The Sixth JDR Award ceremony was held online due to COVID-19 on October 6, 2020 and a prize were given to Professor Masato Iguchi, Disaster Prevention Research Institute (DPRI), Kyoto University, Japan. We congratulate the winner and sincerely wish for future success.

It is our great pleasures to present the sixth JDR Award to Prof. Masato Iguchi. Prof. Iguchi, as the top guest editor, published two JDR special issues entitled “Integrated Study on Mitigation of Multimodal disasters caused by Ejection of Volcanic Products.” These special issues, vol.11, no.1 in 2016 and vol.14, no.1 in 2019, were results of a project (2013–2018) of the Science and Technology Research Partnership for Sustainable Development (SATREPS). The second special issue set a record for the highest annual download. In addition, he was the first author or co-author of 11 papers published by JDR in 2019.

Professor Iguchi, as one of most recognized volcanologists in the world, has been leading observation research of active volcanoes as the Director of the Sakurajima Volcano Research Center of Kyoto University’s Disaster Prevention Research Institute. He has promoted geophysical research on volcanic activity not only in Japan but also in Indonesia, evaluating volcanic activity by incorporating the results of material science and demonstrating the effectiveness of long-term, multi-item observations in those processes. He has made a significant contribution to the promotion of Indonesian volcano research, taking over the strong will of former Kyoto University professors, and his contributions have culminated in the aforementioned two special issues.

On behalf of the JDR editorial board, I wish to thank Prof. Iguchi for his efforts and to congratulate him as the winner of the sixth JDR Award.

A volcanic eruption is a phenomenon in which ballistic bombs, lapilli, volcanic ash, lava, and gas are discharged. Volcanic ash and gas are carried by the wind, and pyroclastic flows and lava flows are carried away by the force of gravity. These cause disasters of various forms in the areas around volcanoes, sometimes far from eruptive center. Accordingly, volcanic countries, particularly Asian countries such as Japan, Indonesia, and the Philippines, have been the scenes of volcanic disasters. We conducted the research project “Integrated study on mitigation of multimodal disasters caused by the ejection of volcanic products” with the Center for Volcanology and Geological Hazard Mitigation and other institutes in Indonesia under the SATREPS project from FY2013 to 2018. The aim of the project was to advance volcanic hazard mitigation, and I served as the guest editor of “Special Issue on Integrated Study on Mitigation of Multimodal Disasters Caused by Ejection of Volcanic Products” (2016) and “Special Issue on Integrated Study on Mitigation of Multimodal Disasters Caused by Ejection of Volcanic Products: Part 2” (2019) of the Journal of Disaster Research. The articles in the Special Issues have been downloaded by many researchers. The Special Issues cover many topics related to volcanic disasters, but the main theme is how to forecast real-time volcanic hazards using data monitoring, since it is this monitoring that triggers the issuing of warnings.

I have studied the volcanic activity of Sakurajima, the most active volcano in Japan, for 40 years, primarily to forecast its eruptions. Forecasting the eruptions is not as important as forecasting the hazards and risks posed by volcanic actions. Research done on the mitigation of the volcanic hazards of Sakurajima as well as Indonesian volcanoes has been enhanced by interaction. The cumulative volume of magma stored in the past 100 years indicates that Sakurajima has the potential for a large-scale eruption (VEI > 4). An eruption and its dispersal of volcanic ash in particular would cause a variety of disasters over a wide area, as described in the other issues of Journal of Disaster Research. I hope that the research results will be utilized for hazard mitigation in the event of future large-scale eruptions. The research could be advanced through collaboration with studies aimed at the enhancement of resilience and recovery.

The World Bosai Forum/International Disaster Risk Conference@Sendai 2019 (WBF2019) held in November 2019 in Sendai City, Japan, was successful in bringing together actors from multiple sectors to advance the goals of disaster risk reduction (DRR). We would like to take this opportunity to express our heartfelt gratitude to all those who participated in the sessions, exhibitions, poster sessions, and mini-presentations, as well as to the many local people who came to the event.

According to the World Bosai Forum [1], 871 participants from 38 countries attended the WBF2019 which included 50 oral sessions, 3 keynote speeches, 47 poster sessions, 33 mini-presentations, and 14 exhibition booths, which contributed to deepening the discussion and promotion of the “Sendai Framework for Disaster Risk Reduction, 2015–2030” (SFDRR) and in particular progress towards the achievement of Global Target E, to substantially increase the number of countries with national and local disaster risk reduction strategies by 2020. Including lessons learned from the Great East Japan Earthquake and Tsunami, local knowledge and solutions towards advancing BOSAI were actively shared and discussed among the participants who joined this global forum, from various organizations and sectors. In particular, there were many sessions in which young people and private companies played a key role.

