Nearshore dynamics of artificial sand and oil agglomerates
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Abstract
Weathered oil can mix with sediment to form heavier-than-water sand and oil agglomerates (SOAs) that can cause beach re-oiling for years after a spill. Few studies have focused on the physical dynamics of SOAs. In this study, artificial SOAs (aSOAs) were created and deployed in the nearshore, and shear stress-based mobility formulations were assessed to predict SOA response. Prediction sensitivity to uncertainty in hydrodynamic conditions and shear stress parameterizations were explored. Critical stress estimates accounting for large particle exposure in a mixed bed gave the best predictions of mobility under shoaling and breaking waves. In the surf zone, the 10-cm aSOA was immobile and began to bury in the seafloor while smaller size classes dispersed alongshore. aSOAs up to 5 cm in diameter were frequently mobilized in the swash zone. The uncertainty in predicting aSOA dynamics reflects a broader uncertainty in applying mobility and transport formulations to cm-sized particles.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Nearshore dynamics of artificial sand and oil agglomerates |
| Series title | Marine Pollution Bulletin |
| DOI | 10.1016/j.marpolbul.2015.04.049 |
| Volume | 96 |
| Issue | 1-2 |
| Year Published | 2015 |
| Language | English |
| Publisher | International Conference on the Environmental Management of Enclosed Coastal Seas |
| Publisher location | London, England |
| Contributing office(s) | St. Petersburg Coastal and Marine Science Center |
| Description | 12 p. |
| First page | 344 |
| Last page | 355 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |