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BODC Cruise Metadata Report for RRS James Clark Ross (74JC) cruise JR20081212 (JR194, JR197)

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RRS James Clark Ross (74JC) cruise JR20081212 (JR194, JR197)
Short name JR20081212 (JR194, JR197)
Objectives and Narrative JR194 was a short CTD section across Drake Passage, making the 14th repeat along WOCE section SR1b. This was also an opportunity to make quantitative microplankton measurements (flow cytometry) extending the line of such measurements from AMT (Atlantic Meridional Transect) from the Falklands south to the Antarctic Peninsula.

The aim of JR197 was to take sea level measurements from Drake Passage. Bottom Pressure Recorders have been used for making measurements of the Antarctic Circumpolar Current (ACC) since 1988, initially in the Scotia Sea and then later across the Drake Passage between the Falkland Islands and the Antarctic peninsula. Some of the Bottom Pressure Recorders (BPRs) are combined with Inverted Echo Sounders (IES). During JR197, one BPR and one BPR/IES were recovered and re-deployed in the Drake Passage. An additional BPR was deployed and a data pod was also recovered from MYRTLE (Multi-Year Return Tidal Level Equipment). The Sea Level Recorders at Stanley, Falkland Islands, Vernadsky and Rothera Research Stations in Antarctica, were also serviced.
Ship RRS James Clark Ross
Departure Port Stanley, Falkland Islands (Malvinas)
Departure Date 2008-12-12
Arrival Port Unknown, Antarctica
Arrival Date 2008-12-23
Principal Scientist(s) Graham D Quartly (National Oceanography Centre, Southampton), Miguel Angel Morales Maqueda (Proudman Oceanographic Laboratory)
Responsible Organisation National Oceanography Centre, Southampton
Associated Project(s) Oceans 2025
IHB Sea Areas Visited South West Atlantic Ocean (limit 20W)
Marsden Squares Visited 485/521/522
Work Area Description Drake Passage
Work Area Bounding Polygon 70S,70W; 50S,70W; 50S,50W; 70S,50W; 70S,70W
Southern Limit 70S
Northern Limit 50S
Western Limit 70W
Eastern Limit 50W

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of stations = 32
Description: 2 test stations near Falklands; 30 for transect along SR1b. Temperature (x2), Salinity (x2), Fluorescence, PAR, Oxygen, Transmittance  
Current profiler (eg ADCP) Quantity: number of stations = 32
Description: LADCP working on most CTD stations  
Current profiler (eg ADCP) Quantity: activity duration in days = 9
Description: Continuous VM ADCP (75 kHz, typically reaching down 800m)  
Neutrally buoyant floats Quantity: number of deployments = 7
Description: ARGO floats deployed on Drake Passage leg  
Surface measurements underway (T,S) Quantity: activity duration in days = 9
Description: Ocean logger, with thermosalinograph (temperature & salinity), fluorometer & transmissometer  
Water bottle stations Quantity: number of stations = 32
Description: Salinity samples (typically 12) taken on all stations  
Biology and fisheries  
Biochemical measurements (eg lipids, amino acids) Quantity: number of stations = 4
Description: Bacterial activity and microbial uptake at ambient concentrations  
Phytoplankton Quantity: number of stations = 32
Description: Flow cytometry analysis (bacterioplankton and micro phytoplankton) of CTD Niskin samples (surface to sea-bed)  
Phytoplankton Quantity: activity duration in days = 9
Description: Flow cytometry analysis (bacterioplankton and micro phytoplankton) of surface (6m depth) samples taken every 30 mins  
Zooplankton Quantity: number of stations = 5
Description: Sea trials of size-fractionated microplankton net  
Meteorology  
Routine standard measurements Quantity: activity duration in days = 9
Description: Met system (air temperature, wind speed & direction, relative humidity, PAR & TIR)  
Geology and geophysics  
Single-beam echosounding Quantity: activity duration in days = 9
Description: Echo sounder (EA600) record of bottom  

Cruise Inventory Mooring/Buoy Operations

Latitude Longitude Data type Description
60° 51' S 54° 42' W Sea level (inc. bot. press., inverted echosounder) Bottom Pressure Recorder and Inverted Echo Sounder deployed Dec 2006, recovered Dec 2008. Drake South.
60° 51' S 54° 42' W Sea level (inc. bot. press., inverted echosounder) Bottom Pressure Recorder and Inverted Echo Sounder deployed Dec 2008. Drake South.
60° 37' S 53° 51' W Sea level (inc. bot. press., inverted echosounder) Bottom Pressure Recorder deployed Dec 2005. Recovered data pod Dec 2008. Main instrument still deployed. MYRTLE
54° 56' S 58° 21' W Sea level (inc. bot. press., inverted echosounder) Bottom Pressure Recorder deployed Dec 2006, recovered Dec 2008. Drake North.
57° 54' S 56° 32' W Sea level (inc. bot. press., inverted echosounder) Bottom Pressure Recorder deployed Dec 2008. Drake Middle.
54° 56' S 58° 21' W Sea level (inc. bot. press., inverted echosounder) Bottom Pressure Recorder deployed Dec 2008. Drake North.

