Results 91 to 100 of about 25,706 (259)

Stable water isotopes and the physical environment

Belgeo, 2002
This paper presents the characteristics of the fractionation of water isotopes which occurs during evaporation and freezing of water. It shows how these characteristics can be used for studying some aspects of the physical environment, namely ...
Roland Souchez, Réginald Lorrain, Jean-Louis Tison   +2 more
doaj   +1 more source

Survival of the Mýrdalsjökull ice cap through the Holocene thermal maximum: evidence from sulphur contents in Katla tephra layers (Iceland) from the last ∼8400 years [PDF]

, 2007
International audienceThe climate in Iceland was drier and warmer during the Holocene thermal maximum than it is today and it has been suggested that ice caps disappeared entirely. Katla, a volcano covered by the Mýrdalsjökull ice cap in southern Iceland,
Bergrun A. Oladottir, Björnsson, Björnsson, Gudrun Larsen, Jakobsson, Jóhannesson, Jóhannesson, Knudsen, Larsen, Larsen, Oladottir, Olgeir Sigmarsson, Smith, Sveinbjörnsdóttir, Thor Thordarson, Thorarinsson, Thordarson   +16 more
core   +4 more sources

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Can shrubs help to reconstruct historical glacier retreats?

Environmental Research Letters, 2012
In the 21st century, most of the world’s glaciers are expected to retreat due to further global warming. The range of this predicted retreat varies widely as a result of uncertainties in climate and glacier models.
Allan Buras, Martin Hallinger, Martin Wilmking   +2 more
doaj   +1 more source

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

Mapping Surface Flow Velocity of Glaciers at Regional Scale Using a Multiple Sensors Approach

Remote Sensing, 2019
We explore and compare the capabilities and limitations of different optical sensors (Sentinel-2/ESA, Landsat 7/8/USGS, Ven μ s/CNES-ISA, Pléiades/AirbusD&S and Planet Labs images) for mapping the surface speeds of mountain glaciers on ...
Romain Millan, Jérémie Mouginot, Antoine Rabatel, Seongsu Jeong, Diego Cusicanqui, Anna Derkacheva, Mondher Chekki   +6 more
doaj   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Glaciological Literature [PDF]

Journal of Glaciology, 1974
AbstractThis is a selected list of glaciologcal literature on the scientific study of snow and ice and of their effects on the Earth; for the literature on polar expeditions, and also on the “applied” aspects of glaciology, such as snow ploughs, readers should consult the bibliographies in each issue of Recent Polar Literature (supplement to the Polar ...
openaire   +1 more source

Surface oscillations in channeled snow flows

, 2007
An experimental device has been built to measure velocity profiles and friction laws in channeled snow flows. The measurements show that the velocity depends linearly on the vertical position in the flow and that the friction coefficient is a first-order
A. Bouchet, Bonamy, Bonamy, Bouchet, Bouchet, Casassa, Dent, Dent, Douady, Ericksson, Kern, Louge, M. Rastello, Naaim, Nishimura, Norem, Perla, Savage   +17 more
core   +3 more sources