GITEWS German Involvement for a Tsunami Early Warning

GITEWS German Involvement for a Tsunami Early Warning System Tide Gauges

Components of a Tsunami Early Warning System (1) Real-Time Earthquake Monitoring Seismology: Location and magnitude in a few minutes Deformationmeasurements by GPS (2) Real-Time Sea-Level Monitoring GPS-Buoys with ocean-bottom pressure sensor GPS 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 Buoy-OBU System Tsunami-Buoy GPS-Antenna Communication Windgenerator Meteorological Instruments Solar Panels Acustic Modem Ocean Bottom. Seismometer Pressure Sensor Ocean-Bottom-Unit

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 Radar Gauge GPS Receiver Computer INTERNET/Phone Power Supply MSL Pressure Sensor 1 Notes: Pressure Sensor 2 Sporadic leveling between ARP and Pressure Sensor 1 (MSL) Power supply either 230 V with Backup-solar-power or solar power only

GPS Radar Gauge GPS Receiver Computer INTERNET/Phone Power Supply > 500 m MSL Pressure Gauge Notes: Regular (once per year) 1 st order leveling Power supply either 230 V with Backup-solar-power or solar power only

Design for Tide Gauge Stations within the Tsunami Warning System GPS Meteo Seismo ~~~~ PC 104 Linux Sat-Comm Solar (optional) HF/WLAN RS 232 Solar Pressure 1 Data Logger Pressure 2 Radar 1 GSM

BAKOSURTANAL Proposal for new tide gauges Up to 10 GPS-equipped tide gauges

Installation September 2006

GITEWS: c. GPS@TG Sadeng, Java 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: c. GPS@TG Telukdalam, Nias GPS marker Tidal house building: • Radar Gauge • 2 Pressure Gauges • Pole staff • To be added: GTS Leveling markers Pole staff

GITEWS: c. GPS@TG Telukdalam, Nias GPS antenna Leveling marker (one out of three at land) GPS building: • Computer • GPS Receiver • Communication equipment (PASTI) • To be added VSAT