RRS Shackleton S3/80 Leg 1
Cruise summary report
|Ship name (ship code)||RRS Shackleton (74SF)|
|Cruise identifier||S3/80 Leg 1|
|Cruise period||1980-04-21 — 1980-05-06|
|Port of departure||South Shields, United Kingdom|
|Port of return||Hull, United Kingdom|
|Objectives||To complete the geophysical survey of the Indefatigable and Spun sheets of the IGS 1:250 000 amp series in advance of a bottom sampling programme to be carried out by the Institute of Geological Sciences Marine Geology Unit later in the season, and to re-run several lines surveyed in 1979 on the Flemish Bight Sheet. The inshore limit of the survey was controlled by the 15m depth contour. A secondary objective was to run one line along a propsed pipeline route on the California Sheet.
Equipment trials were conducted. After the completion of the trial lines 1-8 were surveyed. Data quality was good despite poor weather.
|Chief scientist||A Dobinson (Institute of Geological Sciences, Edinburgh)|
|Cruise report||(0.70 MB)|
|Geology and geophysics|
|Single-beam echosounding||Quantity: number of track lines = 8|
Description: geophysical survey
|Long/short range side scan sonar||Quantity: track kilometres = 1824.22|
Description: "UDI" dual channel side scan system;2340nm Transit Sonar
|Single channel seismic reflection||Quantity: track kilometres = 4333.68|
|Seismic refraction||Quantity: track kilometres = 4183.668|
Description: Sparker;2286nm Airgun;1059nm Boomer Format 0 =seismic analogue paper record.
|Gravity measurements||Quantity: track kilometres = 4333.68|
|Magnetic measurements||Quantity: track kilometres = 4333.68|