Accession Number : AD0426421

Title :   SEISMIC AFTERSHOCK INVESTIGATIONS--PROJECT VELA UNIFORM JUAB VALLEY, UTAH, EARTHQUAKE OF 7 JULY 1963,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s) : Westphal, W. H.

Report Date : OCT 1963

Pagination or Media Count : 20

Abstract : One proposed method of detecting and locating the source of a clandestine underground explosion is the monitoring of post-event seismic noises (aftershocks) produced by the explosion. The basis premise of post-event seismic monitoring is that aftershocks from earthquakes and underground explosions have different charcteristics. The specific objectives are: (1) to determine the characteristics of earthquas and explosion-induced aftershock sequences, (2) to study the relationship of the foci of earthquake aftershocks to the focus of the primary earthquake, and (3) to improve methods of data analysis and interpretation of the results of aftershock monitoring. (Author)

Descriptors :   (*NUCLEAR EXPLOSIONS, DETECTION), (*SEISMIC WAVES, EARTHQUAKES), (*EARTHQUAKES, SEISMIC WAVES), SEISMOGRAPHS, SEISMOLOGICAL STATIONS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE