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

Non-adiabaticity in mantle convection

Bunge, H.-P., Y. Ricard, and J. Matas (2001), Non-adiabaticity in mantle convection, Geophys. Res. Lett., 28(5), 879-882.

Abstract
Seismic observations indicate that Earth's lower mantle is homogeneous as revealed by smooth depth variations of the bulk sound velocity and Bullen's inhomogeneity parameter eta being close to one. Here we show with 3D spherical convection simulations that it should also be non-adiabatic because a significant proportion of mantle heat sources is internal. The computer simulations predict non-adiabaticity of 100-300 degrees for the lower mantle geotherm, with eta similar to 1.01 implying that the temperature drop across the Core Mantle Boundary exceeds 1000 degrees.
Further information
BibTeX
@article{id79,
  author = {H.-P. Bunge and Y. Ricard and J. Matas},
  journal = {Geophys. Res. Lett.},
  number = {5},
  pages = {879-882},
  title = {{Non-adiabaticity in mantle convection}},
  volume = {28},
  year = {2001},
  language = {en},
  url = {http://www.geophysik.uni-muenchen.de/Members/bunge/download/nonadiabat.pdf},
}
EndNote
%0 Journal Article
%A Bunge, H.-P.
%A Ricard, Y.
%A Matas, J.
%D 2001
%N 5
%V 28
%J Geophys. Res. Lett.
%P 879-882
%T Non-adiabaticity in mantle convection
%U http://www.geophysik.uni-muenchen.de/Members/bunge/download/nonadiabat.pdf
%U http://www.geophysik.uni-muenchen.de/Members/bunge/download/nonadiabat.ps.gz
ImprintPrivacy PolicyContact
Printed 15. Dec 2019 22:12