Comparación de índices de sequía univariables y multivariables basados en datos satelitales para la monitorización de sequías hidrológicas en el ARA Sur, Mozambique

  1. Araneda-Cabrera, Ronnie J. 1
  2. Bermúdez, María 2
  3. Puertas, Jerónimo 1
  4. Penas, Víctor 3
  1. 1 Universidade da Coruña
    info

    Universidade da Coruña

    La Coruña, España

    ROR https://ror.org/01qckj285

  2. 2 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

  3. 3 Augas de Galicia
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Revista:
Ingeniería del agua

ISSN: 1134-2196

Ano de publicación: 2022

Volume: 26

Número: 3

Páxinas: 217-229

Tipo: Artigo

DOI: 10.4995/IA.2022.18037 DIALNET GOOGLE SCHOLAR lock_openAcceso aberto editor

Outras publicacións en: Ingeniería del agua

Resumo

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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