RRS Discovery D11
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D11 |
| Cruise period | 1966-04-15 — 1966-05-21 |
| Status | Completed |
| Port of departure | Plymouth, United Kingdom |
| Port of return | Plymouth, United Kingdom |
| Purpose | Research |
| Objectives | Main project for the first leg was to study the origin of the Bay of Biscay by mapping lineations in the magnetic and gravity fields, by exploring the buried basement using seismic profiling and by surveying and sampling two of the seamounts emerging from the abyssal plain.
Second Leg: to make seismic profiles across Gelicla Bank with a view to finding prominent strata which outcrop and which could be sampled. |
| Chief scientist | Anthony S Laughton (National Institute of Oceanography) |
| Cruise report |  (0.62 MB) |
| Ocean/sea areas | |
| General | Bay of Biscay |
| Specific | Bay of Biscay, |
| Track charts | (0.03 MB) |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of stations = 9 Description: Investigation into the relationship between thermal gradients in the bottom water and in the sediments. |
| Chemical oceanography | |
| Oxygen | Quantity: number of samples = 9 Description: oxygen and silicate concentrations measured on all water-bottle samples. |
| Silicate | Quantity: number of samples = 9 Description: oxygen and silicate concentrations measured on all water-bottle samples. |
| pH | Quantity: number of cores = 7 Description: pH measurements were made on seven of the cores collected. |
| Biology and fisheries | |
| Zooplankton | Quantity: number of stations = 12 Description: Planktonic foraminifera were collected between 0 and 300m using an N50 net. |
| Geology and geophysics | |
| Dredge | Quantity: number of hauls = 14 Description: Dredges. |
| Core - soft bottom | Quantity: number of cores = 26 Description: Twelve small gravity cores and fourteen long gravity cores. |
| Bottom photography | Quantity: number of stations = 4 |
| Single channel seismic reflection | Description: Seismic reflection profiling. |
