Merge branch 'master' of https://github.com/ahay/src

Author: sfomel

book/tccs/group/SConstruct

@@ -1,3 +1,3 @@
 from rsf.tex import *
 
-End(use='amsmath')
+End(options='reproduce',use='hyperref,listings,amsmath',color='ALL')

book/tccs/group/group.ipynb

@@ -1,27 +1,21 @@
 \published{Geophysical Prospecting, v. 52, 247-259 (2004)}
-\title{On anelliptic approximations for $qP$ velocities in
-transversally isotropic media}
+\title{On anelliptic approximations for $qP$ velocities in VTI media}
 
 \email{[email protected]}
 \author{Sergey Fomel}
 
 \maketitle
 
 \begin{abstract}
-I develop a unified approach for approximating phase and group
-  velocities of $qP$ seismic waves in a transversally isotropic medium
-  with the vertical axis of symmetry (VTI). While the exact phase
-  velocity expressions involve four independent parameters to
-  characterize the elastic medium, the proposed approximate
-  expressions use only three parameters. This makes them more
-  convenient for use in surface seismic experiments, where estimation
-  of all the four parameters is problematic. The three-parameter
-  phase-velocity approximation coincides with the previously published
-  ``acoustic'' approximation of Alkhalifah. The group velocity
-  approximation is `new and noticeably more accurate than some of the
-  previously published approximations. I demonstrate an application of
-  the group velocity approximation for finite-difference computation
-  of traveltimes.
+A unified approach to approximating phase and group velocities of qP seismic waves
+in a transversely isotropic medium with vertical axis of symmetry (VTI) is developed.
+While the exact phase-velocity expressions involve four independent parameters to
+characterize the elastic medium, the proposed approximate expressions use only three
+parameters. This makes them more convenient for use in surface seismic experiments,
+where the estimation of all four parameters is problematic. The three-parameter phase-velocity approximation coincides with the previously published ‘acoustic’ approximation of Alkhalifah. The group-velocity approximation is new and noticeably more
+accurate than some of the previously published approximations. An application of
+the group-velocity approximation for finite-difference computation of traveltimes is
+shown.
 \end{abstract}
 
 \section{Introduction}
@@ -675,9 +669,7 @@ \section{Application: Finite-difference traveltime computation}
   vertical velocity is taken equal to the NMO velocity $V_n$.}
 
 \section{Conclusions}
-
-I have developed a general approach for approximating both phase and group
-velocities in a VTI medium. Suggested approximations use three elastic
+A general approach to approximating both phase and group velocities in a VTI medium has been developed. The suggested approximations use three elastic
 parameters as opposed to the four parameters in the exact phase velocity
 expression. The phase velocity approximation coincides with the acoustic
 approximation of \cite{GEO63-02-06230631,GEO65-04-12391250} but is derived

book/tccs/group/paper.tex

@@ -10,11 +10,11 @@ zerotrace hilbert cdivdir cabs cemd1 cemd2 snr2 snr3 snrcyk preerror
 threshold1 tsmf fxdecon simidenoise bin2rsf rsf2bin halfthr hradon
 suplane simidenoise1 rmtrace prekirch psmig pocssemb afd2d
 prekirchsr simpostkirch presr nlm1 nlm2 dblendseis svmf genshotscyk dip_fb dipn_fb dipl dipln selfblend ycvelxf ycvelinvww afd2domp low addtrace matlr pnmomf expd ltfts ltftn fxynpre fxynpre2
-orthol orthon orthonc orthoa smoothn warpscann dipn efd3dmt aps3d sint2 sint3 eikonal_rtp eikonal_surf eikonal_surf_dv1d txt2rsf rsf2txt npef5_recon
+orthol orthon orthonc orthoa smoothn warpscann dipn efd3dmt sint2 sint3 eikonal_rtp eikonal_surf eikonal_surf_dv1d txt2rsf rsf2txt npef5_recon
 '''
 ccprogs = 'diffcxx'
 
-# broken: Mnpef5
+# broken: npef5 aps3d
 
 # mutter3 aps3d npef5