Depth and source mechanism estimation for special event analysis, event screening, and regional calibration

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We have summarized the advantages and disadvantages of a variety of techniques for depth and mechanism estimation and suggest that significant work remains to be done for events with magnitudes of interest for test ban monitoring. We also describe a new, waveform modeling-based tool for fast and accurate, high-resolution depth and mechanism estimation. Significant features of this tool include its speed and accuracy and its applicability at relatively high frequencies. These features allow a user to rapidly determine accurate, high-resolution depth estimates and constraints on source mechanism for relatively small magnitude (mb-4.5) events. Based on the accuracy of depth estimates ... continued below

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1.3 Megabytes pages

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Goldstein, P; Dodge, D; Ichinose, Rodgers, A; Bhattacharyya, B & Leach, R July 23, 1999.

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Description

We have summarized the advantages and disadvantages of a variety of techniques for depth and mechanism estimation and suggest that significant work remains to be done for events with magnitudes of interest for test ban monitoring. We also describe a new, waveform modeling-based tool for fast and accurate, high-resolution depth and mechanism estimation. Significant features of this tool include its speed and accuracy and its applicability at relatively high frequencies. These features allow a user to rapidly determine accurate, high-resolution depth estimates and constraints on source mechanism for relatively small magnitude (mb-4.5) events. Based on the accuracy of depth estimates obtained with this tool, we conclude it is useful for both the analysis of unusual or suspect events and for event screening. We also find that this tool provides significant constraints on source mechanism and have used it to develop ''ground-truth'' estimates of depth and mechanism for a set of events in the Middle East and North Africa. These ''ground-truth'' depths and mechanisms should be useful for regional calibration.

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1.3 Megabytes pages

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  • 21st Seismic Research Symposium: Technologies for Monitoring the Comprehensive Nuclear Test Ban Treaty, Las Vegas, NV (US), 09/21/1999--09/24/1999

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  • Report No.: UCRL-JC-134309
  • Report No.: GC0402000
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14578
  • Archival Resource Key: ark:/67531/metadc618586

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 23, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 1:11 p.m.

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Goldstein, P; Dodge, D; Ichinose, Rodgers, A; Bhattacharyya, B & Leach, R. Depth and source mechanism estimation for special event analysis, event screening, and regional calibration, article, July 23, 1999; California. (digital.library.unt.edu/ark:/67531/metadc618586/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.