2.1 Directories

The whole SEISAN system is located in subdirectories residing under the main directory SEISMO. For more details, see chapter 3 on installation. The system contains the following main subdirectories:

REA:	Earthquake readings and full epicenter solutions in a database
WOR:	The users work directory, initially empty
TMP	Temporal storage of files, initially empty
PRO:	Programs, source code and executables
LIB:	Libraries and subroutines
INC:	Include files for programs and subroutines in PRO and LIB
COM:	Command procedures
DAT:	Default and parameter files, e.g. station coordinates
WAV:	Digital waveform data files
CAL:	System calibration files
INF:	Documentation and information
ISO:	Macroseismic information
SUP:	Supplementary files and programs

In the following, the above subdirectories will mostly be called directories to avoid always referring to SEISMO. All directories use capital letters, however this only makes a difference in the Unix versions. The directory structure is used as a tree like structure for quick access to individual files in the REA directory, which therefore will appear as a simple database to the user. The next section is a description of the database directories; the other directories are described in chapter 44. Figure 2.1 shows the tree structure of SEISAN.

Figure 2.1: Structure of SEISAN. Note that BERGE under WAV is optional and DELET (not shown) under REA has a similar directory structure as e.g. NAO.