ReWARD Project - the Lennartz Mars-88 seismic data processing

ReWARD Project
Refraction/Wide-Angle Reflections Database

INGV-Italy
Unit of Milano

R/WAR italian deep seismic data

Lennartz Mars-88 data processing - few notes

For a proper Lennartz MARS-88/FD⁽¹⁾ digital seismic data processing, an ad-hoc procedure was created and implemented, as already done for previous project. It has two funcional steps: data retrieval (MS-DOS enviroment) and further data processing (Matlab⁽²⁾-environment):

MS-DOS environment - original data on Floppy disk (Mars-88 format)

data conversion, from Lennartz to Pitsa⁽³⁾ format, using Marsdump⁽⁴⁾ free software (see FDLS, MARSDUMP, MARSSAVE/LIST html manual, copy of the Lennartz original one);
Pitsa-files creation (PF), Ascii file;
File-list creation (FL): Pitsa files to be processed; text file;
Input-file creation (IF): containing all the time/space coordinates of both the shot and receiver points); text file.

MATLAB (Windows platform) environment:

FL and IF files loading;
Loop processing (WHILE structure) from 1 to End-of-file (FL)

reads the file to be processed (PF, selected from FL);

loads PF file in a Matlab matrix structure (Mat_seis);
reads from IF the shot-time ST;
from PF reads and loads the chosen time-window of selected signal (related to ST);

Mat_seis saving, with all shots listed in FL (for further processing);
Further processing (stacks, filters, time-windows, etc...)

Mixed environment

see the main products and facts page (with original contribution in processing data, by I.Guerra, 2003)

(1)	Lennartz Electronic GmbH. website [ link ] - list of Mars-88 Operating Manuals available at INGV-MI (2011): here
(2)	The MatWorks (2004). MATLAB: the Language of Technical computing [ link ]
(3)	Scherbaum F. et al. (1999): "PITSA: User Manual" (ver. 5, Jan. 1999) [ link ]
(4)	Lennartz electronic GmbH. (1990). Unsupported Mars-88 DOS software. [ rar files: before year 2000 after 2000 ] [ user manual ]

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