STATUS of the International Data Center and International Monitoring System Network of the PTSFlorian HaslingerIMS Seismic Monitoring Section

Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty OrganizationProvisional Technical SecretariatVienna International CentreP.O. Box 1200A-1400 ViennaAUSTRIAFlorian.Haslinger@ctbto.org

IMS/SM June 2002

Status of the IDC Historic Background and Future

Group of Scientific ExpertsProgressive Transition from pIDC to CTBTO IDC in Seven Phases198519911995+April 97Oct 97June 98May 99Sept 01Jan 03??GSETT-1GSETT-2GSETT-3Phase:12345675a5bMonitoringSoftware Release:122.1 / 3ExperimentalIDCs inMoscow,Stockholm,WashingtonExperimentalIDCs inCanberra,Moscow,Stockholm,WashingtonPrototype IDCin ArlingtonDesign &PlanningEstablishFacilitiesGrowingnumber ofnational datacentresEstablishIDC inViennaInitialTesting ofVienna IDCPreparationfor FullScaleTesting ofVienna IDCFull ScaleTesting ofVienna IDCValidation &Acceptance ofVienna IDCCTBTO IDCOperationsReadiness

IMS/SM June 2002

IDC’s Main Achievements

The commissioning of the IDC is in phase 5a, Preparation for Full-Scale Testing of the IDC.

The IDC provides the States Signatories with access to IMS Data and IDC Products andServices since February 2000.

Established an integrated office and scientific computing network to support StatesSignatories and the entire PTS.

Procured the mass data storage and the authentication key management systems.

Received, installed, tested and validated Release 2 and 3 software, thus becoming capable ofcollecting and processing data from about 100 stations.

1999 saw the GCI grow from a concept to implementation. With the installation of the four,now five, VSAT hubs along with the terrestrial links to the IDC in Vienna, global satellitecoverage has been established.

IDC Training Programme continued and completed third set of NDC managerial andtechnical training course in 2001.

IMS/SM June 2002

NDC Software Models available for State Signatories

Option 3Mini IDC

Option 2NDC-in-a-Box

Option 1Browser

Display data and products Download data and products No analysis Cost/NDC: US$3-8K Staff/NDC: 1

Option 1+ Limited detection and location Could add national data Cost/NDC: US$ 8-26K Staff/NDC: 2-3

Option 2+ IDC-like data acquisition and

forwarding IDC-like processing and analysis IDC-like data management system Cost/NDC: US$ 500-10,000K Staff/NDC: 10-1000

IMS/SM June 2002

21 February 2000 - 31 August 2001

Requests for Technical Assistance - 797

Continuous Data Forwarding: 37 stations

Products by Subscription - 265,129

IDC Secure Web Sessions - 11,007

Satisfied AutoDRM Requests - 93,799

85 IDC Tours/ ~ 1,000 visitors

Services to States Signatories

IDC

SERVICES

NDC-in-a-box (GEOTOOL)

software distributed to 40 States Signatories

~1 terabyte of data and products

requested and exported

53 States Signatories participating

A total of 392 Authorized Users

IMS/SM June 2002

IDC Calibration Programme

ObjectivesImprove S/H/I locations

Reduce bias and uncertainties

90% ellipses < 1000 km2

ApproachCalibrated T-Ts starting with Pn, Pg, Sn, Lg

Source-Specific and Slowness-Azimuth Station Corrections

Use Ground Truth events, coupled with hybrid empirical and 3-D model based approach

Global effort guided by international group of experts (1999, 2000, 2001 meetings in Oslo)

IDC Programme, Phase 1: Started in 2000; 8 contracts for Europe, Asia and Australia

IMS/SM June 2002

Initial Coverage for Calibration Programme Phase 1

RED: IDC Programme BLUE: PIDC provided corrections

IMS/SM June 2002

North America - Development of SSSCs for the IDC

(Ryaboy, Baumgardt, Bobrov, Dainty, 2001)

Events Relocation with SSSCs based on a 3-D model

- Only IMS stations used

- GT0 / GT2 events

- Calibrated regional phases

- Uncalibrated teleseismic phases

* Median mislocation 4 - 7 km

* Median error ellipse < 1000 km2

* 85 - 100% epicenters within ellipses

IMS/SM June 2002

CertifiedSite survey Installed

IMS Status of Work: Primary Seismic Network

IMS/SM June 2002

Installed CertifiedSite survey

IMS Status of Work: Hydroacoustic Network

IMS/SM June 2002

CertifiedSite survey Installed

IMS Status of Work: Infrasound Network

IMS/SM June 2002

CertifiedSite survey Installed

IMS Status of Work: Radionuclide Network

IMS/SM June 2002

Installed CertifiedSite survey

IMS Status of Work: Auxiliary Seismic Network

IMS/SM June 2002

IMS Standard Station Interface

IMS/SM June 2002

Installed at the following stations (as of June, 2002)

- PS21 Tehran, Iran (certified)

- AS026, Vranov, Czech Republic- AS036, Anogia, Greece- AS050, Valguarnera, Italy- AS069, Rata Peaks, New Zealand- AS071, Urewera, New Zealand- AS081, Muntele Rosu, Romania- AS109 Yreka, California, U.S.- AS119, Lusaka, Zambia

expected to be installed at more than 45 IMS seismic stations

IMS Standard Station Interface

IMS/SM June 2002

IMS Standard Station Interface

Installations

AS119 LSZ

AS109 YBH

IMS/SM June 2002

IMS Standard Station Interface

IMS/SM June 2002

Availability of IMS data to the Scientific Community

• phase arrival data was provided to the ISC

• no new developments on opening access to IMS data

Shared use of the GCI

• testing of various technical options under way

• no final decision yet