Koelemeijer, Paula and Deuss, Arwen and Ritsema, Jeroen (2013) Observations of core-mantle boundary Stoneley modes. Geophysical Research Letters, 40 (11). pp. 2557-2561. ISSN eissn:1944-8007 DOI https://doi.org/10.1002/grl.50514
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Abstract
Core-mantle boundary (CMB) Stoneley modes represent a unique class of normal modes with extremely strong sensitivity to wave speed and density variations in the D″ region. We measure splitting functions of 8 CMB Stoneley modes using modal spectra from 93 events with Mw > 7.4 between 1976–2011. The obtained splitting function maps correlate well with the predicted splitting calculated for S20RTS+Crust5.1 structure and the distribution of Sdiff and Pdiff travel time anomalies, suggesting that they are robust. We illustrate how our new CMB Stoneley mode splitting functions can be used to estimate density variations in the Earth's lowermost mantle.
Item Type: | Article |
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Additional Information: | ©2013 American Geophysical Union. All Rights Reserved |
Uncontrolled Keywords: | 2013AREP; IA65; |
Subjects: | 02 - Geodynamics, Geophysics and Tectonics |
Divisions: | 02 - Geodynamics, Geophysics and Tectonics |
Journal or Publication Title: | Geophysical Research Letters |
Volume: | 40 |
Page Range: | pp. 2557-2561 |
Identification Number: | https://doi.org/10.1002/grl.50514 |
Depositing User: | Sarah Humbert |
Date Deposited: | 03 May 2013 16:29 |
Last Modified: | 11 Jul 2014 11:42 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/2767 |
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