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所属 |
工学教育研究部 工学科土木環境工学プログラム担当 |
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職名 |
教授 |
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学歴 【 表示 ／ 非表示 】
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東京工業大学 総合理工学研究科 環境物理工学
- 2000年3月
国名：日本国
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東京工業大学 工学部 土木工学科
- 1995年3月
国名：日本国
論文 【 表示 ／ 非表示 】
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Irie M., Arakaki S., Suto T., Umino T.
Remote Sensing 16 ( 1 ) 2024年1月
担当区分：筆頭著者, 責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Remote Sensing
Riverbed materials serve multiple environmental functions as a habitat for aquatic invertebrates and fish. At the same time, the particle size of the bed material reflects the tractive force of the flow regime in a flood and provides useful information for flood control. The traditional riverbed particle size surveys, such as sieving, require time and labor to investigate riverbed materials. The authors of this study have proposed a method to classify aerial images taken by unmanned aerial vehicles (UAVs) using convolutional neural networks (CNNs). Our previous study showed that terrestrial riverbed materials could be classified with high accuracy. In this study, we attempted to classify riverbed materials of terrestrial and underwater samples including that which is distributed in shallow waters where the bottom can be seen using UAVs over the river segment. It was considered that the surface flow types taken overlapping the riverbed material on images disturb the accuracy of classification. By including photographs of various surface flow conditions in the training data, the classification focusing on the patterns of riverbed materials could be achieved. The total accuracy reached 90.3%. Moreover, the proposed method was applied to the river segments to determine the distribution of the particle size. In parallel, the microtopography was surveyed using a LiDAR UAV, and the relationship between the microtopography and particle size distribution was discussed. In the steep section, coarse particles were distributed and formed riffles. Fine particles were deposited on the upstream side of those riffles, where the slope had become gentler due to the dammed part. The good concordance between the microtopographical trends and the grain size distribution supports the validity of this method.
DOI： 10.3390/rs16010173
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Irie M., Nakagawa A., Higashi T.
Water (Switzerland) 15 ( 18 ) 2023年9月
担当区分：筆頭著者, 責任著者 掲載種別：研究論文（学術雑誌） 出版者・発行元：Water (Switzerland)
In the uppermost stream of the Mimikawa River, in northern Miyazaki Prefecture, the contribution to river turbidity of a huge, collapsed slope alternating sandstone and mudstone layers was qualitatively shown in our previous study. In this study, the water level and turbidity were continuously observed, to obtain a quantitative estimation of this contribution. The conversion equation from the water level to the flow rate is required, but field measurements during the flooding term in the mountainous site are difficult. In this study, a high-resolution survey was conducted, and the relationship was determined via a small-scale hydraulic model shaped using a 3D printer from the survey results, to determine the relationship between the water level and the flow rate. The flow rate time series was reproduced with the distributed runoff model that is verified with the flow rate converted from the water level. The flow rate and turbidity load time series were also estimated from the long-term rainfall. The area of the bare soil surface of each small basin was obtained via satellite image analysis, and the soil yield from each surface condition was calculated. Furthermore, the amount of turbidity produced upstream of Kamishiiba Dam was calculated for each small basin. It was estimated that 24% of the turbidity was generated from the small basin covering 5.7% of the total catchment area. This study showed that it is possible to verify the hydrological model by obtaining the water-level–discharge relationship, even in the mountains, where it is difficult to observe the discharge on-site, via small-scale hydraulic model experiments.
DOI： 10.3390/w15183186
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Ito K., Matsunaga M., Itakiyo T., Oishi H., Nukazawa K., Irie M., Suzuki Y.
International Journal of Sediment Research 38 ( 3 ) 469 - 480 2023年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：International Journal of Sediment Research
Sediment causes a serious problem in relation to dam function. A cooperative sediment sluicing operation has been under way since 2017 to prevent sediment from accumulating in dams in the Mimi River, Miyazaki, Japan. To achieve a smooth and stable operation, it is very important to determine the sediment source and a sediment transport system to maintain the dam's function. In the current study, the source and transport of sediment from the Mimi River basin have been analyzed with X-ray diffraction (XRD) to reveal the peaks of mineral species. The sediment samples were collected in the Mimi River basin from the Tsukabaru Dam to the sea in an area including 4 dams and 5 tributaries. In addition, the minerals in samples collected in 2014, before the start of the sediment sluicing operation, and from 2018 to 2020, after the start of the operation, were analyzed. An evaluation of the similarity of the sediment at each sampling point based on the X-ray diffraction peaks of mineral species showed that sediment distributed upstream was transported downstream in the year when the sediment sluicing was done. This result indicates that the sediment sluicing operation at dams ensured the continuity of the sediment distribution in the Mimi River basin. In addition, an investigation done in 2020 showed that sediment particles very similar to those of the upstream tributaries were deposited downstream because of extensive flooding caused by a large typhoon. The management of sediment transport has the greatest importance in a river basin where a dam is to be constructed. It is possible to trace the history of the sediment distribution and movement resulting from the operation of sediment sluicing by using sediment mineral analysis.
