The multirisk approach for the Pays A3V, France, BRGM

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Nathalie MARÇOT, Carola MIRGON

BRGM, France

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The multirisk approach for the Pays A3V, France, BRGM

  1. 1. The multirisk approach for the « Pays A3V » (Alpes de Haute-Provence – France) Projectde projet :: Chef manager Nathalie Marçot Nathalie Marçot n.marcot@brgm.fr n.marcot@brgm.fr Tel +33 (0)417 20 42 42 Tel 04 91 91 17 20 Fax +33 (0)4 91 17 20 40 Fax 04 91 17 20 40Régional Geological Survey Provence Alpes Côtes d ’AzurWednesday, 29 August 2012
  2. 2. Problem How to integrate all these natural hazards in country planning to support the decision-making process ?Wednesday, 29 August 2012 >2
  3. 3. Objectives> Administrators needs (Ministry of Ecology / Region PACA) :On district scale- Making Multi Risk Prevention Planning (PPR) and spread it over several districts ; -> for Ministry of Ecology- Helping the districts with their development projects. -> for the Region PACAWednesday, 29 August 2012 >3
  4. 4. Objectives> Administrators needs (Ministry of Ecology / Region PACA):On territory scale (for the Ministry of Ecology)- Making a geosystemic exercise over a bigger territory than district, showing all the possible hazards, create a communication between administrators of the territory, and connect risk management and territory planning ;- Integrating solutions of risk management policy on a territory ;- Studying damages and impacts of multiple risks and trying to limit their consequences.Wednesday, 29 August 2012 >4
  5. 5. Objectives> Administrators needs (Ministry of Ecology / Region PACA):On territory scale (for the Region PACA)- Speaking about natural disasters management without using reglementation first, which can be interesting for communication ;- Leading people from different administrations (security, mayors, management…) to talk together ;- Speaking about all phenomenon, and not very well known natural phenomenon or with low reccurence ;- Integrating the season’s issue in the analysis to introduce economics actors.Wednesday, 29 August 2012 >5
  6. 6. Objectives of the project> Engagement of the « Pays A3V » in a process of sustainable development which aims to control, in particular, the territory planning evolution ;> The objectives of this study are :1. An analysis of global risks across the territory, through a cartographic atlas, and multi-hazards analysis (at scale 1/50000),2. A multi risk analysis (at 1/25000) concerning two districts located in high-risk areas,3. A proposal of risk management policy.Wednesday, 29 August 2012 >6
  7. 7. Geographic context of « Pays A3V » (Asse, Verdon, Vaïre, Var)Area : 1 621,93 km²39 districts2 natural parks(Verdon & Mercantour) and one natural reservePopulation : 10 776 inhabitants (2006), average density 6 hab/km² FRANCEWednesday, 29 August 2012 >7
  8. 8. Two scales of approach A DISTRICT : Allos & CastellaneA TERRITORY : the « Pays A3V « (1 622 km²)Wednesday, 29 August 2012 >8
  9. 9. On territory scale  Cartographic atlas on scale of 1/50 000 A TERRITORY : the « Pays A3V »  Multi phenomenon analysis  Multi risk analysisWednesday, 29 August 2012 >9
  10. 10. Cartography on scale of 1/50000> For example :1- Rock falls hazard map (made by RTM 04 service, inside the project). Historic events are from the database : www.mouvementsdeterrai n.fr, RTM, and analysis of BRGM.Jeudi 26 mai 2011 > 10 10 >
  11. 11. Cartography on scale of 1/50000> For example :1- Avalanche hazard map (made by RTM 04 service, inside the project).Jeudi 26 mai 2011 > 11 11 >
  12. 12. On territory scale  Cartographic atlas on scale A TERRITORY : the « Pays A3V » of 1/50 000  Multi phenomenon analysis  Multi risk analysisWednesday, 29 August 2012 > 12
  13. 13. Multiphenome-non analysis onterritory scale> Multi hazard cartographic by number of hazardsWednesday, 29 August 2012 > 13 13 >
  14. 14. Multiphenome-non analysis onterritory scale> Multi hazard cartographic by type of hazardsWednesday, 29 August 2012 > 14 14 >
  15. 15. On territory scale  Cartographic atlas on scale A TERRITORY : the « Pays A3V » of 1/50 000  Multi phenomenon analysis  Multi risk analysisWednesday, 29 August 2012 > 15
  16. 16. Multiphenome-non analysis onterritory scale> Multi risk map by type of hazardsWednesday, 29 August 2012 > 16 16 >
  17. 17. Two DISTRICTS : On district scale Allos & Castellane  Multipheno- menon analysis (reoccuring)  Inventory and organize into a hierarchy of exposed elements  Risk analysis by type of natural disasters and by type of damage  Multi risk analysis by type > 17 of damageWednesday, 29 August 2012 > 17
  18. 18. Multiphenomenonanalysis(reoccurring)> For example :1- Historic events of avalanche inventory (data from RTM 04 service).Wednesday, 29 August 2012 > 18
  19. 19. Multiphenomenonanalysis(reoccurring)> For example :1- Historic events of rock falls and landslides (data from RTM 04 service & BRGM).Wednesday, 29 August 2012 > 19
