caa a22 4500 477047181 CHVBK 20180405111333.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF00882053 doi (NATIONALLICENCE)springer-10.1007/BF00882053 Hybrid seismic modeling based on discrete-wave number and finite-difference methods [Elektronische Daten] [Jiří Zahradník, Peter Moczo] Any calculation of seismic wave propagation comprising the seismic source, the travel path, and the receiver site in a single finite-difference (FD) model requires a considerable amount of computer time and memory. Moreover, the methods currently available for including point sources in the 2D FD calculations are far-field approximations only. Therefore we have developed a new hybrid method for treating the seismic wave fields at localized 2D near-surface structures embedded in a 1D background medium, and excited by a point source. The source radiation and propagation in the background model is solved by the discrete-wave number (DW) method, while the propagation in the local 2D structure is calculated by the FD method. The coupling between the two sets of calculations is performed on a rectangular excitation box surrounding the local structure. We show the usefulness of the method in ground-motion studies where both near-field source effects and local site effects are important. Technical problems connected with the inconsistency between the 3D source radiation and the 2D FD calculation are minor for the relatively distant in-plane point explosive sources, but are more serious for the in-plane dislocation sources. Birkhäuser Verlag, 1996 Seismic waves nationallicence strong ground motions nationallicence discrete-wave number method nationallicence finite-difference method nationallicence hybrid method nationallicence Zahradník Jiří Department of Geophysics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00, Praha, Czech Republic aut Moczo Peter Geophysical Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 842 28, Bratislava, Slovak Republic aut pure and applied geophysics Birkhäuser-Verlag 148/1-2(1996-03-01), 21-38 0033-4553 148:1-2<21 1996 148 24 https://doi.org/10.1007/BF00882053 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00882053 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zahradník Jiří Department of Geophysics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00, Praha, Czech Republic aut NATIONALLICENCE 700 1- Moczo Peter Geophysical Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 842 28, Bratislava, Slovak Republic aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 148/1-2(1996-03-01), 21-38 0033-4553 148:1-2<21 1996 148 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer