Abstract
Assessing the extent to which glacial lake outburst floods (GLOFs) are increasing in frequency in modern times and whether their incidence is driven by anthropogenic climate change requires historical context. However, progress on this issue is hampered by incomplete GLOF inventories, especially in remote mountain regions. Here, we exploit high-resolution, multi-temporal satellite and aerial imagery, and documentary data to identify GLOF events across the glacierized Cordilleras of Peru and Bolivia, using a set of diagnostic geomorphic features. A total of 160 GLOFs from 151 individual sites are characterised and analysed, tripling the number of previously reported events. We provide statistics on location, magnitude, timing and characteristics of these events with implications for regional GLOF hazard identification and assessment. Furthermore, we describe several cases in detail and document a wide range of process chains associated with Andean GLOFs.
Original language | English |
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Article number | 103722 |
Journal | Global and Planetary Change |
Volume | 208 |
DOIs | |
Publication status | Published - Jan 2022 |
Bibliographical note
Funding Information:We would like to thank three anonymous reviewers for their valuable and helpful comments and suggestions. This work was supported by RCUK-CONICYT ( Research Council UK and National Commission for Scientific Research and Technology) Glacial Lakes of Peru (GLOP) project. AE and MM acknowledge the financial support by the University of Graz.
Publisher Copyright:
© 2021 The Authors
Keywords
- Andes
- Bolivia
- Glacial lake outburst floods
- GLOF
- Peru