Results 61 to 70 of about 22,928 (228)

Nematodes and rotifers on two Alpine debris-covered glaciers [PDF]

Italian Journal of Zoology, 2015
Debris-covered glaciers (DCGs) are glaciers whose ablation area is mostly covered by a continuous layer of debris, and are considered to be among the continental glacierized environments richest in life. DCG colonization by microorganisms, plants and animals, has been investigated in a few studies, while the meiofauna (metazoans smaller than 2 mm) of ...
R. S. Azzoni, A. Franzetti, D. Fontaneto, A. Zullini, R. Ambrosini   +4 more
openaire   +4 more sources

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source

Viscoelastic Modeling of Nocturnal Thermal Fracturing in a Himalayan Debris‐Covered Glacier

Journal of Geophysical Research: Earth Surface, 2019
Recent observations suggest that the nocturnal thermal fracturing of ice occurs at relatively warm temperatures (above −15 °C) at a high‐altitude Himalayan glacier system unless the ice is shielded by a debris mantle.
E. Podolskiy, K. Fujita, S. Sunako, Yota Sato   +3 more
semanticscholar   +1 more source

Unravelling the evolution of the Frébouge polygenetic cone in Val Ferret (Mont Blanc Massif)

Boreas, EarlyView.
Proglacial settings in the Alps are typically polygenetic, often characterized by a complex and discontinuous interplay between glacial, fluvial and gravitational processes. These processes yield high volumes of sediments, which usually exceed their transportation capacity.
Catharina Dieleman, Philip Deline, Susan Ivy Ochs, Patricia Hug, Jordan Aaron, Marcus  Christl, Naki Akçar   +6 more
wiley   +1 more source

Instruments and methods: hot-water borehole drilling at a high-elevation debris-covered glacier

Journal of Glaciology, 2019
While hot-water drilling is a well-established technique used to access the subsurface of ice masses, drilling into high-elevation (≳ 4000 m a.s.l.) debris-covered glaciers faces specific challenges. First, restricted transport capacity limits individual
K. Miles, E. Miles, B. Hubbard, D. Quincey, A. Rowan, Mark Pallett   +5 more
semanticscholar   +1 more source

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

Monitoring tropical debris-covered glacier dynamics from high-resolution unmanned aerial vehicle photogrammetry, Cordillera Blanca, Peru

, 2017
. The glaciers of the Cordillera Blanca, Peru, are rapidly retreating and thinning as a result of climate change, altering the timing, quantity and quality of water available to downstream users.
O. Wigmore, B. Mark
semanticscholar   +1 more source

Debris at the edge: sedimentological dynamics of Hintereisferner's evolving terminus and glacial forefield, Austrian Alps

Boreas, EarlyView.
The interaction between glaciers and the debris accumulating on their surfaces is critical as the Earth warms, with consequences for ice dynamics, hydrology and mass balance together with slope and sedimentary processes. Understanding this interaction is necessary since it influences ablation rates, sediment and meltwater pathways.
Paulina Mejías Osorio, Ricarda Wohlschlägl, Thomas M. Vandyk, Sara Karbacher, Bethan Joan Davies, Daniel Paul Le Heron   +5 more
wiley   +1 more source

Dynamics of debris-covered glaciers

, 2021
The presence of a supraglacial debris layer affects the melt of underlying ice which causes debris-covered glaciers to respond differently to climate forcing compared to clean-ice glaciers. To further complicate matters, supraglacial debris cover is not constant in time, but changes as a consequence of redistribution by ice flow, melt-out of englacial ...
openaire   +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