Continuous in time evaluation of wave absorption in the scale of a seismic trace
This paper is devoted to describing a new method for estimation of the medium quality factor Q on the scale of seismic trace. A time-continuous estimate of Q is obtained as a result of preliminarily calculating the first two normalized moments of the power spectrum within a time interval sliding alo...
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| Дата: | 2011 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | rus |
| Опубліковано: |
Subbotin Institute of Geophysics of the NAS of Ukraine
2011
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| Онлайн доступ: | https://journals.uran.ua/geofizicheskiy/article/view/116924 |
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| Назва журналу: | Geofizicheskiy Zhurnal |
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journalsuranua-geofizicheskiy-article-1169242020-10-07T11:01:56Z Continuous in time evaluation of wave absorption in the scale of a seismic trace Tyapkin, Yu. K. Shadura, A. N. Roganov, V. Yu. This paper is devoted to describing a new method for estimation of the medium quality factor Q on the scale of seismic trace. A time-continuous estimate of Q is obtained as a result of preliminarily calculating the first two normalized moments of the power spectrum within a time interval sliding along the seismic record. The calculation of both integral spectral characteristics is fulfilled in the time domain with the use of special convolution-type operators. In order to eliminate the corruptive impact of the interfering character of real seismic records, a two-stage scheme is proposed. Modeling of synthetic seismograms without regard for absorption in the medium is fulfilled at the first stage. These simulation data join well the entire scheme of time-continuous determination of Q. The second stage is polynomial approximation of the intermediate estimates of the spectrum moments subject to a priori restrictions on the accep-table values of Q. The method was tested successfully on synthetic and real data. Subbotin Institute of Geophysics of the NAS of Ukraine 2011-06-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116924 10.24028/gzh.0203-3100.v33i3.2011.116924 Geofizicheskiy Zhurnal; Vol. 33 No. 3 (2011); 40-53 Геофизический журнал; Том 33 № 3 (2011); 40-53 Геофізичний журнал; Том 33 № 3 (2011); 40-53 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/116924/110987 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| institution |
Geofizicheskiy Zhurnal |
| collection |
OJS |
| language |
rus |
| format |
Article |
| author |
Tyapkin, Yu. K. Shadura, A. N. Roganov, V. Yu. |
| spellingShingle |
Tyapkin, Yu. K. Shadura, A. N. Roganov, V. Yu. Continuous in time evaluation of wave absorption in the scale of a seismic trace |
| author_facet |
Tyapkin, Yu. K. Shadura, A. N. Roganov, V. Yu. |
| author_sort |
Tyapkin, Yu. K. |
| title |
Continuous in time evaluation of wave absorption in the scale of a seismic trace |
| title_short |
Continuous in time evaluation of wave absorption in the scale of a seismic trace |
| title_full |
Continuous in time evaluation of wave absorption in the scale of a seismic trace |
| title_fullStr |
Continuous in time evaluation of wave absorption in the scale of a seismic trace |
| title_full_unstemmed |
Continuous in time evaluation of wave absorption in the scale of a seismic trace |
| title_sort |
continuous in time evaluation of wave absorption in the scale of a seismic trace |
| description |
This paper is devoted to describing a new method for estimation of the medium quality factor Q on the scale of seismic trace. A time-continuous estimate of Q is obtained as a result of preliminarily calculating the first two normalized moments of the power spectrum within a time interval sliding along the seismic record. The calculation of both integral spectral characteristics is fulfilled in the time domain with the use of special convolution-type operators. In order to eliminate the corruptive impact of the interfering character of real seismic records, a two-stage scheme is proposed. Modeling of synthetic seismograms without regard for absorption in the medium is fulfilled at the first stage. These simulation data join well the entire scheme of time-continuous determination of Q. The second stage is polynomial approximation of the intermediate estimates of the spectrum moments subject to a priori restrictions on the accep-table values of Q. The method was tested successfully on synthetic and real data. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2011 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/116924 |
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2024-04-21T19:41:33Z |
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2024-04-21T19:41:33Z |
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