来る大震災に備えて

Future Earthquakes in Tokyo and the Nankai Trough, and the Potential for International Energy Supply

Considering the anticipated major earthquakes in Tokyo and the Nankai Trough, here is an analysis incorporating the potential for energy supply through South Korea from Russia and China.

Earthquake Impacts on Tokyo and the Nankai Trough

Anticipated Causes

The anticipated major earthquake in Tokyo, known as the capital’s direct-hit earthquake, is expected to be triggered by multiple faults beneath the Kanto region. Particularly, an earthquake with its epicenter in northern Tokyo Bay is highly concerning.

Impact and Preparedness

Tokyo, with its dense population and infrastructure, faces significant risks from strong tremors. Potential consequences include building collapses, fires, transportation disruptions, and the halting of utilities like water and electricity.

To mitigate these risks, Tokyo and national authorities are promoting earthquake-resistant construction, formulating evacuation plans, and conducting emergency response drills. On an individual level, preparing emergency supplies and confirming family evacuation routes are crucial.

The Nankai Trough Megaquake

Anticipated Causes

The Nankai Trough Megaquake is expected to originate from the Nankai Trough, which extends along the Pacific coast from the Kii Peninsula to Kyushu. This area is prone to periodic massive earthquakes due to the subduction of tectonic plates.

Impact and Preparedness

If a megaquake occurs, it would likely trigger not only strong seismic activity but also massive tsunamis, causing extensive damage to coastal areas. The tsunamis could reach far inland, necessitating swift evacuation.

The government and local authorities are enhancing earthquake prediction research and improving tsunami warning systems. Regional disaster plans are in place, involving the designation of evacuation shelters and regular evacuation drills. Individuals should also be aware of tsunami evacuation buildings and act quickly in the event of a tsunami.

Addressing Energy and Infrastructure Shortages

Energy and Infrastructure Shortages

Major earthquakes in Tokyo or the Nankai Trough would likely cause extensive damage to power supply facilities and infrastructure, leading to widespread power outages that would severely impact medical facilities, communication, transportation, and daily life.

Current Measures

Domestically, Japan is advancing earthquake-resistant measures and strengthening emergency power supply systems. However, considering the potential for extensive damage, international cooperation for energy supply should also be considered.

International Energy Supply via South Korea from Russia and China

International Energy Collaboration

To secure energy supply during a disaster, one viable strategy is to obtain electricity from Russia and China via South Korea. This complex project would involve several key elements:

  1. Infrastructure Development:
  • Installation of undersea cables connecting Japan and South Korea
  • Construction of a power network linking South Korea with Russia and China
  • Technical adjustments to ensure compatibility between the power grids of each country
  1. International Agreements and Security:
  • Concluding energy supply agreements among Japan, South Korea, Russia, and China
  • Establishing protocols for priority supply during emergencies
  • Strengthening cybersecurity and physical protection of the infrastructure
  1. Economic Costs and Benefits:
  • Costs associated with laying undersea cables and developing infrastructure
  • Long-term economic benefits from stabilized energy supply
  • Societal stability ensured by rapid power supply during emergencies

Feasibility and Challenges

Feasibility

Technologically, the installation of undersea cables and construction of an international power network is feasible. Europe already has similar international power supply networks, demonstrating the potential for such a system in Japan.

Challenges

  • Political Challenges: Political tensions and historical issues among the countries may complicate the agreement process.
  • Technical Challenges: Ensuring technical compatibility between the different power grids will require careful coordination.
  • Economic Challenges: Significant infrastructure investment will be necessary, requiring a thorough cost-benefit analysis.

Conclusion

To address power shortages resulting from major earthquakes in Tokyo or the Nankai Trough, it is crucial to enhance domestic measures and also explore international energy supply options via South Korea from Russia and China. Overcoming technical, economic, and political challenges will be essential, but this strategy could provide a robust solution for stable energy supply and swift response during disasters.