Articles | Volume 16, issue 11
https://doi.org/10.5194/tc-16-4701-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-4701-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Nov 2022
Research article |
| 11 Nov 2022
| 11 Nov 2022
Sub-seasonal variability of supraglacial ice cliff melt rates and associated processes from time-lapse photogrammetry
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Institute of Environmental Engineering, ETH Zürich, Zurich,
8092, Switzerland
Evan S. Miles
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Pascal Buri
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Stefan Fugger
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Institute of Environmental Engineering, ETH Zürich, Zurich,
8092, Switzerland
Michael McCarthy
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Thomas E. Shaw
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Zhao Chuanxi
Key Laboratory of Tibetan Environment Changes and Land Surface
Processes, Institute of Tibetan Plateau Research, Chinese Academy of
Sciences, Beijing, 100045, China
Martin Truffer
Geophysical Institute, University of Alaska
Fairbanks, Fairbanks, AK 99775, USA
Matthew J. Westoby
Department of Geography and Environmental Sciences, Northumbria
University, Newcastle upon Tyne, NE1 8ST, UK
Wei Yang
Key Laboratory of Tibetan Environment Changes and Land Surface
Processes, Institute of Tibetan Plateau Research, Chinese Academy of
Sciences, Beijing, 100045, China
Francesca Pellicciotti
High Mountain Glaciers and Hydrology Group, Swiss Federal Institute,
WSL, Birmensdorf, 8903, Switzerland
Department of Geography and Environmental Sciences, Northumbria
University, Newcastle upon Tyne, NE1 8ST, UK
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Chuanxi Zhao, Wei Yang, Evan Miles, Matthew Westoby, Marin Kneib, Yongjie Wang, Zhen He, and Francesca Pellicciotti
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Wei Yang, Zhongyan Wang, Baosheng An, Yingying Chen, Chuanxi Zhao, Chenhui Li, Yongjie Wang, Weicai Wang, Jiule Li, Guangjian Wu, Lin Bai, Fan Zhang, and Tandong Yao
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He Sun, Tandong Yao, Fengge Su, Wei Yang, Guifeng Huang, and Deliang Chen
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2023-16, https://doi.org/10.5194/hess-2023-16, 2023
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Loris Compagno, Matthias Huss, Evan Stewart Miles, Michael James McCarthy, Harry Zekollari, Amaury Dehecq, Francesca Pellicciotti, and Daniel Farinotti
The Cryosphere, 16, 1697–1718, https://doi.org/10.5194/tc-16-1697-2022, https://doi.org/10.5194/tc-16-1697-2022, 2022
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Stefan Fugger, Catriona L. Fyffe, Simone Fatichi, Evan Miles, Michael McCarthy, Thomas E. Shaw, Baohong Ding, Wei Yang, Patrick Wagnon, Walter Immerzeel, Qiao Liu, and Francesca Pellicciotti
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The Cryosphere, 16, 1333–1340, https://doi.org/10.5194/tc-16-1333-2022, https://doi.org/10.5194/tc-16-1333-2022, 2022
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Christian T. Wild, Karen E. Alley, Atsuhiro Muto, Martin Truffer, Ted A. Scambos, and Erin C. Pettit
The Cryosphere, 16, 397–417, https://doi.org/10.5194/tc-16-397-2022, https://doi.org/10.5194/tc-16-397-2022, 2022
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Yan Zhong, Qiao Liu, Matthew Westoby, Yong Nie, Francesca Pellicciotti, Bo Zhang, Jialun Cai, Guoxiang Liu, Haijun Liao, and Xuyang Lu
Earth Surf. Dynam., 10, 23–42, https://doi.org/10.5194/esurf-10-23-2022, https://doi.org/10.5194/esurf-10-23-2022, 2022
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Slope failures exist in many paraglacial regions and are the main manifestation of the interaction between debris-covered glaciers and slopes. We mapped paraglacial slope failures (PSFs) along the Hailuogou Glacier (HLG), Mt. Gongga, southeastern Tibetan Plateau. We argue that the formation, evolution, and current status of these typical PSFs are generally related to glacier history and paraglacial geomorphological adjustments, and influenced by the fluctuation of climate conditions.
