@booklet {Volpi2013, title = {{Late Neogene to Recent seafloor instability on the deep Pacific margin of the Antarctic Peninsula}}, year = {2013}, month = {mar}, publisher = {SEPM (Society for Sedimentary Geology)}, abstract = {17 pages, 12 figures, 1 table}, keywords = {Antarctic Peninsula, contourite sedimentation, Pacific margin, Slope instability}, isbn = {isbn: 978-1-56576-287-9}, url = {http://digital.csic.es/handle/10261/72631}, author = {Volpi, Valentina and Amblas, David and Camerlenghi, Angelo and Canals, Miquel and Rebesco, M. and Urgeles, Roger} } @article {Lucchi2013, title = {{Postglacial sedimentary processes on the Storfjorden and Kveithola trough mouth fans: Significance of extreme glacimarine sedimentation}}, journal = {Global and Planetary Change}, volume = {111}, year = {2013}, month = {dec}, pages = {309{\textendash}326}, abstract = {The depositional history of the Storfjorden and Kveithola trough-mouth fans (TMFs) in the northwestern Barents Sea has been investigated within two coordinated Spanish and Italian projects in the framework of the International Polar Year (IPY) Activity 367, NICE STREAMS. The investigation has been conducted using a multidisciplinary approach to the study of sediment cores positioned on high-resolution multibeam bathymetry and TOPAS/CHIRP sub-bottom profiles.Core correlation and the age model were based on 27 AMS 14C samples, rock magnetic parameters, lithofacies sequences, and the presence of marker beds including two oxidized layers marking the post Last Glacial Maximum (LGM) inception of deglaciation (OX-2) and the Younger Dryas cold climatic event (OX-1).Sediment facies analysis allowed the distinction of a number of depositional processes whose onset appears closely related to ice stream dynamics and oceanographic patterns in response to climate change. The glacigenic diamicton with low water content, high density, and high shear strength, deposited during glacial maxima, indicates ice streams grounded at the shelf edge. Massive release of IRD occurred at the inception of deglaciation in response to increased calving rates with possible outer ice streams lift off and collapse. The presence of a several-meter-thick sequence of interlaminated sediments deposited by subglacial outbursts of turbid meltwater (plumites) indicates rapid ice streams{\textquoteright} melting and retreat. Crudely-layered and heavily-bioturbated sediments were deposited by contour currents under climatic/environmental conditions favorable to bioproductivity.The extreme sedimentation rate of 3.4cma-1 calculated for the plumites from the upper-slope area indicates a massive, nearly instantaneous (less than 150years), terrigenous input corresponding to an outstanding meltwater event. We propose these interlaminated sediments to represent the high-latitude marine record of MeltWater Pulse 1a (MWP-1a). Different bathymetric and oceanographic conditions controlled locally the mode of glacial retreat, resulting in different thickness of plumites on the upper continental slope of the Storfjorden and Kveithola TMFs. It is possible that the southern part of Storfjorden TMF received additional sediments from the deglaciation of the neighboring Kveithola ice stream. {\textcopyright} 2013.}, keywords = {Barents Sea, Gullies, LGM, Meltwater plumes, MWP-1a, Sedimentary processes}, issn = {09218181}, doi = {10.1016/j.gloplacha.2013.10.008}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84887563264\&partnerID=tZOtx3y1}, author = {Lucchi, R.G. and Camerlenghi, A. and Rebesco, M. and Colmenero-Hidalgo, E. and Sierro, F.J. and Sagnotti, L. and Urgeles, R. and Melis, R. and Morigi, C. and B{\'a}rcena, M.-A. and Giorgetti, G. and Villa, G. and Persico, D. and Flores, J.-A. and Rigual-Hern{\'a}ndez, A.S. and Pedrosa, M.T. and Macri, P. and Caburlotto, A.} } @article {Pedrosa2011, title = {{Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea)}}, journal = {Marine Geology}, volume = {286}, number = {1-4}, year = {2011}, month = {aug}, pages = {65{\textendash}81}, abstract = {This study aims to present an overview of the seafloor morphology and shallow sedimentary structure of the Storfjorden and Kveithola Trough Mouth Fans (TMFs) on the northwestern Barents Sea continental margin. Data have been compiled from two International Polar Year (IPY) cruises (SVAIS, of the BIO Hesp{\'e}rides and EGLACOM of the R/V OGS-Explora) that yielded 15,340km2 of multi-beam bathymetry and 9500km of sub-bottom seismic profiles. In this area, the continental shelf edge defines three wide and subdued sedimentary lobes forming Storfjorden TMF, one single lobe on Kveithola TMF, and three inter-TMF areas on the continental slope. The two northernmost lobes of Storfjorden TMF (Lobes I and II) are composed by thick (up to 50m) sequences of glacially derived debris flow deposits interbedded with thin a few metres de-glacial and interglacial deposits. A network of upper slope gullies incises these debris flow deposits as a consequence of subglacial meltwater release at or near the shelf break. Gullies evolve into channels whose morphologic evidence disappears midslope, leaving place to a subdued chevron-like morphological pattern inherited by the preceeding glacial maximum debris flow deposits. A drastic change occurs on the continental slope of Storfjorden TMF Lobe III and Kveithola TMF, where are several translational submarine landslides mostly originated in the upper slope, the majority of which detach at the contact between Middle Weishelian glacigenic debris flows and the overlying acoustically laminated plumites. Dendritic canyon systems only develop in inter-TMF areas. The data suggest that TMF continental slope progradation depends on short-lived episodes of extreme sedimentation during glacial maxima and during the early deglaciation phase, and that an important controlling factor is the mechanism of ice stream retreat from the continental shelf edge. We suggest that the two northern Storfjorden sub-ice streams were composed of thicker and perhaps faster ice progressively draining a distal and larger ice source mainly located on Svalbard. Conversely, the southernmost Storfjorden sub-ice stream and the Kveithola ice stream were fed by a local, smaller marine-based ice dome grounded on Spitsbergenbanken. The ice dome persisted after the LGM, maintaining a local ice drainage system close to the shelf edge whose sedimentary evidence can be found on the continental slope of the southern lobe of Storfjorden TMF and Kveithola TMF. The high degree of lateral variability in the style of sedimentation on TMF slopes suggests that ice stream dynamics may vary considerably within the same glacial trough, and that such variability affects the long-term development of the architecture of TMFs. {\textcopyright} 2011 Elsevier B.V.}, keywords = {Barents Sea, Deglaciation, Glacial maximum, Paleo-ice streams, Storfjorden, Svalbard}, issn = {00253227}, doi = {10.1016/j.margeo.2011.05.009}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-80051568915\&partnerID=tZOtx3y1}, author = {Pedrosa, M.T. and Camerlenghi, A. and De Mol, B. and Urgeles, R. and Rebesco, M. and Lucchi, R.G.} }