NDC Capacity Building Workshop and Regional Seismic Travel Time (RSTT) in combination with Data Sharing and Integration Training for the Middle East and South Asia (MESA) region

  Muscat, Oman
  04 Sep 2022 - 08 Sep 2022

This is the re-announcing of the NDC Capacity Building Workshop and RSTT 2020 postponed due to Covid-19 restrictions. Applicants who had applied for this Workshop/RSTT 2020 are kindly asked to register again.


The objectives for the NDC Capacity Building Workshop are:

The additional objectives for the RSTT and Data Sharing and Integration Training are here.

Participants Profile:

Applicants should be involved in the use of IMS Data and Products, in particular NDC analysts, scientific staff from seismological observatories, and/or tsunami warning centres or researchers from academic institutions with seismological background and experience The Workshop aims at having a broad representation from the MESA region.

Technical requirements

It is highly recommended that the participants bring their own laptops, with at least 20 GB free hard disk space and 4 GB (preferably 8 GB) of RAM to enable the use of the Virtual Machine and other software that will be provided by the Commission to efficiently perform the activities related to the Workshop.

International Hydroacoustics Workshop 2022

  Vienna, VIC
  05 Sep 2022 - 07 Sep 2022


The objectives of the workshop are to support the CTBTO verification regime by creating a forum for scientific knowledge exchange on three main topics:

Participants Profile:

The workshop is aimed towards all scientists, engineers and other persons involved in hydroacoustics, ocean observatories, acoustic sensor technologies, cabled and autonomous underwater systems and related fields.

Please be informed that the Provisional Technical Secretariat solicits presentations and posters from participants on the topics of the Workshop.

NDC Workshop 2022

  Toledo, Spain
  03 Oct 2022 - 07 Oct 2022

This is the re-announcement of the “NDC Workshop 2020”  postponed due to Covid-19 restrictions.


The 2022 NDC Workshop is being organized by the Provisional Technical Secretariat (PTS) of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization in cooperation with the Government of the Kingdom of Spain.


The workshop will focus on the ability of National Data Centres (NDCs) to carry out their verification activities, including access to IMS data and IDC products and SHI and RN data sharing among NDCs. The objectives of the workshop are:


  1. Provide a forum for NDC experts to share their experience in fulfilling their verification responsibilities;
  2. Provide NDC feedback to the PTS on all aspects of the data, products, services and support NDCs in their work; under this objective, particular emphasis will be put on
    • NDC contributions to Performance Monitoring and Testing (through NPEs* and other means);
    • Discussions on NDC involvement in the IDC Progressive Commissioning Plan.
    • Discussion of recent and ongoing IDC projects.
  3. Review of NDC recommendations;
  4. The progress results of the NPE19 will be presented and discussed, including analysis of the NPE19 event using IMS Data and other data obtained by national means. The scenario of the next NPE will also be drafted at this workshop;
  5. Contributions on the interaction between NDCs and research and development-related topics will also be considered.


*NPE- NDC Preparedness Exercise

Virtual Expert meeting on Advances in Waveform Processing and Special Studies

  VIC, Austria
  17 Oct 2022 - 21 Oct 2022

The PTS is actively pursuing initiatives to improve the performance of the IDC waveform automatic processing pipeline. Some active research and development areas are :

  • Further development of an integrated waveform quality control module and its application in all stages of the automatic processing pipeline
  • Evaluating new methods that can improve the pipeline performance in processing aftershock sequences and recurring events.
  • Evaluating and integrating new detectors and associators into the IDC processing pipeline.
  • Tuning components of IDC pipeline processing in order to optimize their performance.
  • Advances in event screening.
  • Evaluating global seismic and/or hydro-acoustic three-dimensional travel time models and optimizing location capabilities.
  • The objective of this technical expert meeting is twofold:

  • Part of the meeting will be dedicated to exploring advances to waveform processing that may improve the IDC waveform pipeline processing, including tools and methodologies for testing and validation ;
  • Part of the meeting will be dedicated to discussing waveform Special Studies and Expert Technical Analysis – procedures, methods, use of data and content of UEB and SRMR.

