Ground Level Gaps Generated by the 1948 Fukui Earthquake and Its Previous Events, Recognized on Topographical Maps

The Fukui Earthquake fault was investigated by seismic methods such as timeterm analysis, spectral amplitude, and phase velocity of Love waves in the frequency-space domain, and the CDP analysis in reflection seismology. Amplitude and phase velocity of Love waves were used as a powerful tool for investigating the lateral variation of subsurface structure. Active use of these methods revealed that the fault area has small level gaps of only 2.4 m in the alluvium from which the recurrence time of the Fukui Earthquake in the Recent epoch was estimated to be less than 2,000 years. It is further inferred that the Tajima River was probably trapped by the faulting topography.

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Ground Level Gaps Generated by the 1948 Fukui Earthquake and Its Previous Events, Recognized on Topographical Maps

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Re-examination of seismicity associated with destructive inland earthquakes of Japan and its seismological significance.

Re-examination of seismicity associated with destructive inland earthquakes of Japan and its seismological significance.

Seismic explorations of the buried fault associated with The 1948 Fukui Earthquake.

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