qSF wavefront triplication in a transversely isotropicmaterial

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Triplication of a wavefront, also classically known as birefringence, can and does occur in transversely isotropic (TI) media. With the growing interest in shear waves, and in particular, converted shear waves, it becomes necessary to study this phenomenon, and the bright spots that accompany it. In a plane that includes the medium's rotational symmetry axis, there may exist a range of angles within which the qSV wave, whose polarization lies in that plane, may propagate at three distinct velocities. The region of the qSV wave curve where this can occur always corresponds to the region of the qSV slowness curve ... continued below

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Schoenberg, Michael & Daley, Thomas M. June 1, 2004.

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Triplication of a wavefront, also classically known as birefringence, can and does occur in transversely isotropic (TI) media. With the growing interest in shear waves, and in particular, converted shear waves, it becomes necessary to study this phenomenon, and the bright spots that accompany it. In a plane that includes the medium's rotational symmetry axis, there may exist a range of angles within which the qSV wave, whose polarization lies in that plane, may propagate at three distinct velocities. The region of the qSV wave curve where this can occur always corresponds to the region of the qSV slowness curve where the closed qSV curve about the origin is concave. When the range of angles is small and the three arrivals are close together, the usual situation, the qSV wave within that small range will be significantly brighter than in other directions. When the range of angles is large, the two cusps of the wave surface, on the borders of the region of triplication will both be bright spots.

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  • Journal Name: Journal of the Acoustical Society of America; Journal Volume: 115; Journal Issue: 5; Related Information: Journal Publication Date: 2001

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  • Report No.: LBNL--63584
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 928886
  • Archival Resource Key: ark:/67531/metadc896488

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1, 2004

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 7, 2016, 7:13 p.m.

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Schoenberg, Michael & Daley, Thomas M. qSF wavefront triplication in a transversely isotropicmaterial, article, June 1, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc896488/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.