1. The Australian National Seismic Network (ANSN)
Ms Yue Li
Geophysical Network Section (GN)
Geoscience Australia (GA)

2. The Australian National Seismic Network (ANSN)
Operate and maintain Australian Comprehensive nuclear-test-ban treaty organization (CTBT) seismo-acoustic stations
Operate and maintain ANSN & Joint Urban Monitoring Program (JUMP) networks
Monitor data quality to ensure that it is fit for purpose

3. Key Performance Indicators
Allow the detection, estimation of the location (position, depth) and magnitude of all earthquakes of magnitude 3.5 or greater anywhere in Australia within 24 hours of an earthquake
Allow the detection of 99.9% of earthquakes of magnitude 6.5 or greater anywhere in the region of the Indian Ocean, southwest Pacific, and Indonesia within 10 minutes of the earthquake happening
Any issues with data distributed to external organizations (CTBTO, IRIS, other seismological organizations) are responded to by GN staff within 2 business days
Make Australian seismic data regularly available to other overseas tsunami warning and seismological agencies (e.g. United States, India, Germany, Indonesia, Malaysia, Japan, New Zealand, and Thailand)

4. The Australian National Seismic Network Map

5. Current seismic network
GA supports 80 stations consisting of:
ANSN -62 stations
IRIS/USGS stations – MBWA, CTAO, NWAO, CASY
IRIS/IDA stations – COCO
Geoscope stations – CAN
CTBT stations – ASAR, STKA, FITZ, CTA, NWAO, MAW
Several non-seismic stations with infrasound, geomagnetic, hydroacoustic and GPS equipment
Australia stations operated by others eg TAU, WRA, networks in SA, QLD and commercial operators

6. Inside of the station

7. ANSN Broadband and Seismic Stations in Australia and the Region
Before the 2004 Tsunami GA had around 30 Broadband seismic stations in its network in varying states of serviceability.
By 2011 there are over 80 sites maintained by GA with most having modern equipment
Between ~ 60 seismic stations have been built or had major upgrades.
In 2010/11 the IU and II stations had equipment upgrades completed.
Installed a 13 element broadband seismic array (PSAR) in NW WA for seismic monitoring for Tsunamigenic earthquakes in the Indonesian region. Currently on test bed.
Seven Broadband seismic stations still require equipment upgrades to be completed.
Four new seismic stations are being built in regional SA.

8. System Architecture – Tier 1 Communications: Internet, VSAT on dual stream capacity to GA and Bureau of Meteorology
Broadband seismic stations - including those constructed as a component of the Australian Government's program to create the Australian Tsunami Warning System (ATWS), IRIS GSN and CTBTO stations
Q330HR digitisers,
STS-2 and KS54000 broadband 3 component 40 sps
PA23 accelerometers
High sample rate data (200sps) storage for ~30 days

9. System Architecture – Tier 2 Communications: VSAT to GA, internet, NextG, DDS, Spread spectrum radio
ANSN broadband and short period stations
Q330HR, GDAS, CMG-3ESP, CMG-40T @ 20 and 40 sps
CMG-5 accelerometers
High sample rate data (200sps) storage for ~3 days

10. System Architecture – Tier 3 Communications: NextG, ADSL
JUMP (Joint Urban Monitoring Program) stations. 33 located throughout Australia under the general design criteria of being near to large population centres with one hard rock and one soft rock site to measure strong ground motion. Each site consists of a 6 channel 24 bit digitiser with a seismometer and accelerometer and NextG or ADSL comms with single vertical channel seismic data streamed to GA's data collection network.
Ref Tek Model , LE3D sps real time (z-chan)
Ref Tek Model 131A-02/3 accelerometers
200 sps 6 ch High sample rate data storage for ~30 days

11. System Architecture – Tier 4 & 5 Communications: GSM dial up,Local dowload
Aftershock, long term temporary deployments eg. 5 stations deployed in the Sydney Basin.
12 aftershock kits at GA facilities in Canberra and Perth
Tier 5
Other end of life stations
non-JUMP seismometer stations located in NSW

12. ANSN Data Collection System

13. Data Services Seedlink server 192.104.43.82 port 18000
IRIS DMC datafeed
CTBTO IDC datafeed of IMS stations
DatalessSEED to IRIS and other client groups
Orb2orb to USGS, IRIS, Malaysia

14. ANSN Operation and Monitoring System
Project staff monitor station State of Health (SOH) and data.
A number of tools are used to perform the monitoring such as; Antelope applications (Orbmonrtd, Dlmon), Nagios, PQLX, RRD and GA developed tools.

15. The End Thanks for your attention.
Please feel free to ask any questions

16. Link to slideshow