Saving Cape Hatteras Lighthouse from the Sea Options and Policy Implications (1988) / Chapter Skim
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Appendix B
Appendix B
Pages 111-116
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From page 111... ...
a year. · Other determinations of long-term retreat rates include data from the post- 1930 period.
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From page 112... ...
method to predict shoreline retreat is based on assumed maintenance of an equilibrium shoreface profile during sea-level rise. This requires that sand be removed from the eroding beach and shoreface regions and deposited downdrift or on the offshore continental shelf below the seaward limb of the equilibrium profile (Figure B1~.
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From page 113... ...
Additional Trend Analyses · _ co c~ _ c~ ~ _ _ ~ 1 _ U)
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From page 114... ...
is designed to consider a realistic topographic profile explicitly to apply the Bruun rule correctly to beaches that are part of a larger barrier- island system. For the North Carolina coast, the generalized Bruun rule predicts a recession rate about 25% higher than the original Bruun rule (Pilkey and Davis, 1987~.
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From page 115... ...
These shoreline retreat values are much closer to those in Table 2 than the ones obtained by trend analysis of the natural erosion data, although whether the shoreline is armored is not stipulated in use of the Bruun rule. Retreat rates at Cape Hatteras computed by Pilkey and Davis ( 1987)
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From page 116... ...
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