An Analysis of Web Coverage on the 2016 Kumamoto Earthquake Disaster
Shosuke Sato*,†, Fumihiko Imamura*, and Masahiro Iwasaki**
*International Research Institute of Disaster Science, Tohoku University
Aoba 468-1, Aramaki, Aoba-ku, Sendai 980-0845, Japan
**Survey Research Center Co. Ltd., Tokyo, Japan
In this study, we analyzed big data consisting of news published on the web about the 2016 Kumamoto earthquake over the course of a month and compared it with earthquakes that have occurred in the past. Our findings are summarized as follows: 1) In the case of web news on the Kumamoto earthquake, the “media half-life” of the disaster, or the time it took for media coverage to decrease to half of its peak amount, was one week, which is roughly the same as that of the 2004 Niigata Chuetsu earthquake. 2) The scope of human support corresponded to the scope and coverage of human and material damage, and no municipalities deviated from this, which means that, remarkably, we did not see any disparities in news coverage or human support, as was the case with the Great East Japan Earthquake.
-  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 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.
-  Kumamoto Prefcture, “EOC Material on the 2016 Kumamoto Earthquake (reference: 2016.5.31),” https://www.pref.kumamoto.jp/kiji_15459.html