Identification of Far-Field Long-Period Ground Motions Using Phase Derivatives

Figure 4

The map shows that stations belonging to K-NET and KiK-net strong networks, Japan, are distributed across Osaka plain, Nobi plain, Kanto basin, and Yufutsu plain, respectively, wherein geological conditions are likely to generate long-period motions; in terms of site classifications referring to the National Earthquake Hazard Reduction Program (NEHRP) standards, the stations are marked with circles, stars, and triangles to represent C, D, and E site classifications, respectively; pentagons represent the epicenter of each event.