BODC Cruise Metadata Report for RRS James Clark Ross (74JC) cruise JR20111127 (JR254D, JR264, JR265)
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | RRS James Clark Ross (74JC) cruise JR20111127 (JR254D, JR264, JR265) |
|---|---|
| Short name | JR20111127 (JR254D, JR264, JR265) |
| Objectives and Narrative |
JR265: This cruise carried out the 17th complete occupation of the Drake Passage CTD section, established during the World Ocean Circulation Experiment as repeat section SR1b. It was first occupied by the National Oceanography Centre (previously IOSDL and then SOC) in collaboration with the British Antarctic Survey in 1993, and has been re-occupied most years since then. Thirty two full depth stations were performed during JR265: two test stations, and all 30 of the nominal stations for the SR1b Drake Passage section. The northern-most 9 stations have been shifted from their nominal positions to lie along 58?W, as for JC031 (Feb-Mar 2009). An initial result is that the estimated total transport measured across the section was 133 Sv which compares well to an average transport measured from the 16 previous UK cruises of 135 Sv (standard deviation of 7 Sv).
This hydrographic cruise, was carried out in conjunction with both cruise JR245D, a "Waves Aerosol and Gas Exchange Study" (WAGES) intensive observation cruise, and cruise JR264, led by NOC-L staff. The CTD was an underwater SBE 9 plus unit equipped with the following sensors: dual temperature and conductivity sensors, a pressure sensor encased in the SBE underwater unit, a SBE-43 oxygen probe, an Aquatracka MKIII fluorometer, a transmissometer, an upward- looking downwelling PAR sensor, and an altimeter. A downward-looking LADCP (RDI Workhorse Monitor 300 kHz) was deployed on all stations. Various underway measurements were obtained, including navigation, VM-ADCP, sea surface temperature and salinity, water depth and various meteorological parameters. A practical aim during this cruise was to update the detailed guides for each of the hydrographic data streams which were first written during JR195 in 2009. The hydrographic data analysis was performed using "MSTAR", a suite of Matlab programs developed at NOCS by Brian King and used on the JCR for the first time during JR195. |
| Ship | RRS James Clark Ross |
| Departure Port | Stanley, Falkland Islands (Malvinas) |
| Departure Date | 2011-11-27 |
| Arrival Port | Stanley, Falkland Islands (Malvinas) |
| Arrival Date | 2011-12-24 |
| Principal Scientist(s) | Margaret J Yelland (National Oceanography Centre, Southampton), Miguel Angel Morales Maqueda (National Oceanography Centre, Liverpool) |
| Responsible Organisation | National Oceanography Centre, Southampton |
| Associated Project(s) | |
| IHB Sea Areas Visited | Southern Ocean |
| Marsden Squares Visited | 483/484/485/520/521/522/523 |
| Work Area Description | Drake Passage |
| Unable to lookup cruise bounds at this time | |
| Work Area Bounding Polygon | |
| Southern Limit | unknown |
| Northern Limit | unknown |
| Western Limit | unknown |
| Eastern Limit | unknown |
Cruise Inventory Datasets
| Physical oceanography | |
|---|---|
| Bathythermograph |
Quantity:
activity duration in days =
11
Description: Sea floor depth using a Kongsberg EA600 single beam and EM122 multi-beam echo sounders |
| CTD stations |
Quantity:
number of stations =
32
Description: Sea water velocities using a RDI WH monitor 300 kHz lowered acoustic doppler current profiler (LADCP) |
| CTD stations |
Quantity:
number of stations =
32
Description: Temperature, conductivity, pressure, transmittance, fluorescence, oxygen and back scatter using a SeaBird SBE 9 plus mounted on a stainless steel CTD frame. Station depths ranged from 1.7 - 5702 m |
| Current profiler (eg ADCP) |
Quantity:
activity duration in days =
