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Using waveform inversion to determin...

Yan, Jia.

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Using waveform inversion to determine local earthquake source parameters in northeastern United States.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Using waveform inversion to determine local earthquake source parameters in northeastern United States./
Author:	Yan, Jia.
Description:	77 p.
Notes:	Adviser: John E. Ebel.
Contained By:	Masters Abstracts International44-04.
Subject:	Geophysics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1432532
ISBN:	9780542557590

Using waveform inversion to determine local earthquake source parameters in northeastern United States.
Yan, Jia.

Using waveform inversion to determine local earthquake source parameters in northeastern United States. - 77 p.

Adviser: John E. Ebel.

Thesis (M.S.)--Boston College, 2006.

An algorithm for full waveform inversion involving two programs by different researchers is implemented to compute Green's functions and to use these Green's functions to invert observed seismograms for the seismic moment tensor of local earthquakes. The inversion method for local earthquakes is first tested on California earthquakes, and good fits between synthetic and observed seismograms suggest that the moment tensors are well resolved. The same method is applied to local earthquakes in Northeastern North America (magnitudes from 3 to 5). For earthquakes of magnitude 4.0 and greater in Northeastern North America, reliable results can probably be obtained for most earthquakes, with the fault planes being close to those from the first motion focal mechanism. For smaller earthquakes (M<4.0), the inversion results become less reliable with decreasing magnitude.

ISBN: 9780542557590Subjects--Topical Terms:

535228
Geophysics.

Using waveform inversion to determine local earthquake source parameters in northeastern United States.
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005 20110915
008 110915s2006 eng d
020 $a 9780542557590
035 $a (UnM)AAI1432532
035 $a AAI1432532
040 $a UnM $c UnM
100 1 $a Yan, Jia. $3 1259849
245 1 0 $a Using waveform inversion to determine local earthquake source parameters in northeastern United States.
300 $a 77 p.
500 $a Adviser: John E. Ebel.
500 $a Source: Masters Abstracts International, Volume: 44-04, page: 1794.
502 $a Thesis (M.S.)--Boston College, 2006.
520 $a An algorithm for full waveform inversion involving two programs by different researchers is implemented to compute Green's functions and to use these Green's functions to invert observed seismograms for the seismic moment tensor of local earthquakes. The inversion method for local earthquakes is first tested on California earthquakes, and good fits between synthetic and observed seismograms suggest that the moment tensors are well resolved. The same method is applied to local earthquakes in Northeastern North America (magnitudes from 3 to 5). For earthquakes of magnitude 4.0 and greater in Northeastern North America, reliable results can probably be obtained for most earthquakes, with the fault planes being close to those from the first motion focal mechanism. For smaller earthquakes (M<4.0), the inversion results become less reliable with decreasing magnitude.
590 $a School code: 0016.
650 4 $a Geophysics. $3 535228
690 $a 0373
710 2 0 $a Boston College. $3 1017525
773 0 $t Masters Abstracts International $g 44-04.
790 $a 0016
790 1 0 $a Ebel, John E., $e advisor
791 $a M.S.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1432532