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RRS Challenger CH6/76
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Challenger (74CH) |
Cruise identifier | CH6/76 |
Cruise period | 1976-04-14 — 1976-04-22 |
Status | Completed |
Port of departure | Aberdeen, United Kingdom |
Port of return | Aberdeen, United Kingdom |
Purpose | Research |
Objectives | The objective of this cruise was to participate in the JONSDAP expedition by:
(1) Recovery of instruments laid on cruise CH4A/76 to measure variations in tidal height at five stations and currents at two of these stations between NE Scotland and the Norwegian coast. One of the two current meter rigs was recovered, the other being lost following an encounter with a fishing vessel. All five tide gauges were successfully recovered. (2) Work an E-W CTD section along 59° 20 min N between the northern tip of the Orkneys and the Norwegian coast. Accomplished. (3) Measure surface temperature salinity using a continuous sampling unit along the CTD section. Accomplished. |
Chief scientist | Alan J Harrison (Institute of Oceanographic Sciences Bidston Laboratory) |
Project | JONSDAP 76 |
Cruise report | (0.61 MB) |
Ocean/sea areas | |
General | North Sea |
Specific | Northern North Sea |
Track charts | |
Measurements | |
Physical oceanography | |
Surface measurements underway (T,S) | Quantity: track kilometres = 1648.28 Description: Continuously logged temperature and salinity |
CTD stations | Quantity: number of profiles = 45 |
Moorings, landers, buoys | |
Physical oceanography | |
Current meters | 58° 37' 0" N 2° 25' 0" W — Station 53. Three current meters and bottom-mounted current meter/tide gauge deployed on CH4A/76 recovered |
Sea level (inc. bot. press., inverted echosounder) | 59° 19' 59" N 2° 45' 0" E — Station 56. Bottom mounted Mk II IOS tide gauge deployed on CH4A/76 recovered. |
Sea level (inc. bot. press., inverted echosounder) | 59° 19' 59" N 0° 15' 0" E — Station 55. Bottom mounted Mk II IOS tide gauge deployed on CH4A/76 recovered. |
Sea level (inc. bot. press., inverted echosounder) | 59° 19' 59" N 4° 30' 0" E — Station 57. Bottom mounted Mk I IOS tide gauge deployed on CH4A/76 recovered. |
Sea level (inc. bot. press., inverted echosounder) | 58° 37' 0" N 2° 25' 0" W — Station 53. Three current meters and bottom-mounted current meter/tide gauge deployed on CH4A/76 recovered |
Sea level (inc. bot. press., inverted echosounder) | 58° 57' 0" N 1° 15' 0" W — Station 54. Bottom mounted Mk II IOS tide gauge deployed on CH4A/76 recovered. Co-located current meter mooring lost. |