Longshore Sediment Transport During Storms


Investigator

Herman C. Miller, Andrew Salkield

Funding Source

Storm Transport Ocean Rate Measurements Work Unit,

US Army Corps of Engineers, Coastal Research and Development Program

Objective

This investigation seeks to quantify total longshore sediment transport during storms. Participation in DUCK94 is expected to provide the opportunity to refine the measurement scheme, evaluate the influence of the pier, and optimize the calibration requirements of the sensors. While the focus will be on preparing for SandyDuck, providing measurements of the volume of sediment moving along shore is the desired objective.

Approach

The pier-based Sensor Insertion System (SIS) will be operated throughout the experiment. The SIS is a diverless deployment system that is designed to rapidly install, remove, and relocate sensors along the entire pier length. The SIS can operate in storms with Hmo = 3 m, currents = 2 m/s, and 20 m/s wind speeds.

By DUCK94, the SIS will be instrumented with ten OBS-3 sediment concentration monitors, five 512 electromagnetic current meters, a pressure wave gage, underwater video camera, and two streamer trap sediment samplers. A PC-based data acquisition system will be used to collect the data. It is anticipated that 8 to 16 unused channels will be available for future expansion or co-investigations.

The approach will be to:

FRF staff members Eugene W. Bichner, Brian L. Scarborough, and Charles R. Townsend will assist with the measurements.

For a list of addresses of the investigators involved in Duck 94 click here.