Análisis de Fisher-Shannon de la tasa de flujo del río São Francisco: la influencia de presas y embalses

Autores/as

DOI:

https://doi.org/10.33448/rsd-v9i10.8852

Palabras clave:

Análisis de fisher-shannon; Río San Francisco; Reservatórios.

Resumen

Investigamos cómo la construcción de las presas de Sobradinho y Xingó afectó el caudal diario del río San Francisco, utilizando el análisis de Fisher-Shannon. Se analizaron las series temporales de caudal diario de las estaciones fluviométricas Juazeiro / BA y Pan de Azucar / AL que se ubican aguas abajo de los embalses de Sobradinho y Xingó para los períodos anteriores a la construcción de ambos embalses, luego de la construcción de Sobradinho y antes de la construcción de Xingó, y después de la construcción de ambos embalses. Aplicamos el análisis de Fisher-Shannon a sub series de caudal y en ventanas móviles, evaluando las diferencias mediante la prueba de Kruskal-Wallis. Este método cuantifica simultáneamente las propiedades locales y globales de la función de densidad de probabilidad de la señal analizada. Observamos que en el régimen natural el grado de organización temporal de la serie de caudales disminuyó con el aumento del área de drenaje. Posteriormente a la construcción de Sobradinho el grado de regularidad de la dinámica del caudal fluvial disminuyó en comparación con el régimen natural, luego de la construcción del Xingó observamos una dinámica fluvial más regular y organizada. Así, las operaciones de los embalses cambiaron el grado de regularidad y organización temporal de la serie de caudales, como lo indican los valores de entropía y de información de Fisher, respectivamente.

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Publicado

06/10/2020

Cómo citar

BARRETO, Íkaro D. de C. .; SANTOS, E. F. N. .; STOSIC, T. Análisis de Fisher-Shannon de la tasa de flujo del río São Francisco: la influencia de presas y embalses. Research, Society and Development, [S. l.], v. 9, n. 10, p. e5159108852, 2020. DOI: 10.33448/rsd-v9i10.8852. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/8852. Acesso em: 30 jun. 2024.

Número

Sección

Ciencias Agrarias y Biológicas