Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific
Catch data of the yellowfin tuna (YFT) fishery were used to study the relationship between the seasonal and spatial variations of YFT with or without the presence of mesoscale structures at the entrance to the Gulf of California (19º–24º N, 104º–112º W). The YFT catches were distributed mainly over...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2005-03-01
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| Series: | Ciencias Marinas |
| Subjects: | |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/33 |
| _version_ | 1797279406295613440 |
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| author | Ernesto Torres-Orozco Armando Trasviña Arturo Muhlia-Melo Sofía Ortega-García |
| author_facet | Ernesto Torres-Orozco Armando Trasviña Arturo Muhlia-Melo Sofía Ortega-García |
| author_sort | Ernesto Torres-Orozco |
| collection | DOAJ |
| description |
Catch data of the yellowfin tuna (YFT) fishery were used to study the relationship between the seasonal and spatial variations of YFT with or without the presence of mesoscale structures at the entrance to the Gulf of California (19º–24º N, 104º–112º W). The YFT catches were distributed mainly over the continental shelf and around islands and seamounts. High concentration sets of YFT occurred throughout the year around the Marías islands and Cabo Corrientes, particularly in March and June. A warm (>28ºC) coastal jet with a width of 1.5 Rossby radius (~20.6 km) was observed off Cabo Corrientes during February and April, covering all the continental shelf off Cabo Corrientes. The jet moved at an average speed of 0.31 m s–1 and extended northwards to the Roca Corbetera seamount. The interaction with cooler water generated a frontal zone around which the YFT catches were concentrated. In contrast, during March the wind field was more favorable for the development of coastal upwelling off Cabo Corrientes. We observed an upwelling region with sea surface temperature of 18ºC and an offshore width of about a 3.7 Rossby radius of cold water that covered some 2600 km2. The YFT catches occurred in warmer water north of the upwelling zone.
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| first_indexed | 2024-03-07T16:25:55Z |
| format | Article |
| id | doaj.art-a227e8a5f89a48218a25668c2df88db4 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:25:55Z |
| publishDate | 2005-03-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-a227e8a5f89a48218a25668c2df88db42024-03-03T18:36:05ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532005-03-0131410.7773/cm.v31i4.33Mesoscale dynamics and yellowfin tuna catches in the Mexican PacificErnesto Torres-Orozco0Armando Trasviña1Arturo Muhlia-Melo2Sofía Ortega-García3Centro de Investigaciones Biológicas del NoroesteCentro de Investigación Científica y de Educación Superior de EnsenadaCentro de Investigaciones Biológicas del NoroesteCentro Interdisciplinario de Ciencias Marinas-IPN Catch data of the yellowfin tuna (YFT) fishery were used to study the relationship between the seasonal and spatial variations of YFT with or without the presence of mesoscale structures at the entrance to the Gulf of California (19º–24º N, 104º–112º W). The YFT catches were distributed mainly over the continental shelf and around islands and seamounts. High concentration sets of YFT occurred throughout the year around the Marías islands and Cabo Corrientes, particularly in March and June. A warm (>28ºC) coastal jet with a width of 1.5 Rossby radius (~20.6 km) was observed off Cabo Corrientes during February and April, covering all the continental shelf off Cabo Corrientes. The jet moved at an average speed of 0.31 m s–1 and extended northwards to the Roca Corbetera seamount. The interaction with cooler water generated a frontal zone around which the YFT catches were concentrated. In contrast, during March the wind field was more favorable for the development of coastal upwelling off Cabo Corrientes. We observed an upwelling region with sea surface temperature of 18ºC and an offshore width of about a 3.7 Rossby radius of cold water that covered some 2600 km2. The YFT catches occurred in warmer water north of the upwelling zone. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/33yellowfin tunaMexican Pacificmesoscale processesupwelling |
| spellingShingle | Ernesto Torres-Orozco Armando Trasviña Arturo Muhlia-Melo Sofía Ortega-García Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific Ciencias Marinas yellowfin tuna Mexican Pacific mesoscale processes upwelling |
| title | Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific |
| title_full | Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific |
| title_fullStr | Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific |
| title_full_unstemmed | Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific |
| title_short | Mesoscale dynamics and yellowfin tuna catches in the Mexican Pacific |
| title_sort | mesoscale dynamics and yellowfin tuna catches in the mexican pacific |
| topic | yellowfin tuna Mexican Pacific mesoscale processes upwelling |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/33 |
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