11
Description: Water velocities using a 75 kHz RD Instruments OS75 vessel mounted acoustic doppler current profiler (VMADCP) |
| Current profiler (eg ADCP) |
Quantity:
number of stations =
32
Description: Sea water velocities using a RDI WH monitor 300 kHz lowered acoustic doppler current profiler (LADCP) |
| Optics (eg underwater light levels) |
Quantity:
activity duration in days =
11
Description: Underway salinity, temperature, transmittance and fluorescence from SurfMet system |
| Subsurface temperature and salinity measurements |
Quantity:
activity duration in days =
11
Description: Sea floor depth using a Kongsberg EA600 single beam and EM122 multi-beam echo sounders |
| Subsurface temperature and salinity measurements |
Quantity:
activity duration in days =
11
Description: Water velocities using a 75 kHz RD Instruments OS75 vessel mounted acoustic doppler current profiler (VMADCP) |
| Surface measurements underway (T,S) |
Quantity:
activity duration in days =
11
Description: Underway salinity, temperature, transmittance and fluorescence from SurfMet system |
| Surface measurements underway (T,S) |
Quantity:
activity duration in days =
11
Description: Discrete salinity samples from underway supply, analysed using an Autosal salinometer. Used to calibrate underway salinity sensor in the OceanLogger system |
| Transparency (eg transmissometer) |
Quantity:
activity duration in days =
11
Description: Underway salinity, temperature, transmittance and fluorescence from SurfMet system |
| Transparency (eg transmissometer) |
Quantity:
number of stations =
32
Description: Temperature, conductivity, pressure, transmittance, fluorescence, oxygen and back scatter using a SeaBird SBE 9 plus mounted on a stainless steel CTD frame. Station depths ranged from 1.7 - 5702 m |
| Water bottle stations |
Quantity:
number of stations =
32
Description: Discrete salinity samples collected from CTD bottles: CTD frame fitted with SBE 32, 24-way carousel and 24 x 12 L niskin bottles. Samples analysed using an Autosal salinometer. Used to calibrate CTD salinity |
| Meteorology | |
| Routine standard measurements |
Quantity:
activity duration in days =
11
Description: Underway atmospheric pressure, air temperature, air humidity, total irradiance (TIR), photosynthetic radiation (PAR) from the OceanLogger system and wind speed and wind direction from the met system. |
Cruise Inventory Mooring/Buoy Operations
| Latitude | Longitude | Data type | Description |
|---|---|---|---|
| 56° 8' S | 57° 34' W | Neutrally buoyant floats | 2/12/11 02:33 GMT (CTD station 011). Deployed Met Office Argo float serial no 4901. Pressure, temperature and conductivity profiles over 5 - 2000 db |
| 57° 6' S | 57° 0' W | Neutrally buoyant floats | 2/12/11 16:26 GMT (CTD station 014). Deployed Met Office Argo float serial no 4902. Pressure, temperature and conductivity profiles over 5 - 2000 db |
| 55° 9' S | 58° 0' W | Neutrally buoyant floats | 29/11/11 14:20 GMT (CTD station 007). Deployed Met Office Argo float serial no 4900. Pressure, temperature and conductivity profiles over 5 - 2000 db |
| 58° 3' S | 56° 27' W | Neutrally buoyant floats | 3/12/11 07:13 GMT (CTD station 017). Deployed Met Office Argo float serial no 4903. Pressure, temperature and conductivity profiles over 5 - 2000 db |
| 59° 0' S | 55° 51' W | Neutrally buoyant floats | 3/12/11 21:09 GMT (CTD station 020). Deployed Met Office Argo float serial no 4999. Pressure, temperature and conductivity profiles over 5 - 2000 db |
| 60° 0' S | 55° 14' W | Neutrally buoyant floats | 4/12/11 10:51 GMT (CTD station 023). Deployed Met Office Argo float serial no 4998. Pressure, temperature and conductivity profiles over 5 - 2000 db |
Summary of BODC Data Holdings for the Cruise
National Oceanographic Database
Summary
