PS reflection moveout in a homogeneous anisotropic layer of arbitrary symmetry and tilt

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F23%3A00573287" target="_blank" >RIV/67985530:_____/23:00573287 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/23:10473651

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0926985123001404" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926985123001404</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jappgeo.2023.105062" target="_blank" >10.1016/j.jappgeo.2023.105062</a>

Result language

angličtina

Original language name

PS reflection moveout in a homogeneous anisotropic layer of arbitrary symmetry and tilt

Original language description

Use of unconverted reflected PP waves leads to moveout formulae, which relate the moveout to only a limited number of parameters specifying anisotropy. Use of converted reflected PS waves extends the number of parameters to, generally, a complete set of twenty-one parameters. It leads, on the other hand, to more complicated formulae and phenomena unknown from studies of unconverted PP waves. In anisotropic media one has to deal with the existence of two S waves and their singularities, acoustic approximation cannot be used. We present and test approximate formulae for the reflection moveout of PS waves converted at a horizontal reflector underlying a homogeneous layer of arbitrary anisotropy symmetry and orientation. For their derivation, we use the combination of weak-anisotropy approximation and A-parameters specifying anisotropy. The complete set of twentyone A-parameters represents an alternative to twenty-one independent elements of the stiffness tensor. In addition to the moveout formulae for separate PS1 and PS2 waves, we also present moveout formula for a P to common S wave whose traveltimes represent an average of traveltimes of PS1 and PS2 waves. Use of the P to common S wave reflection leads to several simplifications. Presented tests indicate that for most offsets and models with P-wave anisotropy up-to to 26% and S-wave anisotropy over 25%, the relative traveltime errors do not exceed 2.5%.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10507 - Volcanology

Project

<a href="/en/project/GA20-06887S" target="_blank" >GA20-06887S: Seismic waves in heterogeneous anisotropic viscoelastic media</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Applied Geophysics

ISSN

0926-9851

e-ISSN

1879-1859

Volume of the periodical

215

Issue of the periodical within the volume

August

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

105062

UT code for WoS article

001037983700001

EID of the result in the Scopus database

2-s2.0-85163452757