Sagami Trough
subduction — 250 km
The Sagami Trough lies south of Tokyo Bay where the Philippine Sea Plate subducts beneath the North American Plate. The 1923 Great Kanto Earthquake killed over 100,000 people and destroyed most of Tokyo and Yokohama. The same trough threatens the Tokyo metropolitan area today.
Type
subduction
Length
250 km
Countries
1
Cities at Risk
2
Risk Assessment
70% chance of M7+ in Kanto within 30 years
Last Major Earthquake
M7.9 — Kanto, Japan (1923-09-01)
Affected Countries
Cities Near This Fault
Data: USGS Earthquake Hazards Program