D — Continued 



Dredging 4rl29, 5-27, 6-54 



discharge line 5-28 



floating 5-28, 5-51, 6-54, 6-59 



land-based 5-27, 5-30, 6-54 



Drift, Uttoral 1-10, A-20 



Drum Inlet, North Carolina 4-124, 4-125, 4-149 



Dunes 1-2, 1-4, 1-14, 4-115, 4-124, 5-21, 6-36, 



A-11, A-50 



construction-sand fencing 6-37 



profile 6-40, 6-41 



construction-vegetation 6-43 



profUe 6-47, 6-48, 6-49, 6-50, 6-53 



effects of leveling 1-14 



Earth forces 7-108, 8-100, 8-102 



active 7-208 



hydrostatic 6-6, 7-213, 8-100 



passive 7-209 



submerged materials 7-212 



East Pass, Florida 6-59, 6-73 



Eddy shedding 



forces 7-95 



El Segundo, California 4-90 



Energy (wave) (see also Wave energy) 2-27 



related to wavelength and wave height C-34 



specific 2-27 



total, oscillatory wave 2-27 



Energy coefficient A-12 



Fall velocity (sediment) 4-81 



Fans (refraction) 2-73, 7-13 



Feeder beach A-13 



location 5-20 



Femandina Beach, Florida 6-5, 6-83 



Fetch (or Fetch area) 1-7, 3-27, 3-34, A-13 



delineation 3-27 



effective 3-29, 8-26, 8-27 



minimum length 3-38, 3-65 



moving 3-40, 3-54 



length 3-29, 3-30 



width 3-29, 3-30 



Filter blanket (rubble-mound structure) 7-200 



Finite Amplitude Theory (see also Wave, Trochoidal 



Theory ; Wave, Stokes Theory) 2-3, 2-6, 2-7, 2-36, 



7-70, 7-71, 7-72 



Fire Island Inlet, New York 4-149, 6-59, 6-70 



First-Order Wave Theory (see Wave, Airy Theory) 



Fixed bypass plant 5-27, 6-54 



Flexible structures 7-2 



Floating bypass plant 5-28, 6-54, 6-59 



Flourescent tracer 4-151 



Forces 



active earth 7-208 



earth (see Earth forces) 



eddy shedding 7-95 



hydrostaHc 6-6, 7-213, 8-100 



ice 7-206 



impact 7-204 



lift 7-95 



passive earth 7-209 



Dunes— Continued 



foredunes (see Foredunes) 



formation 4-5, 6-37 



migration 4-129, 4-130, 5-21, 5-22 



natural, protective 1-2, 1-4, 1-14, 4-113, 4-115, 



4-124, 5-21 



profUe . .4-112, 6-40, 6-41, 6-47, 6-48, 6-49, 6-50, 6-53 



stabilization 5-21, 5-22, 6-37, 6-43 



trapping capacity 4-115, 4-124, 5-21, 6-51 



Duration 



wind (over fetch) 3-34 



Durban, Natal, South Africa 6-54 



Dutch Harbor, Unalaska Island, Alaska 3-73 



E-- 



Energy density (wave) 2-27 



Engineering (coastal) 1-1, 4-52, 5-1 



Environmental considerations 5-57 



Erosion (see also Longshore transport) 



beach 1-5, 1-11, 4-70, 4-115, 4-121, 5-21 



cUffs 4-121 



beach fiU project 6-28 



structure-caused 6-59, 6-61, 6-63 



Erosion rate (beach) 4-11, 5-8 



Estuary A-12 



European beach grass 6-43 



Evanston, Illinois 4-90, 6-79 



Extratropical storm 3-83 



Extreme events (see also Storm; Tsunami) 4-37 



F---- 



Forces— Continued 



submerged materials 6-6 



submerged earthfills 7-212 



transverse 7-95 



velocity 7-203 



Forces (wave) (see Wave forces) 



Forecasting (see also Wave prediction; Hindcasting) . . 3-1 



deepwater areas 3-34, 3-35, 3-57 



hurricane 3-57 



P-N-J Method 3-34 



shallow water areas 3-42, 8-26, 8-30 



S-M-B Method 3-34 



Wave Spectra Method 3-11, 3-13 



Foredunes (see also Dunes) 4-5, 4-113, 6-36, A-13 



destruction 6-37 



formation 4-5, 6-36 



trapping capacity 4-115 



Forerunner 3-85, A-13 



Foreshore 1-3, 4-56, A-13 



sand sizes 4-85 



slope 4-85 



Fort Pierce, Florida 6-16 



Frequency (wave) 2-4, 2-9 



angular 2-9, 3-33 



Friction 



bottom friction . . . 2-66, 3-42, 3-46, 3-62, 3-67, 3-103, 



4-28 



bottom friction coefficient (K) 3-103, 3-115 



bottom friction factor (ff). 3-46, 3-64, 3-67, 3-103, 448 



friction coefficient (soU) (jU) 7-212 



friction factor (Kf) 2-66, 3-64, 3-67, 4-28 



D-4 



