Results 61 to 70 of about 99 (99)
Volcanically induced glacier collapses in southern Jan Mayen (Sør‐Jan), Norway
Boreas, EarlyView.A formerly unknown glacier totally covered with tephra was found in an area of Jan Mayen where no Holocene glaciation was known. This glacier and three others in the same area melted abruptly creating jökulhlaups due to volcanic activity impacting the glacier catchments at different times in the Holocene.
Eiliv Larsen +4 more
wiley +1 more source
Increased aeolian activity linked to Neoglacial cooling and glacier advance in southern Greenland
Boreas, EarlyView.Intense aeolian activity observed in the Igaliku Kujalleq records in S Greenland is not related to Norse activities. Instead, we suggest that changes in the North Atlantic atmospheric circulation pattern combined with Neoglacial glacier advances led to increased katabatic wind activity and triggered increased aeolian activity from large outwash plains.
Nicolaj K. Larsen +9 more
wiley +1 more source
Drivers of glacially induced fault reactivation in the Baltic Sea sector of the Tornquist Fan
Boreas, Volume 54, Issue 2, Page 220-245, April 2025.We analyse the effect of Quaternary glaciations on the complex tectonic pattern of the Baltic Sea sector of the Tornquist Fan. Using 2D marine reflection seismic data we determine the strike and dip angles of more than 40 potential glacially reactivated faults and calculated the Coulomb failure stress changes (ΔCFS) over the past 200 000 years.
Elisabeth Seidel +4 more
wiley +1 more source
Boreas, EarlyView.This study focuses on the deglaciation dynamics in the northeastern sector of the Iceland Ice Sheet, by investigating transverse ridges, together with glacifluvial and ice‐marginal landforms. The main emphasis is on the transverse ridges, which are primarily interpreted as ribbed moraines – the first to be described in Iceland.
Nína Aradóttir +5 more
wiley +1 more source
Boreas, Volume 54, Issue 2, Page 202-219, April 2025.We analysed the sediment record of Golzerensee, a mountain lake in Central Switzerland, to reconstruct past vegetation responses to climatic changes, human impact and fire for the last 14 550 years. Vegetation reacted sensitively to rapid climate warming, with closed forests establishing only decades after the onset of the Holocene.
Ursula Huonder +6 more
wiley +1 more source
Boreas, EarlyView.De Geer moraines may act as valuable ice‐marginal indicators; however, to date, their variable mode of formation has presented challenges for this utility. Here, we present sedimentological and ground penetrating radar data of DGMs located in southwest Finland.
Gwyneth E. Rivers +5 more
wiley +1 more source
An inventory of subglacial overdeepenings in southern Germany and Austria
Boreas, EarlyView.We present an inventory and morphometric characterization of >100 individual overdeepened basins in southern Germany and Austria compiled from heterogeneous sources. Arrangement and dimensions of overdeepenings are compared to those of their western Alpine counterparts, to catchment topographies and bedrock lithologies, and to modelled ice‐flow ...
Lukas Gegg +5 more
wiley +1 more source
Boreas, EarlyView.This study contains a comprehensive regional analysis of the orientations of tunnel valleys, faults and salt structures in the North German Basin, aiming to identify correlations that might indicate a structural control on tunnel‐valley formation. A structural control on tunnel‐valley formation has been repeatedly postulated and correlations have been ...
Jörg Lang +5 more
wiley +1 more source
Boreas, Volume 54, Issue 2, Page 246-257, April 2025.We offer new insights into the development of the Fennoscandian Ice Sheet during the Late Weichselian, by presenting OSL dates of ice marginal areas and incorporating our data into the latest models on ice sheet evolution. This paper investigates the time‐transgressive evolution of the Fennoscandian Ice Sheet (FIS) during the Late Weichselian ...
Nikolas Krauß +2 more
wiley +1 more source
Boreas, Volume 54, Issue 2, Page 179-201, April 2025.Mass accumulation rates (MARs) calculated from Bayesian age models range from 50 to 1922 g m−2 a−1 with a mean value of 317±35 g m−2 a−1. The glacial–interglacial changes of the MAR estimates only partially agree with the accepted dust deposition model, where high accumulation rates are observed during the cold glacial stages, while low values are ...
Zoran M. Perić +3 more
wiley +1 more source