An
International Workshop
|
|
[ DRAFT Workshop Proceedings ] |
By Igor Chernobay
Section Chief
International Data Centre Division
Preparatory Commission for the CBTBO
www.ctbto.org
This presentation describes the mission and functions of the International Data Centre (IDC) that is being operated by the Provisional Technical Secretariat (PTS) of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban-Treaty (CTBT) Organization. The IDC is collecting and processing data from the International Monitoring System (IMS) consisting of primary and auxiliary seismic, as well as hydroacoustic, infrasound and radionuclide stations. IRIS is operating about 30% of auxiliary seismic stations that were used in preparation of IDC products as at June 2005.
The primary purpose of the CTBT verification regime is to verify compliance with the Treaty. In addition, IMS data and IDC products have the potential to offer a range of civil and scientific applications which could contribute to sustainable development and human welfare. These applications demonstrate, in part, how State Signatories could gain additional benefits from participation in the Treaty verification regime. The Preparatory Commission, which is responsible for the policy of IMS data and IDC products distribution, is currently considering whether data and products could be also provided to disaster alert organizations.
The presentation provides an overview of the IDC operations: from data acquisition, through automatic and interactive data processing, to provision of access for authorized users to raw IMS data and IDC products and services. High technical requirements for raw continuous data availability (>98% over the calendar year) and timeliness (> 97% of the data shall reach the IDC within 5 minutes) provide a very good starting point for automatic station and network data processing. Data from IRIS stations, together with data from other auxiliary stations, are used to improve location of seismic events and magnitude calculations. Results of automatic and interactive data processing are available to National Data Centres by four access methods. Currently more than 700 authorized users from almost 90 countries have access to IMS data and IDC products.