RRS Charles Darwin CD88
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Charles Darwin (74AB) |
| Cruise identifier | CD88 |
| Cruise period | 1994-07-25 — 1994-08-15 |
| Status | Completed |
| Port of departure | Reykjavík, Iceland |
| Port of return | Ponta Delgada, Portugal |
| Purpose | Research |
| Objectives | Collection of high-quality kasten and box cores samples, sea-bottom photographs, water-column chemical and suspended sediment data. |
| Chief scientist | I Nicholas McCave (University of Cambridge Department of Earth Sciences) |
| Project | NE Atlantic Palaeoceanography and climate change |
| Coordinating body | UK NERC |
| Cruise report |  (4.42 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Mid Atlantic Ridge, Iceland Basin, Bjorn Ridge, Gardar Ridge |
| Track charts | (0.04 MB) |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of profiles = 25 Description: GO Rosette with 10l Niskin bottles for salinity |
| CTD stations | Quantity: number of profiles = 25 Description: full depth Neil Brown CTDO+SeaTech 0.25m transmissometer |
| Transparency (eg transmissometer) | Quantity: number of profiles = 25 Description: full depth Neil Brown CTDO+SeaTech 0.25m transmissometer |
| Chemical oceanography | |
| Oxygen | Quantity: number of profiles = 25 Description: full depth Neil Brown CTDO+SeaTech 0.25m transmissometer |
| Phosphate | Quantity: number of profiles = 25 Description: GO rosette with 10l GO-FLO bottles |
| Trace elements | Quantity: number of profiles = 25 Description: GO rosette with 10l GO-FLO bottles for trace metal analysis(Cd) |
| Contamination | |
| Suspended matter | Quantity: number of profiles = 25 Description: some bottles fired in pairs to give 20l for filtration through 0.4microm filter |
| Geology and geophysics | |
| Core - soft bottom | Quantity: number of deployments = 18 Description: 15 Kasten cores w. 15cm square barrel & 3 20cm square barrel |
| Core - soft bottom | Quantity: number of deployments = 6 Description: Piston cores with 1metre pilot trigger core |
| Core - soft bottom | Quantity: number of deployments = 19 Description: Box cores with 'Sandia Mk3' corer |
| Bottom photography | Quantity: number of stations = 17 Description: 20 photos per station with UMEL camera |
| Single-beam echosounding | Quantity: track kilometres = 2800 Description: 10kHz Simrad echo-sounder |
| Single-beam echosounding | Quantity: track kilometres = 600 Description: swath line down median valley of mid-Atlantic ridge |
| Multi-beam echosounding | Quantity: track kilometres = 500 Description: swath bathymetry of some core sites |
| Single channel seismic reflection | Quantity: track kilometres = 1750 Description: 3.5kHz acoustic profiler |
| Data held at BODC | |
| Discrete samples | |
| 20 Box core | |
| 25 CTD frame plus rosette sampler | Transmittance and attenuance of the water column Salinity of the water column Temperature of the water column Dissolved oxygen parameters in the water column Concentration of suspended particulate material in the water column Density of the water column Raw suspended particulate material concentration sensor output |
| 18 Kasten corer | |
| 6 Piston corer | |
| 17 Underwater camera system | |
| 4 Unspecified zooplankton net or nets |
