hazards -management of volcanoes Flashcards
how can volcano hazards be managed?
.through prediction and protection offered to the local population
can volcanic hazards be managed by prevention?
.no, volcanic hazard cannot be prevented
how can protection be offered to the local population?
.through risk management
what does the risk management of volcanic hazards include?
.preparedness
.mitigation
.adaptation
how is prediction used to manage volcanic hazards?
.involves accurate hazard mapping
by:
-mapping the previous lava and pyroclastic flows by studying geology
-analysing seismic shockwave patterns
-sampling gas and lava emissions
-remote sensing of changes in topography
what does protection involve as a way to manage volcanic hazards?
.reducing the risk of damage by preparing for an eruption
how is protection used to manage volcanic hazards?
.warnings are issued and instructions given on how to react before, during and after an eruption
how can protection be used in the long term to manage volcanic hazards?
.in the longer term, hazard mapping and land-use planning may be used to avoid development in areas at risk
what can hazard mapping be used for, for protection against volcanic hazards?
.hazard maps can be used to inform evacuation strategies
.In ‘at risk areas’ alert systems, shelters and evacuation camps can be constructed for the local population
.emergency food and water supplies can be stored
what are responses to volcanic hazards split into?
.immediate/short term
.long term
what are immediate responses?
.responses that take place just before or after the volcanic
event eg -warnings, evacuation and any attempts to stop or divert lava flows
what are examples of long term responses?
.monitoring of the volcano
.research into finding new ways of
prediction and building barriers in anticipation of the direction of lava flows and lahars
.period of reconstruction of damaged buildings, infrastructure and farmland
