Www.pol.ac.uk Tide Gauges Philip L. Woodworth Permanent Service for Mean Sea Level.
GITEWS German Involvement for a Tsunami Early Warning System Tide Gauges
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Transcript of GITEWS German Involvement for a Tsunami Early Warning System Tide Gauges
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GITEWSGerman Involvement for a
Tsunami Early Warning System
Tide Gauges
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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
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Concept for a Tsunami Early Warning System
+ strong motion+ GPS sensors
+ seismic
+ strong motion+ GPS sensors
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Preliminary GEOFON/BMG Station Gunungsitoli (Nias)
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Tsunami-BuoyGPS-Antenna
Windgenerator
Communication
Meteorological Instruments
Acustic Modem
Ocean Bottom- Seismometer
Pressure Sensor
Ocean-Bottom-Unit
Tsunami Buoy-OBU System
Solar Panels
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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)
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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
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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
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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
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BAKOSURTANALProposal for new tide gauges
Up to 10 GPS-equipped tide gauges
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Installation September 2006
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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
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Float and Pressure Gauge
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Solar Power Array
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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
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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)
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