Figure G11. Idealized mound cross sections showing maximum and average vertical erosion and areas over which erosion volume is computed

Figure G11. Idealized mound cross sections showing maximum and average vertical erosion and areas

over which erosion volume is computed

if in fact, this more complicated method of computing annual and cumulative

erosion estimates provides significantly different answers than the simpler

methods.

Episodic erosion. Episodic event erosion was individually described for

tropical and extratropical events in the prior sections. For tropical events, the

curves and tables represent the vertical erosion associated with individual hurri-

canes. For example, a 100-year erosion value is the erosion associated with a

single severe event with a return period of 100 years. However, the curves and

tables presented for the extratropical events represent erosion due to multiple

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Appendix G Procedures for Conducting Frequency-of-Erosion Studies