Diese Seite ist aus Gründen der Barrierefreiheit optimiert für aktuelle Browser. Sollten Sie einen älteren Browser verwenden, kann es zu Einschränkungen der Darstellung und Benutzbarkeit der Website kommen!
Geophysics Homepage
Search:
Log in
print

Special Seminar by Professor D. Dobson (UCL) on Thursday July 18.

room 419, 18. Jul 2019, 12:15 – 13:15

Professor David Dobson from the University College of London will give a special seminar at the Geophysics section on July 18, entitled "Greater than the sum of the parts: grain boundaries under high pressure".

He will present an overview of observations which suggest that grain boundaries significantly reconstruct as a function of pressure such that their mechanical behaviour might be fundamentally different in the lower mantle and discuss recent measurements which show that this high-pressure reconstruction inhibits grain-boundary sliding even at sub-micron grain sizes.  This suggests that (1) extrinsic seismic attenuation might be important in the lower mantle and (2) a fine-grained (<100 micrometre) lower mantle would be consistent with all of the geophysical and experimental petrological constraints.

by Hans-Peter Bunge last modified 14. Jul 2019 16:28
ImprintPrivacy PolicyContact
Printed 15. Dec 2019 03:04