Journal of Disaster Information Studies
Online ISSN : 2433-7382
Print ISSN : 1348-3609
Volume 17, Issue 2
Displaying 1-25 of 25 articles from this issue
  • Isao NAKAMURA
    2019Volume 17Issue 2 Pages 97-108
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    This paper examines the effect of risk communication for evacuation in a case of flood induced by heavy rainfall in northern Kyushu district in July 2017. After reviewing the articles on flood in mountainous areas, we analyze a survey for 59 inhabitants and some interviews with 22 inhabitants and city hall officials to see the evacuation behavior and the risk communication in this disaster.

    The data indicate that there are difficulties to evacuate from flood because the complex of flood and landslide impeded the evacuation. The evacuation rate was low and the main trigger of evacuation was the witness of flood.

    Although the evacuation advisory might encourage the evacuation because evacuation rate of the citizen who heard evacuation advisory was higher than who did not heard it, the local government could not inform it to the citizen effectively. The emission of evacuation advisory through ETWS system of mobile phone was failed, because the internet network was temporarily interrupted by a thunderbolt. Moreover, the local community radio system through which the evacuation advisory can be heard in the people's houses did not work enough because the linkage between this system and other existing system had a problem.

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  • Akimi KAZIYA, Kazuhide AKAISHI, Takashi YOKOTA, Naoya SEKIYA, Fujio KU ...
    2019Volume 17Issue 2 Pages 109-119
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    In Oshima town, the evacuation rate decreased markedly after Sediment disaster in Izu Oshima Island on October 16, 2013.

    Therefore, as a way to encourage evacuation, the town carried out group work to exchange opinions on problems relating to sediment disaster risks and evacuation behaviors and how to cope with them, and the evacuation rate improved. In addition, efforts are made to properly operate evacuation advisory and evacuation directives. The Town operates to reduce the miss of the evacuation advisory by using “sediment disaster warning information” and “observed rainfall”. Based on cases of sediment-related disasters over the past 61 years, the index value of precipitation concerning the risk of debris flow occurrence was obtained and used as a reference for evacuation directives.

    In these investigations and operations, the joint examination system in which the Oshima town office, the Oshima branch office, the Oshima police station, and the Izu Oshima volcanic disaster prevention liaison office work together plays an important role.

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  • Yosuke OKITA, Naoto TADA, Shinya GOTO, Yasuhito JIBIKI
    2019Volume 17Issue 2 Pages 121-131
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    In recent years, many countries and organizations provide disaster assistance across state borders. Affected countries have to request assistance in case they need it, and they also have to declare that they do not need it in case they can manage the disaster by themselves.

    This paper analyses receiving international disaster assistance and information sharing from the affected country, taking examples from the earthquakes (2016 Aceh, and 2018 Lombok and Sulawesi) that hit Indonesia in recent years.

    On the reasons why the Indonesian government could release the information immediately after the disasters, this paper points out that the role of each agency in disaster management was clear, the government had the clear reception policy, and the system to release information in English was already established.

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  • Kensuke Takenouchi
    2019Volume 17Issue 2 Pages 133-143
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    One year has passed after Northern Kyushu heavy rainfall happened in July in 2017 in Japan. In damaged areas, restorations and recoveries from the disaster have been taken little by little and various changes of community disaster responses are found. What changes does disaster occurrence lead into community disaster responses? This study surveyed the changes and the influencing items through interviews to the residents in some communities related to this disaster event with a focus on the changes of disaster prevention activities and disaster responses in the communities.

    As results of the interviews, various activities were begun to improve their disaster responses in some communities. On the other hand, we found more dependency on evacuation information from local governments and difficulty of community disaster responses by decrease of residents. Based on results of analyses on main stakeholder, community or individual evacuation and influencing factors, how to judge evacuation by communities in disasters had changed with influence of various factors in communities or outdoors.

    This study revealed the influence into community disaster responses by disaster occurrence and the analyses are important to consider temporary treatments for community disaster prevention and community culture for disaster prevention in future from long-term view.

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  • Mariko YANAI
    2019Volume 17Issue 2 Pages 145-155
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    This study aims to elucidate the discourse structure of Fukushima Daiichi Nuclear Power Plant Disaster coverage for woman's weekly magazine. It analyzes how the woman's weekly magazine evaluated and represents the report of other media, and also the formation of the discourse of nuclear accident reporting. This research connects with Yanai (2017) who conducted a discourse analysis of general weekly magazines (3 magazines) and aims to produce further knowledge through comparison between a general weekly magazine and a woman's weekly magazine. The analysis targets are three magazines: "JYOSEI-SEVEN," "JYOSEI-JISHIN," and "SYUKAN-JYOSEI" issued in March 2011. The analysis method based on Critical Discourse Analysis of Fairclough (2012): (1) analysis of "assumptions type" (2) "social actors," and in Hayashi(2002): (3) discourse sharing intention of writer and reader. As a result of the research, it became clear that in the women's weekly magazine, nuclear disaster was depicted as affecting the daily life of the reader. In addition to the discourse that changes will occur around the reader, discourses promoting change in behavior and consciousness such as power saving and fundraising to the reader were told in the form of requests and advice. Using the pronoun "we" that the reader and the writer were united, "reporters" converted into characters in the article, omitted subjects in the article, shared consciousness. It concludes that these three points are stronger than general weekly magazines, allowing for fostering fellow consciousness of readers and writers and consciousness of solidarity, allowing advice to readers.

