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Global Risk Forum – IDRC - DAVOS 2008
LIDAR Based High Resolution Numerical Terrain Model
    Basic Tool for Major Flood R...
PROBLEM ???
                         • Floods Spring 2006 - extreme event?
                         • Humans and $$$ dimen...
Environmental Ministry and Sustainable development
     of Romanian government :research study :
                23.11.200...
GP al t sate




                      GPS double frequency
  re
   S ime llite




                                      ...
REELD (Economical and Ecological
  Reconstruction of the Danube Flood Plain )

       EMERGENCY of Field Campaign


• Surf...
The principle of LIDAR technique




                   ©ESY2008 Copyright
Airborne
              LIDAR
       PartenAvia (APEI SA)

                   DTM-LIDAR flight parameters                 V...
Flight tracks along the Danube river-Romanian section of the river




                           ©ESY2008 Copyright
©ESY2008 Copyright
s
                                                     ng
     GALATI SHIPYARD                               i
           ...
TOPOGRAPHICAL PROFILES
      -SAMPLES-




      ©ESY2008 Copyright
QUANTITATIVE
   DATA
                                       Profile - Channel
                                         (tr...
Bands from LIDAR: length of
                     15 km and width of 500 meters
                     each
                 ...
3D Area : Mehedinti Sample




View of the Western section of Danube Plain : “Portile de Fier” to Maglavid
               ...
FLOOD HYDROLOGIC SIMULATION




          ©ESY2008 Copyright
Conclusion (s)
    Done 650.000 ha
•   Delta Z = 5 cm
•   Delta X/Y = 3-5 points/m2
•   1 point for each inhabitant of the...
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LIDAR Based High Resolution Numerical Terrain Model-A Basic Tool for Major Flood Risk Assessment Romanian Danube Plain

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LIDAR Based High Resolution Numerical Terrain Model-A Basic Tool for Major Flood Risk Assessment Romanian Danube Plain

  1. 1. Global Risk Forum – IDRC - DAVOS 2008 LIDAR Based High Resolution Numerical Terrain Model Basic Tool for Major Flood Risk Assessment Romanian Danube Plain PUBLIC PRIVATE I. Balin, I. Nichersu, M. Memier , R. Stiuca, E. Marin , L. Galisson, N. Libralesso, M. Mierla, A. Covasnianu, M.M. Cazacu, D. Constantin , Contact EnviroScopY SA D Balin, IN ioan.balin@enviroscopy.com ………………….. CD Phone +41 21 693 9000 DD ©ESY2008 Copyright
  2. 2. PROBLEM ??? • Floods Spring 2006 - extreme event? • Humans and $$$ dimensions • MMDD (RO) - new defense dams&lines SOLUTION !!! • RE consideration of Danube Flood Plain – Risk Management and Assessment • DTM – Digital Terrain Modeling – LIDAR airborne technique ©ESY2008 Copyright
  3. 3. Environmental Ministry and Sustainable development of Romanian government :research study : 23.11.2006 for 15.12.2007 Danube Delta National Institute of Research and Development Tulcea – Romania Collaborators: PUBLIC INHGA – Bucharest (RO) ISPIF – Bucharest (RO) EnviroScopY SRL (ESY- RO) EnviroScopY SA ( ESY- CH) PRIVATE -SINTEGRA ( FR) Co-Sponsor Communications : Vodafone S.A. ©ESY2008 Copyright
  4. 4. GP al t sate GPS double frequency re S ime llite REAL TIME co rr fro s ec m GPS BASED tio th ns e in Inertial device Navigation System Laser scanning GPS double frequency reference station ©ESY2008 Copyright
  5. 5. REELD (Economical and Ecological Reconstruction of the Danube Flood Plain ) EMERGENCY of Field Campaign • Surface Requested: 7000.000 ha • Surface Wide is variable: 1 to 80 km • Length 1075 km (Danube in Romania) ©ESY2008 Copyright
  6. 6. The principle of LIDAR technique ©ESY2008 Copyright
  7. 7. Airborne LIDAR PartenAvia (APEI SA) DTM-LIDAR flight parameters Value Flight alltitude 450 m Speed flight 45 m/s Band width 520 m 20% Lateral coverage bands/Overlapping Distance between bands 415 m Laser emmision frequency 65 kHz 60 (+/- 100) 0 Scanning angle Scanning frequency 75 Hz (Standard deviation) total planimetric precision 20 cm 4-5 of the measured laser points pts/m2 2 Medium density of laser points 3-5 pts / m Medium distance between laser points (flight direction and 0,6 m perpendicular) ©ESY2008 Copyright
  8. 8. Flight tracks along the Danube river-Romanian section of the river ©ESY2008 Copyright
  9. 9. ©ESY2008 Copyright
  10. 10. s ng GALATI SHIPYARD i ild Bu e ub Digital Terrain Model (DTM) n Da GROUND (no vegetation) plan ted f o rest m Da se en f De TULCEA AREA es e Tr ©ESY2008 Copyright
  11. 11. TOPOGRAPHICAL PROFILES -SAMPLES- ©ESY2008 Copyright
  12. 12. QUANTITATIVE DATA Profile - Channel (transversal) Profile Danube (transversal) Profile Channel (longitudinal) ©ESY2008 Copyright
  13. 13. Bands from LIDAR: length of 15 km and width of 500 meters each The intensity of LIDAR signal’s echo („albedo”). Danube - black color in the left, that means lack of LIDAR signal. Altitude- Danube in black color, the higher areas – green to red. Altitude class i.e. low vegetation Ground DTM: see clearly the Danube, the hills ©ESY2008 Copyright
  14. 14. 3D Area : Mehedinti Sample View of the Western section of Danube Plain : “Portile de Fier” to Maglavid ©ESY2008 Copyright
  15. 15. FLOOD HYDROLOGIC SIMULATION ©ESY2008 Copyright
  16. 16. Conclusion (s) Done 650.000 ha • Delta Z = 5 cm • Delta X/Y = 3-5 points/m2 • 1 point for each inhabitant of the EARTH ! To be done: (1) Absolute Z – RO calibration STEREO 70 ?! (2) Danube Delta extension !!! Contact EnviroScopY SA ioan.balin@enviroscopy.com Phone +41 21 693 9000 ©ESY2008 Copyright

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