Measured and Predicted Burial of Cylinders During the Indian Rocks Beach Experiment
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS MARINE GEOSCIENCES DIV
Pagination or Media Count:
Burial of instrumented mine-like cylinders as a result of wave-induced scour was measured during experiments conducted in shallow water 15-16 m with fine-sand 133-um and coarse-sand 566-um sediments off Indian Rocks Beach IRB, FL. Scour pits developed around the instrumented cylinders in the fine-sand site when significant wave heights exceeded 2 m, causing the cylinders to pitch, then roll into the developing scour pits, often changing heading to align parallel with the wave crest. Final cylinder burial was nearly 40 cm about 70-80 mine diameter relative to the sediment-water interface, but only 20-50 relative to surface area covered. The difference was caused by the lack of complete infilling of scour pits. Little development of scour pits and burial was noted on the coarse-sand site and the cylinders buried to only 20 -40 of the cylinder diameter below the sediment surface. Burial results, although variable, are in general agreement with the wave-induced scour model developed by Trembanis et al. 2007 for the fine sand, but not for the coarse sand where measured burial was much less than predicted.
- Physical and Dynamic Oceanography
- Ammunition and Explosives