Research Achievements - Original paper -

Digital support for female students in physical education universities in Japan

Junko Okuyama, Shuji Seto, Tomonori Motokawa, Tomomi Kato, Aya Miyamoto, Maki Maekawa, Shunichi Funakoshi, Tatsuma Okazaki, Satoru Ebihara

Scientific Reports ( Scientific Reports )  15 ( 1 )   2025.05  [Refereed]

Research paper (journal)   Domestic Co-author

Abstract

Alongside acquiring specialized knowledge and accomplishing developmental tasks, athletic colleges require young athletes to also be active. We investigated the use of a smartphone application, ME-FULLNESS, as an unprecedented support method for female college students currently enrolled in athletic colleges. ME-FULLNESS is an application that infers one’s psychological state from their facial information and improves their psychological state with music, vibration, and images that match that psychological state. We conducted a psychological survey with purposively selected female university students (18 to 24 years) at the International Pacific University in Okayama, Japan, before and after one month of using ME-FULLNESS (N = 76) and a group of non-users (N = 25). The app-using group showed significant improvement in depressive symptoms (p = 0.002), anxiety symptoms (p = 0.000), stress (p = 0.000), insomnia (p = 0.002), severity of premenstrual syndrome (p = 0.000), and resilience scores (p = 0.000), while the non-app-using group showed improvement in anxiety (p = 0.009) and resilience scores (p = 0.000). This study suggests that using the ME-FULLNESS app may improve depression, stress, insomnia, and resilience among athletic female students, positively contributing to their college life and sports performance.

DOI

Linking affected community and academic knowledge: a community-based participatory research framework based on a Shichigahama project

Shuji Seto, Junko Okuyama, Toshiki Iwasaki, Yu Fukuda, Toru Matsuzawa, Kiyoshi Ito, Hiroki Takakura, Kenjiro Terada, Fumihiko Imamura

Scientific Reports ( Springer Nature )  14 ( 1 )   2024.12  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

The 2024 Noto Peninsula earthquake: Preliminary observations and lessons to be learned

Anawat Suppasri, Miwako Kitamura, David Alexander, Shuji Seto, Fumihiko Imamura

International Journal of Disaster Risk Reduction ( International Journal of Disaster Risk Reduction )  110   104611 - 104611   2024.08  [Refereed]

Research paper (journal)   International Co-author

DOI

Establishment of a post-disaster healthcare information booklet for the Turkey–Syrian earthquake, based on past disasters

Junko Okuyama, Shuji Seto, Yu Fukuda, Yoshimi Suzukamo, Tatsuma Okazaki, Yoshihito Furusawa, Shin-Ichi Izumi, Kiyoshi Ito, Fumihiko Imamura

Scientific Reports ( Springer Nature )  14 ( 1 )   2024.01  [Refereed]

Research paper (journal)   Domestic Co-author

The scientific evidence based on experiences with past disasters points to the possibility of the occurrence of future mental health issues among those who were affected by the recent Turkey–Syria earthquake. However, post-disaster care information on factors that could give rise to mental health issues among those affected have yet to be provided. In March 2011, Tohoku University compiled and published a booklet with post-disaster healthcare information based on the experiences with the Great East Japan Earthquake. This study aimed to promote the introduction and use of this booklet for post-disaster care in Turkey and Syria by presenting the results of a satisfaction survey conducted with relevant Japanese organizations about the booklet. A total of 505 Japanese organizations participated in the satisfaction survey of, and evaluated, the booklet. The results indicated the need to consider the ease of understanding for the general public when providing information on post-disaster care through booklets. We hope that this study leads to the appropriate provision of easy-to-understand, post-disaster healthcare information to the victims of the Turkey–Syria earthquake and future disasters.