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  • Kazunari Mizuno
    2019Volume 17Issue 2 Pages 157-167
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    With the spread of smartphones, the use of smartphones may be useful in disaster prevention and disaster reduction. Among them, I thought disaster prevention apps would be particularly effective in times of disaster, so I sorted out the effectiveness of disaster prevention apps. Furthermore, we considered how many disaster prevention apps are installed and what characteristics are seen by the people who install them as an important theme, and conducted a survey and analysis this time. As a result of the analysis, the relation with the variable related to "ICT" which was considered as the initial hypothesis was low, and "awareness of disaster prevention" obtained the result with the highest relation. The next highest relationship was "Age" When we focused on the ages and analyzed them again by age group, we found characteristic results for each age group. Looking at these results, we examine how smart phones (disaster prevention app) can contribute to disaster prevention and mitigation in the future.

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  • Ryota SATO, Hiroaki SANO, Hinako SUZUKI, Masaki IKEDA, Takuya TAKAHASH ...
    2019Volume 17Issue 2 Pages 169-177
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    A devastating earthquake hit large area of Kyushu region, especially in Kumamoto prefecture. Its foreshock and main shock had occurred in April 14th at 9:26 p.m. (Mw 6.5) and in April 16th at 1:25 a.m. (Mw 7.3), respectively. NIED officiated as one of the main organizations connecting earthquake disaster managers and the disaster-stricken areas by offering the required information after integrating various disaster information into GIS data. Within this support, shelters and evacuees data were the most requested map information for many of the disaster recovery organizations. The data format of shelters and evacuees data offered from several organizations were varied, thus it often required otiose time to grab the content of information. To solve this problem, NIED integrated all sorts of shelters'data offered from various organizations (e.g. Kumamoto prefecture and city, Emergency Medical Information System, National land numerical information) and offered them as the map information. The aims of this paper are to marshal the processes and the situations of data integration for shelters and refugees and their usage, and to discuss the better ways for the arrangements of shelters and refugees' data not only for the disaster response but also as the information for daily use.

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  • Tomotaka WADA, Koki MATSUMOTO, Kazuhiro OHTSUKI
    2019Volume 17Issue 2 Pages 179-190
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    An Emergency Rescue Evacuation Support System (ERESS) has been developed to detect a sudden disaster outbreak and give real time evacuation information of the disaster to evacuees. In this paper, we propose an evacuation guidance method with consideration for passage congestion by using iBeacon area and acceleration information. We judge the current states of ERESS terminal holders and recognize the passage congestion by gathering all terminal's states in an area. Then we understand the congestion of each area with sharing other area's congestion of terminals. Since we can change the evacuation route dynamically according to the passage congestion, we can give appropriate evacuation guidance to evacuees. We investigate the effectiveness of the proposed method by several evacuation guidance experiments.

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  • Masamitsu ONISHI, Kensuke TAKENOUCHI, Motohiro HONMA, Masanobu KANAI
    2019Volume 17Issue 2 Pages 191-200
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    This paper conducts a normative analysis on the role of the public sector and the private sector in the service process of weather information. For that purpose, firstly, the service process of weather information including its production to consumption is structurally formulated from the aspect of economics and sociology. Based on the formulated structure, the service process of weather information in Japan is classified into patterns. In addition, the normative role of the public and the private sector is discussed from the aspect of ‘which sector should provide intermediate output in the service process'. The main conclusions of this paper are 1) the information provided by the public, i.e. the JMA (Japan Meteorological Agency) in Japan, cannot help being commoditized. Therefore, the severe weather terminology is the most likely to be low-context and difficult to trigger decision-making. 2) High-context information of severe weather terminology can be provided by the private sector on the market basis. In addition, it is argued that the prerequisites for marketization are 1) the ability of communication of information provider as an expert and 2) potential information users' awareness of their exposure to disaster risk and of the value of establishing trust relationship with information provider as an expert in the normal time.

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  • Saneyuki UDAGAWA
    2019Volume 17Issue 2 Pages 201-211
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    Social welfare facilities in dangerous areas were obliged to prepare evacuation securing plans by revising the law. Purpose of this paper is clarifying the reason why such facilities cannot prepare effective evacuation securing plans and helpful support. We did a questionnaire survey to clarify the obstacles and the support required. In addition, we conducted a questionnaire to clarify the requirements for the effectiveness of the plan. We concluded that it is extremely important to secure evacuation places where we can maintain the health of our users

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  • Naruko TAKANASHI, Koichi SAKAMOTO
    2019Volume 17Issue 2 Pages 213-225
    Published: 2019
    Released on J-STAGE: April 01, 2021
    JOURNAL FREE ACCESS

    Disaster by rain storm brings us a certain lead time by nature in contrast to disaster by earthquake which happens without no sign. Local government can utilize this lead time to execute planned responses. But there are many cases that local government could not utilize lead time to respond speedily and appropiately. The background of this failure is considered the gap between information handling capabilities of local government and expanding information handling burden such as 1)collecting informatin on weather, water level and so, 2)deciding evacuation advice/order, 3)providing informations of weather warning and evacuation advice/order for residents and offices, 4)responding to phone-call rush from residents, offices, media and disaster prevention organizations.

    In this paper forcus is put on processes of deciding and providing evacuation advice/order. By analysing actual cases of local government responses to recent rain storm disaster, factors of success or failure to utilize lead time are made clear, and improvement measures are discussed.

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