The Engineering Geological Database for Strong Motion Stations in Taiwan

The Engineering Geological Database for Strong Motion Stations in Taiwan

More than 650 seismic stations all over Taiwan have been installed by the Central Weather Bureau(CWB) to record the ground motion data. In order to obtain the geological conditions and soil profiles of these strong motion stations, a site investigation project was established by the National Center for Research on Earthquake Engineering(NCREE) and CWB in 2000. The site investigation mainly consists of three parts: the basic description of a site, the on-site boring, and the suspension P-S Logger technique which is used to determine the P and S wave velocities of the stratum at various depths. The suspension P-S Logger technique, using a single down-hole probe with one source and two receivers, allows continuous measurements of wave velocities with high resolution. There are 40 seismic stations, which had been investigated in 2004. With reference to Kyoshin Net in Japan and ROSRINE in USA, a preliminary engineering geological database for 226 seismic stations investigated during 2000~2003 has been constructed on NCREE's website for convenient accession.