DOI DOI2

RALITY AND FUTURE ISSUES IN THE PROCESS OF FINDING VICTIMS IN THE DEBRIS OF THE 2011 TOHOKU EARTHQUAKE AND TSUNAMI

Kosei SHINODA, Shuji SETO, Anawat SUPPASRI, Fumihiko IMAMURA

Japanese Journal of JSCE   79 ( 17 ) n/a - n/a   2023.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

AN ACTUAL SITUATION AND FACTOR ANALYSIS OF CASUALTIES CAUSED BY TSUNAMI FIRES: A CASE OF MIYAGI PREFECTURE IN THE 2011 TOHOKU EARTHQUAKE

Ryota TAKEI, Shuji SETO, Anawat SUPPASRI, Fumihiko IMAMURA

Japanese Journal of JSCE   79 ( 17 ) n/a - n/a   2023.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Life and Stress of Japanese Children and Adolescents During the Prolonged Coronavirus Disease 2019 (COVID-19) Pandemic

Junko Okuyama, Shuji Seto, Yu Fukuda, Kiyoshi Ito, Fumihiko Imamura, Shunichi Funakoshi, Shin-Ichi Izumi

Journal of Disaster Research ( Fuji Technology Press Ltd. )  18 ( 1 ) 48 - 56   2023.01  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

Supporting adolescents’ mental health during COVID-19 by utilising lessons from the aftermath of the Great East Japan Earthquake

Junko Okuyama, Shin-Ichi Izumi, Shunichi Funakoshi, Shuji Seto, Hiroyuki Sasaki, Kiyoshi Ito, Fumihiko Imamura, Mayumi Willgerodt, Yu Fukuda

Humanities and Social Sciences Communications ( Humanities and Social Sciences Communications )  9 ( 1 ) 332 - 332   2022.12  [Refereed]

Research paper (journal)   International Co-author

Abstract

Historical data can determine how adolescents recover from difficult situations such as the Coronavirus disease 2019 (COVID-19) pandemic. This study analysed 3 years of data obtained from high-school students who had been affected by the 2011 Great East Japan Earthquake and consequently evidenced the importance of increasing resilience among affected adolescents. This involved identifying factors contributing to resilience through a model that assessed for each tsunami disaster. This model was determined by assessing the correlation between survivors’ resilience scores and their measured psychological and lifestyle scores. This approach showed that, in all tsunami damage models, resilience was most affected by the depressed emotions. Thus, our approach suggests that interventions for improving the depressed mood may improve resilience in adolescents during the COVID-19 pandemic.

DOI PubMed

Situation of death due to injury and its influencing factors in Miyagi Prefecture in the Great East Japan Earthquake

KAMATA Hirokazu, SETO Shuji, SUPPASRI Anawat, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  78 ( 2 ) I_349 - I_354   2022.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

AN ANALYSIS OF THE VICTIM FOUND IN DEBRIS OF THE GREAT EAST JAPAN EARTHQUAKE: A CASE STUDY OF NATORI CITY AND KESENNUMA CITY, MIYAGI PREFECTURE

SHINODA Kosei, SETO Shuji, SUPPASRI Anawat, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  78 ( 2 ) I_355 - I_360   2022.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

A study on hypothermia and associated countermeasures in tsunami disasters: A case study of Miyagi Prefecture during the 2011 great East Japan earthquake

Hirokazu Kamata, Shuji Seto, Anawat Suppasri, Hiroyuki Sasaki, Shinichi Egawa, Fumihiko Imamura

International Journal of Disaster Risk Reduction ( International Journal of Disaster Risk Reduction )  81   103253 - 103253   2022.10  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Physical activity and mental health of children and adolescents in prolonged COVID-19 pandemic

Okuyama Junko, Seto Shuji

Stress Science Research ( Public Health Research Foundation )  36   3 - 11   2022.05  [Refereed]  [Invited]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

Life Alterations and Stress During the COVID-19 Pandemic in Japan: Two-Time Comparison

Junko Okuyama, Shuji Seto, Yu Fukuda, Kiyoshi Ito, Fumihiko Imamura, Shunichi Funakoshi, Shin-Ichi Izumi

Journal of Disaster Research ( Fuji Technology Press Ltd. )  17 ( 1 ) 43 - 50   2022.02  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

ANALYSIS OF THE ACTUAL SITUATION OF HYPOTHERMIA VICTIMS IN MIYAGI PREFECTURE IN CASE OF THE GREAT EAST JAPAN EARTHQUAKE

KAMATA Hirokazu, SETO Shuji, SUPPASRI Anawat, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  77 ( 2 ) I_1075 - I_1080   2021.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

