RV G.O. Sars 2006117 (GS-06-146)
Cruise summary report
|Ship name (ship code)||RV G.O. Sars (58G2)|
|Cruise identifier||2006117 (GS-06-146)|
|Cruise period||2006-11-26 — 2006-12-02|
|Port of departure||Bergen, Norway|
|Port of return||Bergen, Norway|
|Objectives||The cruise was part of two projects: 'Punctuated disintegration of the NW European Ice Sheet and rapid climate change' (RAPID programme project) and 'Subsidence, uplift and tilting of traps - the influence on petroleum systems' (GLACIPET, under the Petromaks programme).
The RAPID programme project is a joint NFR/NERC scientific project. The marine geological objectives are to: a) Constrain the timing of Norwegian Channel Ice Stream (NCIS) events during the last glacial periods, b) Ascertain North Atlantic footprint of ice-rafted debris from the NCIS and assess correlations between NCIS events and known ocean and climate excursions, c) Reconstruct dimensions of the NCIS and estimate range of ice flux, d) Review evidence for major icedammed lakes, and compute their water volume and likely drainage routes, e) Compile geophysical and bathymetric data for the North Sea to develop the hypothesis of a grounded-ice break-up event and constrain its timing, and f) Estimate the ice volume involved, and likely melt water pathways to the North Atlantic.
The main objective of GLACIPET is to model the isostatic response of Cenozoic glaciations, sedimentation and erosion on the Norwegian continental shelf, and to
constrain consequences for petroleum systems. This objective will be met by the following subgoals, providing input to modelling: 1) More complete knowledge on timing and extent of
glaciations through the Plio-Pleistocene, 2) Improved understanding and quantification of
glacial depositional and erosional processes, 3) Expanded knowledge on the interaction
between the Fennoscandian, the Barents Sea, and the Kara Sea ice sheets, and their crustal influence through the last glacial cycle. Two contrasting areas is to be studied: the Barents Sea region, which is characterized by uplift through the late Cenozoic, and the northern North Sea, a region of late Cenozoic subsidence.
|Chief scientist||Atle Nygård (University of Bergen, Department of Earth Science)|
|Cruise report||(1.27 MB)|
|Track charts||(00 MB)|
|Geology and geophysics|
|Core - soft bottom||Quantity: number of cores = 3|
Description: Gravity corer
|Multi-beam echosounding||Quantity: number of profiles = 15|
Description: Kongsberg Simrad Multibeam echo sounder EM1002
|Other geological/geophysical measurements||Quantity: number of profiles = 24|
Description: TOPAS (Parametric Sub-bottom Profiler System)