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RRS Charles Darwin CD77
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Charles Darwin (74AB) |
Cruise identifier | CD77 |
Cruise period | 1993-03-18 — 1993-04-18 |
Status | Completed |
Port of departure | Ponta Delgada, Portugal |
Port of return | Ponta Delgada, Portugal |
Purpose | Research |
Objectives | Study of hydrothermal plumes and hydrothermal sedimentation |
Chief scientist | Harry Elderfield (University of Cambridge Department of Earth Sciences) |
Project | BRIDGE |
Coordinating body | NERC |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Mid-Atlantic ridge, 23-29N;43-45W |
Track charts | |
Measurements | |
Physical oceanography | |
CTD stations | Quantity: number of profiles = 21 Description: Deep casts, principally over 50-500m above bottom with transmissometer |
Subsurface temperature and salinity measurements | Quantity: number of deployments = 19 Description: deployments of ZAPS sled with CTD-nephelometer, Mn probe |
Transparency (eg transmissometer) | Quantity: number of profiles = 21 Description: Deep casts, principally over 50-500m above bottom with transmissometer |
Chemical oceanography | |
Other dissolved gases | Quantity: number of profiles = 21 Description: rosette sampler (11 bottles) - radon and helium |
Phosphate | Quantity: number of profiles = 21 Description: rosette sampler (11 bottles) |
Nitrate | Quantity: number of profiles = 21 Description: rosette sampler (11 bottles) |
Silicate | Quantity: number of profiles = 21 Description: rosette sampler (11 bottles) |
Contamination | |
Trace metals | Quantity: number of profiles = 21 Description: rosette sampler (11 bottles) - metals and aluminium |
Geology and geophysics | |
Dredge | Quantity: number of deployments = 3 Description: rock/pipe dredges |
Core - soft bottom | Quantity: number of cores = 4 Description: 1.2m gravity cores |
Other geological/geophysical measurements | Quantity: number of deployments = 8 Description: bottom mounted pumps for particles |
Moorings, landers, buoys | |
Geology and geophysics | |
Other geological/geophysical measurements | 29° 10' 0" N 43° 10' 59" W — 0001-1225 12 Apr |
Other geological/geophysical measurements | 23° 22' 0" N 44° 57' 0" W — 0444-1344 30 Mar |
Other geological/geophysical measurements | 23° 22' 0" N 44° 57' 0" W — 0241-1029 31 Mar |
Other geological/geophysical measurements | 29° 10' 0" N 43° 10' 0" W — 0219-1650 10 Apr |
Other geological/geophysical measurements | 26° 7' 59" N 44° 49' 59" W — 2325 03 Apr-1258 04 Apr |
Other geological/geophysical measurements | 26° 7' 59" N 44° 49' 59" W — 0053-1508 05 Apr |
Other geological/geophysical measurements | 29° 10' 0" N 43° 10' 59" W — 0020-1220 09 Apr |
Other geological/geophysical measurements | 23° 22' 0" N 44° 57' 0" W — 0531-1300 01 Apr |