Results 21 to 30 of about 423 (178)

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

Remote 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, Tejpal Singh, Anshuman Bhardwaj, Pawan K. Joshi, Andreas J. Dietz   +4 more
doaj   +1 more source

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

The 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, M. Kneib, E. S. Miles, P. Buri, S. Fugger, S. Fugger, M. McCarthy, T. E. Shaw, Z. Chuanxi, M. Truffer, M. J. Westoby, W. Yang, F. Pellicciotti, F. Pellicciotti   +13 more
doaj   +1 more source

Morphology and evolution of supraglacial hummocks on debris‐covered Himalayan glaciers [PDF]

Earth Surface Processes and Landforms, 2021
AbstractThick supraglacial debris layers often have an undulating, hummocky topography that influences the lateral transport of debris and meltwater and provides basins for supraglacial ponds. The role of ablation and other processes associated with supraglacial debris in giving rise to this hummocky topography is poorly understood.
Oliver T. Bartlett, Felix S.L. Ng, Ann V. Rowan   +2 more
openaire   +1 more source

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

Environmental 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, J F Steiner, P Buri, W W Immerzeel, F Pellicciotti   +4 more
doaj   +1 more source

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

Journal 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, Peter W. Nienow, Daniel N. Goldberg, Oliver Wigmore, Raúl A. Loayza-Muro, Jemma L. Wadham, Moya L. Macdonald, Robert G. Bingham   +7 more
doaj   +1 more source

Automated detection of ice cliffs within supraglacial debris cover [PDF]

The Cryosphere, 2017
Abstract. Ice cliffs within a supraglacial debris cover have been identified as a source for high ablation relative to the surrounding debris-covered area. Due to their small relative size and steep orientation, ice cliffs are difficult to detect using nadir-looking space borne sensors.
Herreid, Sam, Pellicciotti, Francesca
openaire   +3 more sources

Estimation of Supraglacial Dust and Debris Geochemical Composition via Satellite Reflectance and Emissivity

Remote Sensing, 2012
We demonstrate spectral estimation of supraglacial dust, debris, ash and tephra geochemical composition from glaciers and ice fields in Iceland, Nepal, New Zealand and Switzerland.
Kimberly Casey, Andreas Kääb
doaj   +1 more source

Brief communication: Supraglacial debris-cover changes in the Caucasus Mountains [PDF]

, 2019
Abstract. Debris cover on glaciers can significantly alter melt, and hence, glacier mass balance and runoff. Debris coverage typically increases with shrinking glaciers. Here, we present data on debris cover and its changes for 559 glaciers located in different regions of the Greater Caucasus mountains based on 1986, 2000 and 2014 Landsat and SPOT ...
Tielidze, Levan G, Bolch, Tobias, Wheate, Roger D, Kutuzov, Stanislav S, Lavrentiev, Ivan I, Zemp, Michael   +5 more
openaire   +1 more source

Interdecadal glacier inventories in the Karakoram since the 1990s [PDF]

Earth System Science Data, 2023
Multi-temporal glacier inventories provide key information about the glaciers, their characteristics, and changes and are inevitable for glacier modelling and investigating geodetic mass changes.
F. Xie, F. Xie, S. Liu, S. Liu, S. Liu, Y. Gao, Y. Gao, Y. Zhu, Y. Zhu, T. Bolch, A. Kääb, S. Duan, S. Duan, W. Miao, W. Miao, J. Kang, J. Kang, Y. Zhang, Y. Zhang, X. Pan, X. Pan, C. Qin, C. Qin, K. Wu, K. Wu, M. Qi, M. Qi, X. Zhang, X. Zhang, Y. Yi, Y. Yi, F. Han, F. Han, X. Yao, Q. Liu, X. Wang, Z. Jiang, D. Shangguan, Y. Zhang, R. Grünwald, M. Adnan, M. Adnan, J. Karki, J. Karki, M. Saifullah   +44 more
doaj   +1 more source

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

Frontiers 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, Manish Mehta, Aparna Shukla, Pankaj Chauhan, Kapil Kesarwani, Sandipan Mukherjee   +5 more
doaj   +1 more source