Site response of Fujian seismic monitoring stations based on Nakamura H/V spectral ratio method

Based on the Nakamura H/V spectral ratio (NHVR) method， the site response of 85 seismic monitoring stations in Fujian region were analyzed by using microtremors noise data recorded by the stations of Fujian teleseismic network in this paper. Then, we divided the stations into four groups according to the shape of site response curves, and briefly analyzed the factors resulting in different site response results. As a result of good site situation of platform, most of the stations of Fujian teleseismic network has a flat site response curve without obvious frequency amplification point. In addition, the site response obtained by NHVR method in this paper is basically consistent with that of 37 seismic stations calculated by Moya method, except for a few of stations. With reference to the periods during the magnitude calculation, we obtained the magnitude correction value of each seismic station of Fujian network, and compared them with those by statistical method. The results indicate that the two kinds of specific magnitude correction values have a certain correlation, but due to different factors considered during the analysis, there are also some differences.