An Analysis of Web Coverage on the 2018 West Japan Heavy Rain Disaster
Shosuke Sato and Fumihiko Imamura
International Research Institute of Disaster Science (IRIDeS), Tohoku University
468-1 Aoba Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan
This study analyzed quantitative big data from web news on the West Japan Heavy Rain disaster for a two-month period. The retrieved information was compared with previous natural disaster coverage. The results indicated the following. 1) For natural disasters that had occurred over the past 15 years, the “half-life period for media exposure” (i.e., the period in which the amount of news reporting halves) was approximately one week, while the half-life period of web media exposure on the West Japan Heavy Rain disaster was 24 days. Thus, the West Japan Heavy Rain disaster appeared to be the most significant social concern since the Great East Japan Earthquake. 2) The West Japan Heavy Rain disaster was large enough to affect both the Chugoku and Shikoku Districts, but the available human support was comparable to the extent of the human and material damages as well as the related amount of media coverage. No significant regional differences in the amount of media coverage or support were found.
-  S. Sato, H. Hayashi, K. Inoue, and T. Nishino, “Visualizing Choronological Behavior of Disaster Social Aspect Based on Web News Articles on Disasters and Crises – Support of Creating Common Operational Picture for National/Local Government Officers and Reseachers Related to Disaster Management through the Web Publication of Keyword Extraction Results using TRENDREADER –,” J. of the Visualization Society, Vol.29, No.7, pp. 17-26, 2009.
-  S. Sato, F. Imamura, and H. Hayashi, “Basic Analysis of the Web News Corpus Broadcasted the 2011 Great East Japan Earthquake Disaster,” J. of Social Safety Science, No.15, pp. 303-311, 2011.
-  S. Sato, H. Hayashi, N. Maki, and M. Inoguchi, “The Development of an Algorithm Using the TFIDF/TF Index to Extract Automatically the Set of Keywords of Corpus about Fields Related to Emergency Management: A Case Study Utilizing Web News Articles for the 2004 Niigata-Ken-Chuetsu Earthquake Disaster,” J. of Social Safety Science, No.8, pp. 367-376, 2006.
-  S. Sato, F. Imamura, and M. Iwasaki, “An Analysis of Web Coverage on the 2016 Kumamoto Earthquake Disaster,” J. Disaster Res., Vol.13, No.2, pp. 321-325, 2018.
-  S. Sato, F. Imamura, and H. Hayashi, “Analyzing the 2011 Great East Japan Earthquake disaster based on Web News,” Analyzing the 2011 Great East Japan Earthquake disaster 2 – Disaster Human, Society and Record –, Akashi Shoten, Part 3, Chapter 7, pp. 235-248, 2013.
-  S. Sato, F. Imamura, and H. Hayashi, “An Analysis of Amount of Human Resource Support from Outside of the Affected Areas and its Associated Factors in the 2011 Great East Japan Earthquake Disaster,” J. of Social Safety Science , No.19, pp. 93-103, 2013.
-  Furusato Choice’s Disaster Recovery Assistance, https://www.furusato-tax.jp/saigai/ [accessed October 30, 2018]
-  The Hiroshima City Council of Social Welfare, “Closing of Higashihiroshima City Sufferer Life Support Center,” https://higashihiroshimashi-syakyo.jp/detail_saigai.php?id=429&mode=1 [accessed October 30, 2018]
-  Kumano Town Council of Social Welfare, “Announcement from Kumano Town Disaster Relief Volunteer Center,” http://park11.wakwak.com/kumano-shakyo/oshirase/index.html [accessed October 30, 2018]
-  Hiroshima Disaster Relief Volunteer Center, “Information of Hiroshima Disaster Relief Volunteer,” https://www.facebook.com/hiroshima.vc/ [accessed October 30, 2018]
-  The Sanyo Shimbun, “Soja City government accepts disaster relief volunteers – a thousand people in 14–16th, July –,” Press news: July 13, 2018, http://www.sanyonews.jp/article/750343/1/ [accessed October 30, 2018]
-  The Sankei Shimbun, “West Japan Heavy Rain: Disparity of disaster relief volunteers,” Press news: July 13, 2018, https://www.sankei.com/west/news/180713/wst1807130118-n2.html [accessed October 30, 2018]
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