Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico
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Redalyc · Ciencias Marinas
Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separated from the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of 420 m, which decreased the width of the estuary mo...
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| Pubblicato in: | Ciencias Marinas |
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| Natura: | Artículo científico |
| Lingua: | es |
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Universidad Autónoma de Baja California
2008
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| _version_ | 1878325299546947584 |
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| author | O Delgado-González |
| author_facet | O Delgado-González |
| collection | Ciencias Marinas |
| container_title | Ciencias Marinas |
| contents | Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico O Delgado-González L Galindo-Bect CR Torres-Navarrete R Cano-Cetina A Martínez-Díaz-de-León R Lizárraga-Arciniega R Blanco-Betancourt E Gil-Silva Ciencias de la Tierra refracción oleaje invernal Estero de Punta Banda transporte de sedimento Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separatedfrom the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of420 m, which decreased the width of the estuary mouth by more than 400 m. Despite the bars rapid growth it has beensuggested that the estuary mouth remains open because in spring, summer and autumn the longshore sand transport isnortheastward, but during winter the longshore sand transport should be toward the southwest, away from the mouth,establishing a balance between the amount of sediment transported both ways. In this study we analyze wave data acquired fromNovember 2004 to March 2005 on the bay side of the sandbar, and for the first time provide the magnitude and direction of thelongshore sand transport during winter. The results show that during this season the dominant waves approach the bay from thewest-northwest and the sandbar from the west, inducing a net longshore sand transport of 817 m3 day1 to the northeast. Thisresult contradicts the hypothesis of a longshore sand transport balance, and shows that throughout a typical year the netlongshore sand transport is to the northeast. The fact that the estuary mouth has not closed up should be attributed to othercauses, such as extraordinary amounts of rain during the rainy season or inequalities between the ebb and flood tidal currentvelocities to the estuary. 2008 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48034106 es http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.34 |
| ctrlnum | oai:cienciasmarinas.com.mx:article/1270 10.7773/cm.v34i1.1270 |
| description | Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separated from the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of 420 m, which decreased the width of the estuary mouth by more than 400 m. Despite the bar's rapid growth it has been suggested that the estuary mouth remains open because in spring, summer and autumn the longshore sand transport is northeastward, but during winter the longshore sand transport should be toward the southwest, away from the mouth, establishing a balance between the amount of sediment transported both ways. In this study we analyze wave data acquired from November 2004 to March 2005 on the bay side of the sandbar, and for the first time provide the magnitude and direction of the longshore sand transport during winter. The results show that during this season the dominant waves approach the bay from the west-northwest and the sandbar from the west, inducing a net longshore sand transport of 817 m3 day–1 to the northeast. This result contradicts the hypothesis of a longshore sand transport balance, and shows that throughout a typical year the net longshore sand transport is to the northeast. The fact that the estuary mouth has not closed up should be attributed to other causes, such as extraordinary amounts of rain during the rainy season or inequalities between the ebb and flood tidal current velocities to the estuary.
El Estero de Punta Banda, localizado dentro de la Bahía de Todos Santos, en el noroeste de la Península de Baja California, se encuentra delimitado hacia el mar por una barra arenosa de 8 km de longitud. De 1972 a 2003 la barra tuvo un crecimiento longitudinal neto de 420 m, lo que redujo el ancho de la boca del estero en más de 400 m. A pesar de dicho crecimiento, se ha sugerido que la boca del estero no se ha cerrado debido a la existencia de un balance anual en los volúmenes de sedimento que se transportan en ambas direcciones a lo largo de la barra. Mientras que mediciones directas indican que en las épocas de primavera, verano y otoño la dirección del transporte litoral de sedimento es hacia el noreste, se ha planteado la hipótesis de que durante la época invernal el transporte litoral en la barra debería ser hacia el suroeste En este trabajo se analizan mediciones de oleaje realizadas de noviembre de 2004 a marzo de 2005 frente a la barra del Estero de Punta Banda y se infiere por primera vez la magnitud y dirección del trasporte litoral de sedimento en esta barra durante la época invernal. Los resultados muestran que durante la época invernal el oleaje dominante que arriba a la bahía proviene del oeste-noroeste, aproximándose a la barra del estero con dirección oeste franco, lo que en combinación con la orientación de la barra induce un transporte litoral de sedimento en dirección noreste, hacia la boca del estero. Este resultado contradice la hipótesis de que durante el invierno la dirección del transporte litoral es hacia el sur y permite establecer que a lo largo de un año típico la dirección dominante del transporte litoral de sedimento en la barra del estero es hacia el noreste. El hecho de que la boca del estero no se haya cerrado debe ser atribuible a otros procesos físicos, como por ejemplo a aportes pluviales extraordinarios durante la época de lluvias o posibles desigualdades entre las velocidades del flujo y reflujo de la marea al estero. |