The guest editors are pleased to publish this special issue of the Journal of Disaster Research, which is comprised of 13 articles sharing the research advancements presented at the WBF2019. We hope that this special issue on the WBF2019 will contribute to the literature on disaster science and further advances in disaster risk reduction.

The Global Centre for Disaster Statistics (GCDS) at the International Research Institute of Disaster Science (IRIDeS) at Tohoku University was established in April 2015 to support the monitoring of the global targets of the Sendai Framework for Disaster Risk Reduction 2015–2030 (SFDRR). The GCDS, in partnership with the United Nations Development Programme (UNDP), is to provide support for National Disaster Management Offices (NDMOs) to build capacity in developing national disaster loss and damage statistics, an essential tool used in monitoring and policy making for the reduction of disaster risk. Since its establishment, the GCDS has been contributing to the implementation of the SFDRR.

In 2019, the GCDS participated in the Sendai Framework Voluntary Commitments (SFVCs), launched by the United Nations Office for Disaster Risk Reduction (UNDRR). Although the information regarding the activities of the GCDS is described in detail in the first Synthesis and Analysis Report of the SFVC [1], one of the activities committed to in its SFVC is to publish special issues of the Journal of Disaster Research as a contribution to the development of disaster statistics. The guest editors are pleased to publish the third special issue, which contains valuable academic articles closely related to the activities of the GCDS.

We hope that this special issue on the Development of Disaster Statistics makes a significant contribution to the literature on disaster statistics and accelerates its development.

We are very pleased to publish the Special Issue on NIED Frontier Research on Science and Technology for Disaster Risk Reduction and Resilience 2020. There are nine papers in this issue.

The first two papers concern hazard and risk information systems: Sano et al. constructed a real-time risk information map for flood and landslide disasters, and Hirashima et al. created an alert system for snow removal from rooftops. These systems are already in use on the NIED website. The next three papers are case studies of recent storm disasters in Japan and the United States: Cui et al. analyzed the time variation in the distribution of damage reports in the headquarters for heavy-rainfall disaster control in Fukuoka, Shakti et al. studied flood disasters caused by Typhoon Hagibis (2019), and Iizuka and Sakai conducted a meteorological analysis of Hurricane Harvey (2017). Regarding volcanic disasters, Tanada and Nakamura reported the results of an electromagnetic survey of Mt. Nasudake.

This special issue also includes three papers on large-scale model experimentation: Danjo and Ishizawa studied the rainfall infiltration process using NIED’s Large-Scale Rainfall Simulator, Kawamata and Nakazawa conducted experiments concerning liquefaction, and Nakazawa et al. reported the results of experiments on seismic retrofits for road embankments. The experiments used E-Defense, the world’s largest three-dimensional shaking table.

We hope this issue will provide useful information for all readers studying natural disasters.

This special issue summarizes the main results of the first two years of the Science and Technology Research Partnership for Sustainable Development (SATREPS) project, which is supported by the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA). SATREPS has provided excellent opportunities for our joint research team from Thailand and Japan to work in close coordination on challenging multidisciplinary issues.

The Area-BCM for the Enhancement of Resilience of Industrial Complexes in Thailand project was started in 2018. Its scope includes the impacts of urban flooding disasters in Bangkok and its surrounding areas where socio-economic functionalities have been concentrated, as well as chain repercussions of disaster impacts, spread through global supply chains, in important production and logistics facilities in Thailand. Our high-level project targets are based on the Sendai Framework for Disaster Risk Reduction (SFDRR) 2015–2030 as well as Sustainable Development Goals (SDGs), especially #11 (Sustainable Cities and Communities), #8 (Decent Work and Economic Growth), and #13 (Climate Action).

This issue contains interim research results from our project mainly led by members from Thailand with regional aspects of our project site. However, we plan to release another special issue by the end of our project that will include more generalized concepts and frameworks that can be applicable to other regions or countries, including Japan.

As we take a multidisciplinary approach that includes science and technology, life and well-being science, and social science, our main objective in featuring this special issue is to make our interim research results known to other researchers and practitioners in related fields. We do this in order to get opinions and suggestions from different perspectives so that these may be reflected in the directions our research takes during the remainder of our project term.

Finally, I am truly grateful for the authors’ insightful contributions and the referees’ acute professional suggestions, which together make this JDR special issue a valuable contribution to making our society more resilient to future disasters.

