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Topic 7: Volcano, disasters and early warning in the Cordillera Central

Topic 7: Volcano, disasters and early warning in the Cordillera Central. J.L. Ceballos. Volcano, disasters & early warning. Nevado del Huila volcano. Worni, 2008. Volcano, disasters & early warning: Huila. QuickBird, Feb. ‘07. No previous historic activity

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Topic 7: Volcano, disasters and early warning in the Cordillera Central

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  1. Topic 7: Volcano, disasters and early warning in the Cordillera Central J.L. Ceballos

  2. Volcano, disasters & early warning Nevado del Huila volcano Worni, 2008

  3. Volcano, disasters & early warning: Huila QuickBird, Feb. ‘07 • No previous historic activity • 2 phreatic eruptions in February 2007 and April 2007 • Crevasse formation and expulsion of large amounts of water (107 m3) • Ash fall, subaerial melting of ice

  4. Volcano, disasters & early warning: Huila • Failure of glacier tongue on El Oso glacier, possibly by melt water input and subsequent destabilization of the glacier base

  5. Volcano, disasters & early warning: Huila • Two massive lahars: April 2007 and November 2008: several 100 million m3 !! • Affected areas: along Río Páez (150 km !) 18 April 2007

  6. Volcano, disasters & early warning: Huila 20 November 2008

  7. Volcano, disasters & early warning Risk R = f (H, V) Hazard Risk Vulnerability

  8. Volcano, disasters & early warning: Ruíz Volcaón Cerro Machín

  9. Volcano, disasters & early warning: Machín Ingeominas

  10. Volcano, disasters & early warning: Machín Ingeominas

  11. Volcano, disasters & early warning: Machín Ingeominas

  12. Volcano, disasters & early warning: Machín Hazard map Machín volcano Cerro Machín Ibagué Cajamarca Ingeominas

  13. Volcano, disasters & early warning: Ruíz Nevado del Ruíz volcano Huggel et al. 2007

  14. Volcano, disasters & early warning: Ruíz Views on Nevado del Ruíz volcano Ramírez/ Ceballos

  15. Volcano, disasters & early warning: Ruíz Active lahar channels

  16. Volcano, disasters & early warning: Ruíz Nevado del Ruíz volcano The Armero 1985 disaster - ~23,000 people killed R. Janda, USGS

  17. Volcano, disasters & early warning: Ruíz The Armero disaster - then …and now

  18. Volcano, disasters & early warning: Combeima Nevado del Tolima volcano / Combeima valley

  19. Volcano, disasters & early warning: Combeima ...with an ice-capped active volcano at the valley head The Combeima valley – a tropical, steep-terrain region

  20. Volcano, disasters & early warning: Combeima Lahar (debris flow) scenarios for the Combeima valley in Colombia Nevado del Tolima Volcano M. Künzler, 2008

  21. Volcano, disasters & early warning: Combeima Frequent landslide strike this valley... Cruz Roja July 2009 June 2006

  22. Volcano, disasters & early warning: Combeima Destroyed school – a hot topic Very high discharge debris flows Cruz Roja

  23. Volcano, disasters & early warning: Combeima Hazard, vulnerability and risk study M. Künzler, 2008

  24. Volcano, disasters & early warning: Combeima Total vulnerability M. Künzler, 2008

  25. Volcano, disasters & early warning: Combeima Resulting risk for Ibagué M. Künzler, 2008

  26. Volcano, disasters & early warning: Combeima Risk for local communities M. Künzler, 2008

  27. Volcano, disasters & early warning: Combeima Livelihood conditions in landslide prone regions of Combeima

  28. Volcano, disasters & early warning: Combeima Livelihood conditions in flood endangered areas of Ibagué

  29. Volcano, disasters & early warning: Combeima Military controls Preparedness courses with communities

  30. Volcano, disasters & early warning • Guiding questions for group work: • Where are the hotspots of volcano hazards in Colombia and what are possible consequences of these hazards? • Are these hazards changing with ongoing impacts from climate change? • How is Colombia responding to these hazards? (Government institutions, NGO’s, communities)

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