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Prediction of the discharge in Pech River for the flood warning system, based on the time series of snow cover area and meteorological data 査読あり
HOSSAINI Hossaini Mir Mohammad Mones, IRIE Mitsuteru
Journal of Arid Land Studies 32 ( 3 ) 93 - 93 2022年12月
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：日本沙漠学会
Floods in the arid areas provide fertile soil and water resources, enabling agricultural production. Based on its productivity, towns with a large population have developed along the riverbanks. On the other hand, large flood beyond the expectation will cause enormous human and economic damage. The Pech River, our study site, is a tributary of the Kunar River, which runs through eastern Afghanistan. The catchment area of the river is populated by 35.5% of the population and has 21% of the agricultural land of Kunar province.The main source of the river discharge is melted snow in the upper mountainous areas, and the maximum discharge that appears in the following spring changes depending on the amount of snowfall in the previous winter. In the year of heavy snowfall in the upper mountainous areas, the residential areas and the agricultural lands along the river experienced severe inundation.Therefore, it is necessary to predict the peak discharge in spring in advance and provide appropriate flood warnings so that the local residents can take evacuation and damage mitigation measures. In this study, we tried to develop a method for predicting the peak discharge based on the fluctuation of snow cover area evaluated with satellite images, temperature, and rainfall of the upper reaches of the Pech River.First, the boundary of the river catchment was identified based on the DEM of 30 m mesh acquired by Advanced Land Observing Satellite (ALOS). Next, the Snow cover distribution data between 2008 and 2018 at weekly intervals was downloaded from the National Snow & Ice Data Center (NSIDC) database, and the catchment area was extracted. Daily temperature and precipitation data at the station nearby the catchment stored in the database of National Oceanic and Atmospheric Administration (NOAA) were expected as the parameter explaining the snow melting process in spring.We tried to reproduce the discharge of the Pech River using these explanatory variables related to the process of snowfall and snowmelt with some statistical and stochastic methods. The multi-regression analysis and Neural Network were examined to reproduce the discharge fluctuation of Pech River.
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Estimating the impact of rainwater harvesting system installation on floods using hydrological models Case study: Nyabugogo valley, Kigali 査読あり
ALINE Uwineza, IRIE Mitsuteru
Journal of Arid Land Studies 32 ( 3 ) 92 - 92 2022年12月
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：日本沙漠学会
Rwanda, a landlocked country located in East Africa, is under the temperate climate due to the high altitude though near to the equator. 5.3% of the territory is covered by water bodies, lakes, and rivers. Both rainy and dry season come twice a year with frequent inundations and water shortage. Kigali, the capital city, and the most populated city in the country, is affected by floods during rainy season. Nyabugogo valley, the downtown of the capital is the typical affected area with devastating damage. The mitigation measures such as widening Mpazi drainage channel were taken by the government based on a number of researches. However, the inundation still occurs every year. This research aims to propose rainwater harvesting (RWH) that can supply water to each household, as a mitigation measure to floods. In order to assess the effect of RWH installation on the flood control, Runoff modeling and simulation of Flood inundation was carried out.Nyabugogo river catchment area, delineated using DEM, is 1663.95 km<sup>2</sup>. The dominant land cover is forest (65%) and crop land (22%). Run-off from the upper catchment area was simulated using SWAT model with input data of elevation, soil, and land use data. The simulation was done for 3 years 2011-2013 and calibrated using SWAT CUP.IRIC Nays2Dflood Model was used to simulate and visualize the flooded area with the input data of the discharge simulated by the above modeling and water level at downstream of the flooded area for the flood event reported on March 2<sup>nd</sup> and 3<sup>rd</sup> 2020. The boundary conditions were set along the river, with two inflow points: Nyabugogo river and Mpazi outlet. The maximum water depth and the maximum velocity were observed at the confluence of the two streams; and flood extended throughout the valley. The accuracy of the simulation was checked by comparison with the sentinel2 satellite images.The RWH system installation will be simulated and its hydrological impact on flood will be assessed as the final outcome of this research. Rainwater harvesting system installation, additionally to reducing flood mitigation, can contribute to improvement of the population’s health and sanitation, which aligns with the SDGs. Knowing the extent at which RWH can reduce flood, will open to further studies on design and cost analysis of the system.
