View
217
Download
0
Category
Preview:
Citation preview
Cartografia Geologica di Corpi Planetari
Pozzobon R. (1), Massironi M. (2), Giacomini L (2)., Ferrari S. (2), Cremonese G. (1)
1 . I N A F – O s s e r v a t o r i o A s t r o n o m i c o d i P a d o v a
2 . D i p a r t i m e n t o d i G e o s c i e n z e , U n i v e r s i t à d e g l i S t u d i d i P a d o v a
Mars Reconnaissance Orbiter CTX images
Raw image from PDS
Radiometrically calibrated and destriped image
Projected
DAEDALIA PLANUM (MARS)
Arsia Mons
Pavonis Mons
Ascraeus Mons
Olympus Mons
Lava flows: over 1500 km of length Slope gradient: always <0.5° (commonly <0.1°)
ASCRAEUS MONS WORKFLOW
• Structural interpretation of the last deformation features on Ascraeus Mons • FEM modelling • Origin of the structures on Ascraeus Mons
STRUCTURAL INTERPRETATION
Concentric Grabens
Concentric Pits (craters and chains)
Concentric Faults
Radial Grabens
Radial Pits (craters and chains)
Transitional Structures
Structural Interpretation on immages acquired
by Mars Express mission Istrument:
mosaic
STEP 1: extraction of the topographic profile from MOLA data normalization and averaging of the profiles to a mean radius
EXAMPLE OF CYLINDRICAL AXIAL SYMMETRY
RESULTS Only a magma chamber with an oblate shape at a depth of 70-90 km can generate a tensional stress field compatible with the observed structures
DE
PT
H (
km)
RADIAL ZONE
CONCENTRIC ZONE TRANSITIONAL ZONE
PROs: Effectiveness in importing PDS files Availability of many solar system body ellipsoids and projections Strong potential of mosaicking Graphic tools for geological mapping Cratertools for age determinantion Easy DTM treatment and integration of independent data CONs: Lack of DTM generation tools from stereo couples Lack of tools for advanced multi/hyper spectral analysis (Pca, supervised and unsupervised Classifications, spectral signature treatment)
CONCLUSIONS: ARCGIS IN PLANETARY SCIENCES
Recommended