The Alaska Satellite Facility s InSAR Initiative Gwendolyn Bryson ASF Data Quality Engineer Jeremy Nicoll ASF Project Engineer CEOS Cal/Val Workshop, November 2011 1
InSAR Applications Massonnet et al. (1993) Seismic Events http://www.gamma-rs.ch/research/mexico.html Land Subsidence Massonnet (1997) Volcanic Hazards Strozzi and Wegmüller (1997) Forestry Image Credits: Received by CCRS Pre-processed by RSI Interpretation: Laurence Gray, CCRS Karim Mattar, Intermap Paris Vachon, CCRS CSA, 1996 Glacier Research CEOS Cal/Val Workshop, November 2011 2
Initial Project Charter Define a standardized InSAR product, generate that product, and make it readily available to the user community. CEOS Cal/Val Workshop, November 2011 3
Search and Order InSAR Pairs in User Remote Sensing Access (URSA) CEOS Cal/Val Workshop, November 2011 4
InSAR Search Features Select InSAR compatible settings to search platforms Search Restrictions: Ascending orbits Descending orbits Repeat data only Minimum InSAR stack size InSAR Help CEOS Cal/Val Workshop, November 2011 5
InSAR Results Features InSAR Tab: InSAR stacks Expand stacks to view and order granules View in Google Earth Baseline Info: Updated baseline calculations Plot of temporal versus perpendicular CSV download CEOS Cal/Val Workshop, November 2011 6
Baseline Plot Interactive Critical baseline highlighted in red Rollover granule summary Click granule to add to shopping cart Highlight area to zoom Select master directly from plot Baseline Filter CEOS Cal/Val Workshop, November 2011 7
URSA InSAR Stacks 2,091,086 granules 523,111stacks Largest stack: 142 granules 71993 139328 92416 246381 RADARSAT ERS 1 & 2 JERS-1 ALOS PALSAR CEOS Cal/Val Workshop, November 2011 8
Beta InSAR Product Packages CEOS Cal/Val Workshop, November 2011 9
ROI PAC & MapReady ROI PAC creates coherence image and interferogram MapReady geocodes coherence image and interferogram UTM Amplitude UTM Coherence UTM Interferogram ALPSRP075426440-ALPSRP088846440.amp.jpg ALPSRP075426440-ALPSRP088846440.coh.jpg ALPSRP075426440-ALPSRP088846440.int.jpg CEOS Cal/Val Workshop, November 2011 10
Beta Product Packages UTM_GEOTIFF.tgz file containing interferogram, coherence image, and amplitude image Geocoded to UTM projection Stored in GeoTIFF format COMPLEX_PAIR UTM_GEOTIFF Complex SLC Master and Slave data in ROI PAC format CEOS Cal/Val Workshop, November 2011 11
Beta Product Packages COMPLEX_IGRAM UTM_GEOTIFF Complex interferogram in ROI PAC format COMPLEX_PAIR_AND_IGRAM UTM_GEOTIFF COMPLEX_PAIR COMPLEX_IGRAM CEOS Cal/Val Workshop, November 2011 12
Future: Enhanced InSAR Services CEOS Cal/Val Workshop, November 2011 13
InSAR Tiger Team Gerald Bawden Brian Conway Eric Fielding Rick Forster Nettie La Belle-Hamer Franz Meyer Marc Simard Paul Siqueira Bernd Scheuchl CEOS Cal/Val Workshop, November 2011 14
Future Phases 1. Include InSAR browse images in URSA CEOS Cal/Val Workshop, November 2011 15
Future Phases 1. Include InSAR browse images in URSA 2. Implement data discovery based on browse images and quality control measures Baseline Coherence CEOS Cal/Val Workshop, November 2011 16
Future Phases 1. Include InSAR browse images in URSA 2. Implement data discovery based on browse images and quality control measures 3. Provide additional InSAR custom processing options: Geocoded Terrain Corrected Phase Unwrapped CEOS Cal/Val Workshop, November 2011 17
Future Phases 1. Include InSAR browse images in URSA 2. Implement data discovery based on browse images and quality control measures 3. Provide additional InSAR custom processing options 4. Create user scratch space and/or InSAR datapool CEOS Cal/Val Workshop, November 2011 18
NASA ROSES ACCESS Advancing Collaborative Connections for Earth System Science Define and make available new QC InSAR parameters and products Enhance access to UAVSAR interferograms Uniform access to independent InSAR archives Establish InSAR product data archive with UNAVCO/WInSAR CEOS Cal/Val Workshop, November 2011 19
The Alaska Satellite Facility s InSAR Initiative Before Topo-Phase Compensation After Topo-Phase Compensation After Terrain Correction and Geocoding Gwendolyn Bryson ASF Data Quality Engineer Jeremy Nicoll ASF Project Engineer CEOS Cal/Val Workshop, November 2011 20