A blackout on the island of Hokkaido occurred following a massive earthquake on September 6, 2018. This study analyzed the sleep pattern data of junior high school students on the night of the blackout in comparison to a normal night. Data were collected from 52 junior high school students from a school away from the earthquake’s epicenter but within the blackout area. Although the students normally slept less than 8 h per night, they slept for nine and a half hours during the blackout night. The duration during the blackout corresponded to the ideal sleep duration recommended by the NSF and AASM.

中文翻译：

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2018 年北海道东部伊武里地震后的大规模停电如何影响青少年的睡眠模式

2018 年 9 月 6 日发生大地震后，北海道岛上发生停电。 本研究分析了停电当晚与正常夜晚相比的初中学生的睡眠模式数据。数据来自一所远离地震震中但在停电区域内的学校的 52 名初中学生。虽然学生们通常每晚睡不到 8 小时，但他们在停电之夜睡了 9 个半小时。停电期间的持续时间对应于 NSF 和 AASM 推荐的理想睡眠持续时间。