Book contents
- Frontmatter
- Contents
- List of contributors
- 1 Introduction
- Part I Processes
- 2 Regional seismic shaking hazards in mountains
- 3 Volcanic hazards and risks: a geomorphological perspective
- 4 Mountain hazards
- 5 Review and future challenges in snow avalanche risk analysis
- 6 Landslide hazards
- 7 Catastrophic landslides and sedimentary budgets
- 8 Landslides and climatic change
- 9 The hazardousness of high-magnitude floods
- 10 Flood hazards: the context of fluvial geomorphology
- 11 Geomorphology and coastal hazards
- 12 Weathering hazards
- 13 Hazards associated with karst
- 14 Soil erosion
- 15 Desertification and land degradation in arid and semi-arid regions
- 16 Dune migration and encroachment
- Part II Processes and applications of geomorphology to risk assessment and management
- Index
- References
3 - Volcanic hazards and risks: a geomorphological perspective
Published online by Cambridge University Press: 10 January 2011
- Frontmatter
- Contents
- List of contributors
- 1 Introduction
- Part I Processes
- 2 Regional seismic shaking hazards in mountains
- 3 Volcanic hazards and risks: a geomorphological perspective
- 4 Mountain hazards
- 5 Review and future challenges in snow avalanche risk analysis
- 6 Landslide hazards
- 7 Catastrophic landslides and sedimentary budgets
- 8 Landslides and climatic change
- 9 The hazardousness of high-magnitude floods
- 10 Flood hazards: the context of fluvial geomorphology
- 11 Geomorphology and coastal hazards
- 12 Weathering hazards
- 13 Hazards associated with karst
- 14 Soil erosion
- 15 Desertification and land degradation in arid and semi-arid regions
- 16 Dune migration and encroachment
- Part II Processes and applications of geomorphology to risk assessment and management
- Index
- References
Summary
Introduction
The burial of Pompeii and Herculaneum by the AD 79 eruption of Vesuvius, the devastation produced by the tsunami generated during the eruption of Krakatoa in 1883 and the city of St Pierre laid waste by Mount Pelée's ‘nuées ardentes’ are but a few awesome examples of disasters caused by powerful volcanic eruptions. Since AD 1783 eruption-related deaths have totalled 220,000 (Tanguy et al., 1998). Most resulted from post-eruption famine and epidemic disease (30%), pyroclastic flows and surges (27%), lahars (17%) and volcanogenic tsunamis (17%). Volcanic fatalities are small compared to those of floods and earthquakes but the potential threat from a massive eruption is greater today than ever before, because of the large concentrations of populations living around volcanoes. More than 500 million people live in active volcanic areas (Tilling, 2005) and at least 200 million now live in cities within 200 km of an active or potentially active volcano (Chester et al., 2001). A volcanic eruption of ‘modest’ size (VEI 3), such as the Nevado del Ruiz event in 1985, results in about 7.7 billion US$ in loss. This figure may look small when compared to the aftermath of the Kobe earthquake in Japan but the modest 1985 eruption affected an estimated 20% of Colombia's domestic growth.
The sense of volcanic risk can be defined by Fournier d'Albe's qualitative ‘risk equation’ (1979): volcanic risk = hazard × vulnerability × value.
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- Geomorphological Hazards and Disaster Prevention , pp. 13 - 32Publisher: Cambridge University PressPrint publication year: 2010
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