Caracterización de las condiciones oceanográficas en el Golfo de Nicoya, Costa Rica
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Fecha
2019
Autores
Cambronero-Solano, Sergio
Vargas-Hernández, José Mauro
Ballestero-Sakson, Daniel
Tisseaux-Navarro, Alexandre
Salazar-Ceciliano, Juan Pablo
Benavides-Morera, Rosario
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Universidad Nacional (Costa Rica)
Resumen
Resumen. El Golfo de Nicoya (GN) es uno de los estuarios más grandes de América Central. Este cuerpo de agua presenta una dinámica de circulación compleja y representa un área de alta importancia pesquera y comercial. El objetivo de este estudio fue caracterizar la variabilidad intra-anual de parámetros oceanográficos en la región interna del GN, Costa Rica. Se realizaron mediciones de caudal y profundidad utilizando correntímetros acústicos. Se obtuvieron perfiles verticales de salinidad, temperatura, clorofila y oxígeno en estaciones a lo largo de transectos perpendiculares a la costa, tanto en marea de flujo como de reflujo. Los resultados muestran un dominio del forzamiento mareal en la circulación del GN. Se demostró que la intensidad del flujo está determinada por la batimetría, con magnitudes mayores en el flanco este del golfo. Se observó una mayor proporción de agua dulce en el flanco oeste. Estos resultados serán insumo para la calibración y validación de modelos hidrodinámicos del GN.
Abstract. The Golfo de Nicoya (GN) is one of the largest estuaries in Central America. This gulf shows a complex circulation dynamic and represents an important site in terms of fishing and commerce. The objective of this study was to characterize the intra-anual variability of oceanographic parameters in the inner section of GN, Costa Rica. Sampling of discharges and depth were taken with acoustic doppler current profilers. Vertical profiles of salinity, temperature, chlorophyll and oxygen were taken on fixed stations along transects perpendicular to the coast, on ebb and flood tide. The results show a dominance of the tidal component in the circulation dymanic. It was demonstrated that flow intensity is determined by the batyhmethry, with higher magnitudes on the east side of the GN. Higher proportion of freshwater was observed on the west side. These results represent an input to calibrate and validate novel hydrodynamic models of GN.
Abstract. The Golfo de Nicoya (GN) is one of the largest estuaries in Central America. This gulf shows a complex circulation dynamic and represents an important site in terms of fishing and commerce. The objective of this study was to characterize the intra-anual variability of oceanographic parameters in the inner section of GN, Costa Rica. Sampling of discharges and depth were taken with acoustic doppler current profilers. Vertical profiles of salinity, temperature, chlorophyll and oxygen were taken on fixed stations along transects perpendicular to the coast, on ebb and flood tide. The results show a dominance of the tidal component in the circulation dymanic. It was demonstrated that flow intensity is determined by the batyhmethry, with higher magnitudes on the east side of the GN. Higher proportion of freshwater was observed on the west side. These results represent an input to calibrate and validate novel hydrodynamic models of GN.
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Palabras clave
GOLFO DE NICOYA (COSTA RICA), HIDROGRAFÍA, HIDRODINÁMICA, OCEANOGRAFÍA, GULF OF NICOYA (COSTA RICA), HYDROGRAPHY, HYDRODYNAMICS, OCEANOGRAPHY, ESTUARIOS