMENA. (2024). Revista EIA, 21(41), 4107 pp. 1-19. https://doi.org/10.24050/reia.v21i41.1721
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In recent years, episodes of reduced water availability have occurred in the supplying basins of the city of Santa Marta, leading to a scarcity of water resources. This study delves into understanding the sensitivity of water supply to the macro-climatic phenomena of ENSO (El Niño-Southern Oscillation) and QBO (Quasi-Biennial Oscillation). To assess their influence, teleconnections were established through correlational analysis between hydro climatological series and macroclimatic indices, with statistical significance evaluated using the Student’s t-test. The obtained results indicate that the ENSO phenomenon has a statistically significant impact on the hydro-meteorological regime of the area. During the warm phase of the event, there is an increase in average temperatures and a decrease in water availability in the Manzanares and Piedras river basins. Conversely, the Gaira River basin experiences increased water availability due to the melting of the glaciers in the Sierra Nevada de Santa Marta caused by rising temperatures, resulting in an increase in runoff. Given the proximity of the study area to the Pacific Ocean, where the ENSO phenomenon originates, the macro-climatic signal manifests on the hydroclimatic regime during the same month. On the other hand, the analysis of teleconnections between hydro-meteorological variables and the Quasi-Biennial Oscillation event revealed that there is no statistically significant relationship between these variables. This indicates that the water regime is not dependent on this macro-climatic phenomenon. In conclusion, the water regime in the supplying basins of the city of Santa Marta is influenced by ENSO to a degree of 17 to 33%, and the lack of hydrological monitoring in one of the basins makes the city’s water supply system vulnerable. Therefore, it is proposed to conduct a study for instrumenting the basins to establish an efficient monitoring system for proper water resource management and city water supply
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