Mesoscale cycles in the series of environmental indices related to the sardine fishery in the Gulf of California

Cyclical fluctuations in mean sea level and seasurface temperature recorded at northwestern Mexican shore stations are compared to Gulf of California sardine fishery data. Sardine abundances correspond to 2-year and 5-year sea-level and sea-surface temperature cycles. RESUMEN Fluctuaciones ciclicas en el nivel promedio del mar y la temperatura superficial de estaciones costeras del noroeste de Mkxico son comparados con datos de pesqueria de la sardina del Golfo de California. Abundancias pesqueras corresponden a ciclos de 2 y 5 aiios del nivel del mar y de la temperatura.