The Taiwan Telemetered Seismographic Network

Details The Taiwan Telemetered Seismographic Network The Taiwan Telemetered Seismographic Network

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pepi...58....9w&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 58, Issue 1, p. 9-18.

Physics

8

Scientific paper

In 1972, the Taiwan Telemetered Seismographic Network (TTSN) was installed to monitor earthquakes occurring in an area from 21 to 26°N latitude and from 119 to 123°E longitude. The number of stations increased from six in 1972 to 24 in 1987. The stations are equipped with velocity-type seismometers with a natural frequency of 1 Hz. Since 1983, horizontal-component sensors have been added at several stations. Signals recorded by the field stations are transmitted to Taipei Recording Center through telephone lines or radio, and then recorded on FM magnetic tapes, paper, and nine-track magnetic tapes through A/D converters. Hypocenters of earthquakes are routinely determined by a HYPOC2 computer program. The size of an earthquake is estimated from the signal duration. Moreover, a simulated Wood-Anderson seismographic station is in operation at Taipei for the determination of local magnitude.
A seismic work system (SWS) is being established for automatic data acquisition and data processing. To avoid clipping of signal amplitude, an Optimum Telemetry System is being linked to the TTSN.

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