. Development of a portable sand trap for use in the nearshore. Littoral drift; Oceanographic instruments; Sedimentation and deposition. DIST FROM SEABED TO MID-STREAMER (cm). FLUX (g/cm2/min) SHOREWARD TRAP SEAWARD TRAP Figure 57. Run 37-2, SUPERDUCK consistency test (9-21-86) depended on trap location. The majority of the DUCK85 consistency runs were conducted in the feeder of a rip current where the flow was steady and strong. 119. The vertical distributions of sand flux measured with the SUPERDUCK nozzle varied more between the shoreward and seaward traps than was observed with
. Development of a portable sand trap for use in the nearshore. Littoral drift; Oceanographic instruments; Sedimentation and deposition. DIST FROM SEABED TO MID-STREAMER (cm). FLUX (g/cm2/min) SHOREWARD TRAP SEAWARD TRAP Figure 57. Run 37-2, SUPERDUCK consistency test (9-21-86) depended on trap location. The majority of the DUCK85 consistency runs were conducted in the feeder of a rip current where the flow was steady and strong. 119. The vertical distributions of sand flux measured with the SUPERDUCK nozzle varied more between the shoreward and seaward traps than was observed with the DUCK85 nozzle. However, wave conditions were different, with clean swell occurring during DUCK85 and more choppy wind waves during SUPERDUCK. Figure 55 shows the run with poorest agreement between seaward and shoreward traps measured during a very low transport condition. 120. Integration of the measured fluxes through the water column gives the total transport rate density for that trap. Table 11 summarizes the total transport rate density data for the 17 consistency tests conducted both at DUCK85 and SUPERDUCK field data collection programs. Fluxes were adjusted using the values of sand-trapping efficiency determined in Chapter 4. The consistency ratio gives a measure of consistency between the shoreward and seaward traps. If it is assumed that the transport rate is uniform over a distance of approximately 2 to 3 m in a plane normal to the flow, then results 91. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rosati, Julie Dean; Kraus, Nicholas C; U. S. Army Engineer Waterways Experiment Station; Coastal Engineering Research Center (U. S. ); United States. Army. Corps of Engineers. [Vicksburg, Miss. : U. S. Army Engineer Waterways Experiment Station ; Springfield, Va. : available from National Technic
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