The guadalete river basin
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Transcript of The guadalete river basin
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The Guadalete River Basin and
Estuary
F.-Javier Gracia [email protected]
Coastal and Marine Geology and Geophysics Research Group
Dept. of Earth Sciences
University of Cádiz
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CÁDIZ PROVINCE
GUADALQUIVIR ESTUARY
STRAIT OF GIBRALTAR
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THE ALPINE MEDITERRANEAN MOUNTAIN RANGES AND OROGENS
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THE BETIC CORDILLERA
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MAIN ANDALUSIAN RIVER BASINS
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TOPOGRAPHY
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RELIEF
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MAIN PHYSIOGRAPHIC REGIONS
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GEOLOGY OF CÁDIZ
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MAIN AQUIFERS IN THE BASIN
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THE GUADALETE RIVER BASIN
Water discharge: about 600 hm3/yr
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MAIN ANNUAL PRECIPITATION
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PLUVIAL EROSIVITY – SOIL EROSION
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NATURAL PROTECTED AREAS
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The basin head and upper valleys
Sierra de Grazalema
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ZAHARA RESERVOIR
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The northern mountain sector
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The intermediate hills (campiña)
and the big reservoirs
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ARCOS DE LA FRONTERA
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THE ARCOS AND BORNOS RESERVOIRS
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LOS HURONES RESERVOIR
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The lower valleys and lowlands
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The Guadalete estuary and the coast
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Bay of Cádiz
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Holocene evolution
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Martínez del Pozo (2000)
Recent evolution of coastline
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Recent evolution of coastline
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1956 2002
Recent evolution of coastline
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Salt marshes
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Salt marshes
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Tidal channels
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Tidal channels
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Sea level trends for Cádiz city
(Tidal gauge records, 1961 – 2008)
Permanent Service for Mean Sea Level
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Present Guadalete estuary at El Puerto de Santa María
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