Which Media Worked in the 2018 Hokkaido Blackout?

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  • 北海道ブラックアウト どのメディアが機能したのか
  • 北海道ブラックアウト どのメディアが機能したのか : 「北海道胆振東部地震」メディア利用動向インターネット調査から
  • ホッカイドウ ブラックアウト ドノ メディア ガ キノウ シタ ノ カ : 「 ホッカイドウ イブリ トウブ ジシン 」 メディア リヨウ ドウコウ インターネット チョウサ カラ
  • 「北海道胆振東部地震」メディア利用動向インターネット調査から
  • From the Internet Survey on Media Use at the Hokkaido Eastern Iburi Earthquake

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Abstract

The 2018 Hokkaido Eastern Iburi Earthquake that occurred on November 9th last year halted the power supply across Hokkaido, and a maximum of approx.2.95 million households suffered from power outage. The quake disrupted television viewing in the area as well as telephone and internet connections. In order to study the residents’ media usage on the day of the quake, NHK conducted an internet survey of residents throughout Hokkaido. The findings of the survey include the following. - Among devises or terminals the residents managed to use on the day of the quake, “radio” was most cited while 68% could not use “television.” As to online communication, 40% responded that the internet was accessible from right after the earthquake trough early morning (around 6 a.m.), but the figure dropped to the 20 percent range after that time. - The most used media for acquiring earthquake-related information was “NHK radio” from right after the earthquake trough early morning (around 6 a.m.), but the figure gradually dropped from morning to midnight. Meanwhile, “word of mouth from family members or friends” increased. - Regarding why many people turned to radio, responses such as “information on radio is trustworthy” and “I thought I could get information I needed from radio” show their appreciation for radio content, but at the same time, a notable number of people responded “there was no other way” and “I wanted to save electricity or battery power.” - Residents used different sorts of media—radio, portal sites, apps, social media, etc.—depending on the types of information they wanted. - To prepare for future large-scale disasters, it will be necessary to secure media functions at the time of disaster and strengthen information delivery capacity that can meet the information needs of disaster-affected individuals.

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