Record Details
Transmission and attenuation of the primary seismic wave, [delta]=100 to 600 KM
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Transmission and attenuation of the primary seismic wave, [delta]=100 to 600 KM |
| Names |
Long, L. T. (Leland Timothy)
(creator) Berg, Joseph W. Jr (advisor) |
| Date Issued | 1967-11-08 (iso8601) |
| Note | Graduation date: 1968 |
| Abstract | The character of the primary seismic wave in the range of distances between 100 and 600 km is affected by such factors as the nature of the source, exponential attenuation, crustal structure, type of wave propagation, recording site geology and instrument response. The first arrivals from the GNOME and SHOAL nuclear explosions were analyzed to show the important effects of the above factors. Crusta1 structures were developed to examine the type of wave propagation, geometrical attenuation, and Q versus depth structure. Within the frequency bands delineated by the instrument response, above 2 cps, and the reliable source energies, exponential attenuation and surface geology explained the major spectral variations in the first arrivals. Amplitude variations were explained almost entirely by geometrical and exponential attenuation. Techniques for measuring exponential attenuation were developed and applied. The Q values obtained were primarily between 100 and 200. |
| Genre | Thesis/Dissertation |
| Topic | Seismometry |
| Identifier | http://hdl.handle.net/1957/28260 |
