| The optimum source－time function for generating finite－difference synthetic seismograms |
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| 作者姓名： | Abdolrahim JAVAHERIAN |
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| 作者单位： | Institute of Geophysics，the University Of Tehran，P.O.Box 14155-6466 Tehran，Islamic Republic of Iran |
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| 摘 要： | Ｔｈｅｏｐｔｉｍｕｍｓｏｕｒｃｅ－ｔｉｍｅｆｕｎｃｔｉｏｎｆｏｒｇｅｎｅｒａｔｉｎｇｆｉｎｉｔｅ－ｄｉｆｆｅｒｅｎｃｅｓｙｎｔｈｅｔｉｃｓｅｉｓｍｏｇｒａｍｓＡｂｄｏｌｒａｈｉｍＪＡＶＡＨＥＲＩＡＮ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓｉｃｓ，ｔｈｅ...
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| 收稿时间： | 11 February 1993 |
| 修稿时间： | 7 May 1993 |
The optimum source-time function for generating finite-difference synthetic seismograms |
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| Abdolrahim JAVAHERIAN.The optimum source-time function for generating finite-difference synthetic seismograms[J].Acta Seismologica Sinica(English Edition),1994,7(1):23-31. |
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| Authors: | Abdolrahim JAVAHERIAN |
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| Institution: | (1) Institute of Geophysics, the University of Tehran, P. O. Box 14155-6466, Tehran, Islamic Republic of Iran |
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| Abstract: | A source-time function plays an important role in generating finite-difference synthetic seismograms.In this regard,we consider the amplitude spectra of five different time functions.This investigation shows that when the high-frequency signals of the time function carry more power than the main signal,the tailing phenomena would be associated with the main signal which is not desirable in producing finite-difference synthetic seismograms.It is illustrated that the time function denoted by is the optimal source-time function among those examined in this paper for generating finite-difference synthetic seismograms.This matter is also verified by making finite-difference synthetic seismograms over an elastic earth model consisting of a layer over a half space. |
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| Keywords: | source-time function finite-difference synthetic seismograms |
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