Comparación de índices de sequía univariables y multivariables basados en datos satelitales para la monitorización de sequías hidrológicas en el ARA Sur, Mozambique
- Araneda-Cabrera, Ronnie J. 1
- Bermúdez, María 2
- Puertas, Jerónimo 1
- Penas, Víctor 3
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1
Universidade da Coruña
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2
Universidad de Granada
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- 3 Augas de Galicia
ISSN: 1134-2196
Year of publication: 2022
Volume: 26
Issue: 3
Pages: 217-229
Type: Article
More publications in: Ingeniería del agua
Abstract
La sequía es un fenómeno natural que afecta a los sistemas socioeconómicos y medioambientales por lo que su monitorización es clave para minimizar sus impactos. En Mozambique, en el sur de África el 70% de la población depende la agricultura para sobrevivir, y el agua para esta actividad se extrae mayoritariamente directo de los ríos. En este trabajo hemos comparado varios índices de sequía univariables y multivariables calculados con variables provenientes de bases de datos satelitales para definir uno que mejor se ajuste a las condiciones de sequía hidrológica en las cuencas hidrográficas del ARA Sur de Mozambique. Las condiciones hidrológicas se definieron con el Índice Estandarizado de Escorrentía acumulado 3 meses (SRI-3). Mediante relaciones cruzadas y modelos de regresión lineales y no lineales se encontró que el Índice Estandarizado de Precipitación acumulado 3 meses (SPI-3) podría usarse para monitorizar las sequías hidrológicas en esta región en tiempo (casi) real.
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Bibliographic References
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