JOURNEES THEMATIQUES
ORFEO/PLEIADES
Réunion thématique GT4 (Géophysique)
Etat de l’art et projets en Imagerie HR
pour les Sciences de la Terre :
Volcans: P. Briole /ENS
Volcans du monde
Caractéristiques des volcans
• Présence de relief
– Parfois des glaciers
• Déformations du sol
• Fractures
• Anomalies thermiques
– Très chaudes
– Tièdes
• Positions connues
• En général, existence de précurseurs
Pourquoi faut-il de la haute résolution?
• Pour voir des objets petits:
– Coulée de lave
– Fissure
• Pour voir les changements
d’objets assez petits
– Domes de lave
– Glaciers
• Pour mesurer l’épaisseur de
dépôts
• Quelques références
– The changing shapes of active volcanoes: History, evolution, and future
challenges for volcano geodesy, Poland et al., JVGR, 2006
– Advances in the remote sensing of volcanic activity and hazards, with
special consideration to applications in developing countries, Ernst GGJ
et al., IJRS, 2008
Connaître le relief
• Digital photogrammetry and kinematic GPS applied to the monitoring of
Vulcano Island, Aeolian Arc, Italy, Baldi et al., GJI, 2000
• Validation and comparison of different techniques for the derivation of digital
elevation models and volcanic monitoring (Vulcano Island, Italy), Baldi et al.,
IJRS, 2002
• Application of digital terrain model to volcanology, Baldi et al., Annals of
Geophysics, 2006
• Integration of ground-based laser scanner and aerial digital photogrammetry for
topographic modelling of Vesuvio volcano, Pesci et al., JVGR, 2007
Connaître les variations du relief
• Digital photogrammetry as a tool in analogue
modelling: applications to volcano instability,
Donnadieu et al., JVGR, 2003
• Deformation between 1989 and 1997 at Piton
de la Fournaise volcano retrieved from
correlation of panchromatic airborne images,
de Michele et al., GRL, 2007
• High precision photogrammetry for monitoring
the evolution of the NW flank of Stromboli
volcano during and after the 2002-2003
eruption, Baldi et al., Bull Volc., 2008
• Monitoring lava-dome growth during the
2004-2008 Mount St. Helens, Washington,
eruption using oblique terrestrial photography ,
Major et al., EPSL, 2009
• The evolution of the Sciara del Fuoco
subaerial slope during the 2007 Stromboli
eruption: Relation between deformation
processes and effusive activity, Marsella et al.,
JVGR, 2009
Suivi des dômes de lave
• Discrimination of lava dome activity styles using satellite-derived thermal
structures, Wooster et al., JVGR, 2000
• Growth mechanism of the 1944 lava dome of Usu volcano in Hokkaido, Japan,
Yokoyama I, Proc. Japan Acad, 2002
• Exogenous and endogenous growth of the Unzen lava dome examined by
satellite infrared image analysis, Kaneko et al., JVGR, 2002
• Lava dome growth and mass wasting measured by a time series of groundbased radar and seismicity observations, Wadge et al., JGR, 2008
• Modelling the lava dome extruded at Soufriere Hills Volcano, Montserrat,
August 2005-May 2006 Part I: Dome shape and internal structure, Hale et al.,
JVGR, 2009
Suivre les fractures
• Sequence of faulting and deformation during the 2000 eruptions of the Usu
Volcano, Hokkaido, Japan - interpretation and image analyses of aerial
photographs, Yamagishi H et al., Geomorphology, 2004
• Mechanical discontinuities monitoring at Merapi volcano using kinematic
GPS, Beauducel et al., JVGR, 2006
• Pits, rifts and slumps: the summit structure of Piton de la Fournaise, Carter
et al., 2007
Glaciers
• Impact of the eruptive activity on glacier evolution at Popocatepetl Volcano
(Mexico) during 1994-2004, Julio-Miranda et al., JVGR, 2008
Mesurer les anomalies thermiques
• Exogenous and endogenous growth of
the Unzen lava dome examined by
satellite infrared image analysis, Kaneko
et al., JVGR, 2002
• Lava effusion rates from hand-held
thermal infrared imagery: an example
from the June 2003 effusive activity at
Stromboli, Harris et al., Bull Volc, 2005
Detection of a new summit crater on
Bezymianny Volcano lava dome:
satellite and field-based thermal data,
Carter et al., Bull Volc, 2007
• Testing satellite and ground thermal
imaging of low-temperature fumarolic
fields: The dormant Nisyros Volcano
(Greece), Lagios et al., JPRS, 2007
Suivi tous temps
• Potential of ground based radar for the monitoring of deformation of
volcanoes, Malassingne et al., 2001
• Ground-based SAR interferometry for monitoring mass movements,
Antonello et al., Landslides, 2004
• AVTIS: A novel millimetre-wave ground based instrument for volcano
remote sensing, Wadge et al., JVGR, 2005
• Deformation of Stromboli Volcano (Italy) during the 2007 eruption
revealed by radar interferometry, numerical modelling and structural
geological field data, Casagli et al., 2009
Temps réel
• Real-time volcano activity mapping using ground-based digital imagery,
Honda and Nagai, JPRS, 2002
Avancer grâce à des sites test
• Sites permanents
–
–
–
–
–
Etna
Réunion
Montserrat
Mount St Helens
…
• Région avec sites sporadiques
– Japon
– Chili
– …
• Requis
– Nombreuses images (mêmes conditions de prise de vue)
– Données du terrain
Six volcans super-sites pour ORFEO
Six volcans super-sites pour ORFEO
• Etna
– Collaboration ORFEO, Logique EPOS / TeMex
• Piton de la Fournaise
– Collaboration ORFEO, BD-Isle
• Montserrat
– Responsabilité IPGP
• Sakurajima
– Relations avec le Japon dans le domaine spatial
• Mount St Helens
– Relations avec USA
• Merapi
– Relations avec Asie du Sud-Est, historique, projet de SO INSU