More Related Content Similar to LIDAR Based High Resolution Numerical Terrain Model-A Basic Tool for Major Flood Risk Assessment Romanian Danube Plain (20) LIDAR Based High Resolution Numerical Terrain Model-A Basic Tool for Major Flood Risk Assessment Romanian Danube Plain1. 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
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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
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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.
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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
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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)
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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)
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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
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12. QUANTITATIVE
DATA
Profile - Channel
(transversal)
Profile Danube
(transversal)
Profile Channel
(longitudinal)
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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
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14. 3D Area : Mehedinti Sample
View of the Western section of Danube Plain : “Portile de Fier” to Maglavid
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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
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