Researchers described in a recent study a surrogate-based technique to quantify the uncertainty in forecasting the oceanic circulation.
Scientists conducted laboratory experiments to examine the influence of moon jellyfish (Aurelia aurita) on crude oil aggregation and degradation. The researchers found that jellyfish swimming in a dispersed oil solution produced copious amounts of mucus which formed aggregates containing 26 times more oil than the surrounding water.
Scientists observed in laboratory experiments the formation of extracellular polymeric substances (EPS, a natural microorganism excretion) when phytoplankton and their associated bacteria were exposed to Corexit dispersant.
Scientists assessed the behavior of a Florida river plume to determine how it might influence the transport and dispersion of surface oil near coastal regions. The researchers found that the near-surface measurements of dissipation at the front’s bounding edge were four orders of magnitude larger than the environment beneath.
Scientists conducted a meta-analysis on marsh periwinkle snails using data spanning five years to investigate how the oil spill affected them over time. The researchers found that snails from heavily-oiled sites exhibited decreased density and shell length.
Researchers measured polycyclic aromatic hydrocarbon (PAH) concentrations in water collected near the Deepwater Horizon site to understand how sinking particles, such as marine snow, influence the residence time of PAHs in the upper ocean.
Pennsylvania State University scientists analyzed images of impacted and non-impacted deep sea corals to characterize their symbiotic relationship with brittle stars and determine if brittle stars influenced coral recovery from the Deepwater Horizon spill.
Scientists developed a new model to predict how much oil from a spill might bind to sediments or organic matter in the water column. The model, A-DROP, introduces a formula that accounts for oil stabilization by particles, particle hydrophobicity, and oil-particle size ratio.
Scientists analyzed weathered and fresh Macondo oil to learn about oil products resulting from microbial degradation and photochemical reactions. They observed that 48 months after the Deepwater Horizon spill, less than 1 percent of oil remained in marsh sediments collected from heavily-impacted sites; however, it was still 400 times greater than sites with moderate-to-no observed oiling.