This special issue summarizes the main results of the latter half of a five-year project called SATREPS (Science and Technology Research Partnership for Sustainable Development) supported by Japan International Cooperation Agency (JICA) and Japan Science and Technology Agency (JST). The project title is “Development of a Comprehensive Disaster Resilience System and Collaboration Platform in Myanmar” and it is the first SATREPS project adopted in Myanmar. Yangon Technological University (YTU) is a major counterpart organization and both national and local governmental organizations are working together as strategic partners.

In the first half of the project, a database was constructed, composed of important data for assessing urban safety and disaster risk, such as the ground properties, and distribution of buildings, people, and traffic. Using the database, city development model and evaluation models for flood and earthquake risks were developed.

In the latter half of the project, combining these two evaluation models, a system was developed for discussing future damage differences due to different urban plans and countermeasures. Furthermore, regarding flood, near-real-time flood inundation simulation system was developed. Related to earthquake disaster, a support system was developed for implementation of efficient countermeasures for both pre- and post-disaster. For infrastructure maintenance, performance monitoring and maintenance methods were proposed. Finally, in order to continue research activities and promote a continuous utilization of project results, a consortium scheme in which industry, government, and academia can work together has been created.

We hope that our SATREPS project activities can contribute to proper urban development and improvement of disaster management issues not only in Myanmar but also in other Asian countries.

The Earthquake and Volcano Hazards Observation and Research Program (2014–2018) carried out comprehensive research to mitigate disasters related to earthquakes and volcanic eruptions. The program selected multidisciplinary research in which earth scientists who study the processes of earthquake generation and volcanic eruptions, historians, archaeologists, human and social scientists, and engineers were all involved. The program aimed to collect pre-instrumental and pre-historical earthquake and volcanic data to understand earthquake and volcano disasters, to find risk evaluation techniques, and to evaluate disaster response and preparedness. Active collaborations between researchers from different science fields inspired new ideas and have driven various research in the program. New findings from the program have also created international collaborations and recognitions. Most of the results and new findings in the program have already been published in various internationally recognized journals and have greatly influenced scientific communities.

We believe that it is important to compile our findings from the last five years of the program and to publish the essence of our findings and published papers in this special issue. We hope that this special issue will be of value to researchers who are interested in multidisciplinary studies of mitigation of disasters such as earthquakes, volcanic eruptions, and related phenomena.

The Fifth JDR Award ceremony was held in Kanda, Japan, at December 18, 2019 and a prize were given to Doctor Yuichiro Usuda, National Research Institute for Earth Science and Disaster Resilience (NIED), Japan. We congratulate the winner and sincerely wish for future success.

It is our great pleasure to present the fifth JDR Award to Dr. Yuichiro Usuda. Dr. Usuda has made outstanding contributions to the Journal of Disaster Research (JDR) as the guest editor and the author of the JDR’s “Special Issue on NIED Frontier Researches on Science and Technology for Disaster Risk Reduction and Resilience 2017” in Vol.12 No.5, which has been the most downloaded special issue for the past three years.

Dr. Usuda is a leading scientist in frontier research for natural disaster risk management and resilience in National Research Institute for Earth Science and Disaster Resilience (NIED). He is working with researchers of many different disciplines as well as stake-holders in practical devastating disaster management situations. Thus, in his studies, he has been integrating many different disciplines to generate a new intellectual paradigm for managing multi-hazard disasters, such as earthquake disasters combined with meteorological disasters caused by rain, drought, snow, extreme heat or cold, ice, or wind. This is quite important in Japan and other disaster-prone countries, considering today’s global climate change. The special issue is the fruit of his research efforts.

On behalf of the JDR editorial board, I wish to thank Dr. Yuichiro Usuda for his efforts and to congratulate him as the winner of the fifth JDR Award.

I would like to express my sincere appreciation for the honor of receiving this prestigious award.

The award has been presented to me for the “Special Issue on NIED Frontier Researches on Science and Technology for Disaster Risk Reduction and Resilience 2017” of JDR Vol.12 No.5, for which I was the guest editor. I heard that this special issue has been the most downloaded over the past three years.

NIED, to which I belong, is an institute that deals with natural disasters comprehensively. Since 2016, we have been working to become a “core organization for innovation in disaster resilience science and technology” as a new seven-year plan. Japan is a country prone to disasters, with many large-scale natural disasters occurring every year. Recent examples would be the 2016 Kumamoto Earthquake, 2017 Nasu Avalanche, Northern-Kyushu Heavy Rain, 2018 Eruption of Mt. Kusatsu-Shirane, Western-Japan Heavy Rain, Hokkaido Eastern Iburi Earthquake, and 2019 Typhoon #19. We should collect “intelligence” related to natural disasters in multiple fields to reduce our disaster risk and improve our resilience.

