Publication Date:
2022-03-06
Description:
The Nutrient Enhanced Coastal Ocean Productivity (NECOP) Program is a component of NOAA's Coastal Ocean Program. The central hypothesis of this research is: Anthropogenic nutrient inputs have enhanced coastal ocean productivity with subsequent impacts on coastal ocean water quality, living resource yields, and the global marine carbon cycle. The initial study area for this program is the mississippi/Atchafalaya River Outflow and adjacent Louisiana shelf region. NECOP cruises I and II were in July/August 1990 and March 1991. The focus of this cruise, NECOP III, was on water column processes particularly phytoplankton, bacterial, and zooplankton processes as they relate to particulate flux. To accomplish these objectives we visited the plume region, the hypoxia region and a blue water region well offshore. In each region, the surface water was initially characterized by use of a flow-through mapping system aboard the vessel PELICAN, the MIDAS system. In addition an ADCP system was deployed with a different frequency being selected for each region. The high Frequency (1200 khz) transducer was used in the plume region, the mid-frequency (600 khz) transducer in the hypoxia region and the low frequency (300 khz) system in the offshore region. Within the plume and hypoxia regions, work was accomplished while following free floating sediment traps over 36-48 hour periods. In addition to routine hydrographic sampling (CTD, nutrients, chlorophyll, suspended particulate matter) experimental measurements of phytoplankton production, bacterial production, phosphorus uptake and turnover, zooplankton biomass and zooplankton feeding rates were made at appropriate intervals while tracking the sediment traps. This report summarizes the CTD and basic hydrographic measurements made during the cruise.
Description:
Published
Description:
Non Refereed
Keywords:
ASFA_2015::O::Oceanography
;
ASFA_2015::C::CTD measurements
Repository Name:
AquaDocs
Type:
Report
Format:
135
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