Comparison of the anisotropic-ray-theory rays and anisotropic common S-wave rays with the SH and SV reference rays in a velocity model with a split intersection singularity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385078" target="_blank" >RIV/00216208:11320/18:10385078 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s11200-015-0381-4" target="_blank" >https://doi.org/10.1007/s11200-015-0381-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11200-015-0381-4" target="_blank" >10.1007/s11200-015-0381-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of the anisotropic-ray-theory rays and anisotropic common S-wave rays with the SH and SV reference rays in a velocity model with a split intersection singularity

Popis výsledku v původním jazyce

We describe the behaviour of the anisotropic-ray-theory S-wave rays in a velocity model with a split intersection singularity. The anisotropic-ray-theory S-wave rays crossing the split intersection singularity are smoothly but very sharply bent. While the initial-value rays can be safely traced by solving Hamilton&apos;s equations of rays, it is often impossible to determine the coefficients of the equations of geodesic deviation (paraxial ray equations, dynamic ray tracing equations) and to solve them numerically. As a result, we often know neither the matrix of geometrical spreading, nor the phase shift due to caustics. We demonstrate the abrupt changes of the geometrical spreading and wavefront curvature of the fast anisotropic-ray-theory S wave. We also demonstrate the formation of caustics and wavefront triplication of the slow anisotropic-ray-theory S wave. Since the actual S waves propagate approximately along the SH and SV reference rays in this velocity model, we compare the anisotropic-ray-theory S-wave rays with the SH and SV reference rays. Since the coupling ray theory is usually calculated along the anisotropic common S-wave rays, we also compare the anisotropic common S-wave rays with the SH and SV reference rays.

Název v anglickém jazyce

Comparison of the anisotropic-ray-theory rays and anisotropic common S-wave rays with the SH and SV reference rays in a velocity model with a split intersection singularity

Popis výsledku anglicky

We describe the behaviour of the anisotropic-ray-theory S-wave rays in a velocity model with a split intersection singularity. The anisotropic-ray-theory S-wave rays crossing the split intersection singularity are smoothly but very sharply bent. While the initial-value rays can be safely traced by solving Hamilton&apos;s equations of rays, it is often impossible to determine the coefficients of the equations of geodesic deviation (paraxial ray equations, dynamic ray tracing equations) and to solve them numerically. As a result, we often know neither the matrix of geometrical spreading, nor the phase shift due to caustics. We demonstrate the abrupt changes of the geometrical spreading and wavefront curvature of the fast anisotropic-ray-theory S wave. We also demonstrate the formation of caustics and wavefront triplication of the slow anisotropic-ray-theory S wave. Since the actual S waves propagate approximately along the SH and SV reference rays in this velocity model, we compare the anisotropic-ray-theory S-wave rays with the SH and SV reference rays. Since the coupling ray theory is usually calculated along the anisotropic common S-wave rays, we also compare the anisotropic common S-wave rays with the SH and SV reference rays.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

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

2018

Kód důvěrnosti údajů

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

Název periodika

Studia Geophysica et Geodaetica

ISSN

0039-3169

e-ISSN

—

Svazek periodika

62

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

23

Strana od-do

57-79

Kód UT WoS článku

000424035200004

EID výsledku v databázi Scopus

2-s2.0-85041748929