EGU21-9744, updated on 04 Mar 2021
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

A new GLOF inventory for the Peruvian and Bolivian Andes

Adam Emmer1, Simon Cook2, Joanne L. Wood3, Stephan Harrison3, Ryan Wilson4, Alejandro Diaz-Moreno5, John M. Reynolds5, and Juan Torres6
Adam Emmer et al.
  • 1University of Graz, Austria (;
  • 2University of Dundee, UK
  • 3University of Exeter, UK
  • 4University of Huddersfield, UK
  • 5Reynolds International Ltd, UK
  • 6INAIGEM, Peru

Addressing the question of whether Glacial Lake Outburst Floods (GLOFs) are changing in frequency and magnitude in modern times requires historical context, but suffers from incomplete GLOF inventories, especially in remote mountain regions. Here, we exploit high-resolution, multi-temporal satellite and aerial imagery combined with documentary data to identify GLOF events across the glacierized Cordilleras of Peru and Bolivia, using a set of diagnostic geomorphic features. More than 150 GLOFs are characterised and analysed, far exceeding the number of previously reported events. We provide statistics on location, magnitude, timing and characteristics of these events. Further, we describe several cases in detail and document a wide range of process chains associated with GLOFs. Our findings outline implications for regional GLOF hazard identification and assessment and provide solid basis for enhanced understanding GLOF occurrence under changing climate conditions and glacier retreat.

How to cite: Emmer, A., Cook, S., Wood, J. L., Harrison, S., Wilson, R., Diaz-Moreno, A., Reynolds, J. M., and Torres, J.: A new GLOF inventory for the Peruvian and Bolivian Andes, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-9744,, 2021.


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