四國
地震風險：very-high
Ehime Prefecture 地震風險
Western Shikoku facing the Bungo Channel, close to the Nankai Trough. The Ikata Nuclear Power Plant is located on the Sada Peninsula — monitoring NRA and Ehime Prefecture official announcements is important in any Nankai Trough earthquake.
主要斷層・地震帶
Western Ehime faces the Bungo Channel (Bungo Suido) close to the Nankai Trough. The Ikata Nuclear Power Plant is on the Sada Peninsula — geographically isolated with limited evacuation routes — and faces both seismic and tsunami risk. The 2001 Keiyo earthquake (M6.4) originated from a Seto Inland Sea submarine fault.
主要斷層線
南海海槽 中央構造線 분고 수도 단층