Floods and Landslides 2005

Transcrição

26th Session of the EFC Working Party on the
Management of Mountain Watersheds
19th to 22nd August 2008, Oulu/Finland
Impact of Climate Change
on Natural Hazards in Austria
NATIONAL REPORT
AUSTRIA
Wildbach- und Lawinenverbauung
eine Dienststelle des Lebensministeriums
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Global increase of temperatures:
between 1.8°C and 4.0°C (IPCC 2007)
Impacts of global warming are already apparent in the Alps:
decrease of 20% of the mean summer precipitation
regional changes between -10% and +20% for winter precipitation
Frequent extreme (storms, heavy rainfall) increasingly causing
debris flows and floods associated with considerable ecological,
economical and social damage
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winter precipitation in the Alpine Region.
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Large parts of Austria within the Alpine arc and related climatic
conditions are at considerable risk of being affected by natural
disasters
Extreme natural disasters in the near past:
Avalanche disaster 1999 (Tyrol, Vorarlberg)
Flood disaster 2002 (Salzburg, Upper Austria, Lower Austria)
Flood and landslide disaster 2005 (Styria, Tyrol, Vorarlberg)
Extreme snowfall event 2006 (Salzburg, Styria)
Strom disasters 2007/2008: Kyril, Emma and Paula
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Avalanche Galtür 1999
Flood Danube 2002
Flood Paznaun
Valley
2005disaster Reichenhall 2006
Snow
loade
Storm Kyrill 2007
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Recent research results indicate that Climate Change has a
paramount impact on natural hazards in the Alpine environment.
The following changes are expected:
probable increase of floods in frequency and amplitude
increase of avalanches in frequency and run out distances
extreme low water periods and droughts mainly in the summer
lowering of the water table; reduction of reservoirs of storage dams
risk of rock falls and slides caused by melting permafrost and melting glaciers
intensified risk of forest fires
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Floods in August 2002: claimed nine lives, had very
detrimental effects on settlements and caused damages of
approximately 3 billion Euros.
Floods and Landslides 2005: Austria’s west experienced
extreme rainfalls up to 250 mm a day, which led to disastrous
floods again, causing damages of about 700 million Euros.
Storm events Paula and Emma 2008: Destruction of vast
areas of forest in Styria, total damage of 4,15 Mio. cubic meter
of wood.
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Natural hazards are phenomena in nature that cannot be
prevented, only mitigated.
Climate changes triggers changes that force to adapt human
life to these changing risks.
New strategies and approaches to adaptation:
Precaution in area
Precaution in building
Precaution in behaviour
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= provision of necessary areas for flood retention and land use
adapted to hazard potential
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= area development adapted to hazard potenzial, technical
protection of buildings
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= public information, development of conciousness and
acceptance for natural hazards, education
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Austria takes great efforts in R&D and participates in numerous
international CC-adaptation projects:
Flood Risk I (2004) and Flood Risk II (2008)
ClimChAlp (Interreg III)
AdaptAlp and CLISP (Interreg IV)
National Climate und Energy Fund
MEDEA (data information system for meteorological extreme events in Austria)
CIRCLE and CRUE (EraNet)
STARTCLIM (national funding initiative in CC-research )
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Transnational cooperation in the Alpine Space should be further intensified to
exchange experiences, knowledge and methods between administration,
technical authorities and scientists.
Monitoring of slope deformations and other natural hazards should be
intensified to identify zones at risks as soon as possible.
Historic data as a retro-perspective analysis tool should be included for all
kind of monitoring and scenario building.
A full coverage of hazard maps should be provided for areal development.
A “risk dialogue” has to be initiated between experts, administration and the
public.
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Transnational cooperation in the Alpine Space should be further intensified to
exchange experiences, knowledge and methods between administration,
technical authorities and scientists.
Monitoring of slope deformations and other natural hazards should be
intensified to identify zones at risks as soon as possible.
Historic data as a retro-perspective analysis tool should be included for all
kind of monitoring and scenario building.
A full coverage of hazard maps should be provided for areal development.
A “risk dialogue” has to be initiated between experts, administration and the
public.
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Trust me,
in this area avalanches
are a calculable risk!
Let´s hope that this
will not be the
result of climate
change in the near
future – at least not
in Austria.
Thanks for
Attention!
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16.04.2009

Floods and Landslides 2005

Transcrição

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