Brian Bruckno, Ph.D.Virginia Department of Transportation

Validation of New Applications for Interferometric Synthetic Aperture Radar

[InSAR] Data: Geohazards and Infrastructure Distress

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

The views, opinions, findings, and conclusions reflected in this paper are the responsibility of the authors only and do

not represent the official policy or position of the USDOT/RITA, or any state or other entity

RITA-10 ProjectU.S. DOT Research and Innovative Technology

Administration No. RITARS-11-H-UVA “Sinkhole Detection and Bridge/Landslide Monitoring for Transportation Infrastructure by Automated Analysis of Interferometric

Synthetic Aperture Radar Images”

Core Team:

• Dr. Scott Acton Ph.D. (P.I.), UVA• Dr. Edward Hoppe, Ph.D., VCTIR• Dr. Brian Bruckno, Ph.D., VDOT• Stacey Roosa, VDOT• Elizabeth Campbell, VDOT

• Dr. William Niemann, Ph.D., Marshall University• TRE Canada

• Andrea Vaccari, Michael Steuchli, UVA

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

InSAR

Interferometric Synthetic Aperture Radar

R1

R2

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

•COSMO-SkyMed (ISA)•32 images collected over ~1 year

•X-band •Millimeter-scale accuracy in

elevation measurements

InSAR

ESRI ArcMap10.0, TRE dataset, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

40 km40 km

InSAR

298,956 InSAR Points (“Scatterers”)

Each scatterer is associated with a history of motion: Displacement, Velocity, Acceleration, Coherence, and Effective Area

ESRI ArcMap10.0, TRE dataset, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

40 km40 km40 km40 km

InSAR

ESRI ArcMap10.0, TRE dataset, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

InSAR

ESRI ArcMap10.0, TRE dataset, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Karst

ESRI ArcMap10.0, TRE dataset, DMME Data, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Karst

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Scatterer Acceleration and Velocity With Respect to Proximity to Mapped Sinkholes

Proximity

Kinematic

Entire Dataset

Away-from Sinkhole

Within Sinkhole

Acceleration -1.11 -1.76 -2.24

Proximity

Kinematic

Entire Dataset

Within100 ft

100 to 200 ft

200 to 300 ft

300 to 400ft

Velocity +0.22 -0.21 -0.07 -0.03 -0.045

Karst

ESRI ArcMap10.0, TRE dataset, DMME Data, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Karst

ESRI ArcMap10.0, TRE dataset, DMME Data, VAGISP Base

POINT AEO68

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

AqDate

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Karst

Vesuvius Sinkhole Summer /Fall 2012 (Hoppe)

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Bridges

ESRI ArcMap10.0, TRE dataset, VAGISP Base

POINT A6RGE

-12

-10

-8

-6

-4

-2

0

AqDate

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Bridges

Route NOS Bridge February 2013 (Hoppe)

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Bridges

Route NOS Bridge February 2013 (Bruckno)

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Buttresses

ESRI ArcMap10.0, TRE dataset, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Buttresses

ESRI ArcMap10.0, TRE dataset, VAGISP Base

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Buttresses

Greenville Rock Buttress Winter 2013 (Bruckno)

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Buttresses

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Greenville Rock Buttress Winter 2013 (Bruckno)

Buttresses

Greenville Rock Buttress Winter 2013 (Bruckno)

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Buttresses

Greenville Rock Buttress, Niemann raw data/SiroVision

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

Rock Slopes

ESRI ArcMap10.0, Niemann raw data, Bruckno DEM, VAGISP Base

Broad Failure Mode

Field Conditions

Rock Slopes

Low-angle Wedge Failures

ESRI ArcMap10.0, Niemann raw data/SiroJoint, Bruckno DEM, VAGISP Base

SiroJoint

Rock Slopes

Low-angle Wedge Failures

ESRI ArcMap10.0, Niemann raw data/SiroVision, Bruckno DEM, VAGISP Base

EA :724C : .89Vel: -2.12Acc: -23.65

ESRI ArcMap10.0, Bruckno DEM, VAGISP Base

Rock Slopes

EA :491C : .88Vel: -5.1Acc: -22.51

EA :624C : .89Vel: -7.32Acc: -19.84

Conclusion

•InSAR data and metadata validated for:

•Karst inventory

•At-risk bridges

•Rock buttress inventory and behavior

•Rock slopes inventory and behavior

RITA-10Project

InSAR

Geohazards and Assets

Conclusion

Karst

Bridges

Buttresses

Slopes

This is a one-million dollar hole in the ground.

This is a one-million dollar hole in the ground.

Thank you.Comments and

questions welcome.