RRS Challenger CH16_1
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH16_1 |
| Cruise period | 1987-06-08 — 1987-06-22 |
| Status | Completed |
| Port of departure | Ardrossan, United Kingdom |
| Port of return | Tromsø, Norway |
| Purpose | Research |
| Objectives | 1. To investigate the distributions of phytoplankton, especially coccolithophorids, and relevant hydrographic properties (temperature, salinity, oxygen, inorganic nutrients, light penetration etc.) in the NE Atlantic Ocean (55-65° N, 01-21° W).
2. To make further measurements of biogenic sulphur compounds in surface oceanic waters and the marine atmosphere. 3. To make a preliminary investigation of the production of particulate organic and inorganic carbon in relation to the CO2 chemistry of surface waters. 4. To collect samples of glacial and post-glacial sediments for studies on sedimentation and geochemical processes. These were successfully achieved, with only minor losses of operational time due to poor weather and equipment failures. |
| Chief scientist | Patrick M Holligan (Marine Biological Association of the UK) |
| Cruise report |  (9.17 MB) |
| Ocean/sea areas | |
| General | Norwegian Sea North East Atlantic Ocean (limit 40W) |
| Specific | North Atlantic |
| Track charts | (0.34 MB) |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | |
| Bathythermograph | Quantity: number of profiles = 59 |
| Water bottle stations | Description: S surface only. |
| CTD stations | Quantity: number of profiles = 18 |
| Chemical oceanography | |
| Oxygen | |
| Nitrate | |
| Nitrite | |
| Silicate | |
| Alkalinity | |
| pH | |
| Other chemical oceanographic measurements | |
| Biology and fisheries | |
| Primary productivity | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of samples = 200 |
| Particulate organic matter (inc POC, PON) | Quantity: number of samples = 18 |
| Phytoplankton | Quantity: number of samples = 245 |
| Zooplankton | Quantity: number of samples = 9 Description: Identification, distribution. |
| Seston | |
| Geology and geophysics | |
| Core - soft bottom | Quantity: number of cores = 4 Description: chemical analysis |
| Bottom photography | Quantity: number of deployments = 3 |