The Special Issue is a compilation of research results from individual fields. I am elated that the first special issue of NIED has gained such attention. NIED will continue to conduct research across multiple fields. We hope that NIED’s activities will lead to collaboration with many people and that the integration of intelligence will improve disaster resilience in Japan and all over the world.

The National Research Institute for Earth Science and Disaster Resilience (NIED) is working on three tasks: predicting disasters, preventing damage, and realizing speedy reconstruction and recovery efforts in the event of natural disasters such as earthquakes, tsunamis, volcanic eruptions, landslides, torrential rains, blizzards, and ice storms.

In the last three years of the NIED’s fourth mid/long term plan period, which began in 2016, natural disasters have occurred every year, including earthquake disasters such as the 2016 Kumamoto earthquake (M7.3) and the 2018 Iburi, Hokkaido, earthquake (M7.1). Disasters of the rainfall include the heavy rainfall in the northern Kyushu (Fukuoka and Oita) in July 2017, the heavy rain event in southwestern Japan in July 2018, the rainfall in northern Kyushu (Saga) in August 2019, and the heavy rainfall in Kanto and Tohoku in October 2019. There were also other disasters: an avalanche accident on Nasudake in 2017 and a phreatic eruption of Kusatsu-Shiranesan in 2018.

Due to the above-mentioned very frequent occurrence of such natural disasters on the Japanese islands, our institute has conducted several research projects to mitigate the damage from such disasters and to accelerate the recovery from them. As the third NIED special issue in the Journal of Disaster Research, several related research results were presented such as those on seismic disasters (Wakai et al., Nakazawa et al., and Ohsumi et al.), those on climatic disasters (Nakamura, and Ishizawa and Danjo), and those of their integrated researches for disaster risk reduction (Cui et al. and Nakajima et al.).

Although the achievements detailed in these papers are the results of individual research, the NIED hopes that these results as a whole will be fully utilized to promote science and technology for disaster risk reduction and resilience. The NIED hopes that this special issue awakens the readers’ interest in new research and, of course, creates an opportunity for further collaborative works with us.

As global sea levels continue to rise, atoll countries—facing persistent and imminent risk—are expected to become source nations of climate migrants in the foreseeable future. This special issue features 10 academic articles, which examine if residents in Pacific atoll countries were, are, or will be ready to re-establish their livelihoods after relocation.

The topic of migration is akin to a kaleidoscope, with continuously evolving shapes and colors, necessitating a broad spectrum of approaches across various disciplines. The authors of these articles thus examined the topic through mathematics, civil engineering, cultural and disaster studies, economics, education, geography, international relations, language, law, sociology and politics. The methodologies applied range from policy analysis to structural equation modeling.

Migration driven by climate change takes place gradually, even over a few decades. Unlike forced migration due to causes such as war and conflict, future climate migrants have the short-term advantage of time to ready themselves for displacement from their homeland. Preparation prior to relocation may include enhancing one’s language or vocational skills.

One of the focal points of this special issue is therefore the preparedness of migrants, both past and future. Case studies were carried out across Fiji, Kiribati, the Marshall Islands, Micronesia, and the United States.

We also considered how migrants are received following resettlement, both in terms of legal instruments and assistance given by the public and private sectors. Case studies conducted in Austria and the United States address this aspect.

Yet another focus is to identify prevailing factors through which people develop their perceptions of climate change and its implications, for such perceptions are a driving force for migration. Case studies in Kiribati and the Marshall Islands contribute to this understanding.

We hope this special issue sharpens the vision of climate change and migration, and serves as a stepping stone for further research in the field.

Since the start of the 21st century, major disasters, such as the 2004 Indian Ocean Tsunami and the 2011 Great East Japan Earthquake, have caused tremendous damage. The scope of the impact has spread across borders because global chains and the like have diversified. Consequently, disaster prevention and mitigation for reduction is now an important issue in the international community. To advance disaster reduction, it has been necessary to combine the humanities and social sciences with medical science and natural sciences as well, and Tohoku University has become the base of disaster prevention. What activities have begun, and for what purpose? I would like to find out and deepen my interest through this mini special feature.

