Abstract
Albacore tuna catch data from the summer of 1981 are displayed on concurrent satellite images of sea surface temperature and phytoplankton pigment concentration, from the NOAA-7 Advanced Very High Resolution Radiometer (AVHRR) and the Nimbus-7 Coastal Zone Color Scanner (CZCS), respectively. During 3 week-long periods off California, intense fishing activity and larger catches, indicating aggregations of albacore, were located within pockets of warm, blue oceanic water intruding into the boundary between oceanic and cooler greenish coastal waters. A relatively productive oceanic region, defined by a color front visible in a CZCS image, was the site of albacore aggregation in waters several hundred miles offshore during the first 2 weeks of September 1981.
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