Wednesday, April 27, 2016

Japanese Earthquakes and 24-hour Battery Backup

In 2011, following the Great East Japan Earthquake, Japan's Ministry of Internal Affairs and Communications convened a study group composed of the major mobile providers and decided to fortify battery backup for 2,000 locations across the country. Battery backup time was increased to 24 hours for these locations, which are mainly city halls and prefecture headquarters.

The most recent large earthquake (magnitude 7.0) in Japan happened 1 kilometer west-southwest of Kumamoto City. The screenshot below is from Softbank Mobile's site. The Kumamoto City Hall and Prefecture office locations are highlighted in red.

(image: US Geological Survey)

Those locations are listed on each provider's site. Here is an example (in Japanese).

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