.... O'Donnell A. (1988) . Network-averaged teleseismic P -wave spectra for underground explosions. Part I. Definitions and examples , Bull. Seism. Soc. Am. 79 , 141 - 155 . Springer D. L. (1974...

... of large underground explosions are given, which have a mechanism that may be satisfactorily explained by means of the theoretical model presented in this paper. References Alterman Z. Abramovici F...

...Vanessa J. Napoli; David R. Russell Abstract Rg signals measured between 1 and 5 Hz at local and near‐regional distances provide a viable method for estimating the yields of atmospheric and underground explosions. However, tested methods have been restricted to single or slowly changing source...

.... Relative moment tensor inversion (RMTI) developed by Dahm (1996) eliminates the need for calculation of the Green’s functions. In this article, the RMTI method is modified to perform MT inversion for a group of closely located shallow seismic events (e.g., underground explosions) by incorporating...

... in granite ( HARDHAT , SHOAL , and PILEDRIVER ). The amplitudes of the far‐field seismic waves generated by a contained underground explosion are determined by the volume change in the source region (e.g., Latter et al. , 1959 ). Because the final state of the cavity is controlled by the static...

... ‐factors and K ‐factors. The use of regional distance long‐period, complete waveform data to determine the seismic moment tensor and discriminate the source type of earthquakes, underground cavity collapse, and nuclear explosions has been demonstrated for events in the western United States...

...Jessie L. Bonner; David R. Russell; Robert E. Reinke Abstract The May 2012 HUMBLE REDWOOD III (HRIII) experiment series in New Mexico provides a unique dataset to study surface‐wave generation from explosions conducted above and underground for different rock types. Four 90.6 kg trinitrotoluene...

...J. R. Murphy; B. W. Barker; D. D. Sultanov; O. P. Kuznetsov Abstract A systematic analysis of the frequency-dependent source scaling of regional phase data observed from underground nuclear explosions conducted at the former Soviet Semipalatinsk Test Site, the Chinese Lop Nor Test Site, the Russian...

... of the shear modulus of soils by more than 3 orders of magnitude. Liquefaction documented during underground explosions is characterized by a threshold energy several orders of magnitude greater than that for liquefaction during earthquakes but shows a similar functional relation between E and R max...

...Thorne Lay; Tianrun Zhang Abstract Characterization of near-source crustal properties for underground nuclear explosions using distant seismic observations can potentially improve nuclear test monitoring capabilities. Previous analyses of the relative spectral content of direct P waves and P -wave...

.... Alexander W. N. Dohner E. L. Mixon C. E. (1982) . Extension of Digital Data Base of World-Wide and Canadian Seismograms for Selected Underground Explosions , ENSCO...

...Brian P. Cohee; Thorne Lay Abstract Detailed forward modeling of long-period shear waves for two large underground explosions at the Southern Novaya Zemlya test site indicates that the appropriate equivalent double-couple orientation for the tectonic release radiation is vertical strike-slip...

... Report O33/70 , HMSO , London, England . Marshall P. D. Basham P. (1972) . Discrimination between earthquakes and underground explosions employing an improved M S scale...

...Thorne Lay Abstract A systematic array processing analysis is applied to 916 teleseismic short-period P -wave signals from 25 underground explosions at Pahute Mesa in order to establish whether coherent arrivals scattered from near-source velocity heterogeneity can be identified. The signal...

...Thorne Lay Abstract An analysis of dispersion in more than 1600 teleseismic short-period P waves from 46 underground explosions has established that near-source effects are responsible for systematic frequency-dependent variations observed in the first 15 sec of the P signals. Explosions from...

...Steven M. Day; J. Theodore Cherry; Norton Rimer; Jeffry L. Stevens Abstract Reversal of teleseismic Rayleigh wave polarity has been observed for some underground explosions in eastern Kazakh. Furthermore, the reversed-polarity Rayleigh waves are observed to be time-delayed by several seconds. We...

...Thorne Lay; Joan L. Welc Abstract An extensive data set of more than 1600 teleseismic short-period P waves from 46 underground nuclear explosions is analyzed to establish near-source contributions to the first 15 sec of the P signals. The near-source components are isolated by event-to-event...

... of selected East Kazakhstan underground explosions , Bull. Seism. Soc. Am. 76 , 1241 - 1251 . Bulletin of the Seismological Society of America, Vol. 77, No. 2, pp. 679-681, April 1987 SHORT NOTE Lg MAGNITUDES OF DEGELEN, EAST KAZAKHSTAN, UNDERGROUND EXPLOSIONS BY OTTO W. NUTTLI In a previous paper...

...Otto W. Nuttli Abstract The amplitude of 1-sec period Lg waves, as recorded on seismograms of WWSSN stations in southern Asia and Scandinavia, are used to determine m b ( Lg ) values for 62 underground nuclear explosions in the eastern portion of the East Kazakhstan Test Site. The explosions were...

...Steven M. Day; Norton Rimer; J. Theodore Cherry abstract Anomalous surface wave observations from underground explosions have been widely attributed to the phenomenon of spall, i.e., the detachment and subsequent slapdown of near-surface layers in response to explosion-induced tensile stresses. We...