Andy Aschwanden, Timothy C. Bartholomaus, Douglas J. Brinkerhoff, and Martin Truffer
The Cryosphere, 15, 5705–5715, https://doi.org/10.5194/tc-15-5705-2021, https://doi.org/10.5194/tc-15-5705-2021, 2021
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Estimating how much ice loss from Greenland and Antarctica will contribute to sea level rise is of critical societal importance. However, our analysis shows that recent efforts are not trustworthy because the models fail at reproducing contemporary ice melt. Here we present a roadmap towards making more credible estimates of ice sheet melt.
Karen E. Alley, Christian T. Wild, Adrian Luckman, Ted A. Scambos, Martin Truffer, Erin C. Pettit, Atsuhiro Muto, Bruce Wallin, Marin Klinger, Tyler Sutterley, Sarah F. Child, Cyrus Hulen, Jan T. M. Lenaerts, Michelle Maclennan, Eric Keenan, and Devon Dunmire
The Cryosphere, 15, 5187–5203, https://doi.org/10.5194/tc-15-5187-2021, https://doi.org/10.5194/tc-15-5187-2021, 2021
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We present a 20-year, satellite-based record of velocity and thickness change on the Thwaites Eastern Ice Shelf (TEIS), the largest remaining floating extension of Thwaites Glacier (TG). TG holds the single greatest control on sea-level rise over the next few centuries, so it is important to understand changes on the TEIS, which controls much of TG's flow into the ocean. Our results suggest that the TEIS is progressively destabilizing and is likely to disintegrate over the next few decades.
Thomas E. Shaw, Wei Yang, Álvaro Ayala, Claudio Bravo, Chuanxi Zhao, and Francesca Pellicciotti
The Cryosphere, 15, 595–614, https://doi.org/10.5194/tc-15-595-2021, https://doi.org/10.5194/tc-15-595-2021, 2021
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Near surface air temperature (Ta) is important for simulating the melting of glaciers, though its variability in space and time on mountain glaciers is still poorly understood. We combine new Ta observations on glacier in Tibet with several glacier datasets around the world to explore the applicability of an existing method to estimate glacier Ta based upon glacier flow distance. We make a first step at generalising a method and highlight the remaining unknowns for this field of research.
Leif S. Anderson, William H. Armstrong, Robert S. Anderson, and Pascal Buri
The Cryosphere, 15, 265–282, https://doi.org/10.5194/tc-15-265-2021, https://doi.org/10.5194/tc-15-265-2021, 2021
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Many glaciers are thinning rapidly beneath debris cover (loose rock) that reduces melt, including Kennicott Glacier in Alaska. This contradiction has been explained by melt hotspots, such as ice cliffs, scattered within the debris cover. However, at Kennicott Glacier declining ice flow explains the rapid thinning. Through this study, Kennicott Glacier is now the first glacier in Alaska, and the largest glacier globally, where melt across its debris-covered tongue has been rigorously quantified.
Yanbin Lei, Tandong Yao, Lide Tian, Yongwei Sheng, Lazhu, Jingjuan Liao, Huabiao Zhao, Wei Yang, Kun Yang, Etienne Berthier, Fanny Brun, Yang Gao, Meilin Zhu, and Guangjian Wu
The Cryosphere, 15, 199–214, https://doi.org/10.5194/tc-15-199-2021, https://doi.org/10.5194/tc-15-199-2021, 2021
Short summary
Short summary
Two glaciers in the Aru range, western Tibetan Plateau (TP), collapsed suddenly on 17 July and 21 September 2016, respectively, causing fatal damage to local people and their livestock. The impact of the glacier collapses on the two downstream lakes (i.e., Aru Co and Memar Co) is investigated in terms of lake morphology, water level and water temperature. Our results provide a baseline in understanding the future lake response to glacier melting on the TP under a warming climate.
