Vortex Lattice UXO Mobility Model for Reef-Type Range Environments
Final rept. May-Dec 2010, Jun-Aug 2011
SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB
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Reef platform micro-bathymetry was constructed from spatial Fourier transforms of LIDAR data from the reef platform at PMRF, Kauai as a geomorphic proxy of other island reef systems. A discrete arrangement of these awa control cells allowed numerically stable computations of erosion and transport of large UXO fields across reefs that surround an entire island. We constructed probability density functions of migration and burial magnitudes predicted by the awa cell model, and compared them with probability density functions assembled from observed outcomes of the experiment. We also computed predictive skill factors from the mean squared error between the awa cell prediction and measured outcomes for migration distance, and burial depth. After validating software revisions using the previous ESTCP funded field data at PMRF, we tested and proved the hypothesis through long-term, extreme-event simulations at Vieques Island that the UXO eventually concentrate in the reef awa channels where the UXO are amenable to recovery by conventional sand dredging methods.
- Computer Programming and Software