Articles | Volume 25, issue 3
https://doi.org/10.5194/nhess-25-1207-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-1207-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Causes, consequences and implications of the 2023 landslide-induced Lake Rasac glacial lake outburst flood (GLOF), Cordillera Huayhuash, Peru
Adam Emmer
CORRESPONDING AUTHOR
Department of Geography and Regional Science, University of Graz, Graz, Austria
Oscar Vilca
Instituto Nacional de Investigación en Glaciares y Ecosistemas de Montaña (INAIGEM), Cusco, Peru
Cesar Salazar Checa
Autoridad Nacional del Agua (ANA), Huaraz, Peru
School of Geography and Planning, University of Sheffield, Sheffield, UK
Simon Cook
Division of Energy, Environment and Society, University of Dundee, Dundee, UK
UNESCO Centre for Water Law, Policy and Science, University of Dundee, Dundee, UK
Elena Pummer
UNESCO Centre for Water Law, Policy and Science, University of Dundee, Dundee, UK
Jan Hrebrina
Department of Civil and Environmental Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Wilfried Haeberli
Department of Geography, University of Zurich, Zurich, Switzerland
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Glacial lake outburst floods (GLOFs) have attracted increased research attention recently. In this work, we review GLOF research papers published between 2017 and 2021 and complement the analysis with research community insights gained from the 2021 GLOF conference we organized. The transdisciplinary character of the conference together with broad geographical coverage allowed us to identify progress, trends and challenges in GLOF research and outline future research needs and directions.
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This paper reports on a recent glacial lake outburst flood (GLOF) event that occurred on 26 June 2020 in Tibet, China. We find that this event was triggered by a debris landslide from a steep lateral moraine. As the relationship between the long-term evolution of the lake and its likely landslide trigger revealed by a time series of satellite images, this case provides strong evidence that it can be plausibly linked to anthropogenic climate change.
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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Ben Clarke, Sihan Li, Ralf Toumi, and Nathan Sparks
EGUsphere, https://doi.org/10.5194/egusphere-2025-665, https://doi.org/10.5194/egusphere-2025-665, 2025
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In December 2021, Super Typhoon Odette brought high winds and heavy rainfall to the central Philippines. The Philippines is one of the most exposed nations globally to tropical cyclones, so the influence of climate change on such events is of huge societal importance. This study combines several methods in extreme event attribution to investigate this, finding that the likelihood of a disaster like Odette in the Philippines has roughly doubled due to current warming.
Maximillian Van Wyk de Vries, Alexandre Dunant, Amy L. Johnson, Erin L. Harvey, Sihan Li, Katherine Arrell, Jeevan Baniya, Dipak Basnet, Gopi K. Basyal, Nyima Dorjee Bhotia, Simon J. Dadson, Alexander L. Densmore, Tek Bahadur Dong, Mark E. Kincey, Katie Oven, Anuradha Puri, and Nick J. Rosser
Nat. Hazards Earth Syst. Sci., 25, 1937–1942, https://doi.org/10.5194/nhess-25-1937-2025, https://doi.org/10.5194/nhess-25-1937-2025, 2025
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Mapping exposure to landslides is necessary to mitigate risk and reduce vulnerability. In this study, we show that there is a poor correlation between building damage and deaths from landslides, such that the deadliest landslides do not always destroy the most buildings and vice versa. This has important implications for our management of landslide risk.
Alexandre Dunant, Tom R. Robinson, Alexander L. Densmore, Nick J. Rosser, Ragindra Man Rajbhandari, Mark Kincey, Sihan Li, Prem Raj Awasthi, Max Van Wyk de Vries, Ramesh Guragain, Erin Harvey, and Simon Dadson
Nat. Hazards Earth Syst. Sci., 25, 267–285, https://doi.org/10.5194/nhess-25-267-2025, https://doi.org/10.5194/nhess-25-267-2025, 2025
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Natural hazards like earthquakes often trigger other disasters, such as landslides, creating complex chains of impacts. We developed a risk model using a mathematical approach called hypergraphs to efficiently measure the impact of interconnected hazards. We showed that it can predict broad patterns of damage to buildings and roads from the 2015 Nepal earthquake. The model's efficiency allows it to generate multiple disaster scenarios, even at a national scale, to support preparedness plans.
Julie Wee, Sebastián Vivero, Tamara Mathys, Coline Mollaret, Christian Hauck, Christophe Lambiel, Jan Beutel, and Wilfried Haeberli
The Cryosphere, 18, 5939–5963, https://doi.org/10.5194/tc-18-5939-2024, https://doi.org/10.5194/tc-18-5939-2024, 2024
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This study highlights the importance of a multi-method and multi-disciplinary approach to better understand the influence of the internal structure of the Gruben glacier-forefield-connected rock glacier and adjacent debris-covered glacier on their driving thermo-mechanical processes and associated surface dynamics. We were able to discriminate glacial from periglacial processes as their spatio-temporal patterns of surface dynamics and geophysical signatures are (mostly) different.