The first part gives the background and objectives of the world’s top research cluster for disaster science. The second part presents survival study, or how to protect oneself from disasters such as tsunamis. Survival study is highly unique to this cluster. Reclassifying is proposed to compile the causes of death indicated by autopsy and systematizing deaths in the event of a disaster. Next, efforts in the humanities and social sciences to preserve the folk performing arts left in the community are presented. It has been pointed out that once local communities and connections are lost in disasters and its recovery faces more difficulty.

A year has passed since the first special issue on the development of disaster statistics was published in the Journal of Disaster Research. The Global Centre for Disaster Statistics (GCDS) at Tohoku University is steadily making progress as well. The GCDS now participates in Sendai Framework Voluntary Commitments (SFVC), which was launched by the United Nations Office for Disaster Risk Reduction (UNDRR). In addition, the GCDS has committed to publishing this special issue of the Journal of Disaster Research toward the development of disaster statistics. Needless to say, the publication of the special issue itself has a positive impact on accelerating research activity at the GCDS.

The guest editors are pleased to publish valuable academic articles that are closely related to the activities of the GCDS, thus contributing to the development of disaster statistics. In this second issue, there seem to be two main categories of research questions: “development of the existing disciplined-based research” and “analyzing various issues by means of questionnaire surveys.” Under the first category, by means of disaster statistics, two disciplines are covered: river engineering and international studies. The large number of studies based on questionnaire surveys act as an excellent reminder of the effectiveness of such a survey as a methodology for disaster statistics.

Last but not least, we hope that this second special issue on the development of disaster statistics will also contribute to the literature on disaster statistics and accelerate its development.

In 2018, Japan not only had an abnormally hot summer, but also experienced successive disasters, including the Northern Osaka Earthquake, the Western Japan Heavy Rain, Typhoon No. 21, the Hokkaido Mid Iburi Earthquake, and Typhoon No. 24. In particular, the record-breaking heavy rains continued in a large area of Western Japan from June 28 to July 4, due to the storm front and Typhoon No. 7. The amount of rainfall totaled over 1,800 mm in the Shikoku Region and 1,200 mm in the Tokai Region. The quantity of rain that fell within 48 and 72 hours in both the Chugoku and Kinki Regions, as well as many other areas, was the highest rainfall ever recorded. A special warning regarding heavy rain was issued in 10 prefectures and every kind of disaster that Japan had experienced recently occurred in various locations. As of August 21, a report from Disaster Management Section, Cabinet Office indicated 221 deaths, 9 missing persons, 68 severely injured persons, 319 slightly injured persons, 3 persons with an unknown level of injury, 6,206 destroyed homes, 9,764 severely-damaged homes, 3,765 partially-destroyed homes, 9,006 homes with flooding above the first-floor level, and 20,086 houses with flooding below the first-floor level.

During this large-scale disaster, which was named the Western Japan Heavy Rain, the Disaster Relief Act was applied to 110 municipalities and JDR decided to issue a special edition to address issues pertinent to this specific disaster event. Paper submissions were requested that not only comprised demonstrative researches on hazard and damage characteristics, methods of evacuation, and features of disaster response, but also included introductions of best practices, which were conducted in various fields and prompted diverse collaboration to develop and establish measures to mediate the effect of the future Nankai Trough Earthquake, as well as problems and solutions to successfully realize diverse collaboration. In response to the call for papers for the special issue, nine researches were submitted and six were accepted following a strict review process. To address the category of hazard characteristics analyses, two papers analyzing the characteristics of the flooding resulting from the Western Japan Heavy Rain and one paper comprising an analysis of landslide disasters were accepted. In the category of disaster response, one paper focusing on the use of SNS and two papers regarding the elderly were accepted. It would be our sincere pleasure if this special issue could contribute to future reductions in damage resulting from natural disasters.

The phreatic eruption of the Ontake volcano in 2014 reminded us that even moderately active volcanoes, most of which are tourist attractions in Japan, can sometimes exhibit unpredictable and hazardous behaviors, taking away the lives of those who do not fully recognize their threat. With this adding momentum, the Japanese people want volcanology and its applications to be developed to further improve the precision of volcanic eruption alerts. To meet this expectation, a comprehensive program, the “Integrated program for next-generation volcano research and human resource development,” sponsored by the Ministry of Education, Culture, Sports, Science and Technology, was started in November 2016 on a 10-years plan. The most stunning aspect of this program is the integration of (1) a research project and (2) a human resource development program to mitigate volcanic disasters in Japan from long-term point of view. Both of these are collaboratively supported by many researchers from almost all Japanese universities and national institutions related to volcanology. This special issue compiles several topics in this research project to demonstrate its present stage of development and to indicate its anticipated future destination. The target of the research project is to develop, using multi-disciplinary scientific methods, new ways of evaluating volcanic hazards. Specifically, four research groups jointly (A) construct a data archive and exchange system connecting all Japanese volcanologists, (B) develop new geophysical and geochemical observation techniques and methods of analyzing data, (C) evolve methods of predicting volcanic eruptions based on eruption history from precise geological survey and numerical simulations, and (D) propose the provision of technologies for volcanic disasters. We hope that this program will greatly help to mitigate volcanic disasters in Japan, and we will strive to realize this through the research project.

