University of Cambridge > Talks.cam > Bullard Laboratories Wednesday Colloquia > Surface wave tomography: insights into the structure of the upper mantle beneath Australia

Surface wave tomography: insights into the structure of the upper mantle beneath Australia

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact tilmann.

The latest surace wave tomographic models of Australia are presented. These models incorporate new data, particularly useful in the western half of the continent, containing the majority of the oldest Archaean cratons. A variety of improved techniques have been developed to improve the reliabilty of the tomographic images. Multiple starting models are used within the waveform inversion procedure, giving improved path coverage, and a better estimate on the uncertainty of the 1D path averaged model. A multi-scale tomographic method is illustrated, thus damping the final images towards large scale features in the data, rather than the initial, homogenous, a priori reference model. The qualititative relationship between the tomographic images and known geology and tectonics is discussed, with focus on the shallow structure of the eastern margin of Australia, and also the variations in structure of the shield region.

This talk is part of the Bullard Laboratories Wednesday Colloquia series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2022 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity