Desenvolvimento de software livre para processamentos de dados magnetotelúricos

Abstract

This work deals with the development of PampaMT Software. This program was developed to assist and optimize the data processing of the Magnetotelluric (MT) geophysical method. The MT method uses natural electromagnetic sources from planet Earth to investigate the distribution of electrical conductivity in subsurface. The frequency range used by the MT comprises from 10-4 Hz to 104 Hz, enabling geophysical investigation up to 100 meters to 200 kilometers deep. The program was developed using the Python programming language under the Free software license. The program unites numerous programs and routines, of free use, consecrated in the magnetotelluric data processing. The use of the program will be performed through a graphical user interface (GUI), thus facilitating the processing steps for new users. What sets it apart from the programs and routines currently available for data processing that use only command lines and excessively manual procedures for beginners. Such factors often become exhausting training for new users and delay the production of results working with MT data. The validation of the program’s efficiency, in terms of time and usability, was performed through the processing of real data, located in the northeastern region of Brazil, executed by users who are familiar with MT processing, along with tests performed with users without any familiarity. The tests make it possible to validate the efficiency of the program and compare it with the techniques already consolidated in the MT data processing.