九州大学 研究者情報
発表一覧
広城 吉成(ひろしろ よしなり) データ更新日:2022.04.28

准教授 /  工学研究院 環境社会部門 水・資源循環システム学


学会発表等
1. 陶山浩矢奈木野竜也大石秀人広城吉成, 室内試験によるバリア井戸設置位置と水位差変動が塩水侵入挙動に及ぼす影響評価, 土木学会西部支部講演会, 2021.03.
2. 石井隆滉,西山浩司,清野聡子,広城吉成, 郷土史料に基づく嘉永三年(1850年)の糸島豪雨災害の特徴, 土木学会西部支部講演会, 2021.03.
3. 藤田優矢、大石秀人、@広城吉成, 室内試験によるバリア井戸設置時の塩水侵入の挙動に関する考察, 土木学会西部支部講演会, 2020.03.
4. #川端健太、@広城吉成, 改正水道法に関する新聞報道の定量調査と広域化・官民連携の現状に関する研究, 土木学会西部支部研究発表会, 2020.03.
5. #増田大起、@清野聡子、@広城吉成、@永冶克行、@遠藤和敏, 長崎県五島列島福江島富江半島における溶岩地質が及ぼす地域水循環の一考察
, 土木学会西部支部研究発表会, 2020.03.
6. E. D.P. Perera, K. Jinno, A. Tsutsumi, Y. Hiroshiro, Three dimensional solute transport numerical modeling of salinity fluctuations in a coastal aquifer, 18th World IMACS Congress and International Congress on Modelling and Simulation: Interfacing Modelling and Simulation with Mathematical and Computational Sciences, MODSIM 2009, 2020, Over-exploitation of groundwater in coastal aquifers is one of the major reasons for saltwater intrusion. Saltwater intrusion contaminates the freshwater resource in coastal aquifers by increasing the salinity levels of the groundwater. A small quantity of saltwater is enough to contaminate the large quantity of freshwater in a coastal aquifer. Therefore, saltwater intrusion should be considered seriously. Numerical models are needed to enhance the understanding of saltwater intrusion and its related phenomena extensively. The Motooka region in the Fukuoka prefecture in Japan is a coastal area, where groundwater is the main water resource for green house agriculture and domestic use. Over-exploitation of groundwater in this coastal region has resulted in saltwater intrusion and thus in the contamination of the freshwater aquifer. In addition to the more obvious effects of saltwater intrusion, fluctuations in salinity caused by such intrusion is a crucial problem to address, since even slight changes in salinity of the water use for agricultural purposes significantly affect the crop's growth and yield. So far, a research on the salinity fluctuations with groundwater pumping and their effects on seasonal recharge of groundwater in the Motooka region has not been conducted. Therefore, in this study a three-dimensional density-dependent solute transport flow model is developed to simulate the salinity fluctuations due to groundwater pumping. In the present numerical study, the emphasis is on the development of conceptual, mathematical and numerical model of variable density flow and solute transport and its application to simulate the salinity fluctuation due to groundwater pumping at different rates. The model is based on the “transition zone” approach, which considers the interface as a miscible zone where freshwater and saltwater is mixing while maintaining a density gradient across the freshwater/saltwater interface. The transition zone approach requires simultaneous solutions of the governing water flow and solute transport equations. To this end, the model incorporates three fundamental equations in flow and solute transport, namely Darcy's law, general groundwater flow equation and the advection dispersion solute transport equation. The groundwater flow equation and solute transport equation are coupled by the equation of state to produce the salt concentration at each time step for whole flow domain. The finite difference method is used as the numerical technique to solve the partial differential equations of flow and transport under an implicit scheme. The method of characteristics is applied to solve the advection term in the solute transport equation. A non-uniform discretized grid system is adopted in the flow domain allocating relatively small grid sizes to pumping well locations. To achieve reliable results, relevant and important hydro-geological parameters are assigned to the numerical model after considering the hydrological situation of the Motooka region. Different boundary conditions are assigned considering the dominant hydrological processes those are believed to be in effect in the selected area. The numerical results obtained from the model demonstrate the salinity variation due to groundwater pumping and seasonal recharge rates from year 2001 to 2007 under the influence of saltwater intrusion. The results also reveal that model is capable of correctly simulating the physical processes. A comparison of the measured and modeled electric conductivities shows reasonable agreement..
