Tue11Oct20166:00 pmLuca Bakery and Cafe, 1120-1122 North Lamar Blvd Oxford, Mississippi
Oxford Science Cafe
Dr. Arne – R. Diercks,
School of Ocean Science and Technology
University of Southern Mississippi
Perpetual Snow - Sedimentation in the Deep Sea
Sedimentation in the deep ocean is a slow and steady supply of material to the deep sea via small particles. Once glued together by organic matrices into larger aggregates, they become a main source of energy, food and sediments in the deep sea and the seafloor. Sedimentation rates in the deep ocean are small, ranging from a fraction to a few millimeters per year in the abyssal ocean. Anthropogenic impacts can alter the sedimentation even in remote areas. Following the Deep Water Horizon Oil Spill in the northern Gulf of Mexico, anthropogenic oil marine aggregates that had formed in the water column near the wellhead, were deposited as an unprecedented large amount of material on the seafloor within a few months following the spill.