Product Forms relating to WG4 – Geology

Product Forms relating to
WG4 – Geology - Geohazards
S. Hosford
ORFEO GT4GT4-2-3 meeting – 14th May, 2007 – CNES Paris
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WG4 Product forms
Product forms were generated early in the ORFEO programme to
facilitate the creation of links between researchers working on science
questions (“thematic”), and those working on methodological issues.
WG4 produced 8 product forms (of which 2 produced studies):
Y. Klinger / R. Michel –
“Imagerie failles actives et séismes”
C. Delacourt -
“Imagerie Mouvements Gravitaires”
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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8 Product sheets
Subsidence
SOLDATA/BRGM
Erosion
BRGM
Active fault and co-seismic maps
IPGP /CEA
Glacial lakes
LISTIC
Mass budget on Glaciers
LEGOS
Gravity-induced motions
IUEM
Cartography of damage
IRSN
Monitoring active volcanoes
IPGP
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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WG4 related Product Forms
Working Group 2 “Risk” also produced a number of
relevant product forms
Describing “emergency response” needs
• SERTIT – earthquake, landslide/mudslide, volcanic eruption
• UNOSAT – landslide
Also desire to move toward the prevention and mitigation
stages of the disaster management cycle by exploiting the
information derived during the disaster
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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Data needs
Landslide – post crisis emergency response,
study/monitoring of the phenomenon
Image and DTM pre et post crisis
Zones identified as landslide zone + affected zones
Change detection
Precise measurement of displacement
Combination with in situ monitoring techniques (eg. GPS)
Resolution and area covered
1:25000, 1:10000, 1:5000
Small areas (100m2), areas up to 100km by 100km (detection of events)
Geographical coverage and frequency
Pays du Sud : Asie, Afrique, Amérique du Sud, et zones tropicales
10 to 30 incidents per year
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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Earthquake - hazard mapping
Data needs
Image and DTM pre et post crisis for geological interpretation
Precise measurement of ground displacement
Monitoring should be continued weekly for up to 2 months following the event
Resolution and area covered
1m résolution spatiale
For an earthquake 300km by 10km
For preventive active fault mapping 1000km by 10km
Total active faults > 100000km
Geographical coverage and frequency
Seismicly active areas eg. those highlighted in the Global Seismic Hazard
Map
1 to 3 major seismic events per year
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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Earthquake – post crisis emergency response
Data needs
Classification of damage
Information on safe and dangerous areas within the affected zone,
infrastructure for relief services
Resolution and area covered
1m spatial resolution
Upwards of 40km2
Geographical coverage and frequency
Seismicly active areas eg. those highlighted in the Global Seismic Hazard
Map
around 5 major seismic events internationally per year
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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Volcano – Monitoring
Data needs
Precise measurement of ground displacement
Important changes in vegetation (linked to degasing)
Weekly monitoring required on around 50 volcanos worldwide
Resolution and area covered
1m spatial resolution
Several km2
Geographical coverage and frequency
Weekly monitoring on 50 volcanos worldwide defined in ?? project
ORFEO WG4WG4-2-3 meeting – 14th May, 2007 – CNES Paris
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