Seismic Event Location Using Levenberg-Marquardt Least Squares Inversion Metadata

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Title

  • Main Title Seismic Event Location Using Levenberg-Marquardt Least Squares Inversion

Creator

  • Author: Ballard, Sanford
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: Albuquerque, New Mexico
    Additional Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)

Date

  • Creation: 2002-10

Language

  • English

Description

  • Content Description: The most widely used algorithm for estimating seismic event hypocenters and origin times is iterative linear least squares inversion. In this paper we review the mathematical basis of the algorithm and discuss the major assumptions made during its derivation. We go on to explore the utility of using Levenberg-Marquardt damping to improve the performance of the algorithm in cases where some of these assumptions are violated. We also describe how location parameter uncertainties are calculated. A technique to estimate an initial seismic event location is described in an appendix.
  • Physical Description: 25 pages

Subject

  • Keyword: Hypocenters
  • Keyword: Detection
  • Keyword: Calculation Methods
  • STI Subject Categories: 58 Geosciences
  • Keyword: Seismic Events
  • Keyword: Algorithms
  • Keyword: Performance

Source

  • Other Information: PBD: 1 Oct 2002

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: SAND2002-3083
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/803290
  • Office of Scientific & Technical Information Report Number: 803290
  • Archival Resource Key: ark:/67531/metadc741728
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