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Page 1 - Timelines of data
processing and analysis

The time elapsing from the occurrence of an event to its detection and analysis is crucial when seeking clarity on a suspicious event. The Treaty does not define timelines for the analysis process and the resulting bulletins. These details are included in the relevant documentation on the functioning of the IDC and relate to timelines applicable after the Treaty’s entry into force.

The time elapsing from the occurrence of an event to its
detection and analysis is crucial when seeking clarity on a
suspicious event.
After entry into force of the Treaty, the interactive review of events will take two days.

As explained above, the results of the automatic processing of waveform data, i.e. seismic, hydroacoustic and infrasound data, are listed in successive event lists, the Standard Event Lists (SEL). The envisaged time lines for these event lists to be produced after an event occurred are about one hour for SEL1, four hours for SEL2 and six hours for SEL3.

The interactive review of events listed in SEL3 will be completed within the following two days and resulting events will be listed in the Reviewed Event Bulletin (REB). The automatic process to screen out natural events listed in the REB will take little more than one hour and the results will be published in the Standard Screened Event Bulletin (SSEB).

Following entry into force of the CTBT, all relevant information
on a suspicious event will be available to Member States two
days after an event occurred.

Thus, two days after a suspicious event, Member States will have at their disposal comprehensive information consisting of processing and analysis results based on data from the IMS waveform networks.

 
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