  20. 20. Multiphenomenonanalysis(reoccurring)> For example :1- Reoccuring analysis of rapid rise in water levels (data from RTM 04 service).Wednesday, 29 August 2012 > 20
  21. 21. Two DISTRICTS : On district scale Allos & Castellane  Multipheno- menon analysis (reoccuring)  Inventory and organize into a hierarchy of exposed elements  Risk analysis by type of natural disasters and by type of damage  Multi risk analysis by type > 21 of damageWednesday, 29 August 2012 > 21
  22. 22. Inventory of exposed elements Localisation of principal exposed elements in AllosWednesday, 29 August 2012 > 22
  23. 23. Two districts : On district scale Allos & Castellane  Multipheno- menon analysis (reoccuring)  Inventory and organize into a hierarchy of exposed elements  Risk analysis by type of natural disasters and by type of damage  Multi risk analysis by type > 23 of damageWednesday, 29 August 2012 > 23
  24. 24. Analyse du risque à l’échelle d’une communeJeudi 26 mai 2011 > 24
  25. 25. Two districts : On district scale Allos & Castellane  Multipheno- menon analysis (reoccuring)  Inventory and organize into a hierarchy of exposed elements  Risk analysis by type of natural disasters and by type of damage  Multi risk analysis by type > 25 of damageWednesday, 29 August 2012 > 25
  26. 26. Risk analysis on district scale> For example results for human damages risk in winter in Allos Human damages risk Strong Medium Low Very low No riskWednesday, 29 August 2012 > 26
  27. 27. Multirisk analysis on district scale> Objectives and methodology Organize risk maps by type of damage, not depending on the type of hazard. This in order to obtain a global multirisk analysis on a district. 10 With Rij = Aj * Ej * Vij Ri = Σ Rij With i = type of damages Ej = Vaj * Exj j = type of phenomenon j=1 Risk = [Hazard * Exposed ele. (Exposure * Value)] * VulnerabilityWednesday, 29 August 2012 > 27
  28. 28. Proposal of risk management policy> Natural risk management obligations in France : the steps of the risk Objective Taking risk into consideration management process Objective Lowering the From the : Objective Reconstructing risks « Les risques naturels en Provence Alpes Côte d’Azur » Objective Anticipating the crisis Downloadable on http://plate-forme-risques-paca.brgm.frWednesday, 29 August 2012 > 28
  29. 29. Informative reports for mayorsProposal of riskmanagement policy Public reports Informative reports Reglementary reports> Natural risk management obligations in France : the different reports used From the : « Les risques naturels en Provence Alpes Côte d’Azur » Downloadable on http://plate-forme-risques-paca.brgm.frWednesday, 29 August 2012 > 29
  30. 30. Proposal of riskmanagement policy> Natural risk management obligations in France : the actors of the riskFrom the :« Les risques naturels enProvence Alpes Côte d’Azur »Downloadable on http://plate-forme-risques-paca.brgm.frWednesday, 29 August 2012 > 30
  31. 31. Proposal of risk management policy> Methodology HAZARD Existing documents Proposals for actions 1–2–3 Information french Natural disaster reports (DICRIM, DCS, Reglementary reports declaration PAC, AZI, CLPA, of crisis management (CAT NAT) + PDPFCI) + Hazard (PPR, PCS) + Hazard HazardWednesday, 29 August 2012 > 31
  32. 32. Proposal of risk management policy> Methodology For exemple : Flood hazard3 types of actions to Existing reports in Pays A3V offer from the No document district scale to Informative reports with AZI the territory Informative and reglementary reports with AZI scale :- Prevention plannings ;- Reglementation plannings ;- Crisis management.Wednesday, 29 August 2012 > 32
  33. 33. Proposal of risk management policy For exemple : Flood hazardorts in Pays A3V Actions of : - 1 : Prevention plannings ;ument - 2 : Reglementationtion reports with AZI plannings ;tion and reglementary - 3 : Crisis management with AZI Wednesday, 29 August 2012 > 33
  34. 34. Propositions d’actions> MéthodologieWednesday, 29 August 2012 > 34
  35. 35. Perspectives (for today / for the future)> Multirisk approach in the territory of Durance- High dynamic of developpement (ITER) + several natural phenomenon- Prospective analysis (Project 2012-2013)> Comparison of french and Italian multirisk approaches (RiskNat project) – Polytechnic Torino- Comparison of multirisk methodologies : French Pays A3V and Italian Piémont- Results : various analysis scale, qualitative French approach / conservative Italian approach- Evaluation of the capacity to respond in case of crisis- Work to be continuedWednesday, 29 August 2012 > 35
  36. 36. Projectde projet :: Chef manager Thank you Nathalie Marçot Nathalie Marçot n.marcot@brgm.fr n.marcot@brgm.fr Tel +33 (0)417 20 42 42 Tel 04 91 91 17 20 Fax +33 (0)4 91 17 20 40 Fax 04 91 17 20 40Service géologique Régional Provence Alpes Côtes d ’AzurJeudi 26 mai 2011

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