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Statements

Subject Item
n2:RIV%2F67985530%3A_____%2F13%3A00397121%21RIV14-AV0-67985530
rdf:type
skos:Concept n16:Vysledek
dcterms:description
Acoustic axes are directions in anisotropic elastic media, in which phase velocities of two or three plane waves (P, S1 or S2 waves) coincide. Acoustic axes are important, because they can cause singularities in the field of polarization vectors and anomalies in the shape of the slowness surface. The maximum number of acoustic axes in triclinic anisotropy is 16, and their directions depend on anisotropy parameters in a complicate way. Under weak anisotropy approximation this dependence simplifies and the directions of acoustic axes can be used for the inversion for anisotropy parameters. The maximum acoustic axes under weak anisotropy is 16, the minimum number of acoustic axes is zero. In the inversion, we can retrieve 13 combinations of anisotropy parameters provided we use directions of 7 acoustic axes at least. Under weak anisotropy approximation, the directions of acoustic axes are insensitive to strength of anisotropy; hence we cannot invert for absolute values of weak anisotropy parameters, but only for their relative values. Acoustic axes are directions in anisotropic elastic media, in which phase velocities of two or three plane waves (P, S1 or S2 waves) coincide. Acoustic axes are important, because they can cause singularities in the field of polarization vectors and anomalies in the shape of the slowness surface. The maximum number of acoustic axes in triclinic anisotropy is 16, and their directions depend on anisotropy parameters in a complicate way. Under weak anisotropy approximation this dependence simplifies and the directions of acoustic axes can be used for the inversion for anisotropy parameters. The maximum acoustic axes under weak anisotropy is 16, the minimum number of acoustic axes is zero. In the inversion, we can retrieve 13 combinations of anisotropy parameters provided we use directions of 7 acoustic axes at least. Under weak anisotropy approximation, the directions of acoustic axes are insensitive to strength of anisotropy; hence we cannot invert for absolute values of weak anisotropy parameters, but only for their relative values.
dcterms:title
Inversion for weak triclinic anisotropy from acoustic axes Inversion for weak triclinic anisotropy from acoustic axes
skos:prefLabel
Inversion for weak triclinic anisotropy from acoustic axes Inversion for weak triclinic anisotropy from acoustic axes
skos:notation
RIV/67985530:_____/13:00397121!RIV14-AV0-67985530
n16:predkladatel
n18:ico%3A67985530
n4:aktivita
n11:I n11:P
n4:aktivity
I, P(IAA300120801)
n4:cisloPeriodika
8
n4:dodaniDat
n5:2014
n4:domaciTvurceVysledku
n14:4755405
n4:druhVysledku
n15:J
n4:duvernostUdaju
n9:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
81057
n4:idVysledku
RIV/67985530:_____/13:00397121
n4:jazykVysledku
n17:eng
n4:klicovaSlova
acoustic axis; weak anisotropy; elastic waves; wave polarization
n4:klicoveSlovo
n7:wave%20polarization n7:weak%20anisotropy n7:acoustic%20axis n7:elastic%20waves
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[DADF310C8721]
n4:nazevZdroje
Wave Motion
n4:obor
n10:DC
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:projekt
n19:IAA300120801
n4:rokUplatneniVysledku
n5:2013
n4:svazekPeriodika
50
n4:tvurceVysledku
Vavryčuk, Václav
n4:wos
000326556200009
s:issn
0165-2125
s:numberOfPages
12
n8:doi
10.1016/j.wavemoti.2012.11.003