No. 21 Announcement of Nankai Trough megathrust earthquake and damage estimates

(public information Inagi July 15, 2013 issue publication)

　On May 28, 2013, a working group of the Cabinet Office's Central Disaster Prevention Council released the final report on countermeasures for a magnitude 9 class Nankai Trough mega-earthquake.
Estimated damage at the national level is 323,000 dead or missing, 9.5 million people evacuated at peak time, 2,386,000 buildings completely destroyed and burned down (approximately 20 times the amount of the Great East Japan Earthquake), and total damage estimated at 2. Including secondary damage, the figure is a staggering 220.3 trillion yen (approximately 13 times the amount of the Great East Japan Earthquake).
This report presents challenges and specific countermeasures based on the premise that the damage is widespread and severe, government support is limited, and earthquake prediction is difficult.
The main points are:
(1) Evacuation centers should incorporate a triage concept that prioritizes the elderly and others.
(2) As the damage spreads over a very wide area, local governments with less damage will be asked to provide support to other affected areas;
(3) It is necessary to improve countermeasure methods through training, etc.
(4) In order to reduce damage, it is important to consider advance disaster prevention measures such as tsunami countermeasures and earthquake-proofing of buildings.
(5) Each person should have at least one week's worth of food stockpiled.
The contents call for further strengthening of self-help systems.
As for the city's response this year, regarding (3), all fire brigade divisions have been equipped with portable concrete breaking tools.
During the general education training held in June 2013, we used engine cutters and chainsaws, which we had deployed so far, to provide more practical training for rescuing people from fallen trees and accident vehicles.
Regarding (4), we are expanding seismic diagnosis of wooden houses and making buildings more earthquake resistant.
Regarding point (5), I would like all citizens to ask themselves. Household supplies for one week include 21 liters of drinking water (3 liters per adult per day), a cassette stove and 14 cylinders, emergency food such as canned goods and crackers, a battery-powered charger for a mobile phone, and dry batteries. , radio, etc.
Furthermore, the Tokyo Metropolitan Government announced similar damage estimates on May 14, 2013, ahead of the national government. The maximum seismic intensity, liquefaction risk, tsunami height, etc. in the 23 wards and Tama area are lower than the damage estimates for an earthquake directly hitting the Tokyo metropolitan area announced on April 18 last year, and the measures taken so far have not been implemented. Promoting this approach will also help us prepare for the Nankai Trough mega-earthquake.
The city will continue to work on disaster prevention measures, so we ask that everyone do what they can to prepare at home.