Determination of elastic anisotropy of rocks from P- and S-wave velocities: numerical modelling and lab measurements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10291876" target="_blank" >RIV/00216208:11310/14:10291876 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985530:_____/14:00433696 RIV/67985831:_____/14:00433696

Výsledek na webu

<a href="http://dx.doi.org/10.1093/gji/ggu332" target="_blank" >http://dx.doi.org/10.1093/gji/ggu332</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/gji/ggu332" target="_blank" >10.1093/gji/ggu332</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of elastic anisotropy of rocks from P- and S-wave velocities: numerical modelling and lab measurements

Popis výsledku v původním jazyce

The most common type of waves used for probing anisotropy of rocks in laboratory is the direct P wave. Information potential of the measured P-wave velocity, however, is limited. In rocks displaying weak triclinic anisotropy, the P-wave velocity dependsjust on 15 linear combinations of 21 elastic parameters, called the weak-anisotropy parameters. In strong triclinic anisotropy, the P-wave velocity depends on the whole set of 21 elastic parameters, but inversion for six of them is ill-conditioned and these parameters are retrieved with a low accuracy. Therefore, in order to retrieve the complete elastic tensor accurately, velocities of S waves must also be measured and inverted. For this purpose, we developed a lab facility which allows the P-and S-wave ultrasonic sounding of spherical rock samples in 132 directions distributed regularly over the sphere. The velocities are measured using a pair of P-wave sensors with the transmitter and receiver polarized along the radial direction and

Název v anglickém jazyce

Determination of elastic anisotropy of rocks from P- and S-wave velocities: numerical modelling and lab measurements

Popis výsledku anglicky

The most common type of waves used for probing anisotropy of rocks in laboratory is the direct P wave. Information potential of the measured P-wave velocity, however, is limited. In rocks displaying weak triclinic anisotropy, the P-wave velocity dependsjust on 15 linear combinations of 21 elastic parameters, called the weak-anisotropy parameters. In strong triclinic anisotropy, the P-wave velocity depends on the whole set of 21 elastic parameters, but inversion for six of them is ill-conditioned and these parameters are retrieved with a low accuracy. Therefore, in order to retrieve the complete elastic tensor accurately, velocities of S waves must also be measured and inverted. For this purpose, we developed a lab facility which allows the P-and S-wave ultrasonic sounding of spherical rock samples in 132 directions distributed regularly over the sphere. The velocities are measured using a pair of P-wave sensors with the transmitter and receiver polarized along the radial direction and

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DC - Seismologie, vulkanologie a struktura Země

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geophysical Journal International

ISSN

0956-540X

e-ISSN

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Svazek periodika

199

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

1682-1697

Kód UT WoS článku

000345509800027

EID výsledku v databázi Scopus

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