Moment tensor inversion of waveforms: a two-step time-frequency approach

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F12%3A00379336" target="_blank" >RIV/67985530:_____/12:00379336 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1111/j.1365-246X.2012.05592.x" target="_blank" >http://dx.doi.org/10.1111/j.1365-246X.2012.05592.x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/j.1365-246X.2012.05592.x" target="_blank" >10.1111/j.1365-246X.2012.05592.x</a>

Result language
angličtina
Original language name
Moment tensor inversion of waveforms: a two-step time-frequency approach
Original language description
We present a moment tensor inversion of waveforms, which is more robust and yields more stable and more accurate results than standard approaches. The inversion is performed in two steps and combines inversions in time and frequency domains. First, the inversion for the source-time function is performed in the frequency domain using complex spectra. Second, the time-domain inversion for the moment tensor is performed using the source-time function calculated in the first step. In this way, we can consider a realistic, complex source-time function and still keep the final moment tensor inversion linear. Using numerical modelling, we compare the efficiency and accuracy of the proposed approach with standard waveform inversions. We study the sensitivity of the retrieved double-couple and non-double-couple components of the moment tensors to noise in the data, to inaccuracies of the location and of the velocity model, and to the type of the focal mechanism.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DC - Seismology, volcanology and Earth structure
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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