RESEARCH IN SEISMOLOGY

• 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

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.