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Zhou, Rongmao.

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Intermediate period surface waves from mining explosions for crustal structure and source studies: Application in the western United States and northeast China (Wyoming, QianAn).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Intermediate period surface waves from mining explosions for crustal structure and source studies: Application in the western United States and northeast China (Wyoming, QianAn)./
Author:	Zhou, Rongmao.
Description:	260 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1213.
Contained By:	Dissertation Abstracts International65-03B.
Subject:	Geophysics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125994

Intermediate period surface waves from mining explosions for crustal structure and source studies: Application in the western United States and northeast China (Wyoming, QianAn).
Zhou, Rongmao.

Intermediate period surface waves from mining explosions for crustal structure and source studies: Application in the western United States and northeast China (Wyoming, QianAn). - 260 p.

Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1213.

Thesis (Ph.D.)--Southern Methodist University, 2004.

The study of intermediate period surface waves from mining explosions in Western USA (Wyoming) and Northeast China (QianAn) provides constraints on the crustal structure in these regions and the source mechanism of the explosions. Large-scale mining explosions as a result of their long time duration and large spatial extent can generate short- to intermediate-period (1–20 s) surface waves. Regional surface waves observed in the Western US were generated by four large-scale cast blasts in a Wyoming coal mine. Intermediate-period surface waves in Northeast China were generated by a mining explosion in an iron mine. Fundamental mode Rayleigh wave group velocities were estimated using multiple filter analysis and refined by phase matched filtering. Station specific velocity models were determined by linear inversion of the dispersion curves and found to complement known shallow crustal structure in each area.Subjects--Topical Terms:

535228
Geophysics.

Intermediate period surface waves from mining explosions for crustal structure and source studies: Application in the western United States and northeast China (Wyoming, QianAn).
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035 $a (UnM)AAI3125994
035 $a AAI3125994
040 $a UnM $c UnM
100 1 $a Zhou, Rongmao. $3 1946599
245 1 0 $a Intermediate period surface waves from mining explosions for crustal structure and source studies: Application in the western United States and northeast China (Wyoming, QianAn).
300 $a 260 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-03, Section: B, page: 1213.
500 $a Adviser: Brian W. Stump.
502 $a Thesis (Ph.D.)--Southern Methodist University, 2004.
520 $a The study of intermediate period surface waves from mining explosions in Western USA (Wyoming) and Northeast China (QianAn) provides constraints on the crustal structure in these regions and the source mechanism of the explosions. Large-scale mining explosions as a result of their long time duration and large spatial extent can generate short- to intermediate-period (1–20 s) surface waves. Regional surface waves observed in the Western US were generated by four large-scale cast blasts in a Wyoming coal mine. Intermediate-period surface waves in Northeast China were generated by a mining explosion in an iron mine. Fundamental mode Rayleigh wave group velocities were estimated using multiple filter analysis and refined by phase matched filtering. Station specific velocity models were determined by linear inversion of the dispersion curves and found to complement known shallow crustal structure in each area.
520 $a Synthetics based on mining source models and the inverted velocity structure suggest that some combination of mine free face orientation, blasting direction and material casting contribute to the observations. The Wyoming and China studies are presented at Paper I and Paper II, respectively.
520 $a Assessment of surface wave dispersion provides the opportunity to make intermediate period <italic>M</italic>s estimates with path correction. These surface wave magnitude estimates are combined with regional body wave magnitude estimates, mb, and compared to <italic>M</italic> s:mb data from explosions and earthquakes for purposes of identifying the source type. These results suggest that mining explosions are different from simultaneously detonated explosions and may appear earthquake like. This work is discussed in Paper III.
520 $a The surface wave inversions used in the first part of the study utilized common linearized inversion procedures. In order to assess the effect of the linearization, a niching genetic algorithm (NGA) was introduced, developed and tested for crustal shear-wave velocity inversion in Paper IV. This procedure maintains the ability to locate multiple solutions to the inversion problem. Application of this new technique to regional surface wave observations from the Powder River Basin illustrates the methodology and identifies multiple models that can then be checked for consistency with other geological and geophysical constraints.
590 $a School code: 0210.
650 4 $a Geophysics. $3 535228
650 4 $a Engineering, Mining. $3 1035560
690 $a 0373
690 $a 0551
710 2 0 $a Southern Methodist University. $3 1024930
773 0 $t Dissertation Abstracts International $g 65-03B.
790 1 0 $a Stump, Brian W., $e advisor
790 $a 0210
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3125994