Louisiana Universities Marine Consortium (LUMCON)
http://hdl.handle.net/1834/17566
2024-03-25T21:40:05ZYoung Scholars Cruise Report: Data Report: CTD and Hydrographic Data, R/V Pelican Cruise, July 1-4, 1993.
http://hdl.handle.net/1834/41927
Young Scholars Cruise Report: Data Report: CTD and Hydrographic Data, R/V Pelican Cruise, July 1-4, 1993.
Toon, R.; Shah, S.; Toler, E.
Louisiana Young Scholars in Marine Science is a program supported by the National Science Foundation and the LUMCON Foundation, Inc. Ten students who have completed their junior year of high school and are entering their senior year were selected on scholastic merit for the program in the summer of 1993. As a part of this program, a 3-day research cruise was held aboard the R/V Pelican. The purpose of the cruise was two-fold: 1) to acquaint the students with some oceanographic sampling techniques and procedures; and 2) to characterize water column properties in different regions of the northern Gulf of Mexico. This report summarizes the results of this cruise.
1993-07-01T00:00:00ZZooplankton Community Characterization: Oceanic and Shelf Transect (ZCCOAST) Data Report: CTD and Hydrographic Data, Zooplankton Counts, R/V Pelican Cruise, June 25-27, 1991.
http://hdl.handle.net/1834/41926
Zooplankton Community Characterization: Oceanic and Shelf Transect (ZCCOAST) Data Report: CTD and Hydrographic Data, Zooplankton Counts, R/V Pelican Cruise, June 25-27, 1991.
Toon, R.; Dagg, Michael J.; D'Agrosa, C.; Solet, D.
The purpose of this cruise was to characterize the zooplankton community across the continental shelf and into the oceanic Gulf of Mexico. Five stations due south of the sea buoy off of Cocodrie (LA) were selected at approximately the 25, 50, 100, 400, and 600 fathom contours. At each station a CTD cast was done to acquire hydrographic data. At the time of each cast, water was also collected for pigment and nutrient analyses. Also, at each station, net tows were done for zooplankton collection.
1993-05-01T00:00:00ZDOE Coastal Ocean Program: "Assimilation and Transfer of Carbon in Oligotrophic and Eutrophic Coastal Water Columns" Data Report: CTD and Hydrographic Data, R/V Pelican Cruise no. 92-10, October 19-27, 1992.
http://hdl.handle.net/1834/41925
DOE Coastal Ocean Program: "Assimilation and Transfer of Carbon in Oligotrophic and Eutrophic Coastal Water Columns" Data Report: CTD and Hydrographic Data, R/V Pelican Cruise no. 92-10, October 19-27, 1992.
Toon, R.; Dagg, Michael J.
Water column processes were examined in two environments within the continental margin of the northern Gulf of Mexico. Location I was at the shelf break and location II was at the inner to mid shelf. Each location was first characterized by a brief mapping exercise with the ship's flow-through monitoring system called MIDAS. This system monitors surface water conditions of temperature, salinity, chlorophyll fluorescence and light transmission. Each is plotted as a function of the ship's cruise track, providing a real time image of surface water properties. CTD profiles provided vertical resolution at selected sites. At each location, the information provided by the mapping output and CTD was used to select a location for deployment of a floating sediment trap array. At the slope location, traps were set at 65 m and 90 m. At the inner shelf station, traps were set for 17 m and 25 m. In both cases, water column processes in the vicinity of the drifting trap array were characterized over a 2 day deployment. During each trap deployment, depth profiles of temperature, salinity, chlorophyll and nutrient concentrations were made several times a day. Process measurements included phytoplankton primary production, P I properties and growth rate, bacterial production, water column respiration, microzooplankton grazing (2 methods), and mesozooplankton grazing (2 methods). At each location, additional water column measurements included: DOC profiles; quantification of dissolved carbohydrates; isolation and characterization of dissolved organic matter; phytoplankton pigments; irradiance profiles; and POC/PON. A budget of water column processes will be constructed at each of the two environmentally distinct deployment sites to determine carbon inputs, rates of recycling and fates within the upper water column.
1992-12-01T00:00:00ZDOE Coastal Ocean Program: Cruise in Support of Proposal Titled "Assimilation and Transfer of Carbon in Oligotrophic and Eutrophic Coastal Water Columns", Data Report: CTD and Hydrographic Data, R/V Pelican Cruise no. PE930504, May 5 - May 13, 1993.
http://hdl.handle.net/1834/41924
DOE Coastal Ocean Program: Cruise in Support of Proposal Titled "Assimilation and Transfer of Carbon in Oligotrophic and Eutrophic Coastal Water Columns", Data Report: CTD and Hydrographic Data, R/V Pelican Cruise no. PE930504, May 5 - May 13, 1993.
Toon, R.; Dagg, Michael J.
Water column processes were examined in two environments within the continental margin of the northern Gulf of Mexico. Location I was at the shelf break/slope and location II was at an inner to mid shelf location. Each location was first characterized by a brief mapping exercise done with the ship's flow-through monitoring system called MIDAS. This system monitors surface water conditions of temperature, salinity, chlorophyll fluorescence and light transmission. Each is plotted as a function of the ship's cruise track, providing a real time image of surface water properties. CTD profiles were used to provide vertical resolution at selected sites during the map. At each location, the information provided by the mapping output and CTD drops was used to select a location for deployment of a floating sediment trap array. Traps were set for 2 depths. At the slope location, traps were set for 65 m and 90 m. At the inner shelf station, traps were set for 17 m and 25 m. At the slope station, water column processes at the trap site was measured over a 3 day duration during which the trap array was tracked by the vessel. At the mid-shelf site, the traps were deployed for two days. During each trap deployment, hydrographic measurements were measured four times a day with the CTD. Depth profiles of chlorophyll and nutrient concentrations were made for each cast. Process measurements included phytoplankton production and P vs. I curves, bacterial production, water column respiration, microzooplankton grazing (2 methods), and mesozooplankton grazing (2 methods). At each location, additional water column measurements included: DOC profiles; quantification of dissolved carbohydrates; and isolation and characterization of dissolved organic matter. A budget of water column processes will be compared with vertical flux measured by sediment traps at each site to determine what fraction of production is recycled within the photic zone and whether recycling efficiency varies between sites.
1993-08-01T00:00:00Z