Document Details


Title:
On reducing the amplitude of surface waves by source arrays
Author(s):
Subject Terms:
SEISMIC SURFACE WAVES/amplitudes; SEISMIC SURFACE WAVES/phase shift; NUCLEAR EXPLOSIONS/nuclear explosion detection; AMPLITUDES; SEISMIC EVENTS; SEISMIC ARRAYS; SEISMIC SOURCES; VERIFICATION; ON-SITE INSPECTION; MEASURING INSTRUMENTS
Document Location:
U.S. Deptartment of Commerce, Technology Administration, National Technical Information Service, Springfield, VA, 22161, Phone:(703) 487-4650, Fax:(703) 321-8547
Document Categories:
National Security, Policy, and Warfare\Arms Control; Nuclear Weapons and Related Technology\General
Document Type:
REPORT
Publication Date:
1959 Nov 23
Declassification Date:
1996 May 27
Declassification Status:
Declassified
Document Pages:
13
Accession Number:
OOLDE97051324
Document Number(s):
UCRL-ID-125527; DE97051805
Originating Research Org.:
Lawrence Livermore National Lab., CA (United States)
OpenNet Entry Date:
1997 Jun 30
Description/Abstract:
The Geneva conference of experts stated that surface waves help define the nature of a seismic perturbation. A 'phase equalization' method has been proposed by several seismologists to determine the polarity of the source using crustal surface waves. In this report a horizontal source array is designed which will reduce the amplitude of the crustal surface waves by a factor of five. Experimental data from Geophysical Prospecting is cited to support the effectiveness of such arrays. It is thought that phase shifts will accompany this amplitude reduction. It is concluded that these amplitude and phase changes will make the phase equalization method unreliable. The significance of the report is that the Geneva negotiations must take into account the possibility of horizontal as well as vertical arrays.


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