Wilfried Haeberli, Lukas U. Arenson, Julie Wee, Christian Hauck, and Nico Mölg
The Cryosphere, 18, 1669–1683, https://doi.org/10.5194/tc-18-1669-2024, https://doi.org/10.5194/tc-18-1669-2024, 2024
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Maximillian Van Wyk de Vries, Sihan Li, Katherine Arrell, Jeevan Baniya, Dipak Basnet, Gopi K. Basyal, Nyima Dorjee Bhotia, Alexander L. Densmore, Tek Bahadur Dong, Alexandre Dunant, Erin L. Harvey, Ganesh K. Jimee, Mark E. Kincey, Katie Oven, Sarmila Paudyal, Dammar Singh Pujara, Anuradha Puri, Ram Shrestha, Nick J. Rosser, and Simon J. Dadson
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Dominik L. Schumacher, Mariam Zachariah, Friederike Otto, Clair Barnes, Sjoukje Philip, Sarah Kew, Maja Vahlberg, Roop Singh, Dorothy Heinrich, Julie Arrighi, Maarten van Aalst, Mathias Hauser, Martin Hirschi, Verena Bessenbacher, Lukas Gudmundsson, Hiroko K. Beaudoing, Matthew Rodell, Sihan Li, Wenchang Yang, Gabriel A. Vecchi, Luke J. Harrington, Flavio Lehner, Gianpaolo Balsamo, and Sonia I. Seneviratne
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The 2022 summer was accompanied by widespread soil moisture deficits, including an unprecedented drought in Europe. Combining several observation-based estimates and models, we find that such an event has become at least 5 and 20 times more likely due to human-induced climate change in western Europe and the northern extratropics, respectively. Strong regional warming fuels soil desiccation; hence, projections indicate even more potent future droughts as we progress towards a 2 °C warmer world.
Robert Vautard, Geert Jan van Oldenborgh, Rémy Bonnet, Sihan Li, Yoann Robin, Sarah Kew, Sjoukje Philip, Jean-Michel Soubeyroux, Brigitte Dubuisson, Nicolas Viovy, Markus Reichstein, Friederike Otto, and Iñaki Garcia de Cortazar-Atauri
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A deep frost occurred in early April 2021, inducing severe damages in grapevine and fruit trees in France. We found that such extreme frosts occurring after the start of the growing season such as those of April 2021 are currently about 2°C colder [0.5 °C to 3.3 °C] in observations than in preindustrial climate. This observed intensification of growing-period frosts is attributable, at least in part, to human-caused climate change, making the 2021 event 50 % more likely [10 %–110 %].
Sjoukje Y. Philip, Sarah F. Kew, Geert Jan van Oldenborgh, Faron S. Anslow, Sonia I. Seneviratne, Robert Vautard, Dim Coumou, Kristie L. Ebi, Julie Arrighi, Roop Singh, Maarten van Aalst, Carolina Pereira Marghidan, Michael Wehner, Wenchang Yang, Sihan Li, Dominik L. Schumacher, Mathias Hauser, Rémy Bonnet, Linh N. Luu, Flavio Lehner, Nathan Gillett, Jordis S. Tradowsky, Gabriel A. Vecchi, Chris Rodell, Roland B. Stull, Rosie Howard, and Friederike E. L. Otto
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In June 2021, the Pacific Northwest of the US and Canada saw record temperatures far exceeding those previously observed. This attribution study found such a severe heat wave would have been virtually impossible without human-induced climate change. Assuming no nonlinear interactions, such events have become at least 150 times more common, are about 2 °C hotter and will become even more common as warming continues. Therefore, adaptation and mitigation are urgently needed to prepare society.
Ruksana H. Rimi, Karsten Haustein, Emily J. Barbour, Sarah N. Sparrow, Sihan Li, David C. H. Wallom, and Myles R. Allen
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Extreme rainfall events are major concerns in Bangladesh. Heavy downpours can cause flash floods and damage nearly harvestable crops in pre-monsoon season. While in monsoon season, the impacts can range from widespread agricultural loss, huge property damage, to loss of lives and livelihoods. This paper assesses the role of anthropogenic climate change drivers in changing risks of extreme rainfall events during pre-monsoon and monsoon seasons at local sub-regional-scale within Bangladesh.
Adam Emmer, Simon K. Allen, Mark Carey, Holger Frey, Christian Huggel, Oliver Korup, Martin Mergili, Ashim Sattar, Georg Veh, Thomas Y. Chen, Simon J. Cook, Mariana Correas-Gonzalez, Soumik Das, Alejandro Diaz Moreno, Fabian Drenkhan, Melanie Fischer, Walter W. Immerzeel, Eñaut Izagirre, Ramesh Chandra Joshi, Ioannis Kougkoulos, Riamsara Kuyakanon Knapp, Dongfeng Li, Ulfat Majeed, Stephanie Matti, Holly Moulton, Faezeh Nick, Valentine Piroton, Irfan Rashid, Masoom Reza, Anderson Ribeiro de Figueiredo, Christian Riveros, Finu Shrestha, Milan Shrestha, Jakob Steiner, Noah Walker-Crawford, Joanne L. Wood, and Jacob C. Yde
Nat. Hazards Earth Syst. Sci., 22, 3041–3061, https://doi.org/10.5194/nhess-22-3041-2022, https://doi.org/10.5194/nhess-22-3041-2022, 2022
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Glacial lake outburst floods (GLOFs) have attracted increased research attention recently. In this work, we review GLOF research papers published between 2017 and 2021 and complement the analysis with research community insights gained from the 2021 GLOF conference we organized. The transdisciplinary character of the conference together with broad geographical coverage allowed us to identify progress, trends and challenges in GLOF research and outline future research needs and directions.
