Transcript Introduction and Seed Questions

Session 4: GOCE for
Solid Earth
Chairs:
M. van der Meijde
J. Ebbing
Key questions from GOCE Solid Earth workshop 2012
• Is there a real benefit from using GOCE?
• Global models vs gradients
– Why use gradients at all?
– Could gradients be obtained/provided directly from global models (at grid
size& altitude of choice)?
– Recommended to use observed gradients at altitude where they are
measured?
• Gravity with other data
– Complementarity with seismic tomography to be exploited further?
– seismology could add vertical information, gravity the spatial continuity
– but what is needed to make this happen, do we have all the information???
Key questions from GOCE Solid Earth workshop 2012
• Is there a real benefit from using GOCE? Yes.
• Global models vs gradients
– Why use gradients at all?
Spatial and discontinuous information!
– Could gradients be obtained/provided directly from global models (at grid
size& altitude of choice)?
Local modelling with global grids?
– Recommended to use observed gradients at altitude where they are
measured?
Depends on your target of interest.
• Gravity with other data ???
– Complementarity with seismic tomography to be exploited further?
– seismology could add vertical information, gravity the spatial continuity
– but what is needed to make this happen, do we have all the information???
Seed questions 2014
•
How is the sub-lithospheric gravity field
related to dynamic topography/plate
tectonics
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Are all tools for for petrologicalgeophysical modelling to distinguish
composition and temperature in the
lithosphere available?
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Bias by inaccurate crustal models?
Bias by differences in seismological models?
Link of seismological models to crustal
architecture
Joint inversion of multiple data sets
What is the link to the magnetic
lithosphere and electrical conductivity of
the mantle?
Scientific roadmap
Future application of GOCE data?
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Integration with airborne gravity surveys
Improvements for geological exploration
From crustal thickness to heat-flow
Strength of the lithosphere
From crust to mantle
From crust to core
How to convince the larger earth science community to use GOCE
products?
Invitation for session at next TopoEurope workshop
Antibes, October 2015