Seismic Discrimination
Abstract
Progress in the definition of spectral characteristics of explosions and earthquakes and in the determination of their time functions is reported. The complexities of surface wave and body wave propagation in a heterogeneous Earth are further considered, and the coherence of seismic signals is discussed with reference to different mantle regions. A technique for computing signals reflected from transition layers is given. The first NORSAR data show travel- time anomalies much more complex than coud be associated with sub-NORSAR structure. NORSAR spectraforms are described for several Asian events. A transfer function technique is used to determine sub-LASA structure. Significance tests for Vespagram and Beamsplit displays are described. Upgrading of the Lincoln data analysis facilities is reported.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1971
- Accession Number
- AD0728210
Entities
People
- David Davies
Organizations
- Massachusetts Institute of Technology