Upload
buddy-adams
View
214
Download
0
Tags:
Embed Size (px)
Citation preview
Page 1
Alain Arnaud, CEO
Contribution to GEOSSSatellite InSAR – PSI
for ground displacement mapping
Alain ARNAUD, CEO
Page 2
InSAR motion mapping basics and current projects
- 3 cm
SubCoast
3 cm
Travel phase between ground and sensor gives mmtric distance
Radar satellites
Difference between two measurements indicates ground movement over time
First measurement Second measurement (afterwards)
In terferometric
S ynthetic
A perture
R adar
Superimposition of waves to detect differences
High resolution radar system
=
=
PanGEO
Results
Ground movement time series
InSAR ground motion data utilised in a multiude of geo-hazard focused projects
Ground movement rate maps
Page 3
• Traditionally InSAR analysis of local area or of single phenomena = inefficient
• Advanced algorithms to process full image data frames rapidly and allow multiple applications of data
• Methodology will be applicable to Sentinel-1 data to allow rapid wide area motion maps to be produced
• Method for integrating multiple track datasets into a single motion map
• Resulting datasets can be freely viewed
• Resulting datasets can be used for multiple applications of InSAR to Geo Hazards
• To allow continental scale and future worldwide ground motion dataset
Wide area map initiative of Terrafirma
Process large land-masses as one dataset – one dataset ….. many applications
Page 4
Wide area map initiative of Terrafirma
SPACE SEGMENTSENTINEL 1
• Traditionally InSAR analysis of local area or of single phenomena = inefficient
• Advanced algorithms to process full image data frames rapidly and allow multiple applications of InSAR to Geo Hazards
• Methodology will be applicable to Sentinel-1 data to allow rapid wide area motion maps to be produced
• Method for integrating multiple track datasets into a single motion map
• Resulting datasets can be freely viewed
• To allow continental scale and future worldwide ground motion dataset
NEW CONCEPT and NEW ALGORITHMS for a NEW PRODUCT
Process large land-masses as one dataset – one dataset ….. many applications
Page 5
• Wide area map for survey & ongoing local studies with VHR SAR
• Wide area ground motion data – strain data for EPOS and GEM etc
• Volcano activity monitoring: inflation/deflation cycle
• Mining induced subsidence
• Abandoned mine re-watering uplift
• Karst Geology – sink hole formation
• Dike stability
• Subsidence monitoring of flood prone areas
Mine subsidence Karst Geology
Volcanics
Tectonics
Landslides
Flooding
InSAR Benefits for Disasters: GeoHazards mapping
Many applications can be served from one InSAR ground motion dataset