GITEWSGerman Involvement for a

Tsunami Early Warning System

Tide Gauges

Components of a Tsunami Early Warning System

(1) Real-Time Earthquake MonitoringSeismology: Location and magnitude in a few minutesDeformationmeasurements by GPS

(2) Real-Time Sea-Level MonitoringGPS-Buoys with ocean-bottom pressure sensorGPS equipped Tide Gauges

(3) Tsunami Simulation

(4) Installation of National/Regional Data- and Early-Warning Centers

(5) Capacity Building

Concept for a Tsunami Early Warning System

+ strong motion+ GPS sensors

+ seismic

+ strong motion+ GPS sensors

Preliminary GEOFON/BMG Station Gunungsitoli (Nias)

Tsunami-BuoyGPS-Antenna

Windgenerator

Communication

Meteorological Instruments

Acustic Modem

Ocean Bottom- Seismometer

Pressure Sensor

Ocean-Bottom-Unit

Tsunami Buoy-OBU System

Solar Panels

German Contribution

• Around 20 CGPS@TG

• Radar Gauge + 2 others (pressure / float)

• Additionally High Rate GPS, VSAT, Strong Motion

• „Joint Declaration“ with Indonesia

• Request by IOC for 5 additional TGs

• Currently, focus to Indonesia (10 tide gauges)

GPS ReceiverComputer

INTERNET/PhonePower Supply

Notes: Sporadic leveling between ARP and Pressure Sensor 1 (MSL) Power supply either 230V with Backup-solar-power or solar power only

Radar Gauge

Pressure Sensor 1

Pressure Sensor 2

GPS

MSL

Radar Gauge

Pressure Gauge

Pressure Gauge

GPS

GPS ReceiverComputer

INTERNET/PhonePower Supply

Notes: Regular (once per year) 1st order leveling Power supply either 230V with Backup-solar-power or solar power only

MSL

> 500 m

PC104Linux

Sat-Comm

DataLoggerRS232

HF/WLAN

Solar

Pressure 1

Pressure 2

Radar 1

(optional)

~~~~

Seismo

Design for Tide Gauge Stationswithin the Tsunami Warning System

Solar

MeteoGPS

GSM

BAKOSURTANALProposal for new tide gauges

Up to 10 GPS-equipped tide gauges

Installation September 2006

GITEWS: cGPS@TG Sadeng, JavaGITEWS: cGPS@TG Sadeng, Java

Tidal house building:Tidal house building:• Radar Gauge• Pressure Gauge and Floating Tide Gauge• GPS• Pole staff• To be added: GTS, VSAT

Float and Pressure Gauge

Solar Power Array

GITEWS: cGPS@TG Telukdalam, NiasGITEWS: cGPS@TG Telukdalam, Nias

Tidal house building:Tidal house building:• Radar Gauge• 2 Pressure Gauges• Pole staff• To be added: GTS

GPS marker

Leveling markers

Pole staff

GITEWS: cGPS@TG Telukdalam, NiasGITEWS: cGPS@TG Telukdalam, Nias

GPS building:GPS building:• Computer• GPS Receiver• Communication

equipment (PASTI)• To be added VSAT

GPS antenna

Leveling marker(one out of threeat land)