Local skewness attribute as a seismic phase detector

Published as Interpretation, 2, no. 1, SA49-SA56, (2014)

Local skewness attribute as a seismic phase detector

Sergey Fomeland Mirko van der Baan

Bureau of Economic Geology,
John A. and Katherine G. Jackson School of Geosciences
The University of Texas at Austin
University Station, Box X
Austin, TX 78713-8924
USA
sergey.fomel@beg.utexas.edu
Department of Physics
University of Alberta
CEB 11322 - 89 Avenue
Edmonton, Alberta T6G 2G7
Canada
Mirko.VanderBaan@ualberta.ca

Abstract:

We propose a novel seismic attribute, local skewness, as an indicator of localized phase of seismic signals. The proposed attribute appears to have a higher dynamical range and a better stability than the previously used local kurtosis. Synthetic and real data examples demonstrate the effectiveness of local skewness in detecting and correcting time-varying, locally-observed phase of seismic signals.

Local skewness attribute as a seismic phase detector