Nearshore dynamics of artificial sand and oil agglomerates

Marine Pollution Bulletin
By: , and 



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.

Additional publication details

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
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