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Title: Characterization of interface reflection coefficients using a finite-difference injection technique

Abstract

In this paper, a numerical wave field injection technique for characterizing the reflection coefficient of a planar medium interface is proposed. By injecting recorded wave field quantities into a 3D finite-difference calculation, two key objectives are addressed: first, the recorded wave field is separated into its incident and reflected constituents without the need of spatial Fourier transforms or a temporal separation of incident and reflected parts in the recorded data. Second, the separated constituents are independently extrapolated to the location of the reflecting interface to determine its reflecting properties. The methodology is experimentally validated on 3D laboratory data consisting of reflections from the water-air interface in a water tank and is shown to give accurate results for incidence angles of up to 60°.

Authors:
 [1];  [1];  [1];  [2];  [1]
  1. ETH Zurich (Switzerland)
  2. Statoil Research Centre, Trondheim (Norway)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1463542
Report Number(s):
LA-UR-17-22881
Journal ID: ISSN 0001-4966
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Acoustical Society of America
Additional Journal Information:
Journal Volume: 142; Journal Issue: 6; Journal ID: ISSN 0001-4966
Publisher:
Acoustical Society of America
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Earth Sciences; acoustics

Citation Formats

Borsing, Nele, Donahue, Carly M., van Manen, Dirk-Jan, Amundsen, Lasse, and Robertsson, Johan O. A. Characterization of interface reflection coefficients using a finite-difference injection technique. United States: N. p., 2017. Web. doi:10.1121/1.5016467.
Borsing, Nele, Donahue, Carly M., van Manen, Dirk-Jan, Amundsen, Lasse, & Robertsson, Johan O. A. Characterization of interface reflection coefficients using a finite-difference injection technique. United States. doi:10.1121/1.5016467.
Borsing, Nele, Donahue, Carly M., van Manen, Dirk-Jan, Amundsen, Lasse, and Robertsson, Johan O. A. Tue . "Characterization of interface reflection coefficients using a finite-difference injection technique". United States. doi:10.1121/1.5016467. https://www.osti.gov/servlets/purl/1463542.
@article{osti_1463542,
title = {Characterization of interface reflection coefficients using a finite-difference injection technique},
author = {Borsing, Nele and Donahue, Carly M. and van Manen, Dirk-Jan and Amundsen, Lasse and Robertsson, Johan O. A.},
abstractNote = {In this paper, a numerical wave field injection technique for characterizing the reflection coefficient of a planar medium interface is proposed. By injecting recorded wave field quantities into a 3D finite-difference calculation, two key objectives are addressed: first, the recorded wave field is separated into its incident and reflected constituents without the need of spatial Fourier transforms or a temporal separation of incident and reflected parts in the recorded data. Second, the separated constituents are independently extrapolated to the location of the reflecting interface to determine its reflecting properties. The methodology is experimentally validated on 3D laboratory data consisting of reflections from the water-air interface in a water tank and is shown to give accurate results for incidence angles of up to 60°.},
doi = {10.1121/1.5016467},
journal = {Journal of the Acoustical Society of America},
number = 6,
volume = 142,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Fig. 1 Fig. 1: (a) Schematic of the numerical implementation of the MPS injection on a second-order accurate staggered FD grid. Experimentally recorded pressure (prec) and vertical particle velocity (vrecz ) are injected as dipole and monopole sources on Sinj , respectively. As a result, the wave is separated into its incidentmore » (pi) and reflected (pr) constituents which propagate in opposite directions away from Sinj . Absorbing boundaries (PMLs) attenuate outward propagating waves. (b) left, middle Schematic of the experimental setup, right Picture of the experimental setup. Although the sketches are only shown in 2D here, both the experiment and the numerical calculation were carried out in 3D.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.