Sperus 14/79 Leg 2
Cruise summary report
|Ship name (ship code)||Sperus (74TJ)|
|Cruise identifier||14/79 Leg 2|
|Cruise period||1979-07-23 — 1979-08-06|
|Port of departure||Lerwick, United Kingdom|
|Port of return||Lerwick, United Kingdom|
Project 14/79 was designed to provide regional geophysical coverage of the Foula, of the IGS 1:250,000 map series, on a N-S, E-W grid of lines at approximately 15km and 9km spacing. A number of gravity lines were also to be run over the Orkney sheet to complete gravity coverage in that area. In addition, some regional geophysical lines were to be surveyed on the Halibut Bank sheet after a study of the FLAGS pipeline route with the Huntec deep tow boomer.
S40 and S75 gravity meters run on all lines
All lines run with sparker and deep tow boomer systems.
Depths <300m the transit sonar was used.
|Chief scientist||A Dobinson (Institute of Geological Sciences, Edinburgh)|
|Cruise report||(9.09 MB)|
|Geology and geophysics|
|Single-beam echosounding||Quantity: number of surveys = 23|
|Long/short range side scan sonar||Quantity: number of surveys = 18|
|Seismic refraction||Quantity: number of surveys = 21|
Description: sparker, pinger
|Seismic refraction||Quantity: number of surveys = 14|
|Seismic refraction||Quantity: number of surveys = 8|
|Gravity measurements||Quantity: number of surveys = 23|
|Magnetic measurements||Quantity: number of surveys = 23|