Coastal Benthic Exchange Dynamics (CBED)
Kilo Nalu - Benthic Boundary Layer Geochemistry and Physics at the Kilo Nalu Observatory: Eugene Pawlak (project leader), Francis Sansone, Eric DeCarlo, Margaret McManus (all University of Hawaii) and Timothy Stanton (Naval Postgraduate School)
iBED - integrated Benthic Exchange Dynamics: Further Development of the Eddy Correlation Technique: Peter Berg (project leader, University of Virginia), Markus Huettel (Florida State University), Hans Roey and Volker Meyer (MPI)
MUDBED - MUlti-Disciplinary Benthic Exchange Dynamics: Carl Friedrichs (project leader), Robert Diaz, Courtney Harris, Steven Kuehl, Jesse McNinch (all Virginia Institute of Marine Science), Lawrence Sanford (University of Maryland Center for Environmental Science) and Linda Schaffner (VIMS)
BOTTOMS UP - Benthic Observatory and Technology Testbed On the Mid Shelf - Understanding Processes: William Savidge (project leader), James Nelson, Dana Savidge, Richard Jahnke, Ann Gargett (all Skidaway Institute of Oceanography), George Voulgaris (University of South Carolina) and Tim Short (University of South Florida)
Buoyancy-Driven Transport Processes
RISE - River Influences on Shelf Ecosystems - Principal Investigators Barbara Hickey (lead), Evelyn Lessard, Parker MacCready (University of Washington); Mike Kosro, Jim Moum, John Nash, William Peterson (Oregon State University); Antonio Baptista, David Jay (Oregon Graduate Institute); Ed Dever (Oregon State University); Ken Bruland and Raphael Kudela (UC Santa Cruz). RISE focuses on the highly productive eastern boundary plume of the Columbia River - a plume large enough to be of regional importance but small enough to allow determination of dominant processes. RISE has examined three hypotheses: 1) during upwelling the growth rate of phytoplankton within the plume exceeds that in nearby areas outside the plume being fueled by the same upwelling nitrate; 2) the plume enhances cross-margin transport of plankton and nutrients; and 3) plume-specific nutrients Fe and Si enhance productivity on nearby shelves. During the RISE June 2005 expeditionary period off the Columbia River, the thermocline was much deeper and productivity was far lower than in previous years due to a delay in the onset of upwelling. Drifter studies demonstrated that initial trajectories are strongly controlled by tides with anticyclonic circulation in the nearfield plume. Soliton generation was observed via Triaxus sections. NLIWs upstream of the front can extend much deeper than the plume and could be important to mixing nutrients.
LaTTE - Lagrangian Transport and Transformation Experiment - Principal Investigators Robert Chant (lead), John Reinfielder, Scott Glenn, Oscar Schofield, John Wilkin (Rutgers University); Robert Houghton, Bob Chen (Lamont-Doherty Earth Observatory); Meng Zhou (University of Massachusetts Boston); Paul Bissett (FERI); Mark Moline (Calpoly); and Tom Frazer (University of Florida Gainesville). Using coordinated field and numerical experiments, LATTE has examined the processes controlling the transport and fate of nutrients and chemical contaminants in the Hudson River plume. The plume emanates from one of the nation's most urban estuaries - the New York/New Jersey Harbor complex. Towed-vehicle studies undertaken within the framework of an operational ocean observatory have allowed physical processes which transport/mix material in a buoyant plume to be differentiated from biological and chemical transformation processes. LaTTE's 2005 field season provided important observations concerning Hudson River plume dynamics in the estuarine exit and nearshore region, trace metal enrichment in plume particles, and the evolution of suspended particle concentrations. Reduced oxygen concentrations in the bottom waters were observed. Significant southeastward transport of freshwater was also highlighted. Field efforts for 2006 included benthic studies to follow metal and organic compound signatures offshore and exploring the trophic transfer of heavy metals.
COAST - Coastal Ocean Advances in Shelf Transport (OSU, UNC, NMFS, LDEO): Fifty-five papers in progress or published by COAST PIs include a special section of the Journal of Geophysical Research with 17 papers based on COAST's 2001 field study and modeling efforts. Nine manuscripts are published or underway for the 2003 winter downwelling effort. One PhD and 3 MS theses have been supported. For information about COAST, contact project leader Jack Barth.
WEST - Wind Events in Shelf Transport (Scripps, SFSU, UC-Santa Cruz, UC-Davis, U Nevada-Reno): WEST has developed a special volume focusing on the summer 2001 field season results and some interannual comparisons for Deep-Sea Research II. Other WEST-specific papers have been published in a variety of journals. An additional series of papers emphasizing synthesis and seasonal comparisons is anticipated. Five MS and 2 PhD theses have been supported. For more information about WEST, contact project leader John Largier.