Guoxiong Zheng, Martin Mergili, Adam Emmer, Simon Allen, Anming Bao, Hao Guo, and Markus Stoffel
The Cryosphere, 15, 3159–3180, https://doi.org/10.5194/tc-15-3159-2021, https://doi.org/10.5194/tc-15-3159-2021, 2021
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This paper reports on a recent glacial lake outburst flood (GLOF) event that occurred on 26 June 2020 in Tibet, China. We find that this event was triggered by a debris landslide from a steep lateral moraine. As the relationship between the long-term evolution of the lake and its likely landslide trigger revealed by a time series of satellite images, this case provides strong evidence that it can be plausibly linked to anthropogenic climate change.
Geert Jan van Oldenborgh, Folmer Krikken, Sophie Lewis, Nicholas J. Leach, Flavio Lehner, Kate R. Saunders, Michiel van Weele, Karsten Haustein, Sihan Li, David Wallom, Sarah Sparrow, Julie Arrighi, Roop K. Singh, Maarten K. van Aalst, Sjoukje Y. Philip, Robert Vautard, and Friederike E. L. Otto
Nat. Hazards Earth Syst. Sci., 21, 941–960, https://doi.org/10.5194/nhess-21-941-2021, https://doi.org/10.5194/nhess-21-941-2021, 2021
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Southeastern Australia suffered from disastrous bushfires during the 2019/20 fire season, raising the question whether these have become more likely due to climate change. We found no attributable trend in extreme annual or monthly low precipitation but a clear shift towards more extreme heat. However, this shift is underestimated by the models. Analysing fire weather directly, we found that the chance has increased by at least 30 %, but due to the underestimation it could well be higher.
Cited articles
ANA: Inventario Nacional de Glaciares y Lagunas, https://hdl.handle.net/20.500.12543/199 (last access: 8 January 2025), 2014.
ASF: ALOS PALSAR, © JAXA/METI ALOS PALSAR; PALSAR_Radiometric_Terrain_Corrected_high_res, accessed through ASF DAAC in 2024, https://doi.org/10.5067/Z97HFCNKR6VA, 2024.
Bat'ka, J., Vilímek, V., Štefanová, E., Cook, S. J., and Emmer, A.: Glacial Lake Outburst Floods (GLOFs) in the Cordillera Huayhuash, Peru: Historic events and current susceptibility, Water, 12, 2664, https://doi.org/10.3390/w12102664, 2020.
Boeckli, L., Brenning, A., Gruber, S., and Noetzli, J.: Permafrost distribution in the European Alps: calculation and evaluation of an index map and summary statistics, The Cryosphere, 6, 807–820, https://doi.org/10.5194/tc-6-807-2012, 2012.
Bondesan, A. and Francese, R. G.: The climate-driven disaster of the Marmolada Glacier (Italy), Geomorphology, 431, 108687, https://doi.org/10.1016/j.geomorph.2023.108687, 2023.
Bookhagen, B. and Strecker, M. R.: Orographic barriers, high-resolution TRMM rainfall, and relief variations along the eastern Andes, Geophys. Res. Lett., 35, L06403, https://doi.org/10.1029/2007GL032011, 2008.
Bressan, L., Guerrero, M., Antonini, A., Petruzzelli, V., Archetti, R., Lamberti, A., and Tinti, S.: A laboratory experiment on the incipient motion of boulders by high-energy coastal flows, Earth Surf. Proc. Land., 43, 2935–2947, https://doi.org/10.1002/esp.4477, 2018.
Carey, M.: Living and Dying with Glaciers: People's historical vulnerability to avalanches and outburst floods in Peru, Glob. Planet. Change, 47, 122–134, https://doi.org/10.1016/j.gloplacha.2004.10.007, 2005.
Carey, M., Huggel, C., Bury, J., Portocarrero, C., and Haeberli, W.: An integrated socio-environmental framework for glacial hazard management and climate change adaptation: Lessons from Lake 513, Cordillera Blanca, Peru, Climatic Change, 112, 733–767, https://doi.org/10.1007/s10584-011-0249-8, 2012.
Cathala, M., Bock, J., Magnin, F., Ravanel, L., Asher, M. B., Astrade, L., Bodin, X., Chambon, G., Delinie, P., Faug, T., Genuite, K., Jaillet, S., Josnin, J.-Y., Revil, A., and Richard, J.: Predisposing, triggering and runout processes at a permafrost-affected rock avalanche site in the French Alps (Étache, June 2020), Earth Surf. Proc. Land., 49, 3221–3247, https://doi.org/10.1002/esp.5881, 2024.
Çengel, Y. and Cimbala, J.: Ebook: Fluid Mechanics Fundamentals and Applications (SI Units), McGraw Hill, 2013.