Cited articles
Anderson, L. S., Armstrong, W. H., Anderson, R. S., and Buri, P.: Debris cover and the thinning of Kennicott Glacier, Alaska: in situ measurements, automated ice cliff delineation and distributed melt estimates, The Cryosphere, 15, 265–282, https://doi.org/10.5194/tc-15-265-2021, 2021.
Armstrong, L., Lacelle, D., Fraser, R. H., Kokelj, S., and Knudby, A.: Thaw
slump activity measured using stationary cameras in time-lapse and
Structure-from-Motion photogrammetry, Antarct. Sci., 4, 827–845,
https://doi.org/10.1139/as-2018-0016, 2018.
Bartlett, O. T., Ng, F. S. L., and Rowan, A. V.: Morphology and evolution of
supraglacial hummocks on debris-covered Himalayan glaciers, Earth Surf.
Proc. Land., 46, esp.5043, https://doi.org/10.1002/esp.5043, 2020.
Beyer, R. A., Alexandrov, O., and McMichael, S.: The Ames Stereo Pipeline:
NASA's Open Source Software for Deriving and Processing Terrain Data, Earth
Sp. Sci., 5, 537–548, https://doi.org/10.1029/2018EA000409, 2018.
Bonekamp, P. N. J., van Heerwaarden, C. C., Steiner, J. F., and Immerzeel, W. W.: Using 3D turbulence-resolving simulations to understand the impact of surface properties on the energy balance of a debris-covered glacier, The Cryosphere, 14, 1611–1632, https://doi.org/10.5194/tc-14-1611-2020, 2020.
Brun, F., Buri, P., Miles, E. S., Wagnon, P., Steiner, J., Berthier, E.,
Ragettli, S., Kraaijenbrink, P., Immerzeel, W. W., and Pellicciotti, F.:
Quantifying volume loss from ice cliffs on debris-covered glaciers using
high-resolution terrestrial and aerial photogrammetry, J. Glaciol., 62, 684–695,
https://doi.org/10.1017/jog.2016.54, 2016.
Brun, F., Wagnon, P., Berthier, E., Shea, J. M., Immerzeel, W. W., Kraaijenbrink, P. D. A., Vincent, C., Reverchon, C., Shrestha, D., and Arnaud, Y.: Ice cliff contribution to the tongue-wide ablation of Changri Nup Glacier, Nepal, central Himalaya, The Cryosphere, 12, 3439–3457, https://doi.org/10.5194/tc-12-3439-2018, 2018.
Buri, P. and Pellicciotti, F.: Aspect controls the survival of ice cliffs on
debris-covered glaciers, P. Natl. Acad. Sci. USA, 115, 4369–4374,
https://doi.org/10.1073/pnas.1713892115, 2018.
Buri, P., Pellicciotti, F., Steiner, J. F., Miles, E. S., and Immerzeel, W.
W.: A grid-based model of backwasting of supraglacial ice cliffs on
debris-covered glaciers, Ann. Glaciol., 57, 199–211,
https://doi.org/10.3189/2016AoG71A059, 2016a.
Buri, P., Miles, E. S., Steiner, J. F., Immerzeel, W. W., Wagnon, P., and
Pellicciotti, F.: A physically based 3-D model of ice cliff evolution over
debris-covered glaciers, J. Geophys. Res.-Earth, 121, 2471–2493,
https://doi.org/10.1002/2016JF004039, 2016b.
Buri, P., Miles, E. S., Steiner, J. F., Ragettli, S., and Pellicciotti, F.:
Supraglacial Ice Cliffs Can Substantially Increase the Mass Loss of
Debris-Covered Glaciers, Geophys. Res. Lett., 48, e2020GL092150,
https://doi.org/10.1029/2020GL092150, 2021.
Corripio, J. G.: Snow surface albedo estimation using terrestrial
photography, Int. J. Remote Sens., 25, 5705–5729,
https://doi.org/10.1080/01431160410001709002, 2004.
