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French – German flood risk geohistory in the Rhine Graben
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French – German flood risk geohistory in the Rhine Graben

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French – German flood risk geohistory in the Rhine Graben

French – German flood risk geohistory in the Rhine Graben

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French – German flood risk geohistory in the Rhine Graben Presentation Transcript

  • 1. IDRC International Disaster and RiskConference
    DAVOS 02/06/2010
    French – German flood risk geohistoryin the Rhine Graben(1400 – 2010)
    Brice MARTIN, Romain ANSEL, Karine DIETRICH–CHENELOuarda GUERROUAH, Marie-Claire VITOUX, Lauriane WITH (CRESAT, Mulhouse)
    Axel DRESCHER, Rüdiger GLASER, Iso HIMMELSBACH, Johannes SCHÖNBEIN
    (IPG, Freiburg)
    French – german program ANR – DFG TRANSRISK 2008 - 2010
  • 2. Introduction
    Topic
    Teams
    French, German
    Interdisciplinary work
  • 3.
  • 4. 1. Studied area
    South Rhine Graben
    Homogeneous…
    …with borders
    40km
    France
    Germany
    Vosges
    Black Forrest
    .
    1424
    .
    1493
    Swiss
  • 5. 1. Studied area
    Land of wars
    1870
    1914 – 1918
    1939- 1945
    Changes
    Administration
    Languages
  • 6. 1. Studied area
    Lack of memories / informations
    Destructions
    Losses
    Unacessibility
  • 7. 2. Stakes (crossed – stakes)
    Filling the gaps in the knowledge of the floods in France and in Germany
    Building a common geohistory of the floods
    Optimizing the prevention and the information about the floods,
    Understanding the role of rivers developments responsible for different floods evolution on both sides of the Rhine
    Contributing to the implementation of flood risk observatories on a French – German basis
    Contributing to define a common interdisciplinary vocabulary on risks (and a french – german – english glossary )
  • 8. 3. Methods
    Simultaneous actions (FRA – GER)
    Archives study
    Floods
    Landuse
    Climate
    Connecting the actors
    Investigations on memories and perceptions
  • 9. 4. Analysis
    Comparisons
    Differentscales (time / space)
    France – Germany
    River systems
    Cities on each river system
    Districts in eachcities
    Contextualisation
    Classification
    Maping
    Oldevents / extremevents
    risks
    Database / website
  • 10. 5. Results
    Floods
    1400 – 2010 :
    691 events (FRA)
    453 events (GER)
    France
    by Rivers
    Germany
  • 11. 5. Results
    15th
    16th
    17th
    18th
    19th
    20th
    21th
    Chronology
    overflows 1480 – 2009 Rhine graben
    France / Germany
  • 12. Example (flood of 1910)
    • WHY ?
    • 13. Not known ?
    • 14. Forgotten ?
    • 15. Underestimated ?
    • 16. Differencies (FRA – GER) ?
    Flood of 1910 (Paris flood)
    Known as “the biggest one”...
    ...Only on the french side...
    ...not taken into account
  • 17. Example (flood of 1910)
    Archives problem ? No : many archives on both sides of the Rhine
    Elsässer Kurier 20/01/1910
  • 18. Example (flood of 1910)
    Climatic differencies ?
    17 - 18 januar :
    60cm snow cover
    18 - 19 januar :
    SW flow
     Temperature (5° at 1.000m)
    heavay rainfall (192mm / 24h)
    total snow melt
    19 - 20 januar :
    NW flow
     temperature (-5° at 1.000m)
    heavy snowfall (50cm)
  • 19. january
    (february)
    (november)
    Murg
    Kleine Enz
    Nagold
    Neckar
    january
    Breg
    Brigach
    Donau
    Wutach
    january
    (february)
    (november)
    • 1910 = 4 different floods !
    • 20. January
    • 21. high water : everywhere
    • 22. overflows : french side
    Much more archives on french side
  • 23. ?
    January 1910 :
    • Huge damages only on the french side
    Fribourg
    Bâle
  • 24. Destructive floods in Mulhouse
    Destructive floods in all the Ill basin
    Destructive floods in Mulhouse
    Destructive floods in all the Ill basin
    1910
  • 25. Example (flood of 1910)
    overflows 1480 – 2009 Rhine graben
    France / Germany
    15th
    16th
    17th
    18th
    19th
    20th
    21th
    Disconnection after 1880 (human factors, local aspects)
    1910
  • 26. Conclusion
    Interest / advantages
    • long time analysis
    • 27. crossed analysis
    • 28. interdisciplinary
    • 29. transboundary
    European Directive 2007/60/EC
    on the assessment and management of flood risks
  • 30. Thanks a lot for your attention