英文摘要 |
The present work is focused to investigate the relation of geochemical precursors to earthquakes through a network soil-gas radon stations in the multiple-plate collision setting of Taiwan. Geochemical variations of soil-gas composition are recorded at established geochemical observatories along the Hsincheng fault(HC) in Hsinchu area, Hsinhua fault(HH) in Tainan and at Jaosi in Ilan areas of Taiwan, respectively, to determine the influence of enhanced concentrations of soil gases on the tectonic activity in the region and to test the proposed tectonic setting based model from data generated at earthquake monitoring stations during the observation period. In addition to the continuous monitoring, in an effort to reduce the noise level which may be due to meteorological parameters especially for the rainfall, statistical filters have been applied to a selected data segment for both HC and HH monitoring stations. An attempt has been made to derive noise free synthetic curve on the data segment of the HC monitoring station. |