Fig. 2. Beach-replenishment model

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Figure 2. Results from a coupled beach-economics model. Plots (Ai) and (Bi) show beach width for a plan-view series of coastal towns (vertical axis) over time (horizontal axis). Hot colors indicate a wide beach, and cool colors a narrow beach. When all towns replenish their beaches in unison (Ai), the system is stable, and all towns share the same optimal recurrence interval. When towns replenish out of sync (Bi), the system destabilizes such that no town can establish a recurrence interval for replenishment that optimizes their net benefits. Figure after Lazarus et al. (2011).

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Eli Lazarus
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