Figure 3
From: Characteristics and impact of environmental shaking in the Taipei metropolitan area
PSD at different stations in Taipei city. (a–o) show the maps of PSD at stations CT01 to CT16. The hourly vertical seismogram from January to February of 2019 is processed for the plots. Grey and blue lines indicate the data from day (6 am to 6 pm) and night (6 pm to 6 am), respectively. The horizonal bar denotes three different frequency bands of > 2 Hz, 0.2–1 Hz, < 0.2 Hz. Black and white arrows indicate the largest amplitude in > 2 Hz and 0.2–1 Hz bands, respectively. Each curve represents hourly data during the two-month study period. Blue horizontal line denotes − 90 dB for a reference.
