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 |
