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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
2022 Volume 36 Issue 1 Pages
4-20
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
2022 Volume 36 Issue 1 Pages
21-40
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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Norihiro NAKAI
2022 Volume 36 Issue 1 Pages
41-46
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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As global warming seems to accelerate unusual climate, rainwater-related disasters such as flooding and sediment disasters recently become more frequent and severe. This special feature focuses on the increasing risk of waterrelated disaster and how we are attempting to cope with this. Eleven papers are included and their topics cover from scientific examinations of the increasing risk to policy issues such as the basin hydraulic control and closer cooperation between river improvements and land use measures.
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Hisaki YAMAGA
2022 Volume 36 Issue 1 Pages
47-51
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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Recently, natural disasters regularly strike major cities in Japan, leading to numerous fatalities and billions of yen of property and infrastructure damage each year. This paper surveys researche of various analysis about the effect of natural disasters on economic activity.
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Tomohito YAMADA
2022 Volume 36 Issue 1 Pages
52-57
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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The frequency of extreme rainfall and flooding events has increased over Japan in recent years. With the need to account for the change in the frequency of extreme rainfall, Japan’s new flood control policy, which aims to increase the resilience and sustainability of river basin disasters through comprehensive multilayered actions, considers river basins to include watersheds and floodplain areas. In this study, we propose the risk assessment as an amalgamation of two different approaches, i.e., physical model-oriented ensemble projection and pure mathematical statistics, since both approaches have been found to show similarity in the annual maximum rainfall and the range of its uncertainty. The study also introduces the F-N curve, which shows the increased frequency of rainfall events in the future climate that causes the same number of fatalities when compared to the past climate. Lastly, an analogy has been drawn between modern portfolio theory and flood risk assessment, to facilitate budget allocation to the most resilient flood control measure based on the thousands of rainfall patterns generated from the ensemble approach.
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Shinnya NIGO
2022 Volume 36 Issue 1 Pages
58-61
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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In recent years, global climate change has been progressing, and severe damage caused by heavy rainfall has occurred every year in various parts of Japan. We river managers need to respond to climate change. This paper introduces the tackling of “River Basin Disaster Resilience and Sustainability by All” to implement flood control measures across the basin with the cooperation of all stakeholders.
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Keiko SAKURAI
2022 Volume 36 Issue 1 Pages
62-66
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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It is significant to watch over the whole basins and keep stable and smooth water flow from catchment areas in mountains down to the sea by various artificial measures even especially in ordinary times. Too much emphasis on emergency might fail proper balance in policies.
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Yasuto TACHIKAWA
2022 Volume 36 Issue 1 Pages
67-70
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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To reduce flood damage in the face of increasing frequency and intensity of extreme rainfall events, it is necessary to implement linkages between flood hazard countermeasures and resilient community development. This paper introduces an example of analysis of climate change impact on flood discharge in Japan and discusses flood hazard predictions and risk assessment for flood-resistant regional development.
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Shinji IIDA
2022 Volume 36 Issue 1 Pages
71-77
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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In recent years, hazard maps have been regarded as one of the crucial tools for Disaster Risk Reduction (DRR)education. However, the DRR information issued by the national and local governments does not always reach residents. This document focuses on Risk Communication and Hazard Maps with the aim of sharing an accurate understanding of hazards and risks between residents and the administrations, and presents discussions made on these topics and the future prospects. We had discussed the importance of risk assessment using hazard maps, imaging prospective damages as our own issues through risk communication, and risk management and role-sharing by all parties involved.
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Nozomu KIUCHI
2022 Volume 36 Issue 1 Pages
78-83
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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In the concept of flood mitigation based on future climate change, measures such as the control and management of housing and building and land use in areas with a high risk of inundation are now also within the scope. This paper discusses the concepts of flood risk countermeasures and the role of urban planning, flood countermeasures through land use and building regulations and guidance, and information that can be used as a guide for land use and building regulations and guidance.
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Nobuyuki TSUCHIYA
2022 Volume 36 Issue 1 Pages
84-89
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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In Japan, 50% of the population lives and 75% of the asset is concentrated in the floodplain which occupies ca. 10% of the land area. Flood hazard maps have been created in this “Flood Risk Area”, and it is obligatory to explain the risk to the customers when conducting real estate transactions. However, the population and economy are so concentrated that migration policies are not realistic and this lowland must be reborn as a safe city. The first measure is the revision of the law, which requires that the building foundation height be elevated to the calculated inundation depth when rebuilding in this area. As a long-term vision, it is important to have a policy of “town development on a hill” that fills the entire town high.
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Noriko AKITA
2022 Volume 36 Issue 1 Pages
90-94
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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This paper specifically examines the expected and actual role of green infrastructure in the process of implementing watershed flood control policies. In conclusion, it is suggested that while hard maintenance of rivers will undertake the bulk of the increase in river runoff due to climate change, the concept of watershed flood control itself represents a major shift in the direction of flood control. It is not only provides an opportunity for efficient and sustainable flood prevention, but also expected to preserve the local lifestyle and culture.
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Tsuyoshi TAKAGISHI
2022 Volume 36 Issue 1 Pages
95-99
Published: June 29, 2022
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Recent flood damages in Japan have increased the need for measures in housing design to reduce the inundation damages.Therefore, ‘The Guide on Inundation mitigation Measures in Housing Design’ was drawn up and released in July 2021 by Housing Performance-improvement Committee of The Japan Federation of Housing Organizations.
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Takanori YAMAMOTO
2022 Volume 36 Issue 1 Pages
100-104
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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This article introduces that community development efforts against frequent and intensifying water disaster. In Kurume City, flood damage has occurred for 4 consecutive years. For that, building a safer and securer city is an urgent issue. Among the efforts, we will mainly introduce the location optimization plan including disaster prevention policy with integrated inland water measure project.
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[in Japanese]
2022 Volume 36 Issue 1 Pages
105-108
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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Masaki IGAWA
2022 Volume 36 Issue 1 Pages
109-113
Published: June 29, 2022
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[in Japanese]
2022 Volume 36 Issue 1 Pages
114-115
Published: June 29, 2022
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[in Japanese]
2022 Volume 36 Issue 1 Pages
116-117
Published: June 29, 2022
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[in Japanese]
2022 Volume 36 Issue 1 Pages
118
Published: June 29, 2022
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[in Japanese]
2022 Volume 36 Issue 1 Pages
119
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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[in Japanese]
2022 Volume 36 Issue 1 Pages
120-121
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
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[in Japanese]
2022 Volume 36 Issue 1 Pages
122-125
Published: June 29, 2022
Released on J-STAGE: June 29, 2023
JOURNAL
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