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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 |