A continental shelf upwelling event off Vancouver Island as revealed by satellite infrared imagery

摘要: A series of nine relatively cloud-free infrared satellite images, the coastal ocean off Vancouver Island, reveals evolution sea-surface temperature patterns during a 16-day period upwelling favorable winds in summer 1980. Early event, cold water north was restricted to narrow band, while south surface extended out continental shelf break. This southern feature is believed be an expression semipermanent, cyclonic eddy (Freeland and Denman, 1982). As continued, boundary propagated offshore at about 10 km/day eventually passing beyond Short-lived (2-3 days) meanders were observed northern front with length scales consistent variations local bottom topography coastline irregularities. After wind reduction, coldest band parted coast offshore.