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Summary of Ship Cruises
A summary of field operations in Long Bay, Sept 2011 - April 2012, associated with each cruise.
- SAV11-27: 8-10 September 2011 – Acrobat tests, some CTD casts, station log sheet needs to be cleaned up
- SAV11-34: 17-19 October 2011 -- Acrobat tests, test samples for CytoSense (flow cytometer), some CTD casts
- SAV11-36: 13-16 November 2011 – deployment (and retrieval) of UNC glider (Ramses) near R3 tower; CTD casts; CytoSense samples; net tows
- SAV11-40: 1-2 December 2011 – deployment of UNC glider (Ramses) near R3 tower; a CTD cast; net tow
- SAV11-44: 13-16 December 2011 – deployment of UNC bottom mooring at LB3 (171 m); retrieval of UNC glider (Ramses); samples for CytoSense analyses; CTD profiles; net tows
- SAV12-02: 18-21 January 2012 -- deployment of SKIO Seahorse profiler and bottom frame at LB2 (76 m); deployment of taunt line and bottom frame at LB1 (31 m); 12 CTD stations, starting at 271 m ending at 30 m. We kept a 5 km spacing from the offshore end until ~45 m. (Section run from ~1905 EST to 2320 EST on 01/19/12).
SAV12-03: 24 January - 02 February, 2012 -- Glider deployments (“Ramses” and “Pelagia”), glider monitoring; Acrobat (towed package) surveys of 3 cross-shelf sections (25 km along-shelf spacing, mid-shelf to upper slope); CTD profiles for hydrography, bio-optical, oxygen; station sampling for chlorophyll, nutrients, flow cytometry; Deployment of 2 moorings off Georgia on return leg to SkIO (75 m and 30 m).
- SAV12-05: 13-26 February 2012 -- Glider recoveries (“Ramses”, “Pelagia”), shipboard replacement of batteries, ballast adjustments, then both units were redeployed. Survey work was conducted using the towed Acrobat package and CTD station section from upper slope to shelf. Deck incubation experiment for primary production, station sampling for various properties. Due to gale-force winds, the ship ran into Wilmington (docked at Cape Fear Community College) on 18 February. When heading back out on 20 February for an Acrobat survey and station work, a problem with a shaft coupling forced return to Wilmington on 21 February for repair work. When repairs were completed, strong SW winds had developed and were forecast to continue for several days, so offshore work was not possible the ship returned to SkIO along the coast.
- SAV12-11: 13-23 March 2012 --Glider recoveries (“Ramses”, “Pelagia”), then battery replacement, reballasting, redeployment (at LB2). Acrobat surveys, upper slope to outer shelf CTD surveys, station sampling for water samples and primary productivity experiments (deck incubations and “photosynthetron”). Attempted to survey a subsurface bloom in the mid-shelf (apparently Phaeocystis). During an Acrobat survey, the tow cable failed over upper slope. The Acrobat package was located with an acoustic range-finder but was too deep for a grapple attempt. With the very mild winter, shelf conditions were already post-winter (warm water across outer to mid-shelf) and not favorable for the winter bloom formation. Given the conditions the cruise was cut short by a few days.
- SAV12-14: 02-05 April 2012 -- Recovery of moored instrument packages at LB3 (150 kHz ADCP in large TRBM pod/frame, MicroCAT, ECO FLNTU fluorometer/turbidity), LB2 (ADCP, MicroCAT, ECOFLNTU), LB1 (two moorings – ADCP; Taut-line package with HOBO T-chain (two with C), 3 ECO FLNTU units); Recovery of “Ramses” and “Pelagia” gliders; CTD section from upper slope to outer shelf (stations at 5 km intervals, LB+60 to LB+30, also at LB2 site), with samples for nutrients at selected stations/depths, some chlorophyll samples; Inter-calibration of the ECO FLNTU fluorometer/turbidity instruments after recovery of moorings (mounted on CTD/carousel for co-located sampling at two depths. This is the last CTD station).