CaltechAUTHORS
  A Caltech Library Service

Petrological constraints on seismic anisotropy

Montagner, Jean-Paul and Anderson, Don L. (1989) Petrological constraints on seismic anisotropy. Physics of the Earth and Planetary Interiors, 54 (1-2). pp. 82-105. ISSN 0031-9201. https://resolver.caltech.edu/CaltechAUTHORS:20140507-141645937

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140507-141645937

Abstract

The purpose of this paper is to investigate the correlations between anisotropic parameters for different orientations and mineralogies for realistic mineralogical and petrological models of the upper mantle. Such correlations make it possible to reduce the number of independent parameters required in seismic modelling of the upper mantle. The variation with depth and with degree of random orientation is also investigated. It is shown that the anisotropic combinations involved in an equivalent transversely isotropic medium (azumithally averaged velocities) with a vertical symmetry axis are strongly correlated but the combinations involved in azimuthal anisotropy are more weakly correlated. Comparison with available seismic data does not yet allow discrimination, based on anisotropy, between different petrological models. It is shown that, even if a proportion of random orientation is introduced, it should be possible to achieve petrological discrimination from seismic data for some orientation configurations, if the inverse problem is well-posed, i.e., takes account of the correlations between anisotropic parameters. These correlations are incorporated in an inversion process to show that it is possible to explain the dataset used to derive the PREM, by alternative anisotropic models for the uppermost 220 km.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0031-9201(89)90189-1DOIArticle
http://www.sciencedirect.com/science/article/pii/0031920189901891PublisherArticle
ORCID:
AuthorORCID
Montagner, Jean-Paul0000-0001-9958-3012
Additional Information:© 1989 Elsevier Science Publishers B.V. Received June 1, 1987; revision accepted March 1, 1988. We would like to thank Tom Duffy, Hiroo Kanamori, Hitoshi Kawakatsu and Toshiro Tanimoto for helpful discussions or for reading the manuscript. This research was supported by the National Science Foundation, grants EAR-8509350 and EAR-8317623. Contribution No. 4482, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125.
Funders:
Funding AgencyGrant Number
NSFEAR-8509350
NSFEAR-8317623
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences4482
Issue or Number:1-2
Record Number:CaltechAUTHORS:20140507-141645937
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140507-141645937
Official Citation:Montagner, J.-P., & Anderson, D. L. (1989). Petrological constraints on seismic anisotropy. Physics of the Earth and Planetary Interiors, 54(1–2), 82-105. doi: http://dx.doi.org/10.1016/0031-9201(89)90189-1
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45582
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:07 May 2014 22:48
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page