Falaschi, D., Rivera, A., Lo Vecchio Repetto, A., Moragues, S., Villalba,
R., Rastner, P., Zeller, J., and Salcedo, A. P.: Evolution of Surface
Characteristics of Three Debris-Covered Glaciers in the Patagonian Andes
From 1958 to 2020, Front. Earth Sci., 9,
https://doi.org/10.3389/feart.2021.671854, 2021.
Farinotti, D., Huss, M., Fürst, J. J., Landmann, J., Machguth, H.,
Maussion, F., and Pandit, A.: A consensus estimate for the ice thickness
distribution of all glaciers on Earth, Nat. Geosci., 12, 168–173,
https://doi.org/10.1038/s41561-019-0300-3, 2019.
Ferguson, J. C. and Vieli, A.: Modelling steady states and the transient response of debris-covered glaciers, The Cryosphere, 15, 3377–3399, https://doi.org/10.5194/tc-15-3377-2021, 2021.
Filhol, S., Perret, A., Girod, L., Sutter, G., Schuler, T. V., and Burkhart,
J. F.: Time-Lapse Photogrammetry of Distributed Snow Depth During Snowmelt,
Water Resour. Res., 55, 7916–7926, https://doi.org/10.1029/2018WR024530,
2019.
Fugger, S., Fyffe, C. L., Fatichi, S., Miles, E., McCarthy, M., Shaw, T. E., Ding, B., Yang, W., Wagnon, P., Immerzeel, W., Liu, Q., and Pellicciotti, F.: Understanding monsoon controls on the energy and mass balance of glaciers in the Central and Eastern Himalaya, The Cryosphere, 16, 1631–1652, https://doi.org/10.5194/tc-16-1631-2022, 2022.
Fyffe, C. L., Woodget, A. S., Kirkbride, M. P., Deline, P., Westoby, M. J.,
and Brock, B. W.: Processes at the margins of supraglacial debris-cover:
Quantifying dirty ice ablation and debris redistribution, Earth Surf.
Proc. Land., 45, 2272–2290, https://doi.org/10.1002/esp.4879, 2020.
Gardelle, J., Berthier, E., Arnaud, Y., and Kääb, A.: Region-wide glacier mass balances over the Pamir-Karakoram-Himalaya during 1999–2011, The Cryosphere, 7, 1263–1286, https://doi.org/10.5194/tc-7-1263-2013, 2013.
GlaThiDa Consortium: Glacier Thickness Database 3.1.0, World Glacier Monitoring Service, Zurich, Switzerland [data set], https://doi.org/10.5904/wgms-glathida-2020-10, 2020.
Han, H., Wang, J., Wei, J., and Liu, S.: Backwasting rate on debris-covered
Koxkar glacier, Tuomuer mountain, China, J. Glaciol., 56, 287–296,
https://doi.org/10.3189/002214310791968430, 2010.
Herreid, S. and Pellicciotti, F.: Automated detection of ice cliffs within supraglacial debris-cover, The Cryosphere, 12, 1811–1829, https://doi.org/10.5194/tc-12-1811-2018, 2018.
Huss, M., Sugiyama, S., Bauder, A., and Funk, M.: Retreat Scenarios of
Unteraargletscher, Switzerland, Using a Combined Ice-Flow Mass-Balance
Model, Arct. Antarct. Alp. Res., 39, 422–431, 2007.
Immerzeel, W. W., Kraaijenbrink, P. D. A., Shea, J. M., Shrestha, A. B.,
Pellicciotti, F., Bierkens, M. F. P., and De Jong, S. M.: High-resolution
monitoring of Himalayan glacier dynamics using unmanned aerial vehicles,
Remote Sens. Environ., 150, 93–103,
https://doi.org/10.1016/j.rse.2014.04.025, 2014.
James, M. R. and Robson, S.: Mitigating systematic error in topographic
models derived from UAV and ground-based image networks, Earth Surf.
Proc. Land., 39, 1413–1420, https://doi.org/10.1002/esp.3609, 2014a.
James, M. R. and Robson, S.: Sequential digital elevation models of active
lava flows from ground-based stereo time-lapse imagery, ISPRS J. Photogramm., 97, 160–170, https://doi.org/10.1016/j.isprsjprs.2014.08.011,
2014b.