    Meeting participants are welcome to contribute to the technical meeting by making a brief presentation related to one of the topics above.

    Virtual Expert Meeting on Special Studies and ETA with RN and ATM Methods

      Online, VIC
      17 Oct 2022 - 21 Oct 2022

    Special Studies provide in-depth, technical reviews by expert analysis of data from the International Monitoring System (IMS) to improve the estimated values for the standard signal and event parameters resulting in an Updated Radionuclide Report (URR).

    The purpose of the Expert Technical Analysis (ETA) of IMS data and other relevant data provided by the requesting State Party is to assist the State Party concerned to identify the source of specific events. The output is the State Requested Methods Report (SRMR).

    URR and SRMR need to be seen in the context of the standard products they are building on, specifically the Standard Screened Radionuclide Event Bulletin (SSREB). Beyond its current implementation it may contain among others the use of atmospheric transport modelling results to combine field of regard information from all radionuclide samples sharing a possible common source region related to a single event. If available, information derived from isotopic ratios is included and may be used to confine the field of regard. The National Screened Radionuclide Event Bulletin (NSREB) was introduced and needs to be developed.

    The objectives of this technical expert meeting are:

  • Review methods that may be suited for Special Studies and ETA;
  • Discuss the possible content of the SSREB, NSREB, URR and SRMR;
  • Explore the potential use of various non-IMS data for SRMR;
  • Advance common understanding of procedures and methods to be developed for the SSREB, URR, SRMR and NDC responsibilities.

    Meeting participants are welcome to contribute to the technical meeting by making a brief presentation related to one of the Agenda topics.

    NDC Capacity Building: Waveform Training Course using SeisComP

      Vienna, VIC
      24 Oct 2022 - 28 Oct 2022


    To strengthen the capacity of the States Signatories’ participation in the verification regime and to enhance their use of PTS data and products for civil and scientific applications using SeisComP.

    Participants Profile:

    • The training is only open to CTBT States Signatories, in particular those participating in the Capacity Building Program;
    • Technical staff/authorized users involved or to be involved in the use of IMS data and IDC products;
    • NDC staff are the main target group;
    • Experience in waveform data analysis; and
    • Experience with UNIX/Linux operating system and SQL would also be beneficial.

    Online NDC Training Course - Advanced Training Course on Radionuclide Noble Gas Data Analysis

      via videoconferencing, VIC
      14 Nov 2022 - 25 Nov 2022


    • Understanding the role of National Data Centres (NDC) in the verification regime;
    • Building and improving the NDC capabilities; and
    • Strengthening the analytical skills of NDCs technical staff on access and analysis of IMS radionuclide data.

    Participants Profile:

    • NDC technical staff/ authorized users (preferably Principal User or Regular User);
    • Participation in one of the previous Radionuclide Training Course on NDC Capacity Building is a requirement;
    • Experience in radionuclide data analysis and/or similar experience related to nuclear test ban verification; and
    • Passing the e-Learning course is a prerequisite and is considered in selection of participants.
    Note: E-Learning Training Course on NDC Capacity Building: Access and Application of IMS Data and IDC Products accessible via the CTBTO Knowledge and Training portal (https://ktp.ctbto.org). To register, please visit the e-Learning webpage (https://www.ctbto.org/ndc-e-course) and follow the instructions.

    7th Workshop on the Operation and Maintenance (O&M) of the IMS

      Vienna, Austria
      28 Nov 2022 - 02 Dec 2022


    The workshop will:

    • Facilitate interaction between Station Operators and the PTS.
    • Highlight major achievements in the Operation and Maintenance of IMS stations while focusing on the necessary steps to be taken to ensure their long-term sustainment.
    • Focus on the way forward to enhance IMS station data availability, quality and its authentication.
    • Update Station Operators on tools available for monitoring and assessing IMS network performance.
    • Experience and challenges of network Operation and Maintenance under unforeseen circumstances.

    Participants Profile:

    Station Operators, local operators, NDC staff, contractors and equipment suppliers involved in the operation and maintenance of the IMS.