PSI - Issue 77

Koji Uenishi et al. / Procedia Structural Integrity 77 (2026) 183–189 Uenishi / Structural Integrity Procedia 00 (2026) 000–000

188

6

a

Directions of rupture (fracture) propagation

6+

Epicenter

Otanimachi

6+

6+

Active fault segments

6+

6-

Fugeshimachi

6+

6-

7

Hashiride

6+

Kano 7

6-

6+

10 km

6+ Kakiyoshimachi

b

c

T , ρ

L

Fig. 3. (a) The 2024 Noto Peninsula, Japan, earthquake, with the seismic intensity of the Japan Meteorological Agency (JMA) (2025) and the locations of geological active fault segments informed by the National Institute of Advanced Industrial Science and Technology, Japan (2025) (extended after Uenishi (2025)). The JMA seismic intensity tends to be larger on the convex side of the curved fault system. (b) Fundamental and (c) second vibration mode of an overhead line (tension T , linear density or mass per length ρ ) supported by utility poles (spatial distance L ). 4. Conclusions By changing the associated Mach numbers, the wave fields induced by an energy source moving along straight and curved circular planes of weakness (interfaces) have been investigated analytically as well as numerically in the two