Jouberton, A., Shaw, T. E., Miles, E., McCarthy, M., Fugger, S., Ren, S., Dehecq, A., Yang, W., and Pellicciotti, F.: Warming-induced monsoon precipitation phase change intensifies glacier mass loss in the southeastern Tibetan Plateau, P. Natl. Acad. Sci. USA, 119, e2109796119, https://doi.org/10.1073/pnas.2109796119, 2022.
Juen, M., Mayer, C., Lambrecht, A., Han, H., and Liu, S.: Impact of varying debris-cover thickness on ablation: a case study for Koxkar Glacier in the Tien Shan, The Cryosphere, 8, 377–386, https://doi.org/10.5194/tc-8-377-2014, 2014.
King, O., Turner, A. G. D., Quincey, D. J., and Carrivick, J. L.:
Morphometric evolution of Everest region debris-covered glaciers, 371,
107422, https://doi.org/10.1016/j.geomorph.2020.107422, 2020.
Kneib, M., Miles, E. S., Jola, S., Buri, P., Herreid, S., Bhattacharya, A.,
Watson, C. S., Bolch, T., Quincey, D., and Pellicciotti, F.: Mapping ice
cliffs on debris-covered glaciers using multispectral satellite images,
Remote Sens. Environ., 253, 112201, https://doi.org/10.1016/j.rse.2020.112201,
2020.
Kneib, M., Miles, E. S., Buri, P., Molnar, P., McCarthy, M., Fugger, S., and
Pellicciotti, F.: Interannual Dynamics of Ice Cliff Populations on
Debris-Covered Glaciers from Remote Sensing Observations and Stochastic
Modeling, J. Geophys. Res.-Earth, 126, e2021JF006179,
https://doi.org/10.1029/2021JF006179, 2021.
Kneib, M., Miles, E. S., Buri, P., Fugger, S., McCarthy, M., Shaw, T. E., Chuanxi, Z., Truffer, M., Westoby, M. J., Yang, W., and Pellicciotti, F.: Data and scripts for “Sub-seasonal variability of supraglacial ice cliff melt rates and associated processes from time-lapse photogrammetry”, Zenodo [data set and code], https://doi.org/10.5281/zenodo.7044364, 2022.
Kraaijenbrink, P. D. A., Shea, J. M., Pellicciotti, F., De Jong, S. M., and
Immerzeel, W. W.: Object-based analysis of unmanned aerial vehicle imagery
to map and characterise surface features on a debris-covered glacier, Remote
Sens. Environ., 186, 581–595, https://doi.org/10.1016/j.rse.2016.09.013,
2016.
Lague, D., Brodu, N., and Leroux, J.:
Accurate 3D comparison of complex topography with terrestrial laser scanner: Application to the Rangitikei canyon (N-Z),
ISPRS J. Photogram. Remote Sens.,
82,
10–26, https://doi.org/10.1016/j.isprsjprs.2013.04.009,
2013.
Mallalieu, J., Carrivick, J. L., Quincey, D. J., Smith, M. W., and James, W.
H. M.: An integrated Structure-from-Motion and time-lapse technique for
quantifying ice-margin dynamics, J. Glaciol., 63, 937–949,
https://doi.org/10.1017/jog.2017.48, 2017.
McCarthy, M., Miles, E., Kneib, M., Buri, P., Fugger, S., and Pellicciotti, F.: Supraglacial debris thickness and supply rate in High-Mountain Asia, Commun. Earth Environ., 3, 269, https://doi.org/10.1038/s43247-022-00588-2, 2022.
Messerli, A. and Grinsted, A.: Image georectification and feature tracking toolbox: ImGRAFT, Geosci. Instrum. Method. Data Syst., 4, 23–34, https://doi.org/10.5194/gi-4-23-2015, 2015.
