Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf

We investigate the effect of the future sea level rise (SLR) on the propagation of tides in the Patagonian Shelf by means of numerical simulations. Using a barotropic implementation of the Model for Applications at Regional Scales (MARS), we obtain solutions for scenarios which represent the present...

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Detalles Bibliográficos
Publicado: 2015
Materias:
amphidromic points
Climate change
tidal fronts
tides modeling
barotropic motion
climate change
dissipation
sea level change
Southern Hemisphere
tidal modeling
wave propagation
Argentina
Atlantic Ocean
Canary Islands
Cape Blanc
Chubut
Gomera
Patagonian Shelf
San Sebastian [Gomera]
Santa Cruz de Tenerife [(PRV) Canary Islands]
Spain
Valdes Peninsula
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v31_n3_p519_LuzClara
http://hdl.handle.net/20.500.12110/paper_07490208_v31_n3_p519_LuzClara
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07490208_v31_n3_p519_LuzClara
record_format dspace
spelling paper:paper_07490208_v31_n3_p519_LuzClara2023-06-08T15:45:21Z Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf amphidromic points Climate change tidal fronts tides modeling barotropic motion climate change dissipation sea level change Southern Hemisphere tidal modeling wave propagation Argentina Atlantic Ocean Canary Islands Cape Blanc Chubut Gomera Patagonian Shelf San Sebastian [Gomera] Santa Cruz de Tenerife [(PRV) Canary Islands] Spain Valdes Peninsula We investigate the effect of the future sea level rise (SLR) on the propagation of tides in the Patagonian Shelf by means of numerical simulations. Using a barotropic implementation of the Model for Applications at Regional Scales (MARS), we obtain solutions for scenarios which represent the present condition and potential future SLRs of 1, 2, and 10 m. The effect of flooding of low-lying areas is studied, and its influence on the propagation of tides in the region is discussed. Due to the coastal morphological features and the sense of tidal wave propagation in the Southern Hemisphere, inundation does not significantly modify the solution in the Patagonian Shelf; nevertheless, results are substantially changed in the much lower Northern Argentinean Shelf, north of 40° S, where dissipation is increased. The amplitude of M<inf>2</inf> responds to SLR in a spatially nonuniform manner. The response is nonlinear, particularly in regions close to the amphidromic points. Tidal dissipation by bottom friction increases consistently by 16% for the more extreme scenario with a generalized increment of tidal amplitudes, and therefore currents, over the Patagonian Shelf. Changes in the extension and position of tidal fronts are also explored. The results suggest that changes will be significant, with a reduction of the mixed areas in Cabo Blanco and San Sebastián and an increment of them in the vicinity of Península Valdés. Physical mechanisms that explain the observed modifications in the tidal regime are the changes with SLR of the speed of the tidal wave, the Rossby radius of deformation, the energy dissipation by bottom friction, and the resonant properties of the basin. Similarly to numerical studies performed for other coastal areas of the world, results indicate that important changes in the characteristics of tides can occur if SLR is large. ©Coastal Education and Research Foundation, Inc. 2015. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v31_n3_p519_LuzClara http://hdl.handle.net/20.500.12110/paper_07490208_v31_n3_p519_LuzClara
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic amphidromic points
Climate change
tidal fronts
tides modeling
barotropic motion
climate change
dissipation
sea level change
Southern Hemisphere
tidal modeling
wave propagation
Argentina
Atlantic Ocean
Canary Islands
Cape Blanc
Chubut
Gomera
Patagonian Shelf
San Sebastian [Gomera]
Santa Cruz de Tenerife [(PRV) Canary Islands]
Spain
Valdes Peninsula
spellingShingle amphidromic points
Climate change
tidal fronts
tides modeling
barotropic motion
climate change
dissipation
sea level change
Southern Hemisphere
tidal modeling
wave propagation
Argentina
Atlantic Ocean
Canary Islands
Cape Blanc
Chubut
Gomera
Patagonian Shelf
San Sebastian [Gomera]
Santa Cruz de Tenerife [(PRV) Canary Islands]
Spain
Valdes Peninsula
Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf
topic_facet amphidromic points
Climate change
tidal fronts
tides modeling
barotropic motion
climate change
dissipation
sea level change
Southern Hemisphere
tidal modeling
wave propagation
Argentina
Atlantic Ocean
Canary Islands
Cape Blanc
Chubut
Gomera
Patagonian Shelf
San Sebastian [Gomera]
Santa Cruz de Tenerife [(PRV) Canary Islands]
Spain
Valdes Peninsula
description We investigate the effect of the future sea level rise (SLR) on the propagation of tides in the Patagonian Shelf by means of numerical simulations. Using a barotropic implementation of the Model for Applications at Regional Scales (MARS), we obtain solutions for scenarios which represent the present condition and potential future SLRs of 1, 2, and 10 m. The effect of flooding of low-lying areas is studied, and its influence on the propagation of tides in the region is discussed. Due to the coastal morphological features and the sense of tidal wave propagation in the Southern Hemisphere, inundation does not significantly modify the solution in the Patagonian Shelf; nevertheless, results are substantially changed in the much lower Northern Argentinean Shelf, north of 40° S, where dissipation is increased. The amplitude of M<inf>2</inf> responds to SLR in a spatially nonuniform manner. The response is nonlinear, particularly in regions close to the amphidromic points. Tidal dissipation by bottom friction increases consistently by 16% for the more extreme scenario with a generalized increment of tidal amplitudes, and therefore currents, over the Patagonian Shelf. Changes in the extension and position of tidal fronts are also explored. The results suggest that changes will be significant, with a reduction of the mixed areas in Cabo Blanco and San Sebastián and an increment of them in the vicinity of Península Valdés. Physical mechanisms that explain the observed modifications in the tidal regime are the changes with SLR of the speed of the tidal wave, the Rossby radius of deformation, the energy dissipation by bottom friction, and the resonant properties of the basin. Similarly to numerical studies performed for other coastal areas of the world, results indicate that important changes in the characteristics of tides can occur if SLR is large. ©Coastal Education and Research Foundation, Inc. 2015.
title Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf
title_short Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf
title_full Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf
title_fullStr Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf
title_full_unstemmed Future Sea Level Rise and Changes on Tides in the Patagonian Continental Shelf
title_sort future sea level rise and changes on tides in the patagonian continental shelf
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07490208_v31_n3_p519_LuzClara
http://hdl.handle.net/20.500.12110/paper_07490208_v31_n3_p519_LuzClara
_version_ 1768545742487552000

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