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RRS Charles Darwin CD57
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Charles Darwin (74AB) |
Cruise identifier | CD57 |
Cruise period | 1991-03-15 — 1991-04-12 |
Status | Completed |
Port of departure | Santa Cruz de Tenerife, Spain |
Port of return | Ponta Delgada, Portugal |
Purpose | Research |
Objectives | Deep-towed geophysical surveys and sampling of Kane Transform Fault and the adjacent Mid-Atlantic Ridge |
Chief scientist | Roger C Searle (University of Durham, Department of Geological Sciences) |
Cruise report | (0.52 MB) |
Ocean/sea areas | |
General | North Atlantic Ocean |
Specific | Santa Cruz de Tenerife to Ponta Delgada, Azores |
Track charts | |
Measurements | |
Physical oceanography | |
Current meters | Quantity: number of stations = 3 Description: 6 recovered |
Geology and geophysics | |
Dredge | Quantity: number of deployments = 30 Description: (dredges) geochemistry of lavas, petrology of crust |
Bottom photography | Quantity: number of deployments = 2 Description: (tows) towed camera (600 and 800 frames) |
Geophysical measurements made at depth | Quantity: track kilometres = 548.192 Description: TOBI deep towed sidescan, profiler, magnetometer |
Single-beam echosounding | Quantity: track kilometres = 2778 Description: 10kHz PES on passage |
Long/short range side scan sonar | Quantity: track kilometres = 548.192 Description: short range sidescan on TOBI (see G72) |
Gravity measurements | Quantity: track kilometres = 3148.4 Description: continuous gravity, Lacoste and Romberg meter |
Magnetic measurements | Quantity: track kilometres = 2592.8 Description: surface magnetics (total field) on passage |
Magnetic measurements | Quantity: track kilometres = 548.192 Description: deep towed 3-component magnetometer on TOBI (see G72) |
Moorings, landers, buoys | |
Physical oceanography | |
Current meters | 26° 6' 0" N 44° 51' 0" W — current meters 500m and 800m above bottom recovered, laid Jan 1990 |
Current meters | 26° 8' 59" N 44° 49' 59" W — current meters 200m and 500m above bottom recovered, laid Jan 1990 |