RESEARCH IN SEISMOLOGY

Research in seismology on fundamental problems related to the detection, location and identification of underground explosions is described. Work in progress pertains to studies of (1) long period P-wave amplitude anomalies at the Montana LASA, (2) determination of anomalous structure (in Fennoscand...

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Bibliographic Details
Main Authors: Kisslinger, Carl, Nuttli, Otto W, Stauder, William V, Duda, Seweryn J
Other Authors: SAINT LOUIS UNIV MO DEPT OF GEOPHYSICS AND GEOPHYSICAL ENGINEERING
Format: Text
Language:English
Published: 1968
Subjects:
Seismology
Seismic Detection and Detectors
*SEISMIC WAVES
*SEISMOLOGICAL STATIONS
*UNDERGROUND EXPLOSIONS
ANOMALIES
DETECTION
MICROSEISMS
NUCLEAR EXPLOSIONS
PHASED ARRAYS
POWER SPECTRA
RAYLEIGH WAVES
STRUCTURAL GEOLOGY
LASA(LARGE APERTURE SEISMIC ARRAY)
LARGE APERTURE SEISMIC ARRAY
LOVE WAVES
PRIMARY WAVES
SECONDARY WAVES
Fennoscandia
Online Access:http://www.dtic.mil/docs/citations/AD0684172
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0684172
Description
Summary:Research in seismology on fundamental problems related to the detection, location and identification of underground explosions is described. Work in progress pertains to studies of (1) long period P-wave amplitude anomalies at the Montana LASA, (2) determination of anomalous structure (in Fennoscandia) by use of first derivatives of P-wave travel times, (3) crust and mantle S-wave velocity distribution and its regional variations, (4) a new method of earthquake energy determination, (5) the effect of focal depth on the spectrum of body waves, and (6) the frequency dependence of transmission through a layer over a half-space examined by modeling seismology techniques. Completed research is summarized and has investigated (1) Love and Rayleigh wave phase velocities over U. S. continental paths, (2) decoupling and source function for explosions in a three-dimensional model, and (3) exact solutions for the displacement components in head waves due to an impulsive double couple source. See also AD0640637. Sponsored in part by the DARPA.

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