書籍等出版物 【 表示 ／ 非表示 】
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ISSUE OF SURFACE WATER RESOURCES AND ALTERNATIVE SOLUTIONS
Irie M., Tarhouni J.（ 担当： 単著）
Encyclopedia of Africa: Volume 11: (11 Volume Set) 2020年1月 （ ISBN:9781536172348 ）
著書種別：学術書
Surface water resources in Tunisia, which cover half of the water supply of this country, have problems such as environmental impact, flooding and reduction of sustainability due to sedimentation. These issues must be controlled with careful management with the understanding of the phenomena in the field in detail. What happened in the fields is changed depending on the condition of each environment. In addition to the technical discussion, implementation and spread of the technology to society should be carried out with the quantitative evaluation of its benefits to enlighten the society. This chapter introduces the situation of the surface water resources in Tunisia, what is the problem, the reasons for it and alternatives of practical solutions, including the point of view of economical feasibility, etc.
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RESEARCH AND EDUCATION ACTIVITIES IN ARENA
Kawachi A., Morio T., Irie M., Iwasaki M., Kashiwagi K., Isoda H.（ 担当： 単著）
Encyclopedia of Africa: Volume 11: (11 Volume Set) 2020年1月 （ ISBN:9781536172348 ）
著書種別：学術書
After its foundation, ARENA has rapidly extended its research and education activities in interdisciplinary approach involving life sciences, energy and environment, humanities and social sciences, and ICT and innovation. In this chapter, we describe the outline of development and expansion of research and educational activities of ARENA, focusing on 2007 to 2013. The research projects, starting from exploration of bioresources, have developed to comprehensive and interdisciplinary research based on exploration of bio-, water- and energy resources considering local cultural context of Islamic world and contribution to regional development through establishment of a framework of innovation. For education, mutual student exchange is extending beyond North Africa involving Europe and Middle East.
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Resource-Oriented Agro-sanitation Systems
1) Sintawardani N., Ushijima K., Hamidah U., Deguchi Y. Triastuti J., Funamizu N., Irie M., Ishikawa T.（ 担当： 共著）
Springer 2019年
記述言語：日本語 著書種別：学術書
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Sustainable North African Society -Exploring Seeds and Resources for Innovation-
Isoda H., Neves M. Kawachi A.（ 担当： 共著）
Nova Publisher 2015年1月
記述言語：英語 著書種別：学術書
MISC 【 表示 ／ 非表示 】
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セラミックスが実現 する途上国の水環境 問題：水処理技術か ら水資源管理まで
袋布昌幹・入江光輝
セラミックス 53 ( 2 ) 66 - 69 2018年2月
記述言語：日本語 掲載種別：記事・総説・解説・論説等（学術雑誌）
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筑波大学北アフリカ研究センターでの学際的研究の取り組み
入江光輝，柏木健一，礒田博子
沙漠研究 23 ( 3 ) 147 - 150 2013年12月
記述言語：日本語 掲載種別：記事・総説・解説・論説等（学術雑誌） 出版者・発行元：日本沙漠学会
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バイオ燃料事業の実施上の課題‐事業採算性と二酸化炭素排出削減に関するレビュー‐
入江光輝
沙漠研究 21 ( 3 ) 99 - 102 2011年12月
記述言語：日本語 掲載種別：記事・総説・解説・論説等（学術雑誌） 出版者・発行元：日本沙漠学会
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チュニジアの水資源とその循環利用
安部征雄，礒田博子
沙漠研究 18 ( 3 ) 171 - 175 2009年12月