Ciavarella, A., Cotterill, D., Stott, P., Kew, S., Philip, S., van Oldenborgh, G. J., Skålevåg, A., Lorenz, P., Robin, Y., Otto, F., Hauser, M., Seneviratne, S. I., Lehner, F., and Zolina, O.: Prolonged Siberian heat of 2020 almost impossible without human influence, Climatic Change, 166, 9, https://doi.org/10.1007/s10584-021-03052-w, 2021.
Clague, J. J., Huggel, C., Korup, O., and McGuire, B.: Climate change and hazardous processes in high mountains, Rev. Asoc. Geol. Argent., 69, 328–338, 2012.
Costa, J. E.: Rheologic, geomorphic and sedimentologic differentiation of water floods, hyperconcentrated flows and debris flows, in: Flood Geomorphology, edited by: Baker, V. R., Kochel, R. C., and Patton, P. C., John Wiley and Sons, 113–122, ISBN 9780471625582, 1988.
Costa, J. E. and Schuster, R. L.: The formation and failure of natural dams, Geol. Soc. Am. Bull., 100, 1054–1068, https://doi.org/10.1130/0016-7606(1988)100<1054:TFAFON>2.3.CO;2, 1988.
Davies, M. C. R., Hamza, O., and Harris, C.: The Effect of Rise in Mean Annual Temperature on the Stability of RockSlopes Containing Ice-Filled Discontinuities, Permafrost Periglac., 12, 137–144, https://doi.org/10.1002/ppp.378, 2001.
Ding, Y. J., Mu, C. C., Wu, T. H., Hu, G. J., Zou, D. F., Wang, D., Li, W. P., and Wu, X. D.: Increasing cryospheric hazards in a warming climate, Earth-Sci. Rev., 213, 103500, https://doi.org/10.1016/j.earscirev.2020.103500, 2021.
Emmer, A.: Understanding the risk of glacial lake outburst floods in the twenty-first century, Nat. Water, 2, 608–610, https://doi.org/10.1038/s44221-024-00254-1, 2024.
Emmer, A. and Cochachin, A.: The causes and mechanisms of moraine-dammed lake failures in the Cordillera Blanca, North American Cordillera and Himalaya, AUC Geographica, 48, 5–15, https://doi.org/10.14712/23361980.2014.23, 2013.
Emmer, A. and Vilímek, V.: New method for assessing the susceptibility of glacial lakes to outburst floods in the Cordillera Blanca, Peru, Hydrol. Earth Syst. Sci., 18, 3461–3479, https://doi.org/10.5194/hess-18-3461-2014, 2014.
Emmer, A., Harrison, S., Mergili, M., Allen, S., Frey, H., and Huggel, C.: 70 years of lake evolution and glacial lake outburst floods in the Cordillera Blanca (Peru) and implications for the future, Geomorphology, 365, 107178, https://doi.org/10.1016/j.geomorph.2020.107178, 2020.
Emmer, A., Mergili, M., and Veh, G.: Glacial Lake Outburst Floods: Geomorphological Agents and Hazardous Phenomena, Treatise on Geomorphology, Elsevier, 313–329, https://doi.org/10.1016/B978-0-12-818234-5.00057-2, 2021.
Emmer, A., Allen, S. K., Carey, M., Frey, H., Huggel, C., Korup, O., Mergili, M., Sattar, A., Veh, G., Chen, T. Y., Cook, S. J., Correas-Gonzalez, M., Das, S., Diaz Moreno, A., Drenkhan, F., Fischer, M., Immerzeel, W. W., Izagirre, E., Joshi, R. C., Kougkoulos, I., Kuyakanon Knapp, R., Li, D., Majeed, U., Matti, S., Moulton, H., Nick, F., Piroton, V., Rashid, I., Reza, M., Ribeiro de Figueiredo, A., Riveros, C., Shrestha, F., Shrestha, M., Steiner, J., Walker-Crawford, N., Wood, J. L., and Yde, J. C.: Progress and challenges in glacial lake outburst flood research (2017–2021): a research community perspective, Nat. Hazards Earth Syst. Sci., 22, 3041–3061, https://doi.org/10.5194/nhess-22-3041-2022, 2022a.
Emmer, A., Wood, J. L., Cook, S. J., Harrison, S., Wilson, R., Diaz-Moreno, A., Reynolds, J. M., Torres, J. C., Yarleque, C., Mergili, M., Jara, H. W., Bennett, G., Caballero, A., Glasser, N. F., Melgarejo, E., Riveros, C., Shannon, S., Turpo, E., Tinoco, T., Torres, L., Garay, D., Villafane, H., Garrido, H., Martinez, C., Apaza, N., Araujo, J., and Poma, C.: 160 Glacial lake outburst floods (GLOFs) across the Tropical Andes since the Little Ice Age, Global Planet. Change, 208, 103722, https://doi.org/10.1016/j.gloplacha.2021.103722, 2022b.
EO Browser: Sentinel hub EO browser, https://apps.sentinel-hub.com/eo-browser (last access: 8 January 2025), 2024.
Etzelmüller, B., Guglielmin, M., Hauck, C., Hilbich, C., Hoelzle, M., Isaksen, K., Noetzli, J., Oliva, M., and Ramos, M.: Twenty years of European mountain permafrost dynamics – the PACE legacy, Environ. Res. Lett., 15, 104070, https://doi.org/10.1088/1748-9326/abae9d, 2020.
