RRS Challenger 2293H (CH104B)
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | 2293H (CH104B) |
| Cruise period | 1993-06-21 — 1993-07-05 |
| Status | Completed |
| Port of departure | Lerwick, United Kingdom |
| Port of return | Ullapool, United Kingdom |
| Purpose | Research |
| Objectives | 1. To investigate the horizontal distribution of sandeel shoals around Shetland and Fair Isle, including a detailed investigation of the region around Sumburgh. Sandeel distribution between Shetland and Lewis will also be investigated if time is available.
2. To investigate the relationship between seabird foraging patterns and the distribution of their prey. 3. To carry out a hydrographic and late larval survey between Shetland and Lewis. |
| Chief scientist | Peter J Wright (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory) |
| Cruise report |  (0.17 MB) |
| Ocean/sea areas | |
| General | North Sea North East Atlantic Ocean (limit 40W) |
| Specific | Shetland and Fair Isle |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: track kilometres = 1852 |
| CTD stations | Quantity: number of stations = 30 Description: and multisampler |
| Transparency (eg transmissometer) | Quantity: 30 |
| Chemical oceanography | |
| Oxygen | Quantity: 30 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: 30 |
| Birds | Quantity: activity duration in hours = 16 Description: seabird observation |
| Demersal fish | Quantity: number of hauls = 42 Description: trawls |
| Acoustic reflection on marine organisms. | Quantity: track kilometres = 833.4 Description: echosurvey |
| Geology and geophysics | |
| Grab | Quantity: number of samples = 40 |
