Survey report on damage caused by 2019 Typhoon Hagibis in Marumori Town, Miyagi Prefecture, Japan

Moriguchi, Shuji; Matsugi, Hiroaki; Ochiai, Tatsuya; Yoshikawa, Sakiko; Inagaki, Hideki; Ueno, Shoji; Suzuki, Motoyuki; Tobita, Yoshio; Chida, Tetsuro; Takahashi, Kyoma; Shibayama, Akihiro; Hashimoto, Masakazu; Kyoya, Takashi; Dolojan, Nilo Lemuel J.

doi:10.1016/j.sandf.2021.01.009

Cited by 16 publications

(5 citation statements)

References 8 publications

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“…Previous research indicated that the amount of 137 Cs had strongly decreased in river sediment and in the soil surface in 2019 compared to 2011 [Evrard et al, 2021, Funaki et al, 2019, Iwagami et al, 2017, Yoshimura et al, 2016, which further supports the results obtained in the current study. Typhoon Hagibis caused debris flows that apparently excavated soils from contaminated topsoil layers, and much less contaminated subsurface soils as shown for FS in Miyagi Prefecture [Moriguchi et al, 2021]. Highly contaminated surface soils from forested areas were therefore likely mixed with subsurface soils from landslides and channel bank collapse events, which may consequently explain the overall low total 137 Cs content in FS.…”

Section: Resultsmentioning

confidence: 98%

Impact of radiocesium contamination in flood sediment deposited after the 2019 typhoon on decontaminated fields of Fukushima Prefecture, Japan

Asano¹,

Harada²,

Nakao³

et al. 2022

Comptes Rendus. Géoscience

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Sediment that has deposited after the flood generated by the 2019 typhoon (referred to as Flood Sediment, FS) was collected along two rivers in eastern Fukushima Prefecture, Japan to determine the total and exchangeable radiocesium ( 137 Cs), and acid-extractable potassium (K) contents. Then, these FS parameters were compared with those of decontaminated soils (DS) in nearby agricultural fields to discuss the potential transfer risk of 137 Cs from rivers to nearby remediated soils. While FS had about four times higher total 137 Cs content, it showed a three-times lower exchangeable 137 Cs content than DS. Furthermore, acid-extractable K referred to as non-exchangeable K (Nex-K) content was high enough to restrict 137 Cs transfer from soil to crops for both FS and DS. From these comparisons, we concluded that deposition of FS onto DS may not increase the transfer of 137 Cs from soil to crops.

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Section: Resultsmentioning

confidence: 98%

Impact of radiocesium contamination in flood sediment deposited after the 2019 typhoon on decontaminated fields of Fukushima Prefecture, Japan

Asano¹,

Harada²,

Nakao³

et al. 2022

Comptes Rendus. Géoscience

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“…Furthermore, if flood infrastructure does not have sufficient capacity, this can lead to damage to public health due to flooding. As shown by multiple disasters, including the Great North Sea Floods and Typhoon Hagibis, flood defence breaches can result in mortality and injuries [20,21]. In the aftermath of Hurricane Katrina, neighbourhoods where levees were breached, and drainage systems failed, had the highest mortality [5].…”

Section: Pathway 2: Exposure To Floodingmentioning

confidence: 99%

Climate change hazards, physical infrastructure systems, and public health pathways

Ikonomova,

MacAskill

2023

Environ. Res.: Infrastruct. Sustain.

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Climate-related hazards such as heatwaves, flooding, wildfires, and storms will increase morbidity and mortality unless infrastructure decision-makers—including urban planners, infrastructure asset managers, and utility providers—implement preventive measures to protect public health from these hazards. Existing research and policies have not systematically identified the key risk factors that these decision-makers need to manage to protect public health in a changing climate. This gap leads to unclarity regarding what infrastructure interventions are required to prevent climate-related health risks and what actors have a responsibility to manage these risks. The Climate-Health-Infrastructure- Pathways Model is introduced in this paper to address this gap and provide a conceptual map that captures the role of physical infrastructure systems in the pathways between climate-related hazards and health risks. The model surpasses what can be found in existing climate change research and policy, including the latest IPCC reporting, and is a conceptual qualitative tool that offers a typology of climate and health risks for infrastructure management. Decision-makers can use the model as a starting point to review the coverage of their current climate risk management plans and identify further opportunities to develop preventive infrastructure responses to protect public health in a changing climate.

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“…The Abukuma River basin is situated in the Tohoku region of Japan. This is the second-longest river in this basin region, which runs through several prefectures [29]. The area of the river basin is 5400 km 2 according to the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), and the main river channel is 239 km in length.…”

Section: Study Areamentioning

confidence: 99%

Impact of Paddy Field Reservoirs on Flood Management in a Large River Basin of Japan

et al. 2023

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The flood retention capacity of paddy fields is well-recognized in Japan, and all the existing flood control practices via paddy field management achieve reductions in peak flood discharge. However, the previous studies have not assessed the flood management potential of paddy fields in a large river basin with average paddy coverage, and the existing hydrological models are not quite suitable for simulating river discharge from closed-drainage paddy reservoir storage. We herein attempt to improve the watershed-scale version of global hydrological model H08 to simulate a reduction in the peak discharge from paddy reservoirs in the Abukuma River basin of Japan. The NSE and R2 index showed fair reliability of the H08 model during the calibration and validation stages. The simulated results from the improved model show 11% and 6% peak reductions in high paddy coverage areas for a normal year (2018) and a major typhoon year (2019), respectively. The peak-reduction percentage increased with decreasing rainfall, depending on the overflow from the paddy reservoirs. The results indicate that the paddy reservoir is not highly effective in a large river with less than 20% paddy coverage, but the peak discharge reduction capacity shows that paddy reservoirs can make some contribution when used in combination with dam operation.

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Survey report on damage caused by 2019 Typhoon Hagibis in Marumori Town, Miyagi Prefecture, Japan

Cited by 16 publications

References 8 publications

Impact of radiocesium contamination in flood sediment deposited after the 2019 typhoon on decontaminated fields of Fukushima Prefecture, Japan

Impact of radiocesium contamination in flood sediment deposited after the 2019 typhoon on decontaminated fields of Fukushima Prefecture, Japan

Climate change hazards, physical infrastructure systems, and public health pathways

Impact of Paddy Field Reservoirs on Flood Management in a Large River Basin of Japan

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