Miles, E., McCarthy, M., Dehecq, A., Kneib, M., Fugger, S., and
Pellicciotti, F.: Health and sustainability of glaciers in High Mountain
Asia, Nat. Commun., 121, 1–10,
https://doi.org/10.1038/s41467-021-23073-4, 2021.
Miles, E. S., Pellicciotti, F., Willis, I. C., Steiner, J. F., Buri, P., and
Arnold, N. S.: Refined energy-balance modelling of a supraglacial pond,
Langtang Khola, Nepal, Ann. Glaciol., 57, 29–40, https://doi.org/10.3189/2016AoG71A421,
2016.
Miles, E. S., Steiner, J. F., and Brun, F.: Highly variable aerodynamic
roughness length (z0) for a hummocky debris-covered glacier, J. Geophys.
Res.-Atmos., 122, 8447–8466, https://doi.org/10.1002/2017JD026510, 2017a.
Miles, E. S., Willis, I. C., Arnold, N. S., Steiner, J., and Pellicciotti,
F.: Spatial, seasonal and interannual variability of supraglacial ponds in
the Langtang Valley of Nepal, 1999–2013, J. Glaciol., 63, 88–105,
https://doi.org/10.1017/jog.2016.120, 2017b.
Miles, E. S., Willis, I., Buri, P., Steiner, J. F., Arnold, N. S., and
Pellicciotti, F.: Surface Pond Energy Absorption Across Four Himalayan
Glaciers Accounts for 1/8 of Total Catchment Ice Loss, Geophys. Res. Lett.,
45, 10464–10473, https://doi.org/10.1029/2018GL079678, 2018.
Mishra, N. B., Miles, E. S., Chaudhuri, G., Mainali, K. P., Mal, S., Singh,
P. B., and Tiruwa, B.: Quantifying heterogeneous monsoonal melt on a
debris-covered glacier in Nepal Himalaya using repeat uncrewed aerial system
(UAS) photogrammetry, J. Glaciol., 68, 288–304,
https://doi.org/10.1017/JOG.2021.96, 2021.
Mölg, N., Bolch, T., Walter, A., and Vieli, A.: Unravelling the evolution of Zmuttgletscher and its debris cover since the end of the Little Ice Age, The Cryosphere, 13, 1889–1909, https://doi.org/10.5194/tc-13-1889-2019, 2019.
Mölg, N., Ferguson, J., Bolch, T., and Vieli, A.: On the influence of
debris cover on glacier morphology: How high-relief structures evolve from
smooth surfaces, Geomorphology, 357, 107092,
https://doi.org/10.1016/j.geomorph.2020.107092, 2020.
Moore, P. L.: Stability of supraglacial debris, Earth Surf. Proc.
Land., 43, 285–297, https://doi.org/10.1002/esp.4244, 2018.
Moore, P. L.: Numerical Simulation of Supraglacial Debris Mobility:
Implications for Ablation and Landform Genesis, Front. Earth Sci., 9,
https://doi.org/10.3389/feart.2021.710131, 2021.
Nicholson, L. and Benn, D. I.: Calculating ice melt beneath a debris layer
using meteorological data, J. Glaciol., 52, 463–470,
https://doi.org/10.3189/172756506781828584, 2006.
Nicholson, L. I., McCarthy, M., Pritchard, H. D., and Willis, I.: Supraglacial debris thickness variability: impact on ablation and relation to terrain properties, The Cryosphere, 12, 3719–3734, https://doi.org/10.5194/tc-12-3719-2018, 2018.
Nuth, C. and Kääb, A.: Co-registration and bias corrections of satellite elevation data sets for quantifying glacier thickness change, The Cryosphere, 5, 271–290, https://doi.org/10.5194/tc-5-271-2011, 2011.
Ostrem, G.: Ice Melting under a Thin Layer of Moraine, and the Existence of
Ice Cores in Moraine Ridges, Geogr. Ann., 41, 228–230,
https://doi.org/10.1080/20014422.1959.11907953, 1959.
