TH4.L09 - GEOLOGICAL AND GEOHAZARD APPLICATIONS OF RADARSAT-2
Transcript of TH4.L09 - GEOLOGICAL AND GEOHAZARD APPLICATIONS OF RADARSAT-2
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Geological and Geohazard Applications of RADARSAT 2
Vern SinghroyFrancois Charbonneau
Goran PavlicKevin Murnaghan
Junhua Li
Canada Centre for Remote Sensing
Canada Centre for Remote Sensing
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Objectives
Geohazards• Provide examples of RADARSAT 2 InSAR
applications to monitor landslides along strategic transportation and energy corridors in Canada- focusing on different triggering mechanisms and rates of movement
Geology• Insights into RADARSAT 2 polarimetric scatter
of exposed rock units e.g Haughton Crater, Canadian Arctic
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Debris flows
Landslides in Cretaceous
Shale
Retrogressive earthflows
Rockfalls
Rotational slumps
Landslides in Canada
Coastal Landslides
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Mackenzie River
-20 200
Deformation in slant direction (mm)
Radarsat-1 Summer 2006 (24 days)
InSAR Monitoring of Permafrost Activity along the Mackenzie Valley pipeline corridor
InuvikSite
Norman Wells
ProjectedPipeline Corridor
ProjectedPipeline Corridor
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Mackenzie Valley Pipeline route: Landslide regression on Permafrost
0
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0 2 4 6 8 10 12 14 16
Height of scarp wall, H (m)
Sc
arp
wa
ll r
etr
og
res
sio
n r
ate
, R
(m
/yr)
Rmax
Ravg
Rmin
Retrogressive Thaw Side on Permafrost: Mackenzie Valley Pipeline Route
Coastal Landslide Daniels Harbour, NF
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Slope Angle, A (º)
Sca
rp w
all r
etro
gre
ssio
n, R
(m
/yr) Rmax
Rav g
Rmin
Pipeline route
Field Geotechnical Data on Landslide Regression rates
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Monitoring a Retrogressive Thaw Slide on
Permafrost using RADARSAT InSAR.
Landslide
-20 200
Deformation (mm)
Corner Reflector
August 21,2006
N
TR06
TR03
TR07
R1-F4F R2-U18 50mm/y
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Monitoring a Retrogressive Thaw Slide on
Permafrost using RADARSAT 2 InSAR.
Landslide
-20 200
Deformation (mm)
Corner Reflector
August 21,2006
N
TR06
TR03
TR07
R1-F3F R1-F4F R2-U18
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Turtle Mountain before Slide Immediately after SlideTurtle Mountain before Slide Immediately after Slide
Fold in Banff Formation clearly exposed (Alberta Geological Survey)
McConnell & Brock (1904): Unstable geological structure main reason of slide
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View from Interpretive Centre View from Interpretive Centre EastEast WestWest
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South Peak, Turtle Mountain, Alberta
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-60
-40
-20
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2008 2009 2010 2011
Time (Years)
Ver
tica
l dis
pla
cem
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(mill
imet
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a
c
Frank Slide: Monitoring subsidence from RADARSAT InSAR (2000-10)
RADARSAT-1
RADARSAT 2
30mm/y
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Slope movements affecting Alaska Highway and Gas Pipeline
Corner Reflectors
Location
Stratigraphy
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-35
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Time
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isp
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m]
CR 1 CR 2 CR 3 CR 4 CR 5 CR 6
InSAR deformation monitoring on deep seated Landslide affecting the Alaska Highway
15mm/y
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Corner Reflector InSAR at Little SmokyCorner Reflector InSAR at Little SmokyDeep Seated Landslides, Alberta: In SAR results
40mm/y
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Corner Brook, Newfoundland
Riverside Drive, April 1994.
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-60 0 60
Vertical displacement [mm]
Corner Brook, NF DinSAR – Coastal Landslide Displacement Map
Data used in differential interferometric processing:1) RADARSAT 2 – Ultra Fine Inc. Angle = 36.81° Master: 20090623 Slave: 20100618 Ascending Orbit Perpendicular Baseline: 41 m2) Lidar DEM 1 m
Deformations are only shown where scene coherence exceeds 0.5
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Daniel’s Harbour
The houses are constructed on a marine terrace with a surface elevation of about 24 m above present sea level. The Northern Peninsula Highway is located about 20-70 m inland of the cliff edge, between which 14 buildings were located.
October 20, 2006
April 15, 2007
Newfoundland, Canada
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InSAR Displacement Map
RADARSAT-2 Ultra Fine Master: 20090610Slave: 20090914Descending OrbitPerpendicular Baseline: 67 m
Deformations are only shown where the scene coherence exceeds 0.5
RADARSAT-2 - 3x3 multi look intensity image
-50 0 50
Vertical displacement [mm]
April 2007
There is no an existing high resolution DEM. Therefore, 3-pass differential interferometric processing applied to monitor the temporal evolution of landslide.
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RADARSAT-2 S5Sep 09, 2008 – Jan 28, 2010
-12 -6 0 6 12
Vertical displacement [cm] N
RADARSAT-2 Vertical Displacement Map – Port-au-Prince - Haiti
Canada Centre for Remote Sensing
Singhroy and Pavlic, CCRS, Feb 2010
Epicentre - January 12 , 2010--Mag 7.0
N
26-Aug-09 25-01-10 28-01-10
5 km
“RADARSAT-2 Data and Products © MacDONALD, DETTWILER AND ASSOCIATES LTD. (2010) – All Rights Reserved”
and “RADARSAT is an official mark of the Canadian Space Agency”
26-08-09
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50 Largest Impact Craters
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NASA/CSA-Mars analogue research site
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Geology of Haughton Impact Structure Modified after Thorsteinsson and Mayr()
RADARSAT 2 Polarimetric signatures of the impact melt breccias and carbonates at units Haughton Crater, Devon Island, Canadian Arctic.
RADARSAT 2HH,HV(HH/HV)
Composite image
-14.8dB HH
13.3dB VV
-9.3dB HH
-9.2dB VV
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Conclusion
• RADARSAT 2 InSAR techniques have monitored the seasonal variability of landslide motion of different landslides affecting Canadian strategic transportation energy corridors. With the launch of the RADARSAT constellation, we will be able to monitor these high risk areas on a weekly basis for improved mitigation measures, thereby reducing the $M150/y we spend on repairs.
• The identification of impact crater melt breccias from the host rocks at the Haughton Crater based on R2 polarimetric signatures will lead to improved mapping of other impact craters.