TECHNICAL EXPERT MEETING ON AUTOMATIC AFTERSHOCK PROCESSING ALGORITHMS

TECHNICAL EXPERT MEETING ON AUTOMATIC AFTERSHOCK PROCESSING ALGORITHMS

 

Note: As this workshop was postponed from 5-6 March 2020 to 26-28 May 2020, participation is limited to those who already registered for the March event.

 


LOCATION
Vienna International Centre, Austria 

DATES
26-28 May 2020

LANGUAGE
The working language will be English

ADMINISTRATIVE POINT OF CONTACT
Capacity Building and Training Section (IDC/CBT)
CTBTO Preparatory Commission 
P.O.Box 1200
1400 Vienna, Austria
Tel.:+43 1 26030 6132
Fax:+43 1 26030 5973
Email: conferences_and_workshopsping@ctbtopong.org


TECHNICAL POINT OF CONTACT

Christos Saragiotis
Seismic-Acoustic Officer, IDC/SA
CTBTO Preparatory Commission 
P.O.Box 1200
1400 Vienna, Austria
Tel.:+43 1 26030 6187
Email: christos.saragiotisping@ctbtopong.org

 

OBJECTIVES
The PTS is exploring ways to improve the performance of the IDC’s automatic processing pipeline, an important aspect of which is the timely and high-quality automatic processing of aftershock sequences and other recurring events. For this reason the PTS launched a project with the objective to evaluate three algorithms that will help address this issue, namely the Empirical Matched Field algorithm by NORSAR, the SeisCorr algorithm by Sandia National Labs and the XSEL algorithm by the IDC.

The objective of this technical expert meeting is threefold:

  • For the developers of these algorithms to present their tools and methods and how they addressed specific aftershock sequences and recurrent events;
  • For the IDC to present the experimental pipeline it developed in order to integrate these algorithms and generate automatic seismic event lists;
  • For all participants to discuss the performance of the methods, compare them with one another, note each of the pros and cons of the method and compile a common summary agreed upon by the three stakeholders.

Meeting participants are welcome to contribute to the technical meeting by giving a 15 minute presentation(s) related to the topics above.


AGENDA
 

  • Introduction to the comparison and evaluation criteria;
  • Presentation of aftershock sequence processing using the three algorithms (two cross-correlation and the empirical matched field techniques);
  • Presentation of other recurrent events processing using the three algorithms;
  • Presentation of aftershock processing and/or recurrent events using other methods by the NDC experts, if any;
  • Presentation of the IDC experimental pipeline; and
  • Presentation of the results of evaluating the three algorithms.
    Discussion and outcome.

 

PARTICIPANT PROFILE 

Members from the three algorithm inventors (NORSAR, Sandia National Labs, IDC) as well as representatives from NDCs and research establishments who have relevant expertise in applying or developing methods that address aftershock or recurring event processing.