Uncertainty of moment tensor determination from surface wave analysis for shallow earthquakes
We treat the problem of the non-uniqueness of the moment tensor inversion for shallow earthquakes from long period surface wave data. We give an existence condition for double couples radiating the same long period surface waves as the deviatoric moment tensor obtained by such inversion. We describe...
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| Veröffentlicht in: | Journal of Seismology 2010-07, Vol.14 (3), p.601-614 |
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| container_end_page | 614 |
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| container_title | Journal of Seismology |
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| creator | Bukchin, B. Clévédé, E. Mostinskiy, Alexander |
| description | We treat the problem of the non-uniqueness of the moment tensor inversion for shallow earthquakes from long period surface wave data. We give an existence condition for double couples radiating the same long period surface waves as the deviatoric moment tensor obtained by such inversion. We describe the family of such double couples and show that they may provide better estimates of double couple mechanisms than the traditional “best double-couple” solution. We demonstrate the results of application to four large shallow earthquakes with different source signatures. |
| doi_str_mv | 10.1007/s10950-009-9185-8 |
| format | Article |
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| subjects | Earth and Environmental Science Earth Sciences Earthquakes Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Hydrogeology Original Article Sciences of the Universe Seismic activity Seismology Structural Geology Surface tension Surface waves Wave analysis Waveform analysis |
| title | Uncertainty of moment tensor determination from surface wave analysis for shallow earthquakes |
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