Results 31 to 40 of about 3,473 (303)

Near-margin ice thickness and subglacial water routing, Leverett Glacier, Greenland

open access: yesArctic, Antarctic, and Alpine Research, 2018
Ice thickness measurements near the margin of the Greenland Ice Sheet (GrIS) are relatively sparse, presenting issues for modeling ice-flow dynamics, ice-sheet change, and subglacial hydrology.
Neil Ross   +4 more
doaj   +1 more source

Global Warming and Mass Extinctions Associated With Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 83-102., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
David P. G. Bond, Yadong Sun
wiley  

+3 more sources

Some knowledge on and parameters of China's alpine hydrology

open access: yesShui kexue jinzhan, 2014
Based on field data from the Hulu Watershed in the Qilian Mountains of China,five types of experiential parameters of alpine hydrology are calibrated: ① wind-induced factors of gauge-measured precipitation; ② threshold air temperature (day and half ...
CHEN Rensheng, KANG Ersi, DING Yongjian
doaj   +1 more source

Worldwide version-controlled database of glacier thickness observations [PDF]

open access: yesEarth System Science Data, 2020
Although worldwide inventories of glacier area have been coordinated internationally for several decades, a similar effort for glacier ice thicknesses was only initiated in 2013.
E. Welty   +19 more
doaj   +1 more source

An energy-balance model for debris-covered glaciers including heat conduction through the debris layer [PDF]

open access: yes, 2010
Extensive covers of supraglacial debris are often present in glacier ablation areas, and it is essential to assess exactly how the debris affects glacier melt rates.
Brock, B.W.   +5 more
core   +1 more source

The Importance of Solving Subglaciar Hydrology in Modeling Glacier Retreat: A Case Study of Hansbreen, Svalbard

open access: yesHydrology
Arctic tidewater glaciers are retreating, serving as key indicators of global warming. This study aims to assess how subglacial hydrology affects glacier front retreat by comparing two glacier–fjord models of the Hansbreen glacier: one incorporating a ...
Eva De Andrés   +3 more
doaj   +1 more source

Brief communication: Heterogenous thinning and subglacial lake activity on Thwaites Glacier, West Antarctica [PDF]

open access: yesThe Cryosphere, 2020
A system of subglacial lakes drained on Thwaites Glacier from 2012–2014. To improve coverage for subsequent drainage events, we extended the elevation and ice-velocity time series on Thwaites Glacier through austral winter 2019.
A. O. Hoffman   +4 more
doaj   +1 more source

Subsurface hydrology of an overdeepened cirque glacier [PDF]

open access: yesJournal of Glaciology, 2011
AbstractTo investigate the subsurface hydrological characteristics of an overdeepened cirque glacier, nine boreholes were drilled to the bed of West Washmawapta Glacier, British Columbia, Canada, in summer 2007. All holes were surveyed with a video camera, and four were subsequently instrumented with a combination of pressure transducers, thermistors ...
Christine F. Dow   +4 more
openaire   +1 more source

Hydrological controls on diurnal ice flow variability in valley glaciers [PDF]

open access: yes, 2005
This paper uses a combination of field data and three-dimensional modeling to investigate the spatial variability in basal conditions required to induce observed fluctuations in diurnal ice velocity at Haut Glacier d'Arolla, Switzerland.
Hubbard, A. L.   +6 more
core   +1 more source

Transient evolution of basal drag during glacier slip

open access: yesJournal of Glaciology, 2022
Glacier slip is usually described using steady-state sliding laws that relate drag, slip velocity and effective pressure, but where subglacial conditions vary rapidly transient effects may influence slip dynamics.
Lucas K. Zoet   +3 more
doaj   +1 more source

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