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SUMMARY:Lahars and Huaycos: modelling erosive flash floods - Andrew Hogg\,
  University of Bristol
DTSTART:20240209T160000Z
DTEND:20240209T170000Z
UID:TALK210415@talks.cam.ac.uk
CONTACT:Professor Grae Worster
DESCRIPTION:Huaycos - flash floods in the Peruvian Andes - and lahars – 
 volcanic debris flows - are potent natural hazards that threaten regularly
  lives and livelihoods. They comprise debris-laden fluid that flows rapidl
 y down steep slopes\, bulking up considerably through erosion of the under
 lying bed as they progress. Owing to their rapid onset and the significant
  threat that they pose to communities and infrastructures\, it is importan
 t to predict their motion to assess quantitatively some of the impacts tha
 t they may cause. In this seminar I will unpick some of the mathematical i
 ntricacies of modelling these flows\, present a new model of the key physi
 cal processes that govern the motion and illustrate its operational use wo
 rldwide.\n
LOCATION:MR2
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