Observations of core-mantle boundary stoneley modes
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 eight CMB Stoneley modes using modal spectra from 93 events with Mw> 7.4 between 1...
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| Format: | Journal article |
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Wiley
2013
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| _version_ | 1797051530117906432 |
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| author | Koelemeijer, P Deuss, A Ritsema, J |
| author_facet | Koelemeijer, P Deuss, A Ritsema, J |
| author_sort | Koelemeijer, P |
| collection | OXFORD |
| description | 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 eight CMB Stoneley modes using modal spectra from 93 events with Mw> 7.4 between 1976 and 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. |
| first_indexed | 2024-03-06T18:20:47Z |
| format | Journal article |
| id | oxford-uuid:0637c12b-0a80-4e2c-b235-e515f5189ccb |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:20:47Z |
| publishDate | 2013 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:0637c12b-0a80-4e2c-b235-e515f5189ccb2022-03-26T09:01:24ZObservations of core-mantle boundary stoneley modesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0637c12b-0a80-4e2c-b235-e515f5189ccbSymplectic Elements at OxfordWiley2013Koelemeijer, PDeuss, ARitsema, JCore-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 eight CMB Stoneley modes using modal spectra from 93 events with Mw> 7.4 between 1976 and 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. |
| spellingShingle | Koelemeijer, P Deuss, A Ritsema, J Observations of core-mantle boundary stoneley modes |
| title | Observations of core-mantle boundary stoneley modes |
| title_full | Observations of core-mantle boundary stoneley modes |
| title_fullStr | Observations of core-mantle boundary stoneley modes |
| title_full_unstemmed | Observations of core-mantle boundary stoneley modes |
| title_short | Observations of core-mantle boundary stoneley modes |
| title_sort | observations of core mantle boundary stoneley modes |
| work_keys_str_mv | AT koelemeijerp observationsofcoremantleboundarystoneleymodes AT deussa observationsofcoremantleboundarystoneleymodes AT ritsemaj observationsofcoremantleboundarystoneleymodes |