| # Series | Instrument Description | Parameters |
|---|---|---|
| 31 | 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 |
Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)
Full List
| BODC Reference | Instrument Description | Date/Time | Location | |
|---|---|---|---|---|
| 1363512 | CTD/STD cast | 2011-11-28 21:55Z to 2011-11-28 22:01Z | 54° 47' S, 58° 0' W | Click for more |
| 1363524 | CTD/STD cast | 2011-11-28 23:21Z to 2011-11-28 23:32Z | 54° 54' S, 57° 59' W | Click for more |
| 1363536 | CTD/STD cast | 2011-11-29 01:39Z to 2011-11-29 01:59Z | 54° 58' S, 57° 58' W | Click for more |
| 1363548 | CTD/STD cast | 2011-11-29 03:33Z to 2011-11-29 03:59Z | 55° 0' S, 58° 0' W | Click for more |
| 1363561 | CTD/STD cast | 2011-11-29 05:11Z to 2011-11-29 05:47Z | 55° 2' S, 58° 0' W | Click for more |
| 1363573 | CTD/STD cast | 2011-11-29 11:04Z to 2011-11-29 11:48Z | 55° 5' S, 58° 0' W | Click for more |
| 1363585 | CTD/STD cast | 2011-11-29 13:49Z to 2011-11-29 14:41Z | 55° 9' S, 58° 0' W | Click for more |
| 1363597 | CTD/STD cast | 2011-11-29 16:43Z to 2011-11-29 17:44Z | 55° 12' S, 57° 59' W | Click for more |
| 1363604 | CTD/STD cast | 2011-11-29 21:38Z to 2011-11-29 22:49Z | 55° 31' S, 58° 1' W | Click for more |
| 1363616 | CTD/STD cast | 2011-12-01 18:44Z to 2011-12-01 20:11Z | 55° 49' S, 57° 48' W | Click for more |
| 1363628 | CTD/STD cast | 2011-12-02 01:09Z to 2011-12-02 02:10Z | 56° 9' S, 57° 36' W | Click for more |
| 1363641 | CTD/STD cast | 2011-12-02 05:51Z to 2011-12-02 06:52Z | 56° 28' S, 57° 25' W | Click for more |
| 1363653 | CTD/STD cast | 2011-12-02 10:42Z to 2011-12-02 11:43Z | 56° 46' S, 57° 13' W | Click for more |
| 1363665 | CTD/STD cast | 2011-12-02 15:20Z to 2011-12-02 16:27Z | 57° 6' S, 57° 1' W | Click for more |
| 1363677 | CTD/STD cast | 2011-12-02 20:45Z to 2011-12-02 21:47Z | 57° 25' S, 56° 49' W | Click for more |
| 1363689 | CTD/STD cast | 2011-12-03 01:19Z to 2011-12-03 02:18Z | 57° 43' S, 56° 38' W | Click for more |
| 1363690 | CTD/STD cast | 2011-12-03 05:54Z to 2011-12-03 07:01Z | 58° 3' S, 56° 27' W | Click for more |
| 1363708 | CTD/STD cast | 2011-12-03 10:39Z to 2011-12-03 11:44Z | 58° 22' S, 56° 15' W | Click for more |
| 1363721 | CTD/STD cast | 2011-12-03 15:16Z to 2011-12-03 16:20Z | 58° 40' S, 56° 3' W | Click for more |
| 1363733 | CTD/STD cast | 2011-12-03 19:58Z to 2011-12-03 21:01Z | 59° 0' S, 55° 51' W | Click for more |
| 1363745 | CTD/STD cast | 2011-12-04 00:37Z to 2011-12-04 01:41Z | 59° 19' S, 55° 39' W | Click for more |
| 1363757 | CTD/STD cast | 2011-12-04 05:07Z to 2011-12-04 06:09Z | 59° 40' S, 55° 26' W | Click for more |
| 1363769 | CTD/STD cast | 2011-12-04 09:37Z to 2011-12-04 10:37Z | 60° 0' S, 55° 14' W | Click for more |
| 1363770 | CTD/STD cast | 2011-12-04 14:26Z to 2011-12-04 15:24Z | 60° 19' S, 55° 1' W | Click for more |
| 1363782 | CTD/STD cast | 2011-12-04 18:56Z to 2011-12-04 19:48Z | 60° 39' S, 54° 48' W | Click for more |
| 1363794 | CTD/STD cast | 2011-12-04 22:00Z to 2011-12-04 22:44Z | 60° 48' S, 54° 44' W | Click for more |
| 1363801 | CTD/STD cast | 2011-12-05 01:44Z to 2011-12-05 02:33Z | 60° 49' S, 54° 43' W | Click for more |
| 1363813 | CTD/STD cast | 2011-12-05 03:43Z to 2011-12-05 04:01Z | 60° 51' S, 54° 42' W | Click for more |
| 1363825 | CTD/STD cast | 2011-12-05 14:10Z to 2011-12-05 14:22Z | 60° 58' S, 54° 37' W | Click for more |
| 1363837 | CTD/STD cast | 2011-12-05 15:27Z to 2011-12-05 15:34Z | 61° 3' S, 54° 35' W | Click for more |
| 1363850 | CTD/STD cast | 2011-11-28 12:33Z to 2011-11-28 13:14Z | 53° 27' S, 57° 57' W | Click for more |
Project Database
| # Events | Gear Type | Parameters Held |
|---|---|---|
| 31 | CTD frame plus rosette sampler | Salinity of the water column |
| 38 | 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)