| format | Artículo científico |
| id | redalyc_48034106 |
| institution | Redalyc Ciencias Marinas |
| language | es |
| publishDate | 2008 |
| publisher | Universidad Autónoma de Baja California |
| spelling | Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico Influencia del oleaje invernal en el crecimiento longitudinal de la barra del Estero de Punta Banda, Bahía de Todos Santos, Baja California, México Martínez-Díaz de León, A Lizarrága-Arciniega, R Delgado-González, O Galindo-Bect, L Torres-Navarrete, CR Blanco-Betancourt, R Gil-Silva, E Cano-Cetina, R winter waves refraction sediment transport Punta Banda Estuary oleaje invernal refracción transporte de sedimento Estero de Punta Banda Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separated from the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of 420 m, which decreased the width of the estuary mouth by more than 400 m. Despite the bar's rapid growth it has been suggested that the estuary mouth remains open because in spring, summer and autumn the longshore sand transport is northeastward, but during winter the longshore sand transport should be toward the southwest, away from the mouth, establishing a balance between the amount of sediment transported both ways. In this study we analyze wave data acquired from November 2004 to March 2005 on the bay side of the sandbar, and for the first time provide the magnitude and direction of the longshore sand transport during winter. The results show that during this season the dominant waves approach the bay from the west-northwest and the sandbar from the west, inducing a net longshore sand transport of 817 m3 day–1 to the northeast. This result contradicts the hypothesis of a longshore sand transport balance, and shows that throughout a typical year the net longshore sand transport is to the northeast. The fact that the estuary mouth has not closed up should be attributed to other causes, such as extraordinary amounts of rain during the rainy season or inequalities between the ebb and flood tidal current velocities to the estuary. El Estero de Punta Banda, localizado dentro de la Bahía de Todos Santos, en el noroeste de la Península de Baja California, se encuentra delimitado hacia el mar por una barra arenosa de 8 km de longitud. De 1972 a 2003 la barra tuvo un crecimiento longitudinal neto de 420 m, lo que redujo el ancho de la boca del estero en más de 400 m. A pesar de dicho crecimiento, se ha sugerido que la boca del estero no se ha cerrado debido a la existencia de un balance anual en los volúmenes de sedimento que se transportan en ambas direcciones a lo largo de la barra. Mientras que mediciones directas indican que en las épocas de primavera, verano y otoño la dirección del transporte litoral de sedimento es hacia el noreste, se ha planteado la hipótesis de que durante la época invernal el transporte litoral en la barra debería ser hacia el suroeste En este trabajo se analizan mediciones de oleaje realizadas de noviembre de 2004 a marzo de 2005 frente a la barra del Estero de Punta Banda y se infiere por primera vez la magnitud y dirección del trasporte litoral de sedimento en esta barra durante la época invernal. Los resultados muestran que durante la época invernal el oleaje dominante que arriba a la bahía proviene del oeste-noroeste, aproximándose a la barra del estero con dirección oeste franco, lo que en combinación con la orientación de la barra induce un transporte litoral de sedimento en dirección noreste, hacia la boca del estero. Este resultado contradice la hipótesis de que durante el invierno la dirección del transporte litoral es hacia el sur y permite establecer que a lo largo de un año típico la dirección dominante del transporte litoral de sedimento en la barra del estero es hacia el noreste. El hecho de que la boca del estero no se haya cerrado debe ser atribuible a otros procesos físicos, como por ejemplo a aportes pluviales extraordinarios durante la época de lluvias o posibles desigualdades entre las velocidades del flujo y reflujo de la marea al estero. Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas 2008-03-11 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/1270 10.7773/cm.v34i1.1270 Ciencias Marinas; Vol. 34 No. 1 (2008); 69-76 Ciencias Marinas; Vol. 34 Núm. 1 (2008); 69-76 2395-9053 0185-3880 eng https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/1270/1857 ['Redalyc'] redalyc_48034106 Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico ['Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico', 'O Delgado-González', 'Ciencias de la Tierra', 'refracción', 'oleaje invernal', 'Estero de Punta Banda', 'transporte de sedimento', 'Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico O Delgado-González L Galindo-Bect CR Torres-Navarrete R Cano-Cetina A Martínez-Díaz-de-León R Lizárraga-Arciniega R Blanco-Betancourt E Gil-Silva Ciencias de la Tierra refracción oleaje invernal Estero de Punta Banda transporte de sedimento Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separatedfrom the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of420 m, which decreased the width of the estuary mouth by more than 400 m. Despite the bar\x92s rapid growth it has beensuggested that the estuary mouth remains open because in spring, summer and autumn the longshore sand transport isnortheastward, but during winter the longshore sand transport should be toward the southwest, away from the mouth,establishing a balance between the amount of sediment transported both ways. In this study we analyze wave data acquired fromNovember 2004 to March 2005 on the bay side of the sandbar, and for the first time provide the magnitude and direction of thelongshore sand transport during winter. The results show that during this season the dominant waves approach the bay from thewest-northwest and the sandbar from the west, inducing a net longshore sand transport of 817 m3 day\x961 to the northeast. Thisresult contradicts the hypothesis of a longshore sand transport balance, and shows that throughout a typical year the netlongshore sand transport is to the northeast. The fact that the estuary mouth has not closed up should be attributed to othercauses, such as extraordinary amounts of rain during the rainy season or inequalities between the ebb and flood tidal currentvelocities to the estuary. 