Pellicciotti, F., Stephan, C., Miles, E. S., Herreid, S., Immerzeel, W. W.,
and Bolch, T.: Mass-balance changes of the debris-covered glaciers in the
Langtang Himal, Nepal, from 1974 to 1999, J. Glaciol., 61, 373–386,
https://doi.org/10.3189/2015JoG13J237, 2015.
Pritchard, H. D., King, E. C., Goodger, D. J., McCarthy, M., Mayer, C., and
Kayastha, R.: Towards Bedmap Himalayas: development of an airborne
ice-sounding radar for glacier thickness surveys in High-Mountain Asia, Ann.
Glaciol., 61, 35–45, https://doi.org/10.1017/aog.2020.29, 2020.
Reid, T. D. and Brock, B. W.: An energy-balance model for debris-covered
glaciers including heat conduction through the debris layer, J. Glaciol., 56, 903–916,
https://doi.org/10.3189/002214310794457218, 2010.
Reid, T. D. and Brock, B. W.: Assessing ice-cliff backwasting and its
contribution to total ablation of debris-covered Miage glacier, Mont Blanc
massif, Italy, J. Glaciol., 60, 3–13, https://doi.org/10.3189/2014JoG13J045, 2014.
Röhl, K.: Thermo-erosional notch development at fresh-water-calving
Tasman Glacier, New Zealand, J. Glaciol., 52, 203–213,
https://doi.org/10.3189/172756506781828773, 2006.
Sakai, A., Nakawo, M., and Fujita, K.: Melt rate of ice cliffs on the Lirung
Glacier, Nepal Himalayas, 1996, B. Glacier Res., 16, 57–66, 1998.
Sakai, A., Nakawo, M., and Fujita, K.: Distribution Characteristics and
Energy Balance of Ice Cliffs on Debris-covered Glaciers, Nepal Himalaya,
Arct. Antarct. Alp. Res., 34, 12–19,
https://doi.org/10.1080/15230430.2002.12003463, 2002.
Salerno, F., Thakuri, S., Tartari, G., Nuimura, T., Sunako, S., Sakai, A.,
and Fujita, K.: Debris-covered glacier anomaly? Morphological factors
controlling changes in the mass balance, surface area, terminus position,
and snow line altitude of Himalayan glaciers, Earth Planet. Sc. Lett., 471,
19–31, https://doi.org/10.1016/j.epsl.2017.04.039, 2017.
Sato, Y., Fujita, K., Inoue, H., Sunako, S., Sakai, A., Tsushima, A.,
Podolskiy, E. A., Kayastha, R., and Kayastha, R. B.: Ice Cliff Dynamics of
Debris-Covered Trakarding Glacier in the Rolwaling Region, Nepal Himalaya,
Front. Earth Sci., 9, 398, https://doi.org/10.3389/FEART.2021.623623/BIBTEX,
2021.
Shaw, T. E., Brock, B. W., Fyffe, C. L., Pellicciotti, F., Rutter, N., and
Diotri, F.: Air temperature distribution and energy-balance modelling of a
debris-covered glacier, J. Glaciol., 62, 185–198,
https://doi.org/10.1017/jog.2016.31, 2016.
Shean, D. E., Alexandrov, O., Moratto, Z. M., Smith, B. E., Joughin, I. R.,
Porter, C., and Morin, P.: An automated, open-source pipeline for mass
production of digital elevation models (DEMs) from very-high-resolution
commercial stereo satellite imagery, ISPRS J. Photogramm., 116,
101–117, https://doi.org/10.1016/j.isprsjprs.2016.03.012, 2016.
Stefaniak, A. M., Robson, B. A., Cook, S. J., Clutterbuck, B., Midgley, N.
G., and Labadz, J. C.: Mass balance and surface evolution of the
debris-covered Miage Glacier, 1990–2018, Geomorphology, 373, 107474,
https://doi.org/10.1016/j.geomorph.2020.107474, 2021.
Steiner, J. F., Pellicciotti, F., Buri, P., Miles, E. S., Immerzeel, W. W.,
and Reid, T. D.: Modelling ice-cliff backwasting on a debris-covered glacier
in the Nepalese Himalaya, J. Glaciol., 61, 889–907,
https://doi.org/10.3189/2015JoG14J194, 2015.
