Double Difference Earthquake Locations at the Salton Sea Geothermal Reservoir Metadata

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Title

  • Main Title Double Difference Earthquake Locations at the Salton Sea Geothermal Reservoir

Creator

  • Author: Boyle, K L
    Creator Type: Personal
  • Author: Hutchings, L J
    Creator Type: Personal
  • Author: Bonner, B P
    Creator Type: Personal
  • Author: Foxall, W
    Creator Type: Personal
  • Author: Kasameyer, P W
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

  • Creation: 2007-08-08

Language

  • English

Description

  • Content Description: The purpose of this paper is to report on processing of raw waveform data from 4547 events recorded at 12 stations between 2001 and 2005 by the Salton Sea Geothermal Field (SSGF) seismic network. We identified a central region of the network where vertically elongated distributions of hypocenters have previously been located from regional network analysis. We process the data from the local network by first autopicking first P and S arrivals; second, improving these with hand picks when necessary; then, using cross-correlation to provide very precise P and S relative arrival times. We used the HypoDD earthquake location algorithm to locate the events. We found that the originally elongated distributions of hypocenters became more tightly clustered and extend down the extent of the study volume at 10 Km. However, we found the shapes to depend on choices of location parameters. We speculate that these narrow elongated zones of seismicity may be due to stress release caused by fluid flow.
  • Physical Description: 12 p. (0.3 MB)

Subject

  • Keyword: Network Analysis
  • Keyword: Salton Sea
  • Keyword: Hypocenters
  • Keyword: Wave Forms
  • Keyword: Processing
  • Keyword: Fluid Flow
  • STI Subject Categories: 58 Geosciences
  • Keyword: Algorithms
  • Keyword: Seismicity
  • Keyword: Earthquakes
  • Keyword: Salton Sea Geothermal Field

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.: UCRL-TR-233538
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/923617
  • Office of Scientific & Technical Information Report Number: 923617
  • Archival Resource Key: ark:/67531/metadc900712

Note

  • Display Note: PDF-file: 12 pages; size: 0.3 Mbytes