Continental-Margin Processes Recorded in Shelf and Canyon Sediments Documenting Fine-Sediment Import and Export for Two Contrasting Mesotidal Flats

摘要

The ultimate goal of the work in the Gulf of Lions was to understand the relationships between sediment transport and accumulation in shelf and slope environments, and how they lead to the formation and preservation of sedimentary strata in the seabed. The goal of the tidal-flats project during the past year was to initiate pilot studies in tidal mud flats (Willapa Bay) and sand flats (Skagit Bay). The objectives of research during FY08 were to: 1) submit and publish papers about: Rhone flood deposits; off-shelf transport into Cap Creus and Lacaze-Duthiers canyons; and an integrated evaluation of the Gulf of Lions sediment dispersal system; 2) collect samples and data regarding sedimentation in Willapa and Skagit Bays, and use these to collaboratively design more complex field/lab studies for FY09; 3) provide logistical support for the community of ONR-funded scientists working in Willapa and Skagit Bays.