RV G.O. Sars 2005109 (GS140-05)
Cruise summary report
|Ship name (ship code)||RV G.O. Sars (58G2)|
|Cruise identifier||2005109 (GS140-05)|
|Cruise period||2005-06-30 — 2005-07-14|
|Port of departure||Unknown, Norway|
|Port of return||Unknown, Norway|
|Objectives||The marine geological survey to Nordfjord, Maloy Plateau, south Storegga Slide, North Sea Fan and the North Sea Plateau was carried out in co-operation between the University of Bergen, University of Sheffield and the Geological Survey of Norway. The cruise is a scientific contribution to three national/international research projects: SEDITRANS (NFR-project), EUROMARGIN (ESF-project) and RAPID (NFR/NERC-project).
The main fjord system and most of the tributary fjords were mapped with aid of EM1002. Along the track lines the TOPAS profiler (parametric sounder) was run successfully, frequently penetrating through more than 50 m of deposits with a resolution as high as 30 cm. A number of gravity cores were retrieved primarily to date the end moraine complexes.
Associated with the SEDITRANS project a survey on the Maloy Plateau was performed. The main objectives in this region was to map the outline of an end moraine ridge system (c. 13 14C ka) and to collect cores, some for radiocarbon dating of the ridge system.
For the EUROMARGIN project the cruise was dedicated to a detailed survey along a small pronounced headwall area along the southern part of the main headwall of the Storegga Slide. This area, named Storneset, has preserved a 20-30 m thick pile of laminated sediments deposited probably during the last deglaciation period. The survey is aimed to map in detail the geometry of a small Storegga Slide headwall area for better understanding of the headwall development.
3. RAPID CLIMATIC CHANGE
In this project we aim to establish the area, volume and history of the ice sheet over the North Sea and the NCIS during the last glacial maximum. This will provide the basis for modelling experiments, employing a state-of-the-art iceberg trajectory model, to examine the likely path of icebergs from this region of Europe, and their potential impact on North Atlantic convection processes, and hence the global thermohaline circulation.
|Chief scientist||Haflidi Haflidason (University of Bergen, Department of Earth Science)|
|Project||SEDITRANS, EUROMARGIN, RAPID|
|Coordinating body||NFR, ESF, NFR/NERC|
|Cruise report||(4.65 MB)|
|Specific||Nordfjod, Maloy Plateau, South Storegga Slide, North Sea Fan, North Sea Plateau and Hardangerfjorde|
|Track charts||(0.11 MB)|
|CTD stations||Quantity: number of profiles = 18|
Description: Seabird 911plus CTD
|Geology and geophysics|
|Core - soft bottom||Quantity: number of cores = 1|
Description: 'Calypso' corer
|Core - soft bottom||Quantity: number of cores = 15|
Description: Gravity corer
|Multi-beam echosounding||Quantity: number of profiles = 153|
Description: Kongsberg Simrad Multibeam echo sounder EM1002
|Other geological/geophysical measurements||Quantity: number of profiles = 225|
Description: Kongsberg TOPAS PS18 (Parametric Sub-bottom Profiler System)