Steiner, J. F., Litt, M., Stigter, E. E., Shea, J., Bierkens, M. F. P., and
Immerzeel, W. W.: The Importance of Turbulent Fluxes in the Surface Energy
Balance of a Debris-Covered Glacier in the Himalayas, Front. Earth Sci., 6, ,
https://doi.org/10.3389/feart.2018.00144, 2018.
Steiner, J. F., Buri, P., Miles, E. S., Ragettli, S., and Pellicciotti, F.:
Supraglacial ice cliffs and ponds on debris-covered glaciers:
Spatio-temporal distribution and characteristics, J. Glaciol., 65, 617–632,
https://doi.org/10.1017/jog.2019.40, 2019.
Steiner, J. F., Gurung, T. R., Joshi, S. P., Koch, I., Saloranta, T., Shea,
J., Shrestha, A. B., Stigter, E., and Immerzeel, W. W.: Multi-year
observations of the high mountain water cycle in the Langtang catchment,
Central Himalaya, Hydrol. Process., 35, e14189, https://doi.org/10.1002/hyp.14189,
2021.
Tadono, T., Ishida, H., Oda, F., Naito, S., Minakawa, K., and Iwamoto, H.: Precise Global DEM Generation by ALOS PRISM, ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-4, 71–76, https://doi.org/10.5194/isprsannals-II-4-71-2014, 2014.
Thompson, S., Benn, D. I., Mertes, J., and Luckman, A.: Stagnation and mass
loss on a Himalayan debris-covered glacier: processes, patterns and rates,
J. Glaciol., 62, 467–485, https://doi.org/10.1017/jog.2016.37, 2016.
Vincent, C., Wagnon, P., Shea, J. M., Immerzeel, W. W., Kraaijenbrink, P., Shrestha, D., Soruco, A., Arnaud, Y., Brun, F., Berthier, E., and Sherpa, S. F.: Reduced melt on debris-covered glaciers: investigations from Changri Nup Glacier, Nepal, The Cryosphere, 10, 1845–1858, https://doi.org/10.5194/tc-10-1845-2016, 2016.
Watson, C. S., Quincey, D. J., Carrivick, J. L., and Smith, M. W.: Ice cliff
dynamics in the Everest region of the Central Himalaya, Geomorphology, 278, 238–251,
https://doi.org/10.1016/j.geomorph.2016.11.017, 2017a.
Watson, C. S., Quincey, D. J., Smith, M. W., Carrivick, J. L., Rowan, A. V.,
and James, M. R.: Quantifying ice cliff evolution with multi-temporal point
clouds on the debris-covered Khumbu Glacier, Nepal, J. Glaciol., 63, 823-837,
https://doi.org/10.1017/jog.2017.47, 2017b.
Westoby, M. J., Brasington, J., Glasser, N. F., Hambrey, M. J., and
Reynolds, J. M.: “Structure-from-Motion” photogrammetry: A low-cost,
effective tool for geoscience applications, Geomorphology, 179, 300–314,
https://doi.org/10.1016/j.geomorph.2012.08.021, 2012.
Westoby, M. J., Rounce, D. R., Shaw, T. E., Fyffe, C. L., Moore, P. L.,
Stewart, R. L., and Brock, B. W.: Geomorphological evolution of a
debris-covered glacier surface, Earth Surf. Proc. Land., 45,
3431–3448, https://doi.org/10.1002/esp.4973, 2020.
Short summary
Ice cliffs are believed to be important contributors to the melt of debris-covered glaciers, but this has rarely been quantified as the cliffs can disappear or rapidly expand within a few weeks. We used photogrammetry techniques to quantify the weekly evolution and melt of four cliffs. We found that their behaviour and melt during the monsoon is strongly controlled by supraglacial debris, streams and ponds, thus providing valuable insights on the melt and evolution of debris-covered glaciers.
Ice cliffs are believed to be important contributors to the melt of debris-covered glaciers, but...
