n2 (subdirectory with all files)
n2-mod.dat
Input data for the MODEL subroutine package to specify the model used in the example described in Subsection 6.2 of Klimes and Kvasnicka (1994).
n2-net.h
SEP history file for network ray tracing in model N2, describing the input data and program execution.
n2-net.dat
Input data file for the 'net.for' program of the package 'NET'. The data file refers two files 'n2-src.dat' and 'n2-rec.dat' of this package, and to output file 'vel.out' of the 'grid.for' program. The three referred files should be located in the current directory. Program 'net.for' should generate four output files 'rays.out', 'end.out', 'tt.out', and 'err.out', containing rays, the first-arrival travel times at the receivers (endpoints), and the first-arrival travel times and their estimated errors in the rectangular grid of points. The data correspond to the example described in Subsection 6.2 of Klimes and Kvasnicka (1994) with the exception of the number of gridpoints and maximum forward-star size. Whereas 100*100*50 gridpoints are used in the paper, only 50*50*25 gridpoints are considered within the demo data in order to comply with the array dimensions of the basic version of 'net.for'.
n2-src.dat
Additional input data file for the 'net.for' program with the coordinates of a source point.
n2-rec.dat
Additional input data file for the 'net.for' program with the coordinates of receiver points.
n2-sec.dat
Main input data file for the 'sec.for' program of the package MODEL to generate the velocity isolines in Fig.6 of Klimes and Kvasnicka (1994). The data file refers file 'n2-mod.dat' of this package. The referred file should be located in the current directory.