2026-05-28T06:49:16Zhttps://dataverse.no/oai

doi:10.18710/3DNZCM2025-11-07T02:00:07Zdataversenoearth_and_environmentalHarvesterDataverseNOuit

10.18710/3DNZCMPatton, HenryHenryPatton0000-0001-9670-611XUiT The Arctic University of NorwayAlexandropoulou, NikolitsaNikolitsaAlexandropoulou57224197373UiT The Arctic University of NorwayLasabuda, Amando P. E.Amando P. E.Lasabuda0000-0002-8980-3488UiT The Arctic University of NorwayKnies, JochenJochenKnies15025016200Norwegian Geological SurveyAndreassen, KarinKarinAndreassen0000-0002-9407-526XUiT The Arctic University of NorwayWinsborrow, MonicaMonicaWinsborrow0000-0001-5950-1254UiT The Arctic University of NorwayLaberg, Jan SverreJan SverreLaberg0000-0003-3917-4895UiT The Arctic University of NorwayHubbard, AlunAlunHubbard0000-0002-0503-3915UiT The Arctic University of NorwayDataverseNO2024Earth and Environmental Scienceslandscape evolutionpalaeo topographyBarents ShelfQuaternaryerosionPatton, HenryHenryPattonUiT The Arctic University of NorwayUiT The Arctic University of NorwayDept of Geosciences, UiT The Arctic University of NorwayUiT The Arctic University of Norway2024-08-282024-10-072024/2024experimental data10.1016/j.earscirev.2024.1049364017151552151556151556151556151556151556151556151556151556151556151557151557151557151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558151558text/plainapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdfapplication/x-netcdf1.1CC0 1.0This dataset contains a high-resolution palaeo-topography reconstruction of the Eurasian Arctic through the Quaternary (<2.74 Ma). NetCDF files of palaeo-topographies on 20 km grids are provided for each of the 47 major interglacials before the present day.<p></p><p><b>Article abstract</b>: Multiple ice age cycles spanning the last three million years have fundamentally transformed the Arctic landscape. The cadence, intensity and pattern of this glacial modification underpin the stability of Arctic geosystems over geologic time scales, including its hydrology, circulation patterns, slope stability, hydrocarbon fluid flow, geochemical/sediment cycling and nutrient supply. The Barents Shelf provides a unique arena to investigate long-term landscape evolution as it has undergone significant glacial modification during the Quaternary and has an extensive stratigraphic data repository motivated by decades of hydrocarbon seismic and well exploration. Here, we assimilate new geological datasets with ice sheet erosion modelling to incrementally reconstruct the geomorphic evolution of the Eurasian Arctic domain over each of the 47 glaciations since the intensification of Northern Hemisphere glaciation ~2.74 Ma. We utilise this time-transgressive framework to review hypotheses regarding the heterogenous development of the Barents Shelf and the timing of key topographic reconfiguration episodes. Our results demonstrate that up to 2.6 km of bedrock was glacially removed to the shelf margins, and though the mean rate of erosion declines over the Quaternary, the efficacy of glacial erosion has a more complex timeline. Initially, erosion was highly effective as large expanses of the Eurasian Arctic switched from subaerial exposure to marine conditions around 2 Ma ago. Thereafter, erosional efficacy decreased as the landscape desensitized to successive glaciations but, after 1 Ma, it increased as a dynamic, marine-based ice sheet drained by ice streams expanded, selectively eroding large outlet troughs to the shelf edge. Critically for Arctic climate, at ~0.69 Ma this episode of enhanced preferential erosion opened up the Barents Seaway establishing a new circulation pathway between the Atlantic and Arctic Oceans. Our 4D landscape reconstruction provides key boundary conditions for paleoclimate models and establishes a new framework for assessing the profound impact of late-Cenozoic glaciation on the Eurasian Arctic landscape.</p>QGIS, 3.34gFlex, 1.19017052-5The Research Council of Norway223259The Research Council of Norway332635EquinorAkademiaavtale UiT