Modeling the NPE with finite sources and empirical Green`s functions
- Lawrence Livermore National Lab., CA (United States); and others
In order to better understand the source characteristics of both nuclear and chemical explosions for purposes of discrimination, we have modeled the NPE chemical explosion as a finite source and with empirical Green`s functions. Seismograms are synthesized at four sties to test the validity of source models. We use a smaller chemical explosion detonated in the vicinity of the working point to obtain empirical Green`s functions. Empirical Green`s functions contain all the linear information of the geology along the propagation path and recording site, which are identical for chemical or nuclear explosions, and therefore reduce the variability in modeling the source of the larger event. We further constrain the solution to have the overall source duration obtained from point-source deconvolution results. In modeling the source, we consider both an elastic source on a spherical surface and an inelastic expanding spherical volume source. We found that the spherical volume solution provides better fits to observed seismograms. The potential to identify secondary sources was examined, but the resolution is too poor to be definitive.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- OSTI ID:
- 95999
- Report Number(s):
- CONF-9404100-; ON: DE95011413; TRN: 95:005144-0019
- Resource Relation:
- Conference: Symposium on the non-proliferation experiment results and implications for test ban treaties, Rockville, MD (United States), 19-21 Apr 1994; Other Information: PBD: [1994]; Related Information: Is Part Of Proceedings of the symposium on the Non-Proliferation Experiment (NPE): Results and implications for test ban treaties; Denny, M.D.; Stull, S.P. [eds.]; PB: 599 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
35 ARMS CONTROL
99 MATHEMATICS
COMPUTERS
INFORMATION SCIENCE
MANAGEMENT
LAW
MISCELLANEOUS
AMMONIUM NITRATES
DETONATIONS
FUEL OILS
CHEMICAL EXPLOSIONS
COMPARATIVE EVALUATIONS
NON-PROLIFERATION TREATY
VERIFICATION
NUCLEAR EXPLOSIONS
WAVE FORMS
UNDERGROUND EXPLOSIONS
GROUND MOTION
VELOCITY
NUCLEAR EXPLOSION DETECTION
WAVE PROPAGATION
SEISMIC DETECTORS
EARTHQUAKES
GREEN FUNCTION
SEISMOGRAPHS