EXAMINATION OF CASUALTY EASTIMATION MODELS BASED ON THE VICTIM INFORMATION IN CASE OF THE GREAT EAST JAPAN EARTHQUAKE AT ISHINOMAKI CITY, MIYAGI PREFECTURE

SERIKAWA Tomoki, SETO Shuji, SUPPASRI Anawat, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  77 ( 2 ) I_1069 - I_1074   2021.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

Importance of psychological support for disaster-affected adolescents: 10 years after the great east japan earthquake

Junko Okuyama, Shunichi Funakoshi, Shuji Seto, Yu Fukuda, Kiyoshi Ito, Fumihiko Imamura, Shin-Ichi Izumi

Journal of Disaster Research ( Journal of Disaster Research )  16 ( 6 ) 914 - 921   2021.09  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

Mental health and physical activity among children and adolescents during the COVID-19 pandemic

Junko Okuyama, Shuji Seto, Yu Fukuda, Shunichi Funakoshi, Shintaro Amae, Jun Onobe, Shinichi Izumi, Kiyoshi Ito, Fumihiko Imamura

Tohoku Journal of Experimental Medicine ( Tohoku Journal of Experimental Medicine )  253 ( 3 ) 203 - 215   2021.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI PubMed CiNii Research

Spatial distribution of causes of death in the 2011 tohoku tsunami at Ishinomaki City, Miyagi Prefecture

Tomoki Serikawa, Shuji Seto, Anawat Suppasri, Fumihiko Imamura

Journal of Disaster Research ( Journal of Disaster Research )  15 ( 7 ) 943 - 958   2020.12  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

WBF-2019 core research cluster of disaster science planning session as disaster preparedness: Participation in a training program for conductor-type disaster healthcare personnel

Junko Okuyama, Hiroyuki Sasaki, Shuji Seto, Yu Fukuda, Toshiki Iwasaki, Toru Matsuzawa, Kiyoshi Ito, Takako Izumi, Hiroki Takakura, Fumihiko Imamura, Tadashi Ishi

Journal of Disaster Research ( Journal of Disaster Research )  15 ( 7 ) 900 - 912   2020.12  [Refereed]

Research paper (journal)   Domestic Co-author

DOI CiNii Research

Classification of tsunami deaths by modifying ICD-10 categories in the 2011 Tohoku earthquake tsunami - A case study in Miyagi prefecture

Shuji Seto, Fumihiko Imamura

International Journal of Disaster Risk Reduction ( International Journal of Disaster Risk Reduction )  50   101743 - 101743   2020.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Tsunami damage characteristics and cause-of-death tendency: A case study on the 2011 Tohoku earthquake tsunami in Miyagi Prefecture's municipalities

KAMATA Hirokazu, SETO Shuji, SERIKAWA Tomoki, SUPPASRI Anawat, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  76 ( 2 ) I_379 - I_384   2020.11  [Refereed]

Research paper (journal)   Domestic Co-author

<p> The Great East Japan Earthquake occurred on March 11, 2011. Japan was severely damaged by the disaster and various previous studies have been conducted. Seto and Imamura (2020) analyzed the cause and location of death using information on victims provided by the Miyagi Prefectural Police Headquarters, and showed the trends for each prefecture. In this study, we examined the cause-of-death tendency based on the location of the body in Miyagi Prefecture's municipalities and obtained the following results. The breakdown of each cause of death by municipality in Miyagi Prefecture was clarified. We showed that the trends in causes of death differed greatly between coastal and inland areas. Drowning was related to the estimated daytime exposed population which demonsrates a relationship between inundation ratio and population density for the plain areas. It can be also suggested that death due to fire occurs locally and is related to the total burned area. It is also found that unknown death is related to debris amount in relation to the inundated area. Hypothermia was suggested to be an effect of loss of body temperature due to tsunami exposure.</p>

DOI CiNii Research

Challenge to build the science of human survival from disaster starting from analysis for the 2011 Tohoku Tsunami

Shuji Seto, Fumihiko Imamura, Anawat Suppasri

Journal of Disaster Research ( Journal of Disaster Research )  14 ( 9 ) 1323 - 1328   2019.12  [Refereed]

