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- 1992
RRS Challenger CH9/79
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Challenger (74CH) |
Cruise identifier | CH9/79 |
Cruise period | 1979-06-29 — 1979-07-11 |
Status | Completed |
Port of departure | Barry, United Kingdom |
Port of return | Barry, United Kingdom |
Purpose | Trials |
Objectives | 1. To test a new two-tier opening/closing epibenthic sledge.
2. To test the RMT 1+8 monitor and command systems at long slant ranges and particuarly at shallow angles. 3. To obtain benthic samples, with the semi-balloon otter trawl (OTSB) and epibenthic sledge (BN) at a variety of depths in the Porcupine Sea-Bight and particuarly at 2000 and 4000m for comparison with those taken at similar depths in April 1978 during Discovery Cruise 92. 4. To obtain near-bottom mid-water samples at a number of epibenthic sledge stations for evidence of concentration of mid-water organisms in this part of the water column. 5. To test a new acoustic "dolphin" and to examine the effects of changes in the orientation of the acoustic array in monitoring the towed gears and particuarly the RMT 1+8. |
Chief scientist | Anthony L Rice (Institute of Oceanographic Sciences Wormley Laboratory) |
Cruise report | (0.77 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Measurements | |
Biology and fisheries | |
Zooplankton | Quantity: number of samples = 11 |
Nekton | Quantity: number of samples = 22 |
Zoobenthos | Quantity: number of hauls = 17 Description: survey:taxonomy,energy tranfers,distribution |
Other biological/fisheries measurement | Quantity: number of image series = 11 Description: bottom photography |