Accession Number : ADA337819

Title :   Broadband Signal Enhancement of Seismic Array Data: Application to Long-period Surface Waves and High-frequency Wavefields

Descriptive Note : Final rept. 1 Nov 93-30 Jun 97

Corporate Author : INDIANA UNIV BLOOMINGTON DEPT OF GEOLOGICAL SCIENCES

Personal Author(s) : Pavlis, Gary L.

PDF Url : ADA337819

Report Date : 31 JAN 1998

Pagination or Media Count : 7

Abstract : The objectives of this program of broadband signal enhancement of seismic array data were the: (a) Development of new techniques for enhancement of low signal-to-noise surface wave signals recorded by broadband seismic arrays. The tasks were: Assembly of test data sets; Estimation of dispersion curves for reference events; Algorithm development. (b) Research on fundamental properties of high-frequency wavefields. The tasks were: Analysis of array data using scientific visualization tools; Analysis of signal coherence versus receiver separation and frequency for different array data; Analysis of frequency dependent polarization for different array data.

Descriptors :   *SEISMIC DATA, *SEISMIC ARRAYS, ALGORITHMS, SIGNAL PROCESSING, SURFACE WAVES, DATA MANAGEMENT, SIGNAL TO NOISE RATIO, SEISMIC WAVES, SEISMIC DISCRIMINATION.

Subject Categories : Seismic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE