The existing and upgrading national seismological network in vietnam Le Tu Son Le Tu Son Institute of Geophysics, VAST Vietnam
Vietnam seismological network composes of 24 short-period stations (an telemetry array with 9 station and 15 autonomous stations). Vietnam seismological network composes of 24 short-period stations (an telemetry array with 9 station and 15 autonomous stations).
Transmission system
Recording System
Autonomous station
Telemetry station Telemetry station
Recording system at the center
The specifications of the seismological network Seismometer:Mark Product 1Hz LC-3D; Sensitivity:176/V/M/S Seismometer:Mark Product 1Hz LC-3D; Sensitivity:176/V/M/S Damping 0.7 Damping 0.7 Amplifier Gain64 (2^6) * Amplifier Gain64 (2^6) * Digitizer 15 bit for 10 Volt Digitizer 15 bit for 10 Volt mV/count mV/count Filter: Filter: Cutof freq.24 Hz Cutof freq.24 Hz Butt. Filter5 poles Butt. Filter5 poles High-pass0.1 Hz High-pass0.1 Hz -1 pole -1 pole
Data processing: SEISAN softerware An example of the seismic records from Vietnam seismological network (the event of M=5.3 in Dienbien city, 19/02/2001). All of the seismic records are digital An example of the seismic records from Vietnam seismological network (the event of M=5.3 in Dienbien city, 19/02/2001). All of the seismic records are digital
24 Taiwan portable broadband seismic array in northern Vietnam.
STS-2/Trillium 40 + Q330
Project Improvement of National Seismic Network for Earthquake informing and Tsunami warning Institute of Geophysics
Distribution of proposal seismic network The distance between stations from 100 km to 200 km. The distance between stations from 100 km to 200 km. 36 stations on the whole country 36 stations on the whole country Real time working Real time working
Seismic monitoring network
System configuration of each seismic station
AIME OF THE SEISMIC SYSTEM DETECT EQ AND LOCATE EQ MAG 3.5 THAT OCCURR IN THE WHOLE COUNTRYDETECT EQ AND LOCATE EQ MAG 3.5 THAT OCCURR IN THE WHOLE COUNTRY DETECT EQ AND LOCATE EQ MAG 6.5 THAT OCCURR IN THE SOUTH CHINA SEADETECT EQ AND LOCATE EQ MAG 6.5 THAT OCCURR IN THE SOUTH CHINA SEA REDUCE THE TIME OF DATA PROCESSINGREDUCE THE TIME OF DATA PROCESSING BMG
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