GEOFON and its Role in Global Seismic Monitoring and Tsunami Warning

Winfried Hanka, GeoForschungsZentrum (GFZ), Potsdam, Germany, hanka@gfz-potsdam.de

GEOFON

● is focused on networking and capacity building● is known for simple, but efficient and innovative technical solutions● acts as a support center and integration and coordination point for many

networks and data centers● operates its own permanent cooperative network (global with

densification in Europe and in future in SE Asia)● acquires real-time and other data from many partner networks and other

public data sources● operates automatic rapid global and regional earthquake information

services● deploys temporary networks● operates the largest data archive in Europe as primary or secondary

archive for many partner networks and several mobile instrument pools● is the largest node in ORFEUS's future European Integrated Data Archive

(EIDA) structure● plays a major role in the setup of the Indian Ocean Tsunami Warning

System (IOTWS)

Overview

GEOFON operates and supports

● the GEOFON cooperative permanent VBB network (50 + 1 stations)● 23 GEOFON partner networks on national level

Germany (GR, BO, BV, SX)Austria (OE)Finland (FN)Estonia (EE)LatviaDenmark/Greenland (DK)Poland (PL)Czech Republic (2 x CZ)Slowakia (SK)

Hungary (HU)Romania (RO)Greece (HL)Turkey (KO)Israel (IS)Spain (RU)Portugal (2 x)Nicaragua (NI)Indonesia (IA)

● other major collaborating networks (near real-time data collectionsupport [SeedLink])

MedNet (MN)GEOSCOPE (G)

● in future networks within the Indian Ocean area (Australia, South Africa,Sri Lanka, India (?), ...)

● capacity building also for other networks (ORFEUS/MEREDIAN, BalkanStability Pact, ASEAN community, Central America) and through itsSeisComP Users Group to many more

“Networks”

The permanent GEOFON Network, its partner networks and other data sources(GEVN - GEOFON Extended Virtual Network: > 200 stations)

“Networks”

The GEOFON Concept of Networked Seismographs and Data Centers

“Products”

GEOFON and the Indian Ocean Tsunami Warning System Germany has made a commitment to setup a tsunami warning system for Indonesia as part of the IOC/IOTWS (GITEWS)

GEOFON became responsible for the seismic component of GITEWS

It will ● deploy up to 40 “smart” land stations (VBB, SM, partly GPS), 22 in

Indonesia● contribute to up to 20 coastal stations (tide gauges, GPS, SM)● supports the deployment of 2+? OBS stations (supplementing the DART

buoys)

Strategic partner networks for setting up the Indonesian BB SeismicNetwork (~60 stations)● BMG (Indonesia)● NIED, JAMSTEC (Japan)● CEA (China)● CTBTO

“Networks”

Planned GEOFON Real-Time Network in Indonesia

“Networks”

Planned International Real-Time Seismic Network in Indonesia

“Networks”

GEOFON and the Indian Ocean Tsunami Warning SystemCooperation within IOTWS outside of Indonesia● with Australia (joint stations in NW Australia and on Indian Ocean

islands)● with South Africa (support upgrade of SA network, open it for teleseismic

monitoring of Indian Ocean)● talks with India, Sri Lanka and Iran started● offer to UNESCO IOC/ICG to fill identified gaps in IOTWS seismic network● participation in capacity building and coordination (SEED, SeedLink

proposed as data format and RT data exchange protocol)

“Networks”

Proposed Station Distribution for an Earthquake Monitoring Network for the Indian Ocean Region (Locations to be discussed)

“Networks”

“Networks”

GITEWS “Smart” Landstation Design

Communication Concept Tsunami Early Warning System

oceanographic data

real-timedata stream

Real-timeSensordata

seismic data

Tsunami scenarios

warning

Concept Tsunami Early Warning Centre

satellite data

future real-time satellite data

other geodata sources (public

authorities, departments)

processing

geospatial data- topography- bathymetry- land cover- infrastructure- scenarios

risk modelling, vulnerability assessment,

evacuation planning

local situation centre

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processing

local warning centre

decision support system

real-timedata stream

no warning

evaluation/recommendation

Tsunami scenarios Tsunami scenarios

post Tsunami modelling

processing

The GFZ Seismological Data Archive is● the largest seismological data archive in Europe● the primary archive and dissemination point for the

● permanent GEOFON VBB network (51 stations)● passive seismological experiments of the GFZ Geophysical

Instrument Pool (GIPP) and other pools in Germany and Europe(~45 experiments)

● the secondary (backup) archive and dissemination point for the GEOFONpartner networks

It● imports NRT data from 24 networks over Internet (GEVN)● exports NRT data from 18 partner networks over Internet (through its

public SeedLink server)● has online data holdings of ~12 TB (mirrored), backups volumes and raw

data in tape archive● provides capacity building for NRT and archive data distribution

(SeedLink, ArcLink)● in Europe: ORFEUS (MEREDIAN, EIDA [NERIES])● worldwide: IRIS/DMC, Central America and ASEAN communities,

possibly IOC/IOTWS and AfricaArray

“Data”

GEOFON's role in seismic monitoring

GEOFON operates a rapid earthquake information service which is

● based on the GEOFON Extended Virtual Network (GEVN, > 200 stations)● one of the fastest sources for earthquake information on the Internet● fully automatic, no manual post processing● operating a Global Seismic Monitor as well as regional ones (e.g. for

EuroMed area and South East Asia)● issuing alert emails, short messages for pager and SMS, finger lists and

RSS feeds and web pages (seismic monitors and bulletins)● providing earthquake information to > 300 users in

➔ governmental agencies➔ disaster management➔ seismic services➔ the scientific community➔ news media➔ private homes

● operating or supporting SeisComP based monitoring systems inIndonesia (GITEWS), Germany (GRSN), Greece, Slovakia, Nicaragua,South Africa

“Products”

“Products”

GEOFON/GEVN (Near) Standard Real-Time Network Data Processing Products

Global Seismic MonitorAutomatic Bulletin

“Live” SeismogramsEmail& SMS alerts

“Products”

GEOFON/GEVN Regional Seismic Monitors

“Products”

Comparison of automatic GEOFON/GEVN locations versus NEIC (QED)(new AutoLoc version, June 21 – August 11, 2005)

“Products”

Preliminary GITEWS Real-Time Earthquake Monitoring

A preliminary GITEWS Earthquake Information System is operational at BMG since June 2005

Present Virtual Real-Time Seismic Network at BMG – external data imported over Internet

Preliminary GITEWS Real-Time Earthquake Monitoring

Products of the preliminary Indonesian Earthquake Information System

Preliminary GITEWS Real-Time Earthquake Monitoring

Preliminary GITEWS Real-Time Earthquake Monitoring

Comparison of present automatic BMG/GEOFON locations with NEIC(QED)

Advanced (Near) Real-Time Earthquake Monitoring Products

Direct Seismic Tsunami Observations

Rupture Tracking

Reliable Rapid Magnitude Estimation

Real-Time Moment Tensors (GRID-MT)

Kawakatsu (1998)

Krüger et al (2005)

Yuan et al (2005))

What can GEOFON contribute to GEOSS?● Its permanent network as part of the FDSN network● the GFZ Seismological Archive as a major dissemination point for

seismological data● its global and regional seismic monitoring systems● its contribution to the Indian Ocean Tsunami Warning System● its capacity building capability● It can act as coordination point for the GEOFON partner networks to

contribute as well

How can GEOFON benefit from GEOSS?● ???

Conclusions