RRS Charles Darwin CD177

Cruise summary report

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Cruise Info.

Ship name (ship code)

RRS Charles Darwin (74AB)

Cruise identifier

CD177

Cruise period

2005-11-12 — 2005-11-29

Status

Completed

Port of departure

Santa Cruz de Tenerife, Spain

Port of return

Santa Cruz de Tenerife, Spain

Purpose

Research

Objectives

The goal of this cruise was to recover and redeploy some RAPID-MOC moorings near the Eastern Boundary as part of our six-month turnaround programme. Specific cruise objectives were to:
1. Recover moorings EB1 (24 microcats) and EB2 (MMP profiling from 50m to 2500m with microcats and current meters below), two principal tall eastern boundary moorings, sited on a Topex crossover point near 24N, 24W.
2. Redeploy EB1 (24 inductive microcats plus the telemetry system) and EB2 (MMP mooring).
3. Deploy EBADCP to replace the instrument deployed in April but trawled after 10days and recovered by the R/V Poseidon.
4. Deploy two URI Pressure Inverted Echo Sounders. One deployed in 1000m and one in 5000m next to the BPR lander at mooring EB1.
5. CTD stations for pre and post deployment calibrations of all mooring instrumentation.
6. Search for and if possible recover MMP mooring EB2 deployed in April 2004 and located 100km north south of Gomorra in October 2004.

Chief scientist

Stuart A Cunningham (National Oceanography Centre, Southampton)

Project

RAPID Climate Change

Coordinating body

NERC/NSF/NOAA

Cruise report

(1.11 MB)

Ocean/sea areas

General

North East Atlantic Ocean (limit 40W)

Specific

Eastern Atlantic

Measurements

Physical oceanography

Surface measurements underway (T,S)

Quantity: activity duration in days = 10
Description: Underway sea surface temperatures and salinities. Salinity samples were drawn a few times per day for calibration of surface salinities.

Water bottle stations

Quantity: number of stations = 6
Description: 6 CTD stations, 12xbottle samples / station for salinity analysis.

CTD stations

Quantity: number of stations = 6
Description: 6 CTD stations, 12xbottle samples / station for salinity analysis.

Current profiler (eg ADCP)

Quantity: activity duration in days = 10
Description: Shipboard ADCP 150kHz.

Geology and geophysics

Single-beam echosounding

Quantity: activity duration in days = 10
Description: EA500 echosounding for bathymetry.

Multi-beam echosounding

Quantity: activity duration in days = 1
Description: Swath bathymetry.

Moorings, landers, buoys

Physical oceanography

CTD stations

23° 49' 41" N 24° 6' 0" W — Deployment of Microcat CTDs and telemetry system at site EB1. Deployment depth 5100m. Measuring fixed depth CTDs. 25/11/05.

CTD stations

23° 55' 59" N 24° 3' 0" W — Recovery of McLane Moored Profiler, current meters and Microcat CTDs at site EB2. Depth 5100m. Measuring CTD and current profiles with MMP, fixed depth currents and fixed depth CTDs. 25/11/05.

CTD stations

23° 49' 0" N 24° 6' 0" W — Recovery of Microcat CTDs at site EB1. Deployment depth 5100m. Measuring fixed depth CTDs. 24/11/05.

CTD stations

23° 53' 30" N 24° 3' 24" W — Deployment of McLane Moored Profiler, current meters and Microcat CTDs at site EB2. Deployment depth 5100m. Measuring CTD and current profiles with MMP, fixed depth currents and fixed depth CTDs. 26/11/05.

Current meters

Current profiler (eg ADCP)

27° 55' 59" N 13° 22' 59" W — Deployment of ADCP at site EBADCP. Deployment depth 430m. 20/11/05. Measuring currents.

Sea level (inc. bot. press., inverted echosounder)

23° 48' 29" N 24° 6' 29" W — Deployment of PIES at site EBP1. Deployment depth 5100m. 25/11/05.

Sea level (inc. bot. press., inverted echosounder)

27° 51' 53" N 13° 31' 11" W — Deployment of PIES at site EBP2. Deployment depth 1000m. 20/11/05.

Data held at BODC

Get data

Series/Profiles

2 Acoustic current meter

Reference numbers
Moored instrument depth
Date and time
Temperature of the water column
Platform or instrument orientation
Horizontal velocity of the water column (currents)
Acoustic backscatter in the water column
Electrical conductivity of the water column

[Show series]

[Hide series]

BODC id	Date/Time	Location	Doc.
1976793	2005-11-26 15:00 — 2006-05-17 12:32	23° 53' 29" N 24° 3' 23" W
1976781	2005-11-26 15:00 — 2006-05-17 13:00	23° 53' 29" N 24° 3' 23" W

6 Acoustic doppler current profiler

Reference numbers
Horizontal spatial co-ordinates
Date and time
Raw current meter output parameters
Vertical spatial coordinates
Vertical velocity of the water column (currents)
Horizontal platform movement
Horizontal velocity of the water column (currents)
Metadata parameters
Acoustic backscatter in the water column

[Show series]

[Hide series]

