Analysis of the spatiotemporal variability of upwelling system of Guajira in the space and frequency domain, using MTM-SVD (Multi Taper Method Singular Value Decomposition)
DOI:
https://doi.org/10.26640/22159045.280Keywords:
upwelling, La Guajira, spatial domain, frequency domainAbstract
Satellite data of chlorophyll-a, wind field and sea surface temperature for a period of 12 years, on the area of influence of upwelling system of the La Guajira peninsula, are used for analysis by MTM-SVD, in order to get an overview of the main frequency variability, determine the fraction of variance explained for each of these frequencies, and determine their patterns of oscillation, both stationary or propagation. It is that the annual and semiannual signal dominate the system behavior outcrop on the La Guajira peninsula, significantly. The annual signal is associated with fluctuations in the efforts of the trade winds, while the semiannual signal due to the increase in the intensity of the winds that occurs as a result of latitudinal decrease in low Azores amending isobaric field region, allowing the genesis of "San Juan" summer. Relations between the annual performance of the wind field and the occurrence of El Niño and La Niña established, showing consistency between the system response and atmospheric disturbances that are generated as a result of the intervention of ENSO.Downloads
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Progress In Oceanography 83, 80–96. doi:10.1016/j.pocean.2009.07.032
[3] Páramo, J., Correa, M., et al. “Evidencias de desacople físico-biológico en el
sistema de surgencia en la Guajira, Caribe Colombiano”, Revista de Biología Marina
y Oceanografía, vol. 46 No. 3, 2011, pp.422.
[4] Andrade, C. y Barton, E. “The Guajira Upwlling System”, Continental Shelf
Research, vol. 25, 2005, 1005 pp.
[5] Bernal, G., Poveda, G., et al. “Patrones de Variabilidad de las Temperaturas
Superficiales del Mar en la costa Caribe colombiana”. Revista de la Academía
Colombiana de Ciencias Exactas, vol. 30, 2006, 206 pp.
[6] Rueda-Roa, D. y Muller-Karger, F. “The southern Caribbean upwelling system:
Sea surface temperature, wind forcing and chlorophyll concentration patterns”, DeepSea Research I, 2013, 110 pp.
[7] Correa, M. y Hormazabal S. “MultiTaper Method-Singular Value Decomposition
(MTM-SVD): variabilidad espaciofrecuencia de las fluctuaciones del nivel del mar en el
Pacífico suroriental”, LatinAmerican Journal of Aquatic Research, vol. 40, 2012.
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Published
2015-12-07
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RESEARCH ARTICLE
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How to Cite
Analysis of the spatiotemporal variability of upwelling system of Guajira in the space and frequency domain, using MTM-SVD (Multi Taper Method Singular Value Decomposition). (2015). CIOH Scientific Bulletin, 33, 87-106. https://doi.org/10.26640/22159045.280
