Results 71 to 80 of about 23,309 (270)

Using Fine Sediment Monitoring to Quantify Sand Loading Over Time

River Research and Applications, EarlyView.
ABSTRACT Riverine sand loading can lead to geomorphic change, impacting river processes like lateral migration and vertical aggradation or degradation. Yet many sediment monitoring programs track only fine sediment measurable as total suspended solids (TSS). Here, we assess the ability for TSS data to be used to determine sand loading.
Andrew P. Kasun, Karen B. Gran
wiley   +1 more source

Velocity of Greenland's Helheim Glacier Controlled Both by Terminus Effects and Subglacial Hydrology With Distinct Realms of Influence

Geophysical Research Letters
Two outstanding questions for the future of the Greenland Ice Sheet are (a) how enhanced meltwater draining beneath the ice will impact the behavior of large tidewater glaciers, and (b) to what extent tidewater glacier velocity is driven by changes at ...
A. N. Sommers, C. R. Meyer, K. Poinar, J. Mejia, M. Morlighem, H. Rajaram, K. L. P. Warburton, W. Chu   +7 more
doaj   +1 more source

Glacier or not? The importance of nuance in definitions of vanishing glaciers

Annals of Glaciology
Glaciers provide critical ecosystem services, including water resources, biodiversity, cultural value and climate signals. But what makes a glacier a glacier? And when is a glacier no longer a glacier? Different glacier definitions can conflict.
Allen Pope
doaj   +1 more source

Crack wave resonances within the basal water layer

Annals of Glaciology, 2019
Hydraulic processes within and beneath glacial bodies exert a far-reaching control on ice flow through their influence on basal sliding. Within the subglacial system, rapid changes in these processes may excite resonances whose interpretation requires an
Dominik Gräff, Fabian Walter, Bradley P. Lipovsky   +2 more
doaj   +1 more source

Simultaneous drainage events from supraglacial lakes on the southern Inylchek Glacier, Central Asia

Journal of Glaciology, 2022
To understand the mechanism of simultaneous drainage event related to supraglacial lakes on a debris-covered glacier, we investigated water-level variations of supraglacial lakes on the southern Inylchek Glacier in Kyrgyzstan. To examine these variations,
Naoki Sakurai, Chiyuki Narama, Mirlan Daiyrov, Muhammed Esenamanov, Zarylbek Usekov, Hiroshi Inoue   +5 more
doaj   +1 more source

The spatial variation of Asian dust and marine aerosol contributions to glaciochemical signals in central Asia [PDF]

, 1992
Short-term (6 months to 17 years) glaciochemical records have been collected from several glacier basins in the mountains of central Asia. The spatial distribution of snow chemistry in central Asia is controlled by the influx of dust from the large ...
Mayewski, Paul A, Wake, Cameron P
core   +1 more source

Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet [PDF]

, 2011
Peer reviewedPublisher ...
Alley, Andrew Sole, Bartholomew, Box, Catania, Collins, Das, Douglas Mair, Fenn, Hock, Ian Bartholomew, Jemma Wadham, Kamb, McMillan, Nienow, Palmer, Parizek, Peter Nienow, Pfeffer, Pimentel, Schoof, Shepherd, Shreve, Skidmore, Steven Palmer, Sundal, Sundal, Swift, Thomas Cowton, Van de Wal, van der Veen, Zwally   +31 more
core   +4 more sources

Spatiotemporal Assessment of Groundwater Interactions With a Regulated River: A Case Study of the Nechako River, Canada

River Research and Applications, EarlyView.
ABSTRACT Regulated rivers represent complex hydrological systems where groundwater–surface water interactions are governed by natural conditions and human interventions. This study investigates the spatiotemporal dynamics of groundwater–surface water exchanges in the Nechako River, British Columbia (Canada), using numerical simulations.
Milad Fakhari, John Gray, Avery Dextrase, Andre St‐Hilaire, Richard Martel   +4 more
wiley   +1 more source

Advances in understanding subglacial meltwater drainage from past ice sheets

Annals of Glaciology, 2022
Meltwater drainage beneath ice sheets is a fundamental consideration for understanding ice–bed conditions and bed-modulated ice flow, with potential impacts on terminus behavior and ice-shelf mass balance.
Lauren M. Simkins, Sarah L. Greenwood, Monica C. M. Winsborrow, Lilja R. Bjarnadóttir, Allison P. Lepp   +4 more
doaj   +1 more source

Climatic control on the peak discharge of glacier outburst floods

, 2007
Lakes impounded by natural ice dams occur in many glacier regions. Their sudden emptying along subglacial paths can unleash similar to 1 km(3) of floodwater, but predicting the peak discharge of these subglacial outburst floods ('jokulhlaups') is ...
Liu, S., Mavlyudov, B., Ng, F.S.L., Wang, Y.   +3 more
core   +1 more source