記述言語：日本語 掲載種別：記事・総説・解説・論説等（学術雑誌） 出版者・発行元：日本沙漠学会
講演・口頭発表等 【 表示 ／ 非表示 】
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クロロフィル-a濃度推定に用いるUAV空撮画像の日射強度に基づく輝度値補正
眞邊雄元 ・ 山下正文 ・ 入江光輝
令和4年度土木学会度西部支部研究発表会講演概要集 2023年3月
開催年月日： 2023年3月4日
記述言語：日本語 会議種別：口頭発表（一般）
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UAV空撮画像に基づく機械学習を用いたChl-a濃度推定
山下正文 ・ 眞鍋雄元 ・ 入江光輝
令和4年度土木学会度西部支部研究発表会講演概要集 2023年3月
開催年月日： 2023年3月4日
会議種別：口頭発表（一般）
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山間部小流域における濁質負荷計測の精度向上の試み
中川敦貴 ・ 入江光輝
令和4年度土木学会度西部支部研究発表会講演概要集 2023年3月
開催年月日： 2023年3月4日
会議種別：口頭発表（一般）
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UAV空撮画像の判別による台風出水前後の土砂移動評価
周藤智規 ・ 入江光輝
令和4年度土木学会度西部支部研究発表会講演概要集 2023年3月
開催年月日： 2023年3月4日
会議種別：口頭発表（一般）
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世界遺産イシュケウルにおける水収支の推定
小手川洋俊,入江光輝
令和2年度土木学会度西部支部研究発表会講演概要集 2021年3月
開催年月日： 2021年3月5日
会議種別：口頭発表（一般）
科研費（文科省・学振・厚労省）獲得実績 【 表示 ／ 非表示 】
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健全な流砂系の回復によるサステナブル流域総合土砂管理の実証研究
2017年04月 - 2020年03月
科学研究費補助金 基盤研究(B)
担当区分：研究分担者
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食料増産に向けた大河川の農地氾濫制御事業評価のための新たな便益評価基準の検討
2016年08月 - 2019年03月
科学研究費補助金 基盤研究(B)
担当区分：研究代表者
大陸大河川の治水事業が速やかに実施できるよう、費用便益評価の基準について再考を行う。ケーススタディサイトとしてセネガル川下流部のモーリタニア国側氾濫域を対象とする。
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世界遺産イシュケウルの物質サイクルを活用した持続可能な環境復元・管理技術の提案
2015年04月 - 2019年03月
科学研究費補助金 基盤研究(A)
担当区分：研究分担者
侵食傾向にある湿地の底泥を安定化し、塩水侵入を制御する
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サハラ砂漠周縁の水資源に関わる2大問題解決に向けた調査研究
2013年10月 - 2017年03月
科学研究費補助金 基盤研究(A)
担当区分：研究代表者
乾燥地貯水池の堆砂管理と飲料用地下水の浄化に同時に取り組む
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サハラ砂漠周縁貯水池の持続的利用のための新たな管理・運営手法構築に向けた調査研究
2010年04月 - 2013年03月
科学研究費補助金 基盤研究(B)
堆砂の著しい貯水池の底泥中に含まれる腐植物質の有効利用等について検討
その他競争的資金獲得実績 【 表示 ／ 非表示 】
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UAV空撮によるダム湖水質モニタリング手法の開発
2020年07月 - 2021年03月
地方自治体 宮崎『ひと・まち・みらい』 づくりに関する研究・活動等助成
担当区分：研究代表者 資金種別：競争的資金
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林業が主産業である地域における貯水池堆砂を活用した流域保全方法の開発
2020年06月 - 2021年03月
九州地方計画協会 九州地方計画協会公益事業支援
担当区分：研究代表者
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チュニジアとのセミナー 持続可能な水資源管理のためのイノベーション創造
2018年04月 - 2019年03月
文部科学省 二国間交流事業
資金種別：競争的資金
本セミナーでは、水資源、水処理、水環境に関連する異なる分野の研究者がセミナーを通して情報交換を行う。特にチュニジア側の研究者からは現地が抱える水に関わる技術的課題を示すことも期待される。最終的な目標は技術開発に留まらず現地への技術普及を含むため、水資源に関わる持続可能性や社会実装に向けた社会・経済学的な面からの研究もテーマの一つとする。水資源や水環境に関わる研究とは、資源量や保全するべき環境の定量的評価に加えて、現地で水を使用し、排水を行う人々の生活や文化に対する理解も当然求められる。それらに関連した情報を現地側から発信してもらうとともに、現地にて水に関連する研究を行っている社会・経済学分野の日本人研究者も少なからずいるので、単一セッションの中で積極的に発表を行ってもらい、国内研究者の中での学際的異分野融合についても深めていく。
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総合土砂管理による河川生態系への影響の定量的評価手法の開発
2017年04月 - 2019年03月
河川財団 河川基金
担当区分：研究代表者 資金種別：競争的資金
耳川における通砂事業による環境影響評価をケーススタディとする
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モーリタニア・セネガル川付近における農地開発に向けた取り組み―河川氾濫制御と水資源開発と伝統的水源管理慣行
2014年10月 - 2016年05月
民間財団等 トヨタ財団研究助成プログラム
資金種別：競争的資金
セネガル川の氾濫を遊水池により制御し、農地を拡大する可能性について工学的知見と社会学的知見からアプローチ
受託研究受入実績 【 表示 ／ 非表示 】
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小丸川水系渡川ダムの堆積土砂を有効利用した流域土砂生産抑制による新しい総合土砂管理の検討
2021年05月 - 2023年03月
国土交通省 九州地方整備局 宮崎河川国道事務所 一般受託研究 入江 光輝、末次 大輔、福林 良典、関戸 知雄、光田 靖
入江 光輝、末次 大輔、福林 良典、関戸 知雄、光田 靖
担当区分：研究代表者 受託研究区分：一般受託研究