Cruise inventory

Sperus 15/79 Leg 2

Cruise summary report

Cruise Info. 
Ship name (ship code)Sperus (74TJ)
Cruise identifier15/79 Leg 2
Cruise period1979-08-20 — 1979-09-04
StatusCompleted
Port of departureFraserburgh, United Kingdom
Port of returnSunderland, United Kingdom
PurposeResearch
ObjectivesGeology

The aim of project 15/79 was completion of regional geophysical coverage of the Bosies Bank sheet, on a grid of NS-EW lines at approximately 10km by 10km spacing.

Completed survey of the Bosies Bank sheet with 1870km surveyed.
18 lines surveyed
S40 and S75 gravity meters
Deep tow boomer, sparker, transit sonar and watergun/airgun were run on all the lines.
Pinger results were inferior to the boomer except in good weather.
Chief scientistA Dobinson (Institute of Geological Sciences, Edinburgh)
Cruise reportSperus 15/79 Leg 2 cruise report sperus14and15_79.pdf — access key 'C' (9.09 MB) 
Ocean/sea areas 
GeneralNorth Sea
Measurements 
Geology and geophysics 
Single-beam echosoundingQuantity: number of surveys = 18
Description: 1870km surveyed
Long/short range side scan sonarQuantity: number of surveys = 18
Description: 1870km surveyed
Seismic refractionQuantity: number of surveys = 18
Description: 1870km surveyed
Seismic refractionQuantity: number of surveys = 6
Description: pinger
Seismic refractionQuantity: number of surveys = 18
Description: sparker;1319nm airgun;1131nm boomer, 1870km surveyed
Magnetic measurementsQuantity: number of surveys = 18
Description: 1870km surveyed