P-wave reflection-moveout approximation for horizontally layered media of tilted weak-to-moderate orthorhombic symmetry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F20%3A00524541" target="_blank" >RIV/67985530:_____/20:00524541 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/20:10421795

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0926985120300343" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926985120300343</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jappgeo.2020.104057" target="_blank" >10.1016/j.jappgeo.2020.104057</a>

Jazyk výsledku

angličtina

Název v původním jazyce

P-wave reflection-moveout approximation for horizontally layered media of tilted weak-to-moderate orthorhombic symmetry

Popis výsledku v původním jazyce

An approximate nonhyperbolic P-wave moveout formula applicable to horizontally layered media of weak-tomoderatenorthorhombic or higher-symmetry anisotropy of arbitrary orientation is presented and tested.nWeak-anisotropy approximation is used for the derivation of the formula, in which the square of the reflectionntraveltime is expanded in terms of weak-anisotropy (WA) parameters specifying the anisotropy of the layers.nDue to the use of the weak-anisotropy approximation, the proposed formula is applicable to any offset. Its accuracyndecreases with increasing strength of anisotropy. The relation between traveltimes and WA parameters innthe formula is transparent and relatively simple. For any offset along an arbitrarily chosen single surface profile,nthe formula depends in each layer on its thickness, on the auxiliary reference P-wave velocity, on, atmost, sixWAnparameters describing P-wave orthorhombic or higher-symmetry anisotropy, and on three Euler angles specifyingnthe orientation of symmetry elements in the layer. Performed tests indicate that the maximum relativentraveltime error does not exceed 2.5% for P-wave anisotropy about 25%. Often, the errors are considerably lower.

Název v anglickém jazyce

P-wave reflection-moveout approximation for horizontally layered media of tilted weak-to-moderate orthorhombic symmetry

Popis výsledku anglicky

An approximate nonhyperbolic P-wave moveout formula applicable to horizontally layered media of weak-tomoderatenorthorhombic or higher-symmetry anisotropy of arbitrary orientation is presented and tested.nWeak-anisotropy approximation is used for the derivation of the formula, in which the square of the reflectionntraveltime is expanded in terms of weak-anisotropy (WA) parameters specifying the anisotropy of the layers.nDue to the use of the weak-anisotropy approximation, the proposed formula is applicable to any offset. Its accuracyndecreases with increasing strength of anisotropy. The relation between traveltimes and WA parameters innthe formula is transparent and relatively simple. For any offset along an arbitrarily chosen single surface profile,nthe formula depends in each layer on its thickness, on the auxiliary reference P-wave velocity, on, atmost, sixWAnparameters describing P-wave orthorhombic or higher-symmetry anisotropy, and on three Euler angles specifyingnthe orientation of symmetry elements in the layer. Performed tests indicate that the maximum relativentraveltime error does not exceed 2.5% for P-wave anisotropy about 25%. Often, the errors are considerably lower.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10507 - Volcanology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

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

178

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

104057

Kód UT WoS článku

000556790300016

EID výsledku v databázi Scopus

2-s2.0-85084829066