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
32 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Dissolved oxygen parameters in the water column
Electrical conductivity of the water column
Reference numbers
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Visible waveband radiance and irradiance measurements in the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
1077320 CTD/STD cast 2008-12-12 20:30Z to 2008-12-12 20:34Z 51° 46' S, 57° 34' W Click for more
1077332 CTD/STD cast 2008-12-13 06:32Z to 2008-12-13 07:13Z 53° 30' S, 58° 10' W Click for more
1077344 CTD/STD cast 2008-12-13 15:10Z to 2008-12-13 15:20Z 54° 40' S, 58° 32' W Click for more
1077356 CTD/STD cast 2008-12-13 20:03Z to 2008-12-13 20:14Z 54° 55' S, 58° 22' W Click for more
1077368 CTD/STD cast 2008-12-13 21:17Z to 2008-12-13 21:40Z 54° 56' S, 58° 22' W Click for more
1077381 CTD/STD cast 2008-12-13 23:00Z to 2008-12-13 23:31Z 54° 57' S, 58° 21' W Click for more
1077393 CTD/STD cast 2008-12-14 01:41Z to 2008-12-14 02:18Z 55° 4' S, 58° 17' W Click for more
1077400 CTD/STD cast 2008-12-14 04:29Z to 2008-12-14 05:13Z 55° 7' S, 58° 15' W Click for more
1077412 CTD/STD cast 2008-12-14 07:17Z to 2008-12-14 08:08Z 55° 10' S, 58° 13' W Click for more
1077424 CTD/STD cast 2008-12-14 10:05Z to 2008-12-14 11:14Z 55° 12' S, 58° 12' W Click for more
1077436 CTD/STD cast 2008-12-14 15:18Z to 2008-12-14 16:33Z 55° 31' S, 58° 1' W Click for more
1077448 CTD/STD cast 2008-12-14 20:54Z to 2008-12-14 22:20Z 55° 49' S, 57° 48' W Click for more
1077461 CTD/STD cast 2008-12-15 02:56Z to 2008-12-15 03:55Z 56° 9' S, 57° 37' W Click for more
1077473 CTD/STD cast 2008-12-15 07:52Z to 2008-12-15 08:58Z 56° 28' S, 57° 25' W Click for more
1077485 CTD/STD cast 2008-12-15 13:00Z to 2008-12-15 13:59Z 56° 46' S, 57° 13' W Click for more
1077497 CTD/STD cast 2008-12-15 18:14Z to 2008-12-15 19:26Z 57° 4' S, 57° 0' W Click for more
1077504 CTD/STD cast 2008-12-15 23:38Z to 2008-12-16 00:37Z 57° 24' S, 56° 49' W Click for more
1077516 CTD/STD cast 2008-12-16 04:23Z to 2008-12-16 05:21Z 57° 43' S, 56° 37' W Click for more
1077528 CTD/STD cast 2008-12-16 10:47Z to 2008-12-16 11:54Z 58° 3' S, 56° 27' W Click for more
1077541 CTD/STD cast 2008-12-16 15:42Z to 2008-12-16 16:48Z 58° 22' S, 56° 15' W Click for more
1077553 CTD/STD cast 2008-12-16 20:30Z to 2008-12-16 21:34Z 58° 40' S, 56° 3' W Click for more
1077565 CTD/STD cast 2008-12-17 01:31Z to 2008-12-17 02:35Z 59° 0' S, 55° 51' W Click for more
1077577 CTD/STD cast 2008-12-17 06:20Z to 2008-12-17 07:24Z 59° 19' S, 55° 39' W Click for more
1077589 CTD/STD cast 2008-12-17 10:59Z to 2008-12-17 12:03Z 59° 39' S, 55° 25' W Click for more
1077590 CTD/STD cast 2008-12-17 15:48Z to 2008-12-17 16:48Z 60° 0' S, 55° 15' W Click for more
1077608 CTD/STD cast 2008-12-17 20:24Z to 2008-12-17 21:23Z 60° 19' S, 55° 1' W Click for more
1077621 CTD/STD cast 2008-12-18 00:51Z to 2008-12-18 01:45Z 60° 40' S, 54° 49' W Click for more
1077633 CTD/STD cast 2008-12-18 12:00Z to 2008-12-18 12:45Z 60° 48' S, 54° 43' W Click for more
1077645 CTD/STD cast 2008-12-18 14:26Z to 2008-12-18 15:00Z 60° 49' S, 54° 42' W Click for more
1077657 CTD/STD cast 2008-12-18 16:19Z to 2008-12-18 16:37Z 60° 51' S, 54° 42' W Click for more
1077669 CTD/STD cast 2008-12-18 20:15Z to 2008-12-18 20:26Z 60° 58' S, 54° 37' W Click for more
1077670 CTD/STD cast 2008-12-18 21:39Z to 2008-12-18 21:47Z 61° 3' S, 54° 35' W Click for more

Project Database

# Events Gear Type Parameters Held
32 CTD frame plus rosette sampler Salinity of the water column
35 Sample taken from ship's non-toxic supply Salinity of the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report

Cruise Report