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Field Testing Sesimic Phase and Polarity - Vibratory Source Signature and Recording Systems
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 6th Congress of the Balkan Geophysical Society, Oct 2011, cp-262-00016
Abstract
There have been many field testing methods to check the phase and polarity of the recording system and vibratory source on seismic surveys. Applications of different test techniques lead have led some confusion due to crews having different manufacturer’s geophones, accelerometers and vibrators. The aim of phase and polarity testing in the field is to ensure that recording system and vibratory source polarity conventions are properly implemented and polarity of the data correctly being recorded. In order to avoid any confusion, phase and polarity of the final product should be discussed in the initial project start-up with the company representative and crew supervisor. The full system of data acquisition and processing must be considered to make meaningful statements of the phase and polarity of final products. In this paper, phase and polarity field testing of the two types of vibratory sources use of two different vibrator accelerometers will be explained, implementation of the field quality control for the recording system and source polarity will be discussed and established definitions of the polarity “Normal and Reverse Polarity” real raw data examples will be presented.