Results 21 to 30 of about 441 (165)

Pond Dynamics and Supraglacial-Englacial Connectivity on Debris-Covered Lirung Glacier, Nepal [PDF]

Frontiers in Earth Science, 2017
The hydrological systems of heavily-downwasted debris-covered glaciers differ from those of clean-ice glaciers due to the hummocky surface and debris mantle of such glaciers, leading to a relatively limited understanding of drainage pathways ...
Evan S. Miles, Evan S. Miles, Jakob Steiner, Jakob Steiner, Ian Willis, Pascal Buri, Walter W. Immerzeel, Anna Chesnokova, Anna Chesnokova, Francesca Pellicciotti, Francesca Pellicciotti   +10 more
doaj   +6 more sources

Microplastic contamination of supraglacial debris differs among glaciers with different anthropic pressures

Science of the Total Environment, 2022
Microplastic (MP) contamination is ubiquitous and widespread in terrestrial and aquatic ecosystems, including remote areas. However, information on the presence and distribution of MPs in high-mountain ecosystems, including glaciers, is still limited. The present study aimed at investigating presence, spatial distribution, and patterns of contamination
Crosta A., De Felice B., Antonioli D., Chiarcos R., Perin E., Ortenzi M. A., Gazzotti S., Azzoni R. S., Fugazza D., Gianotti V., Laus M., Diolaiuti G., Pittino F., Franzetti A., Ambrosini R., Parolini M.   +15 more
exaly   +6 more sources

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

Boreas
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
Paulina Mejías Osorio, Ricarda Wohlschlägl, Thomas M. Vandyk, Sara Karbacher, Bethan Joan Davies, Daniel Paul Le Heron   +5 more
doaj   +2 more sources

Applicability of Landsat 8 data for characterizing glacier facies and supraglacial debris

International Journal of Applied Earth Observation and Geoinformation, 2015
Abstract The present work evaluates the applicability of operational land imager (OLI) and thermal infrared sensor (TIRS) on-board Landsat 8 satellite. We demonstrate an algorithm for automated mapping of glacier facies and supraglacial debris using data collected in blue, near infrared (NIR), short wave infrared (SWIR) and thermal infrared (TIR ...
, Anshuman Bhardwaj, M K Singh
exaly   +2 more sources

Provenance and transport of supraglacial debris revealed by variations in debris geochemistry on Khumbu Glacier, Nepal Himalaya

Earth Surface Processes and Landforms, 2023
AbstractThe origin of supraglacial debris covers is often conceptualised as the formation of a surface lag by melt‐out of englacial debris from slow‐moving ice, where complexity arises from feedback between debris thickness and sub‐debris ice melt. Here, we examine the origin of a debris cover from the perspective of debris provenance and changing ...
Bryn Hubbard, Ann V Rowan, Martin Kirkbride   +2 more
exaly   +5 more sources

Quantifying Spatiotemporal Changes in Supraglacial Debris Cover in Eastern Pamir from 1994 to 2024 Based on the Google Earth Engine

Remote Sensing
Supraglacial debris cover considerably influences sub-debris ablation patterns and the surface morphology of glaciers by modulating the land–atmosphere energy exchange.
Fuming Xie, Zhen Zhang, Jing Ding
exaly   +3 more sources

Optimising NDWI supraglacial pond classification on Himalayan debris-covered glaciers [PDF]

Remote Sensing of Environment, 2018
The ability of medium-resolution (10–30 m) satellite imagery to delineate the size and persistence of ponds on debris-covered glaciers is a topic of recent interest as it has become apparent through the use of fine-resolution products that smaller ponds have often been neglected.
Evan Miles, Duncan Quincey, C Scott Watson   +2 more
exaly   +3 more sources

Surface composition of debris-covered glaciers across the Himalaya using linear spectral unmixing of Landsat 8 OLI imagery [PDF]

The Cryosphere, 2021
The Himalaya mountain range is characterized by highly glacierized, complex, dynamic topography. The ablation area of Himalayan glaciers often features a highly heterogeneous debris mantle comprising ponds, steep and shallow slopes of various aspects ...
A. E. Racoviteanu, L. Nicholson, N. F. Glasser   +2 more
doaj   +1 more source

Numerical Simulation of Supraglacial Debris Mobility: Implications for Ablation and Landform Genesis

Frontiers in Earth Science, 2021
Supraglacial debris does not remain fixed atop ablating ice, but can move across the ice surface as supraglacial topography evolves. This active debris movement (distinct from passive movement due to underlying ice motion) affects landform genesis as ...
Peter L. Moore
doaj   +1 more source

DERIVATION OF SUPRAGLACIAL DEBRIS COVER BY MACHINE LEARNING ALGORITHMS ON THE GEE PLATFORM: A CASE STUDY OF GLACIERS IN THE HUNZA VALLEY [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Calculating the spatial-temporal distribution of supraglacial debris cover on glaciers is essential for understanding mass balance processes, glacier lake outburst floods, hydrological predictions, and glacier fluctuations that have attracted attention ...
F. Xie, F. Xie, S. Liu, S. Liu, S. Liu, Y. Gao, Y. Gao, Y. Zhu, Y. Zhu, K. Wu, K. Wu, M. Qi, M. Qi, S. Duan, S. Duan, A. M. Tahir   +15 more
doaj   +1 more source