Identification of Earthquakes and Underground Explosions
Abstract
The report describes the progress of research made for the first six months of FY1972-1973. The research has been concentrated in several areas. Firstly, investigations of Rayleigh Wave dispersion over a continental path have shown a dispersion wave stability that has enabled the development of 'chirp' (or matched) filter techniques. When suitably constructed these filters permit the detection of surface waves with low signal-to-noise ratios, and enable the separation of mixed events. Secondly, array processing techniques in frequency- wave-number space have been significantly improved. Thirdly, a method has been described for correcting the bias in the estimation of body wave magnitudes (m sub b). And, fourthly, two-dimensional model studies have been used to corroborate theoretical predictions of surface wave spectra for an oceanic upper mantle model.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1973
- Accession Number
- AD0761580
Entities
People
- Eugene T. Herrin
Organizations
- Southern Methodist University