Google Earth Pro: Google, Inc., https://www.google.com/earth/about/versions/#earth-pro (last access: 8 January 2025), 2024.
Gruber, S.: Derivation and analysis of a high-resolution estimate of global permafrost zonation, The Cryosphere, 6, 221–233, https://doi.org/10.5194/tc-6-221-2012, 2012.
Gruber, S. and Haeberli, W.: Permafrost in steep bedrock slopes and its temperature-related destabilization following climate change, J. Geophys. Res., 112, F02S18, https://doi.org/10.1029/2006JF000547, 2007.
Haeberli, W.: Untersuchung zur Verbreitung von Permafrost zwischen Flüelapass und Piz Grialetsch (Graubünden), Dissertation der Universität Basel, Mitteilung VAW/ETHZ, https://ethz.ch/content/dam/ethz/special-interest/baug/vaw/vaw-dam/documents/das-institut/mitteilungen/1970-1979/017.pdf (last access: 19 March 2025), 1975.
Haeberli, W., Iken, A., and Siegenthaler, H.: Glaziologische Aspekte beim Bau der Fernmelde-Mehrzweckanlage der PTT auf dem Chli Titlis, Mitteilung VAW/ETHZ, 41, “Festschrift Peter Kasser”, 59–75, https://ethz.ch/content/dam/ethz/special-interest/baug/vaw/vaw-dam/documents/das-institut/mitteilungen/1970-1979/041.pdf (last access: 19 March 2025), 1979.
Haeberli, W., Wegmann, M., and Vonder Muehll, D.: Slope stability problems related to glacier shrinkage and permafrost degradation in the Alps, Eclogae Geol. Helv., 90, 407–414, 1997.
Haeberli, W., Huggel, C., Kääb, A., Zgraggen-Oswald, S., Polkvoj, A., Galushkin, I., Zotikov, I., and Osokin, N.: The Kolka-Karmadon rock/ice slide of 20 September 2002: an extraordinary event of historical dimensions in North Ossetia, Russian Caucasus, J. Glaciol., 50, 533–546, 2004.
Haeberli, W., Schaub, Y., and Huggel, C.: Increasing risks related to landslides from degrading permafrost into new lakes in de-glaciating mountain ranges, Geomorphology, 293, 405–417, 2017.
Haeberli, W., Allen, S., and Frey, H.: Estimating probabilities of occurrence related to impacts on glacial lakes from large rock-ice avalanches, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-2511, https://doi.org/10.5194/egusphere-egu22-2511, 2022.
Hall, S. R., Farber, D. L., Ramage, J. M., Rodbell, D. T., Finkel, R. C., Smith, J. A., Mark, B. G., and Kassel, C.: Geochronology of Quaternary glaciations from the tropical Cordillera Huayhuash, Peru, Quaternary Sci. Rev., 28, 2991–3009, 2009.
Hasler, A., Gruber, S., and Beutel, J.: Kinematics of steep bedrock permafrost, J. Geophys. Res., 117, F01016, https://doi.org/10.1029/2011JF001981, 2012.
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A., Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D., Simmons, A., Soci, C., Abdalla, S., Abellan, X., Balsamo, G., Bechtold, P., Biavati, G., Bidlot, J., Bonavita, M., De Chiara, G., Dahlgren, P., Dee, D., Diamantakis, M., Dragani, R., Flemming, J., Forbes, R., Fuentes, M., Geer, A., Haimberger, L., Healy, S., Hogan, R. J., Hólm, E., Janisková, M., Keeley, S., Laloyaux, P., Lopez, P., Lupu, C., Radnoti, G., de Rosnay, P., Rozum, I., Vamborg, F., Villaume, S., and Thépaut, J. N.: The ERA5 global reanalysis, Q. J. Roy. Meteor. Soc., 146, 1999–2049, https://doi.org/10.1002/qj.3803, 2020.
Hubbard, B., Heald, A., Reynolds, J. M., Quincey, D., Richardson, S. D., Zapata, M. L., Santillan, N. P., and Hambrey, M. J.: Impact of a rock avalanche on a morainedammed proglacial lake: Laguna Safuna Alta, Cordillera Blanca, Peru, Earth Surf. Proc. Land., 30, 1251–1264, 2005.
Huggel, C., Carey, M., Emmer, A., Frey, H., Walker-Crawford, N., and Wallimann-Helmer, I.: Anthropogenic climate change and glacier lake outburst flood risk: local and global drivers and responsibilities for the case of lake Palcacocha, Peru, Nat. Hazards Earth Syst. Sci., 20, 2175–2193, https://doi.org/10.5194/nhess-20-2175-2020, 2020.
Hugonnet, R., McNabb, R., Berthier, E., Menounos, B., Nuth, C., Girod, L., Farinotti, D., Huss, M., Dussaillant, I., Brun, F., and Kaab, A.: Accelerated global glacier mass loss in the early twenty-first century, Nature, 592, 726–731, 2021.
Huss, M., Bookhagen, B., Huggel, C., Jacobsen, D., Bradley, R. S., Clague, J. J., Vuille, M., Buytaert, W., Cayan, D. R., Greenwood, G., Mark, B. G., Milner, A. M., Weingartner, R., and Winder, M.: Toward mountains without permanent snow and ice, Earths Future, 5, 418–435, 2017.
