Skip to main content
Earth, Planets and Space
Figure 2 | Earth, Planets and Space

Figure 2

From: A study on the predominant period of long-period ground motions in the Kanto Basin, Japan

Figure 2

Examples of velocity seismograms and velocity spectra. (a) Velocity seismograms and velocity spectrum of horizontal ground motions recorded at SITH04 and TKY007 from the 2004 Mid-Niigata earthquake. The spectrum is calculated as the square root of the sum of the square of the NS and EW component spectral amplitudes. (b) Velocity seismograms and velocity spectrum of horizontal ground motions recorded at SITH04 and TKY015 from the 2008 Iwate-Miyagi earthquake.

Back to article page