Research paper (journal)   Domestic Co-author

© 2019, Fuji Technology Press. All rights reserved. The 2011 Tohoku earthquake and tsunami caused the loss of 20,000 lives in Japan. According to the National Police Agency (2012), 90% of deaths in the Iwate, Miyagi, and Fukushima prefectures were due to drowning. On the other hand, this report also showed that the remaining 10% died from circumstances other than drowning, as suggested by the Japanese Society of Legal Medicine (2012). A new solution is needed to propose practical measures against a tsunami. In this paper, the authors suggest the science of human survival from disaster as one of the solutions and illustrate the research design implemented to build it. Constructing the science of human survival shall be important to mitigate human damages in future tsunami disasters.

DOI CiNii Research

RISK RECOGNITION AND EVACUATION BEHAVIOR IN AREAS OUTSIDE THE PREDICTED TSUNAMI HAZARD MAP IN CASE OF THE GREAT EAST JAPAN EARTHQUAKE

SERIKAWA Tomoki, SUPPASRI Anawat, SETO Shuji, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  75 ( 2 ) I_1363 - I_1368   2019.10  [Refereed]

Research paper (journal)   Domestic Co-author

<p> It is necessary to evaluate tsunami hazard maps created before the 2011 Great East Japan earthquake to mitigate human casualty in case of overestimated tsunami disaster. Servicing and utilizing condition of the hazard maps in Miyagi Prefecture at the time of the 2011 tsunami was investigated. Moreover, people's recognition of the hazard map and their evacuation behavior in areas outside the predicted tsunami hazard map was also considered. As a result of the analysis using the data of temporal response for tsunami, it is found that correlation between recognition of the hazard map and evacuation behavior is not significant. Nevertheless, correlation between recognition of hazard map and tsunami risk recognition is significant. In addition, problems regarding evacuation behavior in each study areas were also revealed. In Kesennuma City, disaster image fixation occurred as peoples were stick to the predicted tsunami inundation limit shown in the hazard map. In Ishinomaki City, conceiving of evacuation behavior for tsunami and evacuation behavior was not well connected. From these results, it is important to develop multi-scenario hazard map which considered uncertainties of external forces to improve understanding of hazard maps.</p>

DOI CiNii Research

POTENTIAL IMPACT OF TSUNAMI-INDUCED SEDIMENT TRANSPORT IN KOCHI PREFECTURE CAUSED BY THE NANKAI TROUGH MEGATHRUST EARTHQUAKE

YAMASHITA Kei, SUGAWARA Daisuke, SETO Shuji, ARIKAWA Taro, TAKAHASHI Tomoyuki, IMAMURA Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  75 ( 2 ) I_685 - I_690   2019.10  [Refereed]

Research paper (journal)   Domestic Co-author

<p> In order to evaluate coastal geomorphic changes and potential impacts of tsunami-induced sediment transport in Kochi Prefecture caused by the Nankai Trough megathrust earthquake, numerical simulations of sediment transport over a wide area of Tosa Bay have been performed. The regional features of potential impact was provided. The tsunami-induced sediment transport can cause not only large-scale erosion and sedimentation around the coastal zone but also increase in tsunami hazards. Note that the influences depend significantly on uncertainties in bed materials, i.e. grain sizes and distributions of erodible/noerodible surfaces. The uncertainties in the simulations will be improved through acquisition of detailed sedimentary data. Further discussions considering the regional characteristics of tsunami-induced sediment transport will provide the resilient countermeasures to tsunami disaster.</p>

DOI CiNii Research

ESTIMATION OF THE WAVE PEAK OF TSUNAMI BY USING A SINGLE OCEANOGRAPHIC RADAR AND ITS APPLICATION

SETO Shuji, TAKAHASHI Tomoyuki, HINATA Hirofumi, FUJI Ryotaro, Imamura Fumihiko

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  74 ( 2 ) I_511 - I_516   2018.11  [Refereed]