The 2011 Great East Japan Earthquake and Tsunami disaster taught us many lessons. Many new findings, insights, and suggestions have been made and implemented in damage determination and in disaster observation, sensing, and simulation. The challenges in terms of mitigating damage from future catastrophic natural disasters, such as the expected Metropolitan Tokyo Earthquake and Nankai Trough Earthquake and Tsunami, are how we share the visions of the possible impacts and prepare to mitigate loss and damage, how we enhance society’s disaster resilience and the ability of society and social systems to prepare well, how we respond promptly and effectively to natural disasters, and how we apply lessons learned to future disaster management.

In recent years, a huge amount of information known as “disaster big data,” including data related to the dynamic movement of a large number of people, vehicles, and goods as IoT, has been obtained to understand how our society responds to natural disasters, both inside and outside the affected areas. The key question is how to utilize disaster big data to enhance disaster resilience.

Researchers with various areas of expertise are working together in a collaborative project called JST CREST: “Establishing the Most Advanced Disaster Reduction Management System by Fusion of Real-Time Disaster Simulation and Big Data Assimilation.” The project aims to identify possible disaster scenarios caused by earthquakes and tsunamis that occur and progress in a chained or compound manner, as well as to create new technologies to lead responses and disaster mitigation measures that help societies recover from disasters.

Since 2016, we have published three special issues entitled “Disaster and Big Data,” and now we will publish a fourth one which includes 10 research papers and 1 report. These aim to share the recent progress of the project as a sequel to Part 3, published in March 2018. As a guest editor of this issue, I would like to express our deep gratitude for the insightful comments and suggestions made by the reviewers and members of the editorial committee. It is my hope that the fruits of everyone’s efforts and outcomes will be utilized in disaster management efforts to mitigate damage and losses from future catastrophic disasters.

Enhancing social resilience in the event of natural disasters is a critical issue for Japan. It will requires a need huge efforts to further increase the physical preparedness; on the other hand, compared to increasing physical preparedness, enhancing social resilience is a cost-effective means of mitigating the effects of natural disasters. The Cross-ministerial Strategic Innovation Promotion program (SIP), the biggest national research program in Japan, selected a theme related to enhancing social resilience in the face of natural disasters in 2014. The authors of this special issue worked as a part of the SIP for five years and developed state-of-the-art technologies for the enhancement, namely, next-generation tsunami and heavy rain observation, integrated liquefaction counter-measures, methods for sharing disaster information, a real-time disaster estimation system, an emergency communication system, and the development of applications for regional use. Most of the technologies have been implemented in efforts at natural disaster mitigation following earthquakes and heavy rains in 2017 and 2018. The development and implementation of advanced technologies are the essence of the SIP because it aims to foster innovation. While the SIP is a Japanese government program, it promotes international utilization of the technologies it develops. There are many instances which might be studied better by developing and utilizing advanced technologies in various countries following different types of natural disasters. I hope that this special issue will be a gateway for readers who are interested in using such advanced technologies to mitigate natural disasters and enhance social resilience during such events.

Our research project titled “Integrated study on mitigation of multimodal disasters caused by ejection of volcanic products” began in 2014 under SATREPS (Science and Technology Research Partnership for Sustainable Development) and is now coming to an end in 2019. Indonesia has 127 active volcanoes distributed along its archipelago making it a high risk location for volcano-related disasters. The target volcanoes in our study are Guntur, Galunggung, Merapi, Kelud, and Semeru in Java, and Sinabung in North Sumatra. Guntur and Galunggung are currently dormant and are potentially high-risk volcanoes. Merapi generated pyroclastic flows along the Gendol River in 2010, which resulted in over 300 casualties and induced frequent lahars. New eruptive activity of Merapi began in 2018. The 2014 eruption of Kelud formed a gigantic ash plume over 17 km high, dispersing ash widely over the island of Java. Semeru continued minor eruptive activity, accompanying a risk of a dome collapse. The aim of our research includes disaster mitigation of the Sinabung volcano, whose eruption began to form a lava dome at its summit at the end of 2013, followed by frequent pyroclastic flows for approximately 4 years, and the deposits became the source of rain-triggered lahars. Our goal is to implement SSDM (Support System for Decision-Making), which would allow us to forecast volcano-related hazards based on scales and types of eruptions inferred from monitoring data. This special issue collects fundamental scientific knowledge and technology for the SSDM as output from our project. The SSDM is an integrated system of monitoring, constructed scenarios, forecasting scale of eruption, simulation of sediment movement and volcanic ash dispersion in the atmosphere. X-band radars newly installed by our project in Indonesia were well utilized for estimation of spatial distribution not only of rain fall in catchments but also of volcanic ash clouds. Finally, we hope the SSDM will continue to be utilized under a consortium in Merapi, which was newly established in collaboration with our projects, and extended to other volcanoes.

