Results 71 to 80 of about 2,018 (207)

Dispersal, source and glass chemistry of a third tephra unit within Iceland's Settlement Layer

Boreas, EarlyView.
Tephra layers may be studied to understand the dynamics and sequence of past explosive volcanism. In Iceland, the distinctive Settlement Layer (AD ~877) underlies almost all archaeological evidence for the Norse Settlement and is preserved in soils across Iceland and as cryptotephra overseas.
Conner A. G. Morison, GuÐrún Larsen, Anthony J. Newton, Andrew J. Dugmore   +3 more
wiley   +1 more source

Reconstructing the glacial history of Upgang, North Yorkshire: a North Sea ice lobe readvance during the termination of the last glacial maximum? [PDF]

, 2007
Around Great Britain at the end of the Last Glacial Maximum (LGM) there is evidence for a number of glacial readvances, specifically in the Irish Sea Basin and Eastern Scotland.
Lodwick, Jennifer
core  

Microbial nitrogen cycling on the Greenland Ice Sheet [PDF]

, 2012
Nitrogen inputs and microbial nitrogen cycling were investigated along a 79 km transect into the Greenland Ice Sheet (GrIS) during the main ablation season in summer 2010. The depletion of dissolved nitrate and production of ammonium (relative to icemelt)
J. Telling, C. Bellas, Wadham, J.L., Hodson, A, I. Nias, Wadham, Jemma L, Tranter, Martyn, J. Cook, M. Stibal, Telling, J., Bellas, Christopher M, A. Hodson, A. M. Anesio, Hodson, A., Cook, J, Sole, A, G. Lis, Nias, Isabel, Tranter, M., Lis, G., Stibal, M, P. Nienow, Anesio, A.M., Stibal, Marek, Nienow, P, Anesio, A. M., Cook, J., Tranter, M, Anesio, Alexandre M, Stibal, M., Telling, J, Bellas, C, Bellas, C., Wadham, JL, Telling, Jon P, Anesio, AM, M. Tranter, Lis, G, Sole, A., Cook, Joe, J. L. Wadham, A. Sole, Wadham, J. L., Nias, I, Nias, I., Nienow, P.   +45 more
core   +1 more source

Is erosion by deforming subglacial sediments significant? (Toward till continuity) [PDF]

, 1996
A glacier moving by deformation of subglacial sediments will tend to exhaust its own sediment supply, unless new sediment is generated subglacially. We explore the potential for deforming sediments to overcome this difficulty and replenish themselves by ...
Richard B. Alley, Kurt Cuffey
core   +3 more sources

Modelling subglacial fluvial sediment transport with a graph-based model, Graphical Subglacial Sediment Transport (GraphSSeT)

The Cryosphere
Abstract. A quantitative understanding of how sediment discharge from subglacial fluvial systems varies in response to glaciohydrological conditions is essential for understanding marine systems around Greenland and Antarctica and for interpreting sedimentary records of cryosphere evolution.
A. R. A. Aitken, A. R. A. Aitken, I. Delaney, G. Pirot, G. Pirot, M. A. Werder, M. A. Werder   +6 more
openaire   +5 more sources

Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments [PDF]

Microbial Ecology, 2017
The Watson River drains a portion of the SW Greenland ice sheet, transporting microbial communities from subglacial environments to a delta at the head of Søndre Strømfjord. This study investigates the potential activity and community shifts of glacial microbiota deposited and buried under layers of sediments within the river delta.
Cameron, Karen A., Stibal, Marek, Olsen, Nikoline S., Mikkelsen, Andreas B., Elberling, Bo, Jacobsen, Carsten S.   +5 more
openaire   +5 more sources

An examination of the Geochemical properties of late devensian glacigenic sediments in Eastern England [PDF]

, 2007
Onshore advance of the North Sea lobe of the Late Devensian British Ice Sheet the last glaciation resulted in the deposition of thick multiple till sequences along the coasts of east Yorkshire and north Lincolnshire.
Boston, Clare M.
core  

Potential Warming‐Induced Changes in Stream Water Sources Between Proglacial and Non‐Glacial Streams, South‐Central Alaska

Hydrological Processes, Volume 40, Issue 8, August 2026.
Land cover and elevation are shown to influence the proportion of stream source waters across glacial and non‐glacial streams. Groundwater makes up a large proportion of both early season and late season flow in most glacial and non‐glacial streams, while the timing of snow and ice melt is driven by the presence or absence of a glacier within the ...
H. K. Richardson, A. J. Bergstrom, J. C. Koch, Z. A. Frederick, J. B. Shanley, E. H. Baker   +5 more
wiley   +1 more source

Reconsideration of the Richardson Clay with subglacial defoming bed at an outcrop at the northern foot of Mt. Riiser-Larsen, West Enderby Land, East Antarctica

Antarctic Record, 2000
Outcrops bearing clayish stratified sediments at the northern foot of Mt. Riiser-Larsen, West Enderby Land, East Antarctica (named "Richardson Clay" by M. Hayashi, Proc. NIPR Symp. Antarct.
Kazuomi Hirakawa, Takanobu Sawagaki
doaj   +1 more source

Teleseismic S‐Wave Coda Autocorrelation and vp/vs ${v}_{p}/{v}_{s}$ Distribution Over the Antarctic Ice Sheet

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Accurate characterization of the compressional to shear (P‐to‐S) wave‐speed ratio (vp/vs ${v}_{p}/{v}_{s}$) within the Antarctic Ice Sheet (AIS) is crucial for understanding its internal structure, mechanical stability, and vulnerability to a changing climate.
Ammu Sanjayan, Thanh‐Son Phạm, Hrvoje Tkalčić   +2 more
wiley   +1 more source