In April 2004 Kinemetrics successfully completed an open-architecture Aspen system for the Malaysian Meteorological Service (MMS). This new digital National Seismic Network and Seismic Information System (NSN/SIS) monitors seismic weak- and strong-motion activities in western and eastern Malaysia. MMS is a department under the Ministry of Science, Technology and Innovations. It provides weather information and forecasts to support Malaysia’s national needs. Besides offering basic weather reports, it also provides the public with warnings on heavy rainfall and floods, smoke haze, lightning risks, and earthquake information.
The Malaysian NSN/SIS provides remote real-time monitoring of local/regional seismic activities around Malaysia, particularly the Benioff zone of Sumatra as well as the Sabah region in eastern Malaysia. The network consists of 12 Aspen field stations with customer provided VSAT telemetry for 11 sites and 128kbps digital lease-line communication from the satellite gateway and the remaining 12 th station to the Aspen processing and recording center in Kuala Lumpur for further dissemination.
Each Aspen field station consists of a Quanterra Q330 digitizer and Baler-14 connected to Kinemetrics EpiSensor and Streckeisen STS-2 broadband sensor or (3) Kinemetrics SS-1short-period sensors for three and nine stations, respectively. All sites are solar powered.
The data is received at the Aspen processing and recording center in Kuala Lumpur on two DSU/CSU units connected to a Cisco router. The router provides connectivity to the MMS LAN and the private seismic Intranet; the latter through a Cisco switch. The Aspen system runs BRTT’s Antelope 4.6 data acquisition and processing software on (2) SUN Blade 150 workstations for real-time processing and post processing. The Antelope Real-Time System (ARTS) is also providing automatic event detection, arrival picking, event location and magnitude calculation. It provides graphical display and reporting within near-real-time after a local or regional event occurred.
The Antelope Seismic Information System (ASIS) is used to process and manage the data using the real-time database schema, rt1.0 based on the Center for Seismic Studies’ CSS. 3.0 schema. ARTS presents comprehensive SOH information in a graphic user interface. Together with the integration of Quanterra’s Willard program (Q330 configuration program running on an IBM PC) in the open-architecture Aspen system MMS has complete remote control-and-command to the Q330.
Kinemetrics’ open-architecture Aspen system solution for MMS includes Antelope ORB-servers on a PC with Linux O/S that is installed in the DMZ of the MMS LAN with a public IP-address. This securely permits the system to obtain data from GSN stations via the LISS server and on the other hand provide data and information of the Malaysian NSN/SIS to MMS and possibly third party users by tunneling them through a firewall. Also, all computers run NTP clients connecting to a Symmetricom NTS-150 network timeserver as peer in order to obtain precise time for their system clocks.