RRS Discovery D21
Cruise summary report
| Cruise Info. | |||||||||||||
| Ship name (ship code) | RRS Discovery (74E3) | ||||||||||||
| Cruise identifier | D21 | ||||||||||||
| Cruise period | 1968-01-14 — 1968-04-01 | ||||||||||||
| Status | Completed | ||||||||||||
| Port of departure | Plymouth, United Kingdom | ||||||||||||
| Port of return | Plymouth, United Kingdom | ||||||||||||
| Purpose | Research | ||||||||||||
| Objectives | Objectives
1. Continue investigations into the vertical distribution of zooplankton by a programme of day and night sampling with depth monitored opening/closing nets at a position far enough south to examine a fauna quite distinct from that examined at the Fuerteventura position. 2. Make observations at the Fuerteventura position at a different season of the year. 3. Try to discover the 'whereabouts of the faunal boundary between the 'southern' fauna and that found at Fuerteventura. 4. Make a preliminary survey of the upwelling regions of the NW African continental shelf to compare the vertical distribution of plankton in upwelling and nonupwelling areas. | ||||||||||||
| Chief scientist | Peter M David (National Institute of Oceanography) | ||||||||||||
| Cruise report |  (1.34 MB) | ||||||||||||
| Ocean/sea areas | |||||||||||||
| General | North East Atlantic Ocean (limit 40W) | ||||||||||||
| Specific | Northwest African continental shelf | ||||||||||||
| Track charts | (0.04 MB) | ||||||||||||
| Data held at BODC | |||||||||||||
| Series/Profiles | |||||||||||||
| 2 CTD/STD cast | Temperature of the water column Vertical spatial coordinates Salinity of the water column Temperature of the water column Vertical spatial coordinates Salinity of the water column
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