BODC id	Date/Time	Location
684430	2005-11-22 16:30 — 2005-11-23 23:58	27° 54' 55" N 16° 48' 11" W — 25° 7' 19" N 21° 59' 16" W
684429	2005-11-19 12:59:53 — 2005-11-22 06:57:52	28° 28' 18" N 16° 14' 45" W — 28° 28' 27" N 16° 14' 23" W
684442	2005-11-24 00:00 — 2005-11-28 07:58	25° 7' 10" N 21° 59' 35" W — 27° 35' 14" N 17° 38' 13" W
685408	2005-11-22 11:00:13 — 2005-11-22 15:27:13	28° 28' 27" N 16° 14' 23" W — 27° 58' 23" N 16° 36' 12" W
684417	2005-11-16 20:14:22 — 2005-11-17 19:42:21	34° 20' 35" N 13° 55' 2" W — 30° 41' 5" N 15° 16' 46" W
684405	2005-11-14 08:29:05 — 2005-11-16 07:56:03	44° 3' 50" N 10° 14' 58" W — 35° 49' 23" N 13° 30' 29" W

6 CTD/STD cast

Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Density of the water column

[Show series]

Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Density of the water column

[Hide series]

BODC id	Date/Time	Location
1068691	2005-11-26 04:07	23° 56' 0" N 24° 2' 10" W
1068630	2005-11-18 08:46	28° 54' 47" N 15° 55' 46" W
1068666	2005-11-25 20:08	23° 55' 56" N 24° 2' 49" W
1068642	2005-11-24 18:08	23° 47' 26" N 24° 5' 42" W
1068654	2005-11-24 23:38	23° 47' 20" N 24° 5' 44" W
1068678	2005-11-26 00:11	23° 56' 2" N 24° 2' 29" W

1 GPS positioning system

Horizontal spatial co-ordinates
Date and time
Platform or instrument orientation
Horizontal platform movement
Bathymetry and Elevation

[Show series]

Horizontal spatial co-ordinates
Date and time
Platform or instrument orientation
Horizontal platform movement
Bathymetry and Elevation

[Hide series]

BODC id	Date/Time	Location	Doc.
808698	2005-11-12 18:26 — 2005-11-28 08:00	23° 47' 16" N 24° 6' 55" W — 49° 54' 52" N 5° 3' 20" W

1 Meteorological data logger

Horizontal spatial co-ordinates
Air pressure
Date and time
Air temperature
Wind strength and direction

[Show series]

Horizontal spatial co-ordinates
Air pressure
Date and time
Air temperature
Wind strength and direction

[Hide series]

BODC id	Date/Time	Location	Doc.
808686	2005-11-12 18:26 — 2005-11-28 08:00	23° 47' 16" N 24° 6' 55" W — 49° 54' 52" N 5° 3' 20" W

25 Moored CTD

Reference numbers
Moored instrument depth
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column

[Show series]

Reference numbers
Moored instrument depth
Date and time
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column

[Hide series]

BODC id	Date/Time	Location
698763	2005-11-26 15:00:02 — 2006-05-17 12:45	23° 53' 29" N 24° 3' 23" W
698566	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698683	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698505	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698542	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698578	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698702	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698498	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698517	2005-11-25 14:45 — 2006-05-05 11:45	23° 49' 31" N 24° 6' 0" W
698609	2005-11-25 14:45 — 2006-05-05 11:45	23° 49' 31" N 24° 6' 0" W
698610	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698634	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698530	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698591	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698554	2005-11-25 14:45 — 2006-05-05 11:30:02	23° 49' 31" N 24° 6' 0" W
698622	2005-11-25 14:45 — 2006-05-05 11:30:02	23° 49' 31" N 24° 6' 0" W
698751	2005-11-26 15:00 — 2006-05-17 12:45:02	23° 53' 29" N 24° 3' 23" W
698529	2005-11-25 14:45 — 2006-05-05 11:45	23° 49' 31" N 24° 6' 0" W
698671	2005-11-25 14:45:02 — 2006-05-05 11:30:02	23° 49' 31" N 24° 6' 0" W
698695	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W
698714	2005-11-25 14:45 — 2006-05-05 11:45	23° 49' 31" N 24° 6' 0" W
698726	2005-11-26 15:00 — 2006-05-17 12:45	23° 53' 29" N 24° 3' 23" W
698738	2005-11-26 15:00 — 2006-05-17 12:45	23° 53' 29" N 24° 3' 23" W
698646	2005-11-25 14:45 — 2006-05-05 11:30:02	23° 49' 31" N 24° 6' 0" W
698658	2005-11-25 14:45 — 2006-05-05 11:30:01	23° 49' 31" N 24° 6' 0" W

1 Multi-beam echosounder

Reference numbers
Horizontal spatial co-ordinates
Bathymetry and Elevation

[Show series]

Reference numbers
Horizontal spatial co-ordinates
Bathymetry and Elevation

[Hide series]

BODC id	Date/Time	Location	Doc.
770785	2005-11-26 00:00	23° 45' 30" N 24° 10' 10" W — 24° 4' 44" N 23° 43' 10" W

1 Thermosalinograph

Horizontal spatial co-ordinates
Date and time
Salinity of the water column
Temperature of the water column
Metadata parameters

[Show series]

Horizontal spatial co-ordinates
Date and time
Salinity of the water column
Temperature of the water column
Metadata parameters

[Hide series]

BODC id	Date/Time	Location	Doc.
808674	2005-11-12 18:26 — 2005-11-28 08:00	23° 47' 16" N 24° 6' 55" W — 49° 54' 52" N 5° 3' 20" W

Discrete samples

6 CTD frame plus rosette sampler

Salinity of the water column
Temperature of the water column
Density of the water column

5 Instrument mooring

17 Sample taken from ship's non-toxic supply

Salinity of the water column

Resources

RRS Charles Darwin CD177

Cruise summary report

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BODC holdings

EDMED