An Overview of the Poleward Undercurrent and Upwelling along the Chilean Coast

Abstract

The Chilean coast, with its long meridional coastline and consistent equatorward wind stress, is well recognized as one of the most biologically productive areas of the global ocean. This highly productive region is part of the Southeastern Pacific upwelling system extending from 5°S off Peru to 40°S off southern Chile. Exporting more fish meal than any other country in the world, Chile has long relied on the national fishing industry as a significant factor in its economy. Yet, in spite of its obvious importance, the waters south of 15°S are remarkably little known. Research efforts, either by Chilean investigators or by foreign expeditions have been, for the most part, isolated and modest.