IGM: Mapa geologico del Peru 1:1 000 000, Instituto de Geologia y Mineria (IGM), Lima, Peru, 1 p., 1975.
Immerzeel, W. W., Lutz, A. F., Andrade, M., Bahl, A., Biemans, H., Bolch, T., Hyde, S., Brumby, S., Davies, B., Dahe, Q., Elmore, A. C., Emmer, A., Feng, M., Fernandez Rivera, A., Haritashya, U., Kargel, J. S., Koppes, M., Kulkarni, A. V., Mayewski, P., Nepal, S., Pacheco, P., Painter, T., Pellicciotti, F., Rajaram, H., Rupper, S., Sinisalo, A., Shrestha, A. B., Viviroli, D., Wada, Y., Xiao, C., Yao, T., and Baillie, J.: Importance and vulnerability of world's water towers, Nature, 577, 364–369, 2020.
INAIGEM: The National Inventory of Glaciers: The Glacial Mountain Ranges of Peru, https://hdl.handle.net/20.500.12543/2623 (last access: 8 January 2025), 2018.
Jakob, M. and Hungr, O.: Debris-flow hazards and related phenomena, Springer Berlin, Heidelberg, Vol. 739, https://doi.org/10.1007/b138657, 2005.
Keller, F.: Automated mapping of permafrost using the program PERMAKART within the Geographical Information System ARC/INFO, Permafrost Periglac., 3, 133–138, 1992.
Kenner, R., Noetzli, J., Hoelzle, M., Raetzo, H., and Phillips, M.: Distinguishing ice-rich and ice-poor permafrost to map ground temperatures and ground ice occurrence in the Swiss Alps, The Cryosphere, 13, 1925–1941, https://doi.org/10.5194/tc-13-1925-2019, 2019.
Kinzl, H., Schneider, E., and Awerzger, A.: Cordillera Huayhuash, Perú – Ein Bildwerk über ein Tropisches Hochgebirge, Verlag Tiroler Graphik, Innsbruck, Austria, 42 pp., 1954.
Knight, J. and Harrison, S.: The impacts of climate change on terrestrial Earth surface systems, Nat. Clim. Change, 3, 24–29, 2013.
Korup, O. and Tweed, F.: Ice, moraine, and landslide dams in mountainous terrain, Quaternary Sci. Rev., 26, 3406–3422, 2007.
Krautblatter, M., Funk, D., and Günzel, F. K.: Why permafrost rocks become unstable: A rock-ice mechanical model in time and space, Earth Surf. Proc. Land., 38, 876–887, https://doi.org/10.1002/esp.3374, 2013.
LandsatLook: USGS Landsat Collection 2 data, https://landsatlook.usgs.gov (last access: 8 January 2025), 2024.
Lorang, M. S.: A wave-competence approach to distinguish between boulder and megaclast deposits due to storm waves versus tsunamis, Mar. Geol., 283, 90–97, 2011.
Lützow, N., Veh, G., and Korup, O.: A global database of historic glacier lake outburst floods, Earth Syst. Sci. Data, 15, 2983–3000, https://doi.org/10.5194/essd-15-2983-2023, 2023.
Mamot, P., Weber, S., Eppinger, S., and Krautblatter, M.: A temperature-dependent mechanical model to assess the stability of degrading permafrost rock slopes, Earth Surf. Dynam., 9, 1125–1151, https://doi.org/10.5194/esurf-9-1125-2021, 2021.
Margreth, S., Funk, M., Tobler, D., Dalban, P., Meier, L., and Lauper, J.: Analysis of the hazard caused by ice avalanches from the hanging glacier on the Eiger west face, Cold Reg. Sci. Technol., 144, 63–72, https://doi.org/10.1016/j.coldregions.2017.05.012, 2017.
McColl, S. T. and Cook, S. J.: A universal size classification system for landslides, Landslides, 21, 111–120, https://doi.org/10.1007/s10346-023-02131-6, 2024.
McFadden, E. M., Ramage, J., and Rodbell, D. T.: Landsat TM and ETM+ derived snowline altitudes in the Cordillera Huayhuash and Cordillera Raura, Peru, 1986–2005, The Cryosphere, 5, 419–430, https://doi.org/10.5194/tc-5-419-2011, 2011.
Muñoz, R., Huggel, C., Frey, H., Cochachin, A., and Haeberli, W.: Glacial lake depth and volume estimation based on a large bathymetric dataset from the Cordillera Blanca, Peru, Earth Surf. Proc. Land., 45, 1510–1527, https://doi.org/10.1002/esp.4826, 2020.
Nandasena, N. A. K. and Tanaka, N.: Boulder transport by high energy: Numerical model-fitting experimental observations, Ocean Eng., 57, 163–179, 2013.
Noetzli, J. and Gruber, S.: Transient thermal effects in Alpine permafrost, The Cryosphere, 3, 85–99, https://doi.org/10.5194/tc-3-85-2009, 2009.
Noetzli, J., Gruber, S., Kohl, Th., Salzmann, N., and Haeberli, W.: Three-dimensional distribution and evolution of permafrost temperatures in idealized high-mountain topography, J. Geophys. Res., 112, F02S13, https://doi.org/10.1029/2006JF000545, 2007.
