Cruise inventory
RRS James Clark Ross JR20061215 (JR155)
Cruise summary report
| Cruise Info. | |||||||||||||||||
| Ship name (ship code) | RRS James Clark Ross (74JC) | ||||||||||||||||
| Cruise identifier | JR20061215 (JR155) | ||||||||||||||||
| Cruise period | 2006-12-15 — 2006-12-17 | ||||||||||||||||
| Status | Completed | ||||||||||||||||
| Port of departure | Rothera, Antarctica | ||||||||||||||||
| Port of return | Rothera, Antarctica | ||||||||||||||||
| Purpose | Research | ||||||||||||||||
| Objectives | This short cruise on the RRS James Clark Ross was part of a continuing series as part of an AFI project (NERC NER/G/S/2002/00024 Biogeochemical Particle Flux Study in Marguerite Bay Antarctic Peninsula AFI4/13 PIs Jickells, Clarke, Brandon and Meredith) to study the physical and chemical properties, primary productivity processes and sedimentation processes in Marguerite Bay. The work is designed to augment the ongoing BAS Rothera Biogeochemical Times Series (RaTS) programme in Ryder Bay in northern Marguerite Bay, and to extend the programme into the open waters of Marguerite Bay. The sampling is therefore undertaken at two sites, the RaTS station in Ryder Bay and in the deeper water within Marguerite Bay itself. The cruise also contributed to another AFI project (NERC AFI4/02) PIs Elderfield, Ganeshram, Rickerby and de la Rocha "Behaviour of trace elements and isotope ratios of sea-ice brine and microaalgae: reconstructing the Antarctic sea-ice environment."
Intense sampling at the RatS programme site was undertaken during the 2005/6 austral summer. In this second season (2006/7), moorings deployed earlier in the project were continued through a further full season and additional sediment sampling was undertaken. Hence the aim of this cruise was to 1. recover, service and redeploy the moorings previously deployed on JR136/7 in 2006, 2. conduct CTD casts to describe the physical structure of the water column and to provide water samples for nutrient and particulate matter analyses, 3. take box cores at both sites. The locations were, as on previous cruises for this project, one 'deep' mooring 22 miles from Rothera research station with a ~840m water column depth and one 'shallow' mooring at the Ryder Bay site (RaTS) 2 miles from Rothera with a ~500 m water column depth (exact positions are described in the cruise narrative). | ||||||||||||||||
| Chief scientist | Tim Jickells (University of East Anglia School of Environmental Sciences) | ||||||||||||||||
| Cruise report |  (1.02 MB) | ||||||||||||||||
| Ocean/sea areas | |||||||||||||||||
| General | Southern Ocean | ||||||||||||||||
| Specific | Marguerite Bay, Antarctic Peninsula | ||||||||||||||||
| Track charts | (0.12 MB) | ||||||||||||||||
| Measurements | |||||||||||||||||
| Physical oceanography | |||||||||||||||||
| Water bottle stations | Quantity: number of stations = 2 Description: 2 CTD stations with water samples collected for nutrient analysis | ||||||||||||||||
| CTD stations | Quantity: number of stations = 2 Description: 2 CTD stations with water samples collected for nutrient analysis | ||||||||||||||||
| Geology and geophysics | |||||||||||||||||
| Core - soft bottom | Quantity: number of stations = 2 Description: 2 box core stations | ||||||||||||||||
| Moorings, landers, buoys | |||||||||||||||||
| Physical oceanography | |||||||||||||||||
| Current meters | 67° 56' 35" S 68° 22' 51" W — Sediment traps and current meters recovered and deployed | ||||||||||||||||
| Biology and fisheries | |||||||||||||||||
| Sediment traps | 67° 56' 35" S 68° 22' 51" W — Sediment traps and current meters recovered and deployed | ||||||||||||||||
| Data held at BODC | |||||||||||||||||
| Series/Profiles | |||||||||||||||||
| 1 Acoustic doppler current profiler | Unspecified Metadata parameters Date and time Horizontal velocity of the water column (currents) Platform or instrument orientation Reference numbers Vertical spatial coordinates Unspecified Metadata parameters Date and time Horizontal velocity of the water column (currents) Platform or instrument orientation Reference numbers Vertical spatial coordinates
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| 3 Moored CTD | Moored instrument depth Date and time Density of the water column Electrical conductivity of the water column Temperature of the water column Salinity of the water column Reference numbers Moored instrument depth Date and time Density of the water column Electrical conductivity of the water column Temperature of the water column Salinity of the water column Reference numbers
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| 2 Water temperature and/or salinity monitor | Date and time Sea level expressed as pressure Temperature of the water column Reference numbers Sea level Date and time Sea level expressed as pressure Temperature of the water column Reference numbers Sea level
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