Velocity dispersion in fractured rocks in a wide frequency range

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10188800" target="_blank" >RIV/00216208:11310/13:10188800 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/13:00392585

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jappgeo.2013.01.010" target="_blank" >http://dx.doi.org/10.1016/j.jappgeo.2013.01.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jappgeo.2013.01.010" target="_blank" >10.1016/j.jappgeo.2013.01.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Velocity dispersion in fractured rocks in a wide frequency range

Popis výsledku v původním jazyce

Experimental measurements of fracture-induced seismic waves velocity variations at frequencies similar to 1 kHz, similar to 40 kHz and similar to 1 MHz were performed directly in the field at the rocky outcrop and in the laboratory on specific rock samples collected from the outcrops. The peridotite-lherzolite outcrop appeared macroscopically uniform and contained three systems of visible parallel sub-vertical fractures. This rock has substantial bulk density and higher than average value of seismic wave velocity. The presence of fracture systems gives rise to its velocity anisotropy. The seismic waves passing through the rock fractures are subject to velocity dispersion and frequency dependent attenuation. Our data, obtained from field and laboratorymeasurements, were compared with theoretical model predictions. In this model we successfully used displacement discontinuity approach. For the velocity dispersion evaluation we used multi-frequency measurements. The a priori observation

Název v anglickém jazyce

Velocity dispersion in fractured rocks in a wide frequency range

Popis výsledku anglicky

Experimental measurements of fracture-induced seismic waves velocity variations at frequencies similar to 1 kHz, similar to 40 kHz and similar to 1 MHz were performed directly in the field at the rocky outcrop and in the laboratory on specific rock samples collected from the outcrops. The peridotite-lherzolite outcrop appeared macroscopically uniform and contained three systems of visible parallel sub-vertical fractures. This rock has substantial bulk density and higher than average value of seismic wave velocity. The presence of fracture systems gives rise to its velocity anisotropy. The seismic waves passing through the rock fractures are subject to velocity dispersion and frequency dependent attenuation. Our data, obtained from field and laboratorymeasurements, were compared with theoretical model predictions. In this model we successfully used displacement discontinuity approach. For the velocity dispersion evaluation we used multi-frequency measurements. The a priori observation

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

<a href="/cs/project/IAA300130906" target="_blank" >IAA300130906: Vztah mezi elastickými moduly hornin, stanovenými seismickými metodami v laboratoři a v terénu</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Geophysics

ISSN

0926-9851

e-ISSN

—

Svazek periodika

90

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

138-146

Kód UT WoS článku

000316167700014

EID výsledku v databázi Scopus

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