The Global Forum on Science and Technology for Disaster Resilience was held in Tokyo from 23 to 25 November 2017 with 228 participants from 42 countries. To implement the priorities for action in the Sendai Framework for Disaster Risk Reduction (DRR) 2015–2030, the Forum aimed to encourage all stakeholders to develop guidelines for supporting national platforms for DRR by making the best use of science and technology and producing a synthesis report on disaster science and technology.

During the Forum, seven working groups held presentations and panel discussions that corresponded to the four priorities for action in the Sendai Framework (1. Understanding disaster risk; 2. Strengthening disaster risk governance; 3. Investing in DDR; and 4. “Build Back Better”), as well as on Interdisciplinary collaboration, National platforms, and Synthesis report.

At the end of the Forum, seven policy briefs, as well as “Tokyo Statement 2017,” were adopted. In this special issue of the Journal of Disaster Research, co-chairs of the working groups summarize their discussions and recommendations for each working group. Additional papers on the role of private sectors and Nation’s Synthesis are also included in the issue.

We thank all the authors and reviewers of the papers, as well as all the participants of the Forum for their valuable contributions.

The World Bosai Forum was held at the Sendai International Center and Kawauchi Hagi Hall, Tohoku University, bringing together 947 participants from over 42 countries. This was nearly double the number of participants that we had initially expected. Proactive and meaningful discussions were held by a wide range of officials and experts from domestic and overseas industries, governments, academia, and private sectors, as well as by local citizens. From our partnership with the Asian Conference on Urban Disaster Reduction (ACUDR) and International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA), we had a total of 126 participants.

We successfully created a platform for building international cooperation to share and resolve the current situation and handle various challenges for Bosai or disaster risk reduction. Practical and effective discussions have contributed to raising and promoting awareness of Bosai and the Sendai Framework 2015–2030 to the world from Sendai. Our first World Bosai Forum was concluded with productive outcomes, and its future meetings will be held every 2 years.

The guest editors of this special issue are pleased to publish valuable academic papers presented at the first World Bosai Forum. As you may notice, this research stems from a wide variety of current issues. The nature of interdisciplinary approaches may be unique to the World Bosai Forum, and the guest editors hope that this special issue will contribute to enhanced recognition of the Forum.

This special issue presents the findings obtained so far by the relevant studies that have been conducted mainly at the Global Centre for Disaster Statistics (GCDS), which is affiliated with the International Research Institute of Disaster Science (IRIDeS) at Tohoku University, Japan.

The establishment of the GCDS was jointly announced by the United Nations Development Program (UNDP) and the IRIDeS in March 2015 during the Third UN World Conference on Disaster Risk Reduction (UNWCDRR) in Sendai, Japan. The Centre is expected to contribute greatly to sustainable development, based on risk-informed policy making, through the following activities: providing scientific analyses and technical advice based on their disaster loss and damage data, supporting the United Nations International Strategy for Disaster Reduction (UNISDR) and individual countries in the work of monitoring the progress of the Sendai Framework for Disaster Risk Reduction (SFDRR) and the 2030 Agenda for Sustainable Development, and providing policy advice to build the capacities of national/local governments, based on their demands.

In this context, the guest editors of this special issue are pleased to publish valuable academic articles closely related to the GCDS’ activities that contribute to the development of disaster statistics. As Sasaki and Ono (2018) observed, there exist three major categories of research questions that contribute to the development of disaster statistics: investigation into disaster statistics and/or global disaster-related databases, development of the existing discipline-based research, and analysis of various issues through questionnaire surveys.

Last but not least, it is our hope that this special issue contributes to the literature of disaster statistics and accelerates its development.

