Results 1 to 10 of about 441 (165)

Geochemical characterization of supraglacial debris via in situ and optical remote sensing methods: a case study in Khumbu Himalaya, Nepal [PDF]

open access: yesThe Cryosphere, 2012
Surface glacier debris samples and field spectra were collected from the ablation zones of Nepal Himalaya Ngozumpa and Khumbu glaciers in November and December 2009.
K. A. Casey, A. Kääb, D. I. Benn
doaj   +1 more source

Seasonally stable temperature gradients through supraglacial debris in the Everest region of Nepal, Central Himalaya

open access: yesJournal of Glaciology, 2021
Rock debris covers ~30% of glacier ablation areas in the Central Himalaya and modifies the impact of atmospheric conditions on mass balance. The thermal properties of supraglacial debris are diurnally variable but remain poorly constrained for monsoon ...
Ann V. Rowan   +10 more
doaj   +1 more source

Understanding Complex Debris-Covered Glaciers: Concepts, Issues, and Research Directions

open access: yesFrontiers in Earth Science, 2021
Understanding the climate-glacier dynamics of debris-covered glaciers is notoriously difficult given a multitude of controlling factors and feedback mechanisms involving climate forcing, debris-load properties, supraglacial water bodies, and multi-scale ...
Da Huo   +2 more
doaj   +1 more source

Modelling steady states and the transient response of debris-covered glaciers [PDF]

open access: yesThe Cryosphere, 2021
Debris-covered glaciers are commonly found in alpine landscapes of high relief and play an increasingly important role in a warming climate. As a result of the insulating effect of supraglacial debris, their response to changes in climate is less direct ...
J. C. Ferguson, A. Vieli
doaj   +1 more source

Modelling debris transport within glaciers by advection in a full-Stokes ice flow model [PDF]

open access: yesThe Cryosphere, 2018
Glaciers with extensive surface debris cover respond differently to climate forcing than those without supraglacial debris. In order to include debris-covered glaciers in projections of glaciogenic runoff and sea level rise and to understand the ...
A. Wirbel, A. H. Jarosch, L. Nicholson
doaj   +1 more source

Automated Delineation of Supraglacial Debris Cover Using Deep Learning and Multisource Remote Sensing Data

open access: yesRemote Sensing, 2022
High-mountain glaciers can be covered with varying degrees of debris. Debris over glaciers (supraglacial debris) significantly alter glacier melt, velocity, ice geometry, and, thus, the overall response of glaciers towards climate change. The accumulated
Saurabh Kaushik   +4 more
doaj   +1 more source

Sub-seasonal variability of supraglacial ice cliff melt rates and associated processes from time-lapse photogrammetry [PDF]

open access: yesThe Cryosphere, 2022
Melt from supraglacial ice cliffs is an important contributor to the mass loss of debris-covered glaciers. However, ice cliff contribution is difficult to quantify as they are highly dynamic features, and the paucity of observations of melt rates and ...
M. Kneib   +13 more
doaj   +1 more source

Controls on the relative melt rates of debris-covered glacier surfaces

open access: yesEnvironmental Research Letters, 2022
Supraglacial debris covers 7% of mountain glacier area globally and generally reduces glacier surface melt. Enhanced energy absorption at ice cliffs and supraglacial ponds scattered across the debris surface leads these features to contribute ...
E S Miles   +4 more
doaj   +1 more source

Using thermal UAV imagery to model distributed debris thicknesses and sub-debris melt rates on debris-covered glaciers

open access: yesJournal of Glaciology, 2023
Supraglacial debris cover regulates the melt rates of many glaciers in mountainous regions around the world, thereby modifying the availability and quality of downstream water resources.
Rosie R. Bisset   +7 more
doaj   +1 more source

Supraglacial geomorphology of Companion Glacier, central Himalaya: evolution, controls and consequences

open access: yesFrontiers in Earth Science, 2023
Supraglacial debris cover greatly influences glacier dynamics. The present study combines field and remote sensing observations acquired between 2000 and 2020 to understand debris characteristics, area and terminus changes, surface velocity, and mass ...
Purushottam Kumar Garg   +5 more
doaj   +1 more source

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