DevEX - reference for building teams, processes, and platforms
Floods & Landslides
1. RS & GIS Applications
FLOODS & LANDSLIDES
Lokhaze Ali
2. Hadith
• Allah's Messenger (peace be upon him) said, "When Allah
created the Earth it began to oscillate, so He created the
mountains, ordered them onto it, and it became steady. The
angels marvelled at the strength of the mountains and asked
their Lord whether there was anything in His creation stronger
than the mountains. God said, "Yes; iron is stronger than
mountains (rocks), for it breaks them." The angels said, "O Lord!
Is there anything of Thy creation stronger than iron?" God said,
"Yes; fire is stronger than iron, for it melts it." And the angels
said, O Defender! Is there anything of Thy creation stronger
than fire?" God said, "Yes; water overcomes fire; it kills it and
makes it cold." Then the angels said, "O Lord! Is there anything
of Thy creation stronger than water?" God said, "Yes; wind
overcomes water: it agitates it and puts it in motion." They said,
"O our Cherisher! Is there anything in Thy creation stronger
than wind?" God said, "Yes, the children of Adam, giving alms;
that is, those who give with their right hands and conceal if
from their left, they overcome all."
5. Rainfall and Flood Forecast
Simulation in 3D
• http://www.youtube.com/watch?v=DtZ-
oMG_sQk&feature=related
6. Linked: Extreme Russian Fires
and Pakistan Floods
• Two of the most destructive natural disasters of
2010 were closely linked by a single meteorological
event, even though they occurred 1,500 miles
(2,414 km) apart and were of completely different
natures, a new NASA study suggests. The research
finds that the same large-scale meteorological
event -- an abnormal Rossby wave -- sparked
extreme heat and persistent wildfires in Russia as
well as unusual downstream wind patterns that
shifted rainfall in the Indian monsoon region and
fueled heavy flooding in Pakistan.
• http://www.youtube.com/watch?v=UroG2DS3xsg
8. Nor'easter Floods - GOES
Satellite
• This video of GOES satellite imagery
was created from data compiled March
8 through 16, 2010. It shows flooding
rains from a Nor'easter that soaked
the U.S. Northeast.
• http://www.youtube.com/watch?v=CHIF
VHhTZPA
9. Mississippi Flooding 2011
• http://www.youtube.com/watch?v=kOW
AjkHF1hA
or watch it at
• http://www.nasa.gov/multimedia/videog
allery/index.html?media_id=89318101
11. Global Landslide Risks
• Reduce the loss of life from
landslides
• Global, satellite-based early-warning
system
• Landslide-prone regions, as shown in
this image
• Coarse soil, land cover that was
inadequate to stabilize the surface,
and/or steep mountains
• The regions that have the highest
risk of landslides are salmon pink
• Areas of moderate risk are lavender
• Regions with a slight risk are pale
blue
• Areas where landslides occurred
between 2003 and 2006 are marked
with black dots on this map
12. Landslides-What they are & their
causes
• http://www.youtube.com/watch?v=JrV4
uCVwmfk&feature=related
15. ANALYSIS AND PREDICTION OF LANDSLIDES
IN GIS (GEOGRAPHIC INFORMATION SYSTEMS)
• Most landslide potential
models determine terrain
instability by combining slope
maps with soils data, then
selecting from the resultant
soil/slope categories the
combinations that are rated
for severe erosion potential.
Vegetative cover
considerations extend the
model. When available, maps
showing historic landslide
sites are added for both
establishing and testing
landslide potential.
16. SHALSTAB Landslide Model
• SHALSTAB landslide
potential model works
best with detailed
elevation data. A Digital
Elevation Model
(DEM) spatial resolution
of 10 meters is
desired. Raster-to-
Vector procedures are
used to convert base
maps to project grid
and raster-to-vector
procedures are used to
output a model.