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Figure 6. ENSO signal in the Gulf of Alaska from the simulation. The ocean circulation in the Gulf of Alaska following the 1982-83 El Niño in the tropical Pacific Ocean is shown on the left-hand side. The situation following the 1988-89 El Viejo event (La Niña) is displayed to the right. Both depictions show the situation on March 2 (1983 and 1989). The colors indicate the thickness anomaly of the two upper layers relative to the seasonal mean. Yellow and red colors show regions with anomalously deep layers, blue and purple colors correspond anomalously shallow layers, and green colors indicate values close to the mean.