2008 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48034106 es http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.34'] ['O Delgado-González'] ['O Delgado-González'] ['Artículo científico'] ['2008'] ['Universidad Autónoma de Baja California'] ['es'] ['Ciencias de la Tierra', 'refracción', 'oleaje invernal', 'Estero de Punta Banda', 'transporte de sedimento'] ['https://www.redalyc.org/articulo.oa?id=48034106'] ['Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico O Delgado-González L Galindo-Bect CR Torres-Navarrete R Cano-Cetina A Martínez-Díaz-de-León R Lizárraga-Arciniega R Blanco-Betancourt E Gil-Silva Ciencias de la Tierra refracción oleaje invernal Estero de Punta Banda transporte de sedimento Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separatedfrom the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of420 m, which decreased the width of the estuary mouth by more than 400 m. Despite the bar\x92s rapid growth it has beensuggested that the estuary mouth remains open because in spring, summer and autumn the longshore sand transport isnortheastward, but during winter the longshore sand transport should be toward the southwest, away from the mouth,establishing a balance between the amount of sediment transported both ways. In this study we analyze wave data acquired fromNovember 2004 to March 2005 on the bay side of the sandbar, and for the first time provide the magnitude and direction of thelongshore sand transport during winter. The results show that during this season the dominant waves approach the bay from thewest-northwest and the sandbar from the west, inducing a net longshore sand transport of 817 m3 day\x961 to the northeast. Thisresult contradicts the hypothesis of a longshore sand transport balance, and shows that throughout a typical year the netlongshore sand transport is to the northeast. The fact that the estuary mouth has not closed up should be attributed to othercauses, such as extraordinary amounts of rain during the rainy season or inequalities between the ebb and flood tidal currentvelocities to the estuary. 2008 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48034106 es http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.34'] |
| spellingShingle | Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico O Delgado-González Ciencias de la Tierra refracción oleaje invernal Estero de Punta Banda transporte de sedimento Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico O Delgado-González L Galindo-Bect CR Torres-Navarrete R Cano-Cetina A Martínez-Díaz-de-León R Lizárraga-Arciniega R Blanco-Betancourt E Gil-Silva Ciencias de la Tierra refracción oleaje invernal Estero de Punta Banda transporte de sedimento Punta Banda Estuary, located within Todos Santos Bay, on the northwest coast of the Baja California Peninsula, is separatedfrom the bay by a single sandbar, approximately 8 km long. From 1972 to 2003 this sandbar showed a longitudinal net growth of420 m, which decreased the width of the estuary mouth by more than 400 m. Despite the bars rapid growth it has beensuggested that the estuary mouth remains open because in spring, summer and autumn the longshore sand transport isnortheastward, but during winter the longshore sand transport should be toward the southwest, away from the mouth,establishing a balance between the amount of sediment transported both ways. In this study we analyze wave data acquired fromNovember 2004 to March 2005 on the bay side of the sandbar, and for the first time provide the magnitude and direction of thelongshore sand transport during winter. The results show that during this season the dominant waves approach the bay from thewest-northwest and the sandbar from the west, inducing a net longshore sand transport of 817 m3 day1 to the northeast. Thisresult contradicts the hypothesis of a longshore sand transport balance, and shows that throughout a typical year the netlongshore sand transport is to the northeast. The fact that the estuary mouth has not closed up should be attributed to othercauses, such as extraordinary amounts of rain during the rainy season or inequalities between the ebb and flood tidal currentvelocities to the estuary. 2008 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48034106 es http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.34 |
| title | Influence of winter waves on the longitudinal growth of the Punta Banda Estuary sandbar, Todos Santos Bay, Baja California, Mexico |
| title_alt | Influencia del oleaje invernal en el crecimiento longitudinal de la barra del Estero de Punta Banda, Bahía de Todos Santos, Baja California, México |
| topic | Ciencias de la Tierra refracción oleaje invernal Estero de Punta Banda transporte de sedimento |
| topic_facet | winter waves refraction sediment transport Punta Banda Estuary oleaje invernal refracción transporte de sedimento Estero de Punta Banda |
| url | https://www.redalyc.org/articulo.oa?id=48034106 https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/1270 |