iaspei 2009 the comprehensive nuclear-test-ban treaty development of the seismic networks of the...
TRANSCRIPT
The Comprehensive Nuclear-Test-Ban Treaty Development of the Seismic Networks of the International Monitoring System Lassina ZerboDirector, International Data Centre
Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty OrganisationProvisional Technical SecretariatVienna International CentreP.O. Box 1200A-1400 Vienna IASPEI Cape Town, South AfricaAUSTRIA 11 January 2009
IMS Seismic Networks
50 primary stations sending data to Vienna in real time, continuous mode
• 30 array stations• 19 3-C stations• 1 to be determined
120 auxiliary stations ready to respond to requests from IDC to help characterize the detected event
• 7 array stations• 112 3-C stations• 1 to be determined
New low seismic noise model
Processes
Site surveysSite preparationInstallationCertificationPost-certification Activities
International Monitoring System Division
The IMS equipment
(GCI Communication topologies)
IMS stationIDC ViennaNDC
IMS station IDC ViennaNDC
BASIC Topology
INDEPENDENT Topology
NDC fully controls data flow to IDC
IMS Seismic and Hydro Networks
98% of data availability
11 hydroacoustic stations• 6 hydrophone stations• 5 T-phase stations (essentially seismic sensors)
97% timely data availability
Calibrated stations
Standardized stations
CTBT on Funding ofOperation and MaintenanceArticle IV (Verification) of the Treaty:
19. For facilities … in Tables 1-A, 2-A, 3 and 4 of Annex 1 to the Protocol [ie Primary stations], … the Organization.. shall meet the costs of:(b) Operating and maintaining International Monitoring System facilities…(c) Transmitting International Monitoring System data
20. For auxiliary network seismic stations .. the Organization,.. shall meet the costs only of:(a) Transmitting data..;(b) Authenticating data …;(c) Upgrading stations to the required technical standard…;(d) If necessary, establishing new stations
AUTOMATION
SUPPORT
• MAINT
• LOGISTIC
•INFRASTRUTURE
• OFFICE
NDC
STATIONSTATIONSTATION
IDC
SOH
Mon
itorin
g
Trac
king
OPERATIONS ENGINEERING
International Monitoring System
ENGINEERING GROUP
INSTALLATION CERTIFICATION GROUP
GCI
OPERATION CENTER
MONITORING FACILITIESOPERATIONS
UNIT
NETWORK & SYSTEMOPERATIONS
UNIT
AUTOMATION &INFORMATION
Operational Concept
IMS Operational Requirements
Levels of OperationsEntry-into-Force (EIF)Provisional Operations Enhanced Operations (System-Wide Performance Test)
EIF annual availability requirementsPrimary waveform stations:
97% timely data availability98% overall data availability
Radionuclide stations:
95% data availabilityAuxiliary seismic stations:
90% data availability
Communication link availabilityspecification of contract 99.5%
Int. Cooperation Workshop, Abuja 15
29 November - 1 December 2006
98%
IMS Provisional Operations
•Verification System is in Provisional Operations
• Scope and period defined by Commission (CTBT/PC-19/1/Annex II P12-19):
- Provisional Operations does not provide for verification- Protect the investment; efficient and effective utilization- Allow build up, testing and evaluation- ‘Best Effort’ within available resources
e.g. normal working hours
- Provide for Performance Testing in cooperation with station operators and NDCs.
- The Provisional Operations Status is linked to the Current Status of the CTBT…….
16
29 November - 1 December 2006
Provisional Technical Secretariat Page 18
Map of all the events included in the IDC REBssince February 2000 around the Korean peninsula
9 Oct 2006 event
16 Apr 2002 event 9 Oct 2006
event (presumed explosion)
16 Apr 2002 event (presumed earthquake)
Provisional Technical Secretariat Page 19
Summary on IDC Secure WebsiteSummary on IDC Secure Website
Provisional Technical Secretariat Page 20
Seismic signals recorded in South Korea (KSRS) for 9 Oct 2006 event (left) and 16 Apr 2002 event (right)
9 October 2006 16 April 2002 (presumed earthquake)
More explosion-like More earthquake-like
- But in general, discrimination of (especially small) explosions from earthquakes
is a complex task.