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Interpolation of the coupling-ray-theory Green function within ray cells

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10366946" target="_blank" >RIV/00216208:11320/17:10366946 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Interpolation of the coupling-ray-theory Green function within ray cells

  • Original language description

    The coupling-ray-theory tensor Green function for elastic S waves is frequency dependent, and is usually calculated for many frequencies. This frequency dependence represents no problem for calculating the Green function, but may be impractical or even unrealistic in storing the Green function at the nodes of dense grids, typical for applications such as Born approximation or non-linear source determination. We have already proposed the approximation of the coupling-ray-theory tensor Green function, in the vicinity of a given prevailing frequency, by two coupling-ray-theory dyadic Green functions described by their coupling-ray-theory travel times and their coupling-ray-theory amplitudes. The above mentioned prevailing-frequency approximation of the coupling ray theory enables us to interpolate the coupling-ray-theory dyadic Green functions within ray cells, and to calculate them at the nodes of dense grids. For the interpolation within ray cells, we need to separate the pairs of the prevailing-frequency coupling-ray-theory dyadic Green functions so that both the first Green function and the second Green function are continuous along rays and within ray cells. In this contribution, we describe the current progress in this field and outline the basic algorithms. We also demonstrate the preliminary numerical results in several velocity models.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    10500 - Earth and related environmental sciences

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2017

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    Expanded Abstracts of 15th Int. Congress of the Brazilian Geophysical Society

  • ISBN

  • ISSN

    2175-4551

  • e-ISSN

    neuvedeno

  • Number of pages

    6

  • Pages from-to

    1-6

  • Publisher name

    Brazilian Geophysical Society

  • Place of publication

    Rio de Janeiro

  • Event location

    Rio de Janeiro

  • Event date

    Jul 31, 2017

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article