Nott, J.: Waves, coastal boulder deposits, and the importance of the pre-transport setting, Earth Planet. Sc. Lett., 210, 269–276, 2003.
Obu, J.: How much of the earth's surface is underlain by permafrost?, J. Geophys. Res.-Earth, 126, e2021JF006123, https://doi.org/10.1029/2021JF006123, 2021.
O'Connor, J. E., Clague, J. J., Walder, J. S., Manville, V., and Beebee, R. A.: Outburst floods, in: Treatise on Geomorphology, Fluvial Geomorphology, vol. 9, edited by: Schroder, J. and Wohl, E., Academic Press, San Diego, 475–510, ISBN: 978-0-12-398353-4, 2013.
Olivieri, L. and Bettanini, C.: Preliminary observation of Marmolada glacier collapse of July 2022 with space-based cameras, Remote Sens. Lett., 14, 21–29, 2023.
Philip, S., Kew, S., van Oldenborgh, G. J., Otto, F., Vautard, R., van der Wiel, K., King, A., Lott, F., Arrighi, J., Singh, R., and van Aalst, M.: A protocol for probabilistic extreme event attribution analyses, Adv. Stat. Clim. Meteorol. Oceanogr., 6, 177–203, https://doi.org/10.5194/ascmo-6-177-2020, 2020.
Planet Team: Planet Application Program Interface: In Space for Life on Earth, San Francisco, CA, Planet Labs PBC, https://www.planet.com/ (last access: 18 March 2025), 2024.
Rabatel, A., Francou, B., Soruco, A., Gomez, J., Cáceres, B., Ceballos, J. L., Basantes, R., Vuille, M., Sicart, J.-E., Huggel, C., Scheel, M., Lejeune, Y., Arnaud, Y., Collet, M., Condom, T., Consoli, G., Favier, V., Jomelli, V., Galarraga, R., Ginot, P., Maisincho, L., Mendoza, J., Ménégoz, M., Ramirez, E., Ribstein, P., Suarez, W., Villacis, M., and Wagnon, P.: Current state of glaciers in the tropical Andes: a multi-century perspective on glacier evolution and climate change, The Cryosphere, 7, 81–102, https://doi.org/10.5194/tc-7-81-2013, 2013.
Ravanel, L., Guillet, G., Kaushik, S., Preunkert, S., Malet, E., Magnin, F., Trouvé, E., Montagnat, M., Yan, Y., and Deline, P.: Ice aprons in high-Alpine steep faces – Insights from the Mont Blanc massif (Western Alps), J. Glaciol., 69, 1275–1291, https://doi.org/10.1017/jog.2023.15, 2023.
RGI Consortium: NSIDC: National Snow and Ice Data Center, Colorado, USA: Randolph Glacier Inventory – A Dataset of Global Glacier Outlines, https://doi.org/10.7265/4m1f-gd79, 2017.
Salazar, C. and Valverde, M.: Evaluación técnica de las lagunas: Jahuacocha, Solteracocha, Gochacotán, Autoridad Nacional del Agua, Huaráz, Peru, 19 pp., 2022.
SANDRP: Glacial Lake Flood Destroys Teesta-3 Dam in Sikkim, Brings Wide-Spread Destruction, https://sandrp.in/2023/10/04/glacial-lake-flood-destroys-teesta-3-dam-in-sikkim-brings-wide-spread-destruction/ (last access: 8 January 2025), 2023.
Schauwecker, S., Rohrer, M., Huggel, C., Endries, J., Montoya, N., Neukom, R., Perry, B., Salzmann, N., Schwarb, M., and Suarez, W.: The freezing level in the tropical Andes, Peru: An indicator for present and future glacier extents, J. Geophys. Res.-Atmos., 122, 5172–5189, https://doi.org/10.1002/2016JD025943, 2017.
Shugar, D. H., Burr, A., Haritashya, U. K., Kargel, J. S., Watson, C. S., Kennedy, M. C., Bevington, A. R., Betts, R. A., Harrison, S., and Strattman, K.: Rapid worldwide growth of glacial lakes since 1990, Nat. Clim. Change, 10, 939–945, 2020.
Shugar, D. H., Jacquemart, M., Shean, D., Bhushan, S., Upadhyay, K., Sattar, A., Schwanghart, W., McBride, S., Van Wyk de Vries, M., Mergili, M., Emmer, A., Deschamps-Berger, C., McDonnell, M., Bhambri, R., Allen, S., Berthier, E., Carrivick, J. L., Clague, J. J., Dokukin, M., Dunning, S. A., Frey, H., Gascoin, S., Haritashya, U. K., Huggel, C., Kääb, A., Kargel, J. S., Kavanaugh, J. L., Lacroix, P., Petley, D., Rupper, S., and Azam, M. F.: A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya, Science, 373, 300–306, 2021.
Stewart-Jones, E. and Gruber, S.: Transferring cryosphere knowledge between mountains globally: A case study of western Canadian mountains, the European Alps and the Scandes, Journal of Alpine Research, 111-2, 12203, https://doi.org/10.4000/rga.12203, 2023.
