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Title: Interferometry analysis of SPE seismic records


No abstract provided.

 [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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DOE Contract Number:
Resource Type:
Technical Report
Country of Publication:
United States
58 GEOSCIENCES; Seismic sources, explosion, interferometry

Citation Formats

Larmat, Carene, Rougier, Esteban, Cleveland, Kenneth Michael, and Patton, Howard John. Interferometry analysis of SPE seismic records. United States: N. p., 2017. Web. doi:10.2172/1345922.
Larmat, Carene, Rougier, Esteban, Cleveland, Kenneth Michael, & Patton, Howard John. Interferometry analysis of SPE seismic records. United States. doi:10.2172/1345922.
Larmat, Carene, Rougier, Esteban, Cleveland, Kenneth Michael, and Patton, Howard John. Fri . "Interferometry analysis of SPE seismic records". United States. doi:10.2172/1345922.
title = {Interferometry analysis of SPE seismic records},
author = {Larmat, Carene and Rougier, Esteban and Cleveland, Kenneth Michael and Patton, Howard John},
abstractNote = {No abstract provided.},
doi = {10.2172/1345922},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Mar 03 00:00:00 EST 2017},
month = {Fri Mar 03 00:00:00 EST 2017}

Technical Report:

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  • Regional seismic records for eleven underground nuclear explosions were processed and analyzed (empirically) in a search for source and path related patterns in the signals. These nuclear tests were conducted between August, 1979 and April, 1980; all were located in Yucca Flat at the Nevada Test Site (NTS). The seismic signals generated by these explosions were recorded on the LLNL four-station network, located at distances of 200 to 400 km from the NTS. Amplitudes were measured for consistently recorded vertical component body waves, and for vertical and transverse components of surface waves. Correlation between phase amplitudes was statistically determined, andmore » amplitude ratios were compared for four stations for the same event, and at a single station for the complete set of events. Previous studies have shown that certain amplitude ratios are relatively unaffected by the size of the explosion but sensitive to propagation effects. For this set of events, we do not find a statistically significant change in the ratio of Pg:Lg due to different propagation paths to the four stations. We do, however, find increased variability in the amplitude measurements for the smaller events in the population considered in this study.« less
  • The purpose of the SPE is to develop a more physics-based model for nuclear explosion identification to understand the development of S-waves from explosion sources in order to enhance nuclear test ban treaty monitoring.
  • As part of the contract with the US Department of Energy, Nevada Field Office (DOE/NV), URS/John A. Blume & Associates, Engineers (URS/Blume) maintains a network of seismographs in southern Nevada to monitor the ground motion generated by the underground nuclear explosions (UNEs) at the Nevada Test Site (NTS). The seismographs are located in the communities surrounding the NTS and the Las Vegas valley. When these seismographs are not used for monitoring the UNE generated motions, a limited number of seismographs are maintained for monitoring motion generated by other than UNEs (e.g. motion generated by earthquakes, wind, blast). During the subjectmore » earthquake aftershocks of July 5 and September 13, 1992, a total of 20 of these systems recorded the earthquake motions. This report contains the recorded data.« less
  • Event identification that combines data from a diverse range of sensor types, such as seismic, hydroacoustic, infrasound, optical, or acoustic sensors, has been discussed recently as a way to improve treaty monitoring technology, especially for a Comprehensive Test Ban Treaty. In this exploratory study the authors compare features in acoustic and seismic data from ripple-fired mining blasts, in an effort to understand the issues of incorporating data fusion into seismic monitoring. They study the possibility of identifying features such as spectral scalloping at high frequencies using acoustic signals recorded in the near field during mining blasts. Recorded acoustic and seismicmore » data from two mining blasts at Carlin, Nevada, were analyzed. The authors have found that there is a clear presence of the periodic and impulsive nature of the ripple-fire source present in the acoustic recordings at high frequencies. They have discovered that the arrival time and duration of the acoustic recordings are also clearly discernible at high frequencies. This is in contrast to the absence of these features in seismic signals, due to attenuation and scattering at high frequencies. The association of signals from different sensors offers solutions for difficult monitoring problems. Seismic or acoustic signals individually may not be able to detect a nuclear test hidden under a typical mining blast. However, the presence of an underground nuclear test during a mining event could be determined by deriving the mining explosion source from the acoustic recording, modeling a seismic signal from the derived source, and subtracting the modeled seismic signal from the seismic recording for the event. Recommendations in the design of data fusion systems for treaty monitoring are suggested.« less