Results 61 to 70 of about 46,929 (244)

East Greenland ice core dust record reveals timing of Greenland ice sheet advance and retreat

Nature Communications, 2019
Accurate measurements of the past extent of the Greenland ice sheet are crucial to understand its response to changing climate conditions. Here, the authors present a dust record from an ice core from the east coast of Greenland to provide detailed time ...
Marius Folden Simonsen, Giovanni Baccolo, Thomas Blunier, Alejandra Borunda, Barbara Delmonte, Robert Frei, Steven Goldstein, Aslak Grinsted, Helle Astrid Kjær, Todd Sowers, Anders Svensson, Bo Vinther, Diana Vladimirova, Gisela Winckler, Mai Winstrup, Paul Vallelonga   +15 more
doaj   +1 more source

Late‐Holocene evolution of a small Sub‐Arctic glacier, Gljúfurárjökull (Tröllaskagi, northern Iceland)

Boreas, EarlyView.
Gljúfurárjökull, located on the Tröllaskagi Peninsula in northern Iceland, is a small glacier approximately 3.8 km in length. This study analyses the glacier's evolution through a combination of methods including: (i) geomorphological mapping, (ii) Cosmic‐Ray Exposure (CRE) dating, (iii) lichenometry and (iv) palaeoglacier reconstruction (volume ...
Nuria Andrés, José M. Fernández‐Fernández, David Palacios, Irene Schimmelpfennig, Leopoldo G. Sancho, Skafti Brynjólfsson, Þorsteinn Sæmundsson, Wesley R. Farnsworth, Luis M. Tanarro, Mariano Brito, Javier Santos‐González, Rosa B. González‐Gutiérrez, ASTER Team, Georges Aumaître, Karim Keddadouche   +14 more
wiley   +1 more source

Monitoring of the Greenland ice sheet using a broadband seismometer network: the GLISN project

Antarctic Record, 2014
Global climate change is currently causing melting of the Greenland ice sheet. Recently, a new type of seismic event, referred to as a "glacial earthquake", has been recognized.
Genti Toyokuni, Masaki Kanao, Yoko Tono, Tetsuto Himeno, Seiji Tsuboi, Dean Childs, Kent Anderson, Hiroshi Takenaka   +7 more
doaj   +1 more source

Short-term impacts of enhanced Greenland freshwater fluxes in an eddy-permitting ocean model [PDF]

, 2010
In a sensitivity experiment, an eddy-permitting ocean general circulation model is forced with realistic freshwater fluxes from the Greenland Ice Sheet, averaged for the period 1991–2000.
Aksenov, Y., Bamber, J.L., Coward, A.C., de Cuevas, B.A., Desbruyeres, D., Marsh, R.   +5 more
core   +6 more sources

Stratigraphic evidence for modern‐like glacier extents in south‐central Alaska within the last glacial period (MIS 3)

Boreas, EarlyView.
The last (Wisconsinan) glacial period was punctuated in North America by two glacial maxima, known as the Early and Late Wisconsinan glaciations. In Alaska, these maxima and their subsequent retreats have been the object of dating efforts to reconstruct local climatic events and compare them to global trends.
Bruno Belotti, Elizabeth J. Cassel, Timothy C. Bartholomaus, Michael G. Loso, Michael S. Christoffersen, John W. Holt   +5 more
wiley   +1 more source

Palaeolandscape reconstruction of a shallow coastal embayment in Kattegat, Denmark—influence of sea‐level changes during the latest Pleistocene and Holocene

Boreas, EarlyView.
We analyse the geological processes of a coastal embayment in the Kattegat. Using high‐resolution seismic data and sediment cores, we describe a geological evolution from glacial to shallow marine stages with a variety of preserved facies from different depositional settings, including glacio‐lacustrine, telmatic, limnic and coastal environments.
Katrine Juul Andresen, Lars Ole Boldreel, Ole Bennike, Christof Pearce, Mikkel Fruergaard, Verner Brandbyge Ernstsen, Aart Kroon, Nicole Rita Posth, Marit‐Solveig Seidenkrantz   +8 more
wiley   +1 more source

Microbial abundance in surface ice on the Greenland Ice Sheet [PDF]

Frontiers in Microbiology, 2015
Measuring microbial abundance in glacier ice and identifying its controls is essential for a better understanding and quantification of biogeochemical processes in glacial ecosystems. However, cell enumeration of glacier ice samples is challenging due to typically low cell numbers and the presence of interfering mineral particles. We quantified for the
Marek eStibal, Marek eStibal, Marek eStibal, Erkin eGözdereliler, Erkin eGözdereliler, Karen A. Cameron, Karen A. Cameron, Jason E. Box, Ian T. Stevens, Jarishma K. Gokul, Morten eSchostag, Jakub D. Zarsky, Jakub D. Zarsky, Arwyn eEdwards, Tristram D.L. Irvine-Fynn, Carsten Suhr Jacobsen, Carsten Suhr Jacobsen, Carsten Suhr Jacobsen   +17 more
openaire   +6 more sources

Flow‐pattern evolution of the Scandinavian Ice Sheet indicated by the subglacial lineation record over Norway, Sweden and Finland

Boreas, EarlyView.
We present a 25‐stage reconstruction of the ice‐flow pattern evolution of the Scandinavian Ice Sheet based on mapping and analysis of ~240 000 subglacial lineations and lineation fields across Norway, Sweden, Finland, and parts of NW Russia. Our reconstruction uses a glacial geomorphological inversion approach, in which we generated 611 individual ...
Frances E. G. Butcher, Anna L. C. Hughes, Helen E. Dulfer, Christopher D. Clark, Jeremy C. Ely, Emma L. M. Lewington, Benjamin M. Boyes, Alex C. Scoffield, Stephen Howcutt, Christiaan R. Diemont   +9 more
wiley   +1 more source

Does sea ice influence Greenland ice sheet surface-melt?

Environmental Research Letters, 2009
Recent decreases in Arctic sea ice and increases in Greenland ice sheet surface-melt may have global impacts, but the interactions between these two processes are unknown. Using microwave satellite data, we explore the spatial and temporal covariance of sea ice extent and ice sheet surface-melt around Greenland from 1979 to 2007. Significant covariance
Chu, V. W., Rennermalm, Asa K., Smith, Laurence C., Stroeve, Julienne C.   +3 more
openaire   +1 more source

MIS-11 duration key to disappearance of the Greenland ice sheet [PDF]

, 2017
Palaeo data suggest that Greenland must have been largely ice free during Marine Isotope Stage 11 (MIS-11). However, regional summer insolation anomalies were modest during this time compared to MIS-5e, when the Greenland ice sheet likely lost less ...
Calov, Reinhard, Ganopolski, Andrey, Montoya Redondo, María Luisa, Robinson, Alexander James, Álvarez Solas, Jorge   +4 more
core   +3 more sources