Document ID: chunk:federal_register_of_legislation:C2019C00013:clause:1_60:p1
Version: federal_register_of_legislation:C2019C00013
Segment Type: clause
Provision Reference: sch 1 cl 60 (pt 1/4)
Character Range: 258851–262032

60  United States                  Wake Island                 19.3 N      166.6 E
    of America

ANNEX 2 TO THE PROTOCOL

List of Characterisation Parameters for International Data Centre Standard Event Screening

1. The International Data Centre standard event screening criteria shall be based on the standard event characterisation parameters determined during the combined processing of data from all the monitoring technologies in the International Monitoring System.  Standard event screening shall make use of both global and supplementary screening criteria to take account of regional variations where applicable.
2. For events detected by the International Monitoring System seismic component, the following parameters, inter alia, may be used:
‑ location of the event;
‑ depth of the event;
‑ ratio of the magnitude of surface waves to body waves;
‑ signal frequency content;
‑ spectral ratios of phases;
‑ spectral scalloping;
‑ first motion of the P‑wave;
‑ focal mechanism;
‑ relative excitation of seismic phases;
‑ comparative measures to other events and groups of events; and
‑ regional discriminants where applicable.
3. For events detected by the International Monitoring System hydroacoustic component, the following parameters, inter alia, may be used:
    ‑ signal frequency content including corner frequency, wide‑band energy, and mean centre frequency and bandwidth;
‑ frequency‑dependent duration of signals;
‑ spectral ratio; and
‑ indications of bubble‑pulse signals and bubble‑pulse delay.
4. For events detected by the International Monitoring System infrasound component, the following parameters, inter alia, may be used:
‑ signal frequency content and dispersion;
‑ signal duration; and
‑ peak amplitude.
5. For events detected by the International Monitoring System radionuclide component, the following parameters, inter alia, may be used:
‑ concentration of background natural and man‑made radionuclides;
    ‑ concentration of specific fission and activation products outside normal observations; and
‑ ratios of one specific fission and activation product to another.

Endnotes

Endnote 1—About the endnotes
The endnotes provide information about this compilation and the compiled law.

The following endnotes are included in every compilation:

Endnote 1—About the endnotes
Endnote 2—Abbreviation key
Endnote 3—Legislation history
Endnote 4—Amendment history

Abbreviation key—Endnote 2
The abbreviation key sets out abbreviations that may be used in the endnotes.

Legislation history and amendment history—Endnotes 3 and 4
Amending laws are annotated in the legislation history and amendment history.

The legislation history in endnote 3 provides information about each law that has amended (or will amend) the compiled law. The information includes commencement details for amending laws and details of any application, saving or transitional provisions that are not included in this compilation.

The amendment history in endnote 4 provides information about amendments at the provision (generally section or equivalent) level. It also includes information about any provision of the compiled law that has been repealed in accordance