The National Research Institute for Earth Science and Disaster Resilience (NIED) is working on three tasks: predicting disasters, preventing damage, and realizing speedy reconstruction and recovery efforts in the event of natural disasters such as earthquakes, tsunamis, volcanic eruptions, landslides, torrential rains, blizzards, and ice storms.

In the last two years of the NIED’s fourth mid/long term plan period, which began in 2016, the 2016 Kumamoto earthquake (M6.5 and M7.3), the heavy rainfall in the Northern Kyushu District in July 2017, and the heavy rain event of July 2018 are listed as “named” disasters, named by Japan Meteorological Agency. In addition, there were other disasters: an avalanche accident on Nasudake in 2017, an earthquake (M6.1) with its epicenter in northern Osaka, an eruption of Kirishimayama (Shinmoedake and Ioyama) and a phreatic eruption of Kusatsu-Shiranesan in 2018.

The results of research done on the above-mentioned disasters and the latest results of ongoing projects in each research division and center were compiled as the second NIED special issue of the Journal of Disaster Research (JDR). In this special issue, we are delighted to present ten papers on three topics: climatic disasters, seismic disasters, and integrated research on disaster risk reduction. In particular, this special issue contains three papers on the above-mentioned heavy rainfall in the Northern Kyushu District in July 2017 and two papers related to the Kumamoto earthquake.

Although the achievements detailed in these papers are the results of individual research, the NIED hopes that these results as a whole will be fully utilized to promote science and technology for disaster risk reduction and resilience. The NIED hopes that this special issue awakens the readers’ interest in new research and, of course, creates an opportunity for further collaborative works with us.

1. Introduction There are approximately 2,700 dams in Japan. Their total reservoir capacity is approximately 25 billion m³ (BCM), far less than the 34.4 BCM of Hoover Dam in the US or the 39.3 BCM of the Three Gorges Dam in China. Lake Biwa, with a capacity of 27.5 BCM, which has recently been used for multiple purposes by the Lake Biwa Comprehensive Development Project, is equivalent in scale to such artificial lakes. On the other hand, dams in Japan that were constructed on mountain rivers with considerable sediment deposits are decreasing their capacity more rapidly than those constructed on continental rivers, so they require measures against deposition to maintain their long-term reservoir capacity. In addition, extreme weather phenomena (increased rainfall and drought intensity) under climate changes increase high demand for storage capacity of dams. In order to effectively use these dams as limited resources and to hand them over to the next generation in healthy state, continuous investment and development of maintenance technology are required. Recently, to promote this investment and development, “A vision for upgrading dams (effective use of existing dams to mitigate damage from frequent floods and droughts and to generate renewable energy)” was established by the Ministry of Land, Infrastructure, Transport, and Tourism (MLIT) on June 27, 2017 [1]. This special issue is collecting the significance of the dam upgrading projects and important challenges from various aspects to be implemented. for further details, please refer the pdf.
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The Science and Technology Research Partnership for Sustainable Development (SATREPS) is a Japanese government program that promotes international joint research. The program is structured as a collaboration between the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA). The program includes various fields, such as Environment and Energy, Bioresources, Disaster Prevention and Mitigation, and Infectious Disease Control, and a total 52 projects were currently in progress as of May, 2018.

It is expected that the promotion of international joint research under this program will enable Japanese research institutions to conduct research more effectively in fields and having targets that make it advantageous to do that research in developing countries, including countries in Latin America and the Caribbean, Asia, and Africa.

Recently, SATREPS projects in the field of Infectious Disease have been but under the control of the Japan Agency for Medical Research and Development (AMED). Although adult maladies, such as malignant tumors, heart disease, and cerebral apoplexy, are major causes of death in the developed countries including Japan, infectious diseases are still responsible for the high mortality rates in developing countries. Therefore, Infectious Disease Control is the important field of SATREPS.

Infectious Disease Control projects are progressing in several countries, including Kenya, Zambia, Bangladesh, the Philippines, and Brazil, and various infectious diseases and pathogens have been targeted.

In this special issue on Infectious Disease Control, the following reports from three projects have been selected: “The JICA-AMED SATREPS Project to Control Outbreaks of Yellow Fever and Rift Valley Fever in Kenya” by Nagasaki University, “Comprehensive Etiological and Epidemiological Study on Acute Respiratory Infections in Children in the Philippines” by Tohoku University, and “International Joint Research on Antifungal Resistant Fungi in Brazil” by Chiba University. These projects include viral, bacterial, and fungal infections.

If they become available, further supplementary reports from other projects in this field will be published in a future issue.