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“Prevention and Management of Physical Disasters and the surveyor’s involvement.”

“Prevention and Management of Physical Disasters and the surveyor’s involvement.”. by Emmanuel Ouranos Hellenic Mapping and Cadastral Organization, Director Dipl. Surveying Engineer, Msc Regional Development ex CLGE delegate, representative of HARSE.

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“Prevention and Management of Physical Disasters and the surveyor’s involvement.”

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  1. “Prevention and Management of Physical Disasters and the surveyor’s involvement.” by Emmanuel Ouranos Hellenic Mapping and Cadastral Organization, Director Dipl. Surveying Engineer, Msc Regional Development ex CLGE delegate, representative of HARSE

  2. The statue of Victory at the Olympic site, in front of the forest fire

  3. TSUNAMI image of a natural disaster

  4. Number of natural disasters recorded per year 1900-2005 Number of natural disasters recorded per year 1900-2005

  5. I.    The systematic approach of Natural Hazards and Natural Disasters • The growing strength, frequency, large scale and long duration of natural hazards recently, was the cause of : • The systematic study of natural risks, the logical planning of public and private works and the estimation and prediction to minimize the risk

  6. II. The role of the surveyor in the prevention and management of Natural Hazards. The news from Greece are the following: ·   HEPOS, the Hellenic Positioning System is ready, with 100 ground stations in use. As part of European Spatial Data Infrastructure. It will help to connect Geodesy and the Cadastre frameworks. ·   ORTHOPHOTO MAPS, 1:5.000 scales coming from new air photos will be ready soon, for the total area of the country.

  7. ·        CADASTRAL OFFICES in the place of 100 mortgages offices are now in work in nearly 1/3 of these offices. It is an important step to the final goal of having a new modern and operational Greek Cadastre. ·        FOREST and COASTAL MAPS will be soon prepared for all Greece. Special forest maps for all the country, that means for 20% of the country area. ·        LPIS (Land Parcel Information System) is a GIS system with all parcels with olive trees and vineyards for 4 million hectares. This mapping is done in scales 1:10.000 and print in 1:5.000.

  8. The question is what all this has to do with the Prevention and Management of Physical Hazards and Disasters? • After a big forest fire, comes the loss of public property. Speaking of natural hazards, these are the following: • Seism, Tsunamis, Volcano’s Explosions, Inundations, Floods, Strong Rainfalls, Snowfalls, Strong Winds-Typhoons, Forest and city Fires, Coastal corrosion, Land corrosion, Land Devastation, Changes of sea Level, Landslides. • The first picture we have in mind is the map of the area where the disaster occurred. And we, the surveyors are the specialists to create this map, the G.I.S.

  9. The following analysis is prepared: ·      The Hazard Assessment, ·       The Exposure to Danger, ·       The Vulnerability to Damages. They are all presented in various maps and GIS.

  10. The maps of roads and highways give us the necessary information and the base to create a general plan to manage a big disaster with the minimum loss.

  11. The result of a flood in some ancient ruins

  12. EU order 2007/60HazardRiskVulnerabilityFlood riskFlood hazard mapFlood risk map

  13. Preliminary flood risk assessment • Flood hazard maps • Flood risk maps • Flood risk plans 22December 2011 22 December 2013 22 December 2015

  14. DAM The Example of Rapendosa

  15. The photogrammetric analysis:Color air photos(September2005) –Scale 1:15.000 (Army Geographic Departement)High Definition Digital Ground ModelReference Points every 25mThe Rapendosa Vacuum  14 photos , in 3 lines

  16. The ground model

  17. The Land Use

  18. The Flood estimation map

  19. III.    Satellite monitoring changes on the Earth’ surface. In Dionysos Satellite Observatory, among other works, under the direction of NTUA professor D. Paradeisis, is possible the teledetection of small landslides , floods, volcano’s action, any physical risks, through satellite radar (SAR – Synthetic Aperture Radar). Especially by the technology of SAR Interferometry and Dynamic InSAR Tracking, monitoring in real time is now possible, in collaboration with NASA Space Flight Center.

  20. Interferometry’s example INSAR Tracking

  21. IV.              Conclusions. • The involvement of the Surveying Engineer. It is obvious now that surveying engineers have to do with the prevention and management of Physical Hazards and Disasters.

  22. References: • 1.    Space radar technology and Physical Disasters. B. Massinas , D. Paradeisis. NTUA. • 2.    The involvement of the Geodetic Surveyor in the Prevention and Management of Physical Disasters. John Presvelos. HARSE. • 3.    Systematic Analysis of Physical Hazards. G. Tsakiris. NTUA. • 4.    LPIS. Land Parcels Identification System and physical disasters. D. Sxisodimou. HARSE. • 5.    The HEPOS and its foreseeable implications on the SPI in Greece. Demitris Delikaraoglou. FIG comm. 3, 2007.

  23. . Thank you for your attention!  Any questions? 

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