The Rand Europe research institute says its findings add rare clues about the Chinese government's "stability maintenance" policies in the highly controlled Tibet Autonomous Region (TAR), which it describes as an "information black hole".
It says: "Using overhead satellite imagery analysis and night-time lighting data, this study sought to add another piece to the puzzle in the hope of helping and encouraging other workers to complete the picture."
The Rand study examined 79 detention facilities across Tibet, finding patterns of growth in night-time lighting were concentrated in the 14 higher-security facilities.
It found increases across prisons and high-security detention facilities over the past two years. Growth in lower security facilities appeared to peak in 2017.
The light is seen from space and measured over monthly averages, and researchers said it could indicate new construction -as previous studies had found in Xinjiang - or the expansion of existing buildings, which was more likely in the Tibetan facilities. The study said growth in emitted light could also indicate increased occupancy or usage of facilities, without physical expansion.
この記事は The Guardian の July 28, 2023 版に掲載されています。
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この記事は The Guardian の July 28, 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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