Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina

Caleta Valdés is an area constituted by a set of Holocene and Pleistocene gravel beach ridges, which form part of a barrier spit system. Longshore drift has been predominantly north to south for the last 5700 years. Evolution of the area has been monitored during the last 28 years. In this period, t...

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Autores principales: Kokot, R.R., Monti, A.A.J., Codignotto, J.O.
Formato: JOUR
Materias:
Argentine coast
Barrier spit
Holocene evolution
Littoral drift
Rapid changes
barrier island
beach ridge
coastal evolution
coastal morphology
spit
Argentina
Caleta Valdes
Chubut
South America
Valdes Peninsula
Western Hemisphere
World
Caleta
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07490208_v21_n5_p1021_Kokot
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_07490208_v21_n5_p1021_Kokot
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spelling todo:paper_07490208_v21_n5_p1021_Kokot2023-10-03T15:39:07Z Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina Kokot, R.R. Monti, A.A.J. Codignotto, J.O. Argentine coast Barrier spit Holocene evolution Littoral drift Rapid changes barrier island beach ridge coastal evolution coastal morphology spit Argentina Caleta Valdes Chubut South America Valdes Peninsula Western Hemisphere World Caleta Caleta Valdés is an area constituted by a set of Holocene and Pleistocene gravel beach ridges, which form part of a barrier spit system. Longshore drift has been predominantly north to south for the last 5700 years. Evolution of the area has been monitored during the last 28 years. In this period, the northern spit has been growing southward, and its rate has increased from 25-meter per annum (1971-87), to 89-meter per annum (1987-96). During the 1996-9 time span, growth has increased up to 167-meter per annum. This growth rate implies an average movement of approximately 1400 metric tons of gravel a day during the last four years. The growth rate during the time span under study can be represented by a polynomial equation of the third order. Spit evolution can be predicted from this equation. It is thus possible to suggest that Caleta Valdés is likely to close by 2002 (±). Such a morphological change will cause drastic changes in hydrodynamics, and environmental conditions due to changes in both water salinity and temperature. Fil:Kokot, R.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Monti, A.A.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Codignotto, J.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07490208_v21_n5_p1021_Kokot
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentine coast
Barrier spit
Holocene evolution
Littoral drift
Rapid changes
barrier island
beach ridge
coastal evolution
coastal morphology
spit
Argentina
Caleta Valdes
Chubut
South America
Valdes Peninsula
Western Hemisphere
World
Caleta
spellingShingle Argentine coast
Barrier spit
Holocene evolution
Littoral drift
Rapid changes
barrier island
beach ridge
coastal evolution
coastal morphology
spit
Argentina
Caleta Valdes
Chubut
South America
Valdes Peninsula
Western Hemisphere
World
Caleta
Kokot, R.R.
Monti, A.A.J.
Codignotto, J.O.
Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina
topic_facet Argentine coast
Barrier spit
Holocene evolution
Littoral drift
Rapid changes
barrier island
beach ridge
coastal evolution
coastal morphology
spit
Argentina
Caleta Valdes
Chubut
South America
Valdes Peninsula
Western Hemisphere
World
Caleta
description Caleta Valdés is an area constituted by a set of Holocene and Pleistocene gravel beach ridges, which form part of a barrier spit system. Longshore drift has been predominantly north to south for the last 5700 years. Evolution of the area has been monitored during the last 28 years. In this period, the northern spit has been growing southward, and its rate has increased from 25-meter per annum (1971-87), to 89-meter per annum (1987-96). During the 1996-9 time span, growth has increased up to 167-meter per annum. This growth rate implies an average movement of approximately 1400 metric tons of gravel a day during the last four years. The growth rate during the time span under study can be represented by a polynomial equation of the third order. Spit evolution can be predicted from this equation. It is thus possible to suggest that Caleta Valdés is likely to close by 2002 (±). Such a morphological change will cause drastic changes in hydrodynamics, and environmental conditions due to changes in both water salinity and temperature.
format JOUR
author Kokot, R.R.
Monti, A.A.J.
Codignotto, J.O.
author_facet Kokot, R.R.
Monti, A.A.J.
Codignotto, J.O.
author_sort Kokot, R.R.
title Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina
title_short Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina
title_full Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina
title_fullStr Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina
title_full_unstemmed Morphology and short-term changes of the Caleta Valdés barrier spit, Argentina
title_sort morphology and short-term changes of the caleta valdés barrier spit, argentina
url http://hdl.handle.net/20.500.12110/paper_07490208_v21_n5_p1021_Kokot
work_keys_str_mv AT kokotrr morphologyandshorttermchangesofthecaletavaldesbarrierspitargentina
AT montiaaj morphologyandshorttermchangesofthecaletavaldesbarrierspitargentina
AT codignottojo morphologyandshorttermchangesofthecaletavaldesbarrierspitargentina
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