Stoffel, M. and Huggel, C.: Effects of climate change on mass movements in mountain environments, Progress in Physical Geography – Earth and Environment, 36, 421–439, 2012.
Thompson, L. G., Mosley-Thompson, E., Davis, M. E., Lin, P.-N., Henderson, K. A., Cole-Dai, J., Bolzan, J. F., and Liu, K.-B.: Late glacial stage and Holocene tropical ice core records from Huascarán, Peru, Science, 269, 46–50, 1995.
USGS: Earthquake catalogue, USGS Earthquake Hazards Program, https://earthquake.usgs.gov/earthquakes/search/ (last access: 8 January 2025), 2024.
Valderrama, P. and Vilca, O.: Dinámica del aluvión de la Laguna 513, Cordillera Blanca, Ancash, Perú, Primeros alcances, in: XV Congreso Peruano de Geología, Resúmenes Extendidos, Perú, 27 September–1 October 2010, Sociedad Geológica del Perú, Cusco, Vol. Pub. Esp., No. 9, 336–341, 2010.
van Oldenborgh, G. J., van der Wiel, K., Kew, S., Philip, S., Otto, F., Vautard, R., King, A., Lott, F., Arrighi, J., Singh, R., and van Aalst, M.: Pathways and pitfalls in extreme event attribution, Climatic Change, 166, 13, https://doi.org/10.1007/s10584-021-03071-7, 2021.
Van Rijn, L. C.: Critical movement of large rocks in currents and waves, Int. J. Sediment Res., 34, 387–398, 2019.
Veh, G., Lützow, N., Kharlamova, V., Petrakov, D., Hugonnet, R., and Korup, O.: Trends, breaks, and biases in the frequency of reported glacier lake outburst floods, Earths Future, 10, e2021EF002426, https://doi.org/10.1029/2021EF002426, 2022.
Vilca, O., Mergili, M., Emmer, A., Frey, H., and Huggel, C.: The 2020 glacial lake outburst flood process chain at Lake Salkantaycocha (Cordillera Vilcabamba, Peru), Landslides, 18, 2211–2223, 2021.
Vilca, O., Vila, R., and Bustinza, V.: Reporte de inspección 01-2022: Laguna Upiscocha, INAIGEM, 16 pp., 2022.
Vilímek, V., Klimeš, J., Emmer, A., and Benešová, M.: Geomorphologic impacts of the glacial lake outburst flood from lake no. 513 (Peru), Environ. Earth Sci., 73, 5233–5244, https://doi.org/10.1007/s12665-014-3768-6, 2015.
Walter, F., Amann, F., Kos, A., Kenner, R., Phillips, M., de Peux, A., Huss, M., Tognacca, C., Clinton, J., Diehl, T., and Bonanomi, Y.: Direct observations of a three million cubic meter rock-slope collapse with almost immediate initiation of ensuing debris flows, Geomorphology, 351, 106933, https://doi.org/10.1016/j.geomorph.2019.106933, 2019.
Wegner, S. A.: Human Interaction with Glacier-Related Hazards in the Cordillera Blanca, in: Geoenvironmental Changes in the Cordillera Blanca, Peru, edited by: Vilímek, V., Mark, B., and Emmer, A., Geoenvironmental Disaster Reduction, Springer, Cham, 205–219, https://doi.org/10.1007/978-3-031-58245-5_12, 2024.
Wood, J. L., Harrison, S., Wilson, R., Emmer, A., Yarleque, C., Glasser, N. F., Torres, J. C., Caballero, A., Araujo, J., Bennett, G. L., Diaz, A., Garay, D., Jara, H., Poma, C., Reynolds, J. M., Riveros, C. A., Romero, E., Shannon, S., Tinoco, T., Turpo, E., and Villafane, H.: Contemporary glacial lakes in the Peruvian Andes, Global Planet. Change, 204, 103574, https://doi.org/10.1016/j.gloplacha.2021.103574, 2021.
Zapata, M.L.: La dinamica glaciar en lagunas de la Cordillera Blanca, Acta Mont. Ser. A Geodyn., 19, 37–60, 2002.
Zhang, G., Carrivick, J. L., Emmer, A., Shugar, D. H., Veh, G., Wang, X., Labedz, C., Mergili, M., Mölg, N., Huss, M., Allen, S., Sugiyama, S., and Lützow, N.: Characteristics and changes of glacial lakes and outburst floods, Nature Reviews Earth and Environment, 5, 447–462, 2024.
Zheng, G., Mergili, M., Emmer, A., Allen, S., Bao, A., Guo, H., and Stoffel, M.: The 2020 glacial lake outburst flood at Jinwuco, Tibet: causes, impacts, and implications for hazard and risk assessment, The Cryosphere, 15, 3159–3180, https://doi.org/10.5194/tc-15-3159-2021, 2021.
Short summary
We describe in detail the most recent large landslide-triggered glacial lake outburst flood (GLOF) in the Peruvian Andes (the 2023 Rasac GLOF), analysing its preconditions and consequences, as well as the role of the changing climate. Our study contributes to understanding GLOF occurrence patterns in space and time and corroborates reports detailing the increasing frequency of such events in changing mountains.
We describe in detail the most recent large landslide-triggered glacial lake outburst flood...
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