Research paper (journal)   Domestic Co-author

&nbsp;In the 2011 Tohoku earthquake tsunami disaster, the oceanographic radars installed at the coastal area of Japan and USA observed the tsunami, which proved the possibility for tsunami observation by using oceanographic radar. After the Tohoku tsunami, studies by using oceanographic radar were reported, but the research topics were mainly on tsunami observation and detection. Quantitative evaluations such as the estimation of wave peak is important in order that oceanographic radar contributes to tsunami disaster prevention and mitigation. In this study, the method to estimate a wave peak of tsunami by using a single oceanographic radar was examined and applied for a tsunami scenario in the Nankai Trough. The tsunami numerical modeling for the tsunami source of <i>M</i>w9.1 and 8.6 in the Nankai Trough was carried out and gave radial velocity distributions to be observed by oceanographic radar. The wave peak was estimated by using the radial velocity distribution and was compared with the wave peak calculated by the outputted water distribution. As a result, the location of the wave peak is estimated well. And the water level of the wave peak is estimated with an error range of -20% to 10%.

DOI CiNii Research

Real-time tsunami detection with oceanographic radar based on virtual tsunami observation experiments

Kohei Ogata, Shuji Seto, Ryotaro Fuji, Tomoyuki Takahashi, Hirofumi Hinata

Remote Sensing ( Remote Sensing )  10 ( 7 )   2018.07  [Refereed]

Research paper (journal)   Domestic Co-author

© 2018 by the authors. The tsunami generated by the 2011 Tohoku-Oki earthquake was the first time that the velocity fields of a tsunami were measured by using high-frequency oceanographic radar (HF radar) and since then, the development of HF radar systems for tsunami detection has progressed. Here, a real-time tsunami detection method was developed, based on virtual tsunami observation experiments proposed by Fuji et al. In the experiments, we used actual signals received in February 2014 by the Nagano Japan Radio Co., Ltd. radar system installed on the Mihama coast and simulated tsunami velocities induced by the Nankai Trough earthquake. The tsunami was detected based on the temporal change in the cross-correlation of radial velocities between two observation points. Performance of the method was statistically evaluated referring to Fuji and Hinata. Statistical analysis of the detection probability was performed using 590 scenarios. The maximum detection probability was 15% at 4 min after tsunami occurrence and increased to 80% at 7 min, which corresponds to 9 min before tsunami arrival at the coast. The 80% detection probability line located 3 km behind the tsunami wavefront proceeded to the coast as the tsunami propagated to the coast. To obtain a comprehensive understanding of the tsunami detection probability of the radar system, virtual tsunami observation experiments are required for other seasons in 2014, when the sea surface state was different from that in February, and for other earthquakes.

DOI

ESTIMATION OF THE CHARACTERIZED TSUNAMI SOURCE MODEL BY USING GPS BUOYS AND ITS APPLICATION

SETO Shuji, TAKAHASHI Tomoyuki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) ( Japan Society of Civil Engineers )  73 ( 2 ) I_307 - I_312   2017.10  [Refereed]

Research paper (journal)   Domestic Co-author

&nbsp;In the 2011 Tohoku earthquake tsunami disaster, the delay of understanding damage situation increased the human damage. To solve this problem, it is important to search the severe damaged areas. The tsunami numerical modeling is useful to estimate damages and the accuracy of simulation depends on the tsunami source.<br>&nbsp;In this study, we proposed the new method to estimate the characterized tsunami source model by using the limited observed data of GPS buoys. The model consists of Large slip zone (LSZ), Super large slip zone (SLSZ) and background rupture zone (BZ) as the Cabinet Office, Government of Japan^{10), 11)} reported after the Tohoku tsunami.<br>&nbsp;At the beginning of this method, the rectangular fault model is assumed based on the seismic magnitude and hypocenter reported right after an earthquake. By using the fault model, tsunami propagation is simulated numerically, and the fault model is improved after comparing the computed data with the observed data repeatedly. In the comparison, correlation coefficient and regression coefficient are used as indexes. They are calculated with the observed and the computed tsunami wave profiles. This repetition is conducted to get the two coefficients close to 1.0, which makes the precise of the fault model higher. The proposed method by using GPS buoy was applied for a tsunami scenario in the Nankai Trough. As a result, the final estimated Moment magnitude (<i>M</i>w) and the location of LSZ and SLSZ are estimated well.

DOI CiNii Research