Fig. 6: ESTELA analysis of Pacific wave energy sources associated with EOF mode 1 shoreline change and the Niño3.4 index.
From: Interannual wave-driven shoreline change on the California coast

El Niño years are shaded gray. a, b Wave generation anomaly regions associated with the shoreline EOF mode 1 and c, d ENSO Niño3.4 index. e Correlations between mode 1 shoreline change and annual mean (blue, r2 = 0.21) and mid-winter (red, r2 = 0.32) Niño3.4 index are relatively low. In contrast, green shading highlights 2010–2016 with higher correlation during robust statewide beach recovery (Fig. 2c).