25.01.2015 Views

IASPEI - Picture Gallery

IASPEI - Picture Gallery

IASPEI - Picture Gallery

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy<br />

(S) - <strong>IASPEI</strong> - International Association of Seismology and Physics of the Earth's<br />

Interior<br />

JSS013 Oral Presentation 2216<br />

Variations in mechanical anisotropy of the continental lithosphere<br />

Dr. Jon Kirby<br />

Spatial Sciences Curtin University of Technology IAG<br />

Chris Swain, Steve Reddy<br />

Spatial and azimuthal variations in the flexural rigidity of the lithosphere can be revealed through a<br />

wavelet analysis of gravity and topography data. The same method that we use to estimate elastic<br />

thickness variations is readily adaptable to such anisotropic studies. This mechanical anisotropy is<br />

thought to arise from gross alignment of olivine crystals in the upper mantle. Here we present results of<br />

such an analysis over continental lithosphere, and provide correlations with data from seismic<br />

anisotropy studies, whose variations are thought to arise from similar sources. These results show a<br />

good degree of correlation between mechanical and seismic anisotropies.<br />

Keywords: anisotropy, wavelets

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!