On some coasts, like the Pacificcoast of South America, upwelling isfairly steady and takes place over a largegeographic area. On other coasts, likethat of California, upwelling tends tooccur as localized, short-lived events(Fig. 15.32). If the wind is strong for afew days, strong upwelling occurs, only to fade away when the wind dies andspring up somewhere else. Even on thePacific coast of South America, up- welling is usually most intense in small,localized patches