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Commission on Seismological Observation and Interpretation (CoSOI)

Scope

The essence of seismology lies in the observation and interpretation of earthquakes and earthquake-generated ground motions, together with effective data distribution and analysis. There is a continuing need to improve mechanisms for the archiving, dissemination and analysis of these data.

The real Earth structure varies in three-dimensions, can show variation with time and is anisotropic and anelastic in part. Thus methods for seismogram interpretation need to take account of the complexities, which are revealed in the currently available high quality data.

Topics of current interest to the Commission include:

• Developments in seismic instrumentation, networks and data centers, early warning systems, large-scale portable networks, international data exchange and management of massive data sets.
• Comprehensive seismogram analysis at single stations, seismic networks and arrays - requirements, potentials and future developments.
• Rapid and routine determination of earthquake parameters, particularly in the context of natural disasters as well as the verification and detection associated with the Comprehensive Nuclear-Test-Ban Treaty (CTBT).
• The role of international data centers and in this context, the use of regional network data to understand and improve international cataloging of earthquakes.
• Advances in wave propagation in heterogeneous media, including synthetic seismograms and waveform modeling in realistic Earth structures, theory and observations of scattering, attenuation and anisotropy.
• Developments in seismological interpretation, including development of inversion techniques, seismic tomography and whole-Earth analysis methods.

Officers

• Chair: Dmitry Storchak (UK)

• Secretary: Peter Bormann (Germany)

General Reports

• Minutes of the Meeting of the IASPEI Commission on Seismic Observation and Interpretation (CoSOI) 2009 (PDF, 63 KB)
  
• Commission on Seismological Observation and Interpretation Provisional Brief Report (July 2007 – December 2008) (PDF, 17 KB)
• Reports from working groups for the period March 2004 to March 2005 (PDF, 111 KB)
• Reports from working groups for the period September 2003 to March 2004 (PDF, 64 KB)
• Minutes and Progress Reports IUGG 2003 (PDF format, 500 KB)
• Progress Report (March 2002)
• Training Course at Hanoi IASPEI Meeting, August 2001 (in PDF format Warning! 5 MBytes!)
• Commission Meeting at Hanoi, August 23, 2001
• Mid-Year 2000 Report

Working and Task Groups

• Task Group on Seismic Scattering and Heterogeneity

• Working Group on Reference Events for Improved Locations

• Working Group on Magnitude Measurements

• Working Group on New Manual of Seismological Observatory Practice

• Working Group on Triggered and Induced Seismicity (TAIS)

• Working Group on Seismological Archives

• Working Group on Historical Seismicity

• Working Group on Networks and Stations Codes

• Working Group on Definition of Authoritative Locations
  

Task Group on Seismic Scattering and Heterogeneity

• Chair: Michael Korn (Germany)
• Former Chair: Haruo Sato (Japan)

Reports

Meeting Summary of the IASPEI Task Group on Scattering and Heterogeneity 2009 (PDF, 27 KB)
Progress Report 2009 (PDF, 25 KB)
Report of the meeting of the Task Group on Seismic Scattering and Heterogeneity at the 2007 IUGG General Assembly in Perugia, Italy (PDF, 90 KB)
Progress Report of Task Group on Seismic Scattering and Heterogeneity - 2005-2007 (PDF, 136 KB)
Report of Task Group on Seismic Scattering and Heterogeneity - June 2006 (PDF, 112 KB)
Report of the meeting of the Task Group on Seismic Scattering and Heterogeneity at the 2005 IASPEI General Assembly, Chile (PDF, 96 KB)
Task Group on Seismic Scattering and Heterogeneity Meeting Report, 2003 IUGG (PDF, 24 KB)

Working Group on Reference Events for Improved Locations
This working group has fulfilled its purpose and is now closed

• Co-Chair: E.R. Engdahl (USA)
• Co-Chair: Paul Richards (USA)

Reports

Progress Report 2009 (PDF, 25 KB)
Progress Report 2007 (PDF, 117 KB)

Resolution 2 of the 2009 IASPEI Resolutions (PDF, 85 KB)

IASPEI Reference Event List

Working Group on Magnitude Measurements

• Co-Chair: James Dewey (USA)
• Co-Chair: Peter Bormann (Germany)

Reports

Progress Report 2009 (PDF, 22 KB)
Progress Report 2007 (PDF, 23 KB)
Progress Report 2007 Presentation (PDF, 27 KB)
Summary of Magnitude Working Group Recommendations on Standard Procedures for Determining Earthquake Magnitudes from Digital Data (PDF, 120 KB)

Working Group on New Manual of Seismological Observatory Practice

• Chair: Peter Bormann (Germany)

Reports

Progress Report 2009 (PDF, 21 KB)
Annex 1 (PDF, 22 KB)
Annex 2 (PDF, 58 KB)
Annex 3 (PDF, 58 KB)
Table 1 (PDF, 34 KB)
Table 2 (PDF, 56 KB)
NMSOP_Manual_Seismological_Observatory_Practice (PDF, 20 KB)

Working Group on Triggered and Induced Seismicity (TAIS)

• Chair: Stanislaw Lasocki (Poland)

Website

http://www.tais.agh.edu.pl

Reports

Progress Report 2009 (PDF, 20 KB)

Working Group on Seismological Archives
This working group is closed

• Chair Roger Musson (UK)

Reports

Progress Report 2007 (PDF, 14 KB)
Working Group on Seismological Archives Meeting Report July 4, 2003 (PDF, 185 KB)

Working Group on Historical Seismicity

• Co-Chairs: Paola Albini (Italy) and Katsuhiko Ishibashi (Japan)

Reports

Progress Report 2009 (PDF, 20 KB)
Progress Report 2007 (PDF, 27 KB)
Historical_Seismicity Presentation, Perugia 2007 (PDF, 1019 KB)

Working Group on Networks and Stations Codes
This working group has fulfilled its purpose and is now closed

• Chair: Ray Buland (U.S.A.)
• Former Chair: Avi Shapira (Israel)

Reports

Seismic Station Codes – New Coding Standards DRAFT (PDF, 56 KB) (Final document to be available soon)
Progress Report 2009 (PDF, 13 KB)
Progress Report 2007 (PDF, 28 KB)

Resolution 3 of the 2009 IASPEI Resolutions (PDF, 84 KB)

Working Group on Definition of Authoritative Locations

• Chair: Remy Bossu (France)

Reports

Progress Report 2009 (PDF, 605 KB)

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Last modified: January 11, 2010
Maintained by: Alice Walker abw@bgs.ac.uk at the British Geological Survey