seafloor morphology of the storfjorden and kveithola ... · seafloor morphology of the storfjorden...
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Seafloor Morphology of the Storfjorden and Kveithola Palaeo Ice Streams (NW BarentsKveithola Palaeo-Ice Streams (NW Barents
Sea): joint Italian and Spanish dataset
Michele Rebesco1, Angelo Camerlenghi2,3, Mayte Pedrosa3, Daniela Accettella1, Ben DeMol4, Roger Urgeles5, Renata Giulia Lucchi1,3, Andrea Caburlotto1
1) OGS, Trieste, Italy ([email protected])
3) Universitat de Barcelona, Spain( ebesco@ogs t este t)
2) Istitució Catalana de Recerca i Estudis Avançats,
4) Parc Científic, Barcelona, Spain
5) Consejo Superior de Investigaciones Científicas (CSIC),
Recerca i Estudis Avançats, Barcelona, Spain
Barcelona, Spain
Stockholm, 4 May 2011
IPY Activity 367 NICE-STREAMS(Neogene ice streams and sedimentary processes on high-latitude continental margins)(Neogene ice streams and sedimentary processes on high latitude continental margins)
http://sites.google.com/site/ipynicestreams/
R/V OGS E lR/V OGS-Explora
SVAIS
BIO HESPÉRIDES
SVAIS2007P.I. Angelo CamerlenghiC S
EGLACOM2008P.I. Michele Rebesco
IBCAO 2008
ICREA, SpainOGS, Italy
Rebesco et al., joint Italian and Spanish dataset
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Main Objective:Geologic- geophysical study of an ice-stream dominated d iti l t t t tdepositional system to reconstruct:-The evolution of this Arctic margin since the onset of glaciation (Pliocene) to the last deglaciation- Continental slope instability phenomena
Laberg et al, in prep.STRATAGEM, 2002
Rebesco et al., joint Italian and Spanish dataset
BIO Hespérides: Simrad EM120 (12 kHz) + EM1002S (95 kHz)(12 kHz) + EM1002S (95 kHz)
R/V OGS-Explora Reson MB8150 (12 kHz) + MB8111 (100 kHz)
Kveith
(12 kHz) + MB8111 (100 kHz)
About 15,340 km2 in total
Rebesco et al., joint Italian and Spanish dataset
Rebesco et al., joined Italian an Spanish datasetPedrosa et al., in press, Marine Geology
Multiple keel (?)Iceberg ploughingIceberg ploughing
Rebesco et al., joined Italian an Spanish datasetPedrosa et al., in press, Marine Geology
Canyons and landslideslandslides
Rebesco et al., joint Italian and Spanish datasetLucchi et al.; Rebesco et al., et al., in press, Springer
Kveithola Trough, Location map (Fig.1). A) Bathymetry of the Barents Sea (IBCAO). ) y y ( )B) Study area (Ottesen et al. (2006) + EGLACOM and SVAIS data.
The figures hereafter are taken from the paper that is presently being published in Marine Geology
Rebesco et al., joint Italian and Spanish datasetRebesco et al., et al., 2011, Marine Geology
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Kveithola Trough, swath bathymetryMega Scale Glacial Lineations (MSGL) overprinted by
transverse Grounding Zone Wedges (GZW)Fig. 3
transverse Grounding Zone Wedges (GZW)
Fig. 2
Rebesco et al., joint Italian and Spanish datasetRebesco et al., et al., 2011, Marine Geology
Multi-channel seismic reflection profile IT_EG-06: gross sub-bottom structure of the Kveithola Troughg g
Fig. 4
Rebesco et al., et al., 2011, Marine Geology
Rebesco et al., joint Italian and Spanish dataset
CHIRP profile IT_EG-60,sub bottom characteristics:sub-bottom characteristics: Unit 1 = homogeneous,Unit 2 = laminated,,Unit 3, transparent with MSGL and transverse (GZW) ridges
Fi 5Fig. 5
Rebesco et al., et al., 2011, Marine Geology
Rebesco et al., joint Italian and Spanish dataset
Close-up of CHIRP profiles IT_EG-53 and -60:sub-bottom details of the transparent wedge and of the p gsedimentary drape
Fig. 6
Fig 7Fig. 7
Rebesco et al., joint Italian and Spanish datasetRebesco et al., et al., 2011, Marine Geology
Interpretation:pThe series of transverse GZW ridges was produced during successive stillstandsproduced during successive stillstandsof an episodic deglaciation.
Rebesco et al., joint Italian and Spanish datasetRebesco et al., et al., 2011, Marine Geology
Future Cruises:
DEGLABAR Cruise for additionalfor additional bathymetric survey R/V HespéridesR/V Hespérides SIMRAD EM120EM1002SEM1002S
July 2012July 2012
Rebesco et al., joint Italian and Spanish dataset
CORIBAR proposal to German DFG for MeBoGerman DFG for MeBo Drilling on board R/V Maria S. MerianMaria S. Merian
SIMRAD EM 120 andSIMRAD EM 120 andEM1002
To be confirmed
Rebesco et al., joint Italian and Spanish dataset
http://sites.google.com/site/ipynicestreams/
Thanks for your attentionRebesco et al., joint Italian and Spanish dataset