Post-Doctoral Program in Seismology.
Abstract
During the year reported on here, research has been carried out on the generation of seismic waves by earthquakes and explosions, the mathematical theory of body wave propagation, and the structure and dynamical properties of the upper mantle. The spectra of surface waves generated by earthquakes and underground nuclear explosions have been studied, using the Large Aperture Seismic Array (LASA) in Montana and the M.I.T. tiltmeter. Wave number spectra measured using LASA show a null for periods near 50 sec. for NTS explosions, but not for earthquakes. Shear waves generated by large underground explosions at the Nevada Test Site have been used to estimate the magnitude of tectonic strain release accompanying the explosions. Several studies have been carried out on the propagation of body waves through inhomogeneous media. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1969
- Accession Number
- AD0714112
Entities
People
- Edward J. Kelly Jr.
- Frank Press
- Keiti Aki
- M. Nafi Toksöz
- Paul E. Green Jr.
Organizations
- Massachusetts Institute of Technology