1. Tsunami Warning System of SCS
Zhao Lianda
National Marine Environmental Forecasting Center (NMEFC), SOA

2. 1、Tsunami warning framework
State Council
PTWC
Earthquake
CEA
Emergency
departments
Tsunami warning
system
Local governments
Tide gauges
Water-level
Tsunami buoys
Medias

3. 2、Monitoring
2.1 tide gauge stations
2.2 tsunami buoys in SCS

4. 2.1、 Tidal Gauge Stations, SOA
State Oceanic Administration of China (SOA) has established a tide gauge stations network to monitor sea level change. The monitoring net work was composed coastal tide gauges and island tide gauges.

5. December 26, 2006年,occurred in the south of Taiwan Island
ChongWu tide gauge station recorded 7.8 cm tsunami wave after 3.4 hours of earthquake（right-up map） ; DongShan tide gauge station recorded 10 cm tsunami wave after 3.2 hours of earthquake （right-middle map）;HongKong Observary recorded 10 cm tsunami wave （right-below map） 。
Sunday, April 23, 2017 5

6. Two tsunami buoys will be purchased and deployed in SCS.
2.2 Tsunami monitor buoys
Two tsunami buoys will be purchased and deployed in SCS.
We will get real-time data from tsunami buoys in the latter half of the next year.
the locations of two tsunami buoys 6

7. 3 Quantitative Tsunami Forecast System
Parameters input
Epicenter determination
(H1,h1)‏
(H,h)‏
10 minutes
Database
Numerical modeling
Results

8. Thank you

9. Hypothesis tsunami earthquake epicenters
235 epicenters are determined in 10-32N ， E, covering the Ryukyu and Manila Trench

10. For each epicenter, 30 (5*6) tsunami cases:
Magnitude (Mw): 6.5, 7.0, 7.5, 8.0, 8.5
Focal depth (km): 0, 20, 40, 60, 80,100
Mass computing, all about 7050（235*30 ） tsunami events case. The results are loaded into database.
The database will expand in future
Some computing files 10 10

11. Tsunami forecast system based on database and GIS11

12. Tsunami forecast results display.
Different color divide coastline. Each frame gives tsunami wave height and arrival time. Different color of frames represents different impact.