7. 羽根幸司・並川正・森川誠司・伊藤圭二郎・森康二・広城吉成, クロムの酸化還元・吸着特性に着目したカラム試験系の再現解析, 第25回 地下水・土壌汚染とその防止対策に関する研究集会, 2019.10.
8. 小出俊輔,広城吉成 , 九州大学伊都キャンパス周辺における地下水温の変動特性
, 土木学会西部支部研究発表会, 2019.03.
9. 奈木野竜也,広城吉成 , レバノンMtein村における水循環機構の推定
, 土木学会西部支部研究発表会, 2019.03.
10. 武藤圭誠,広城吉成 , 地下水湧出に伴う今津干潟北東部からの栄養塩負荷量の推定, 土木学会西部支部研究発表会, 2019.03.
11. 広城吉成、井辺弘貴, 浄水過程におけるイオン状シリカ共存下におけるPAC凝集効果の検証実験, 日本水環境学会第53回年会講演会, 2019.03.
12. 尾崎慎一,広城吉成,木下詔彦,堤 敦 , キャンパス移転に伴う水循環系の変化に対する雨水浸透施設の効果, 土木学会西部支部研究発表会, 2018.03.
13. 藤本ひかる,西山浩司,広城吉成,井浦憲剛 , 古記録「壊山物語」に基づく享保5年土石流災害の記録の抽出と地域防災学習への適用, 土木学会西部支部研究発表会, 2018.03.
14. 西山浩司,広城吉成,脇水健次,鈴木素之, 古文書資料を用いた福岡県朝倉地方における過去の豪雨災害記録の抽出, 自然災害研究協議会西部地区部会研究発表会, 2018.02.
15. 西山浩司,広城吉成,脇水健次、細井浩志、上山裕太 , 古文書編纂資料に基づく福岡県耳納山地域の土石流災害の抽出, 土木学会第72回年次学術講演会概要集(CD-ROM), 2017.09.
16. 広城 吉成, 井辺 弘貴, 森山 晃, イオン状シリカ共存下におけるPAC効果の検証実験, 土木学会西部支部, 2017.03.
17. 広城 吉成, 木下 詔彦, 堤 敦, 松本 大毅, 大原川 中流域 における における 表流水 表流水 -地下水系の循環解析 地下水系の循環解析 地下水系の循環解析, 土木学会西部支部, 2017.03.
18. 広城 吉成, 小西 啓介, 寺嶋 健人, 堤 敦, Quantitative Analysis of Nutrient Inflow from River and Groundwater to Imazu Bay in Fukuoka, Japan, ICEWRM 2016:18th International Conference on Environment and Water Resource Management, 2016.05, Imazu Bay plays an important role for endangered species such as horseshoe crabs and black-faced spoonbills that stay in the bay for spawning or passing the winter. However, this bay is semi-enclosed with slow water exchange, which could lead to eutrophication under the condition of excess nutrient inflow to the bay. Therefore, quantification of nutrient inflow is of great importance. Generally, analysis of nutrient inflow to bays takes into consideration nutrient inflow from only river, but that from groundwater should not be ignored for more accurate results.
The main objective of this study is to estimate amounts of nutrient inflow from river and groundwater to Imazu Bay by analyzing water budget in Zuibaiji River Basin and loads of T-N, T-P, NO3-N and NH4-N. The water budget computation in the basin is performed using groundwater recharge model and quasi three-dimensional two-phase groundwater flow model, and the multiplication of the measured amount of nutrient inflow with the computed discharge gives the total amount of nutrient inflow to the bay. In addition, in order to evaluate nutrient inflow to the bay, the result is compared with nutrient inflow from geologically similar river basins.
The result shows that the discharge is 3.50×107 m3/year from the river and 1.04×107 m3/year from groundwater. The submarine groundwater discharge accounts for approximately 23% of the total discharge, which is large compared to the other river basins. It is also revealed that the total nutrient inflow is not particularly large. The sum of NO3-N and NH4-N loadings from groundwater is less than 10% of that from the river because of denitrification in groundwater. Shin Seibu Sewage Treatment Plant located below the observation points discharges treated water of 15,400 m3/day and plans to increase it. However, the loads of T-N and T-P from the treatment plant are 3.9 mg/L and 0.19 mg/L, so that it does not contribute a lot to eutrophication.
.
19. 広城 吉成, 重松 藍, 森山 晃, 八坂川のヒ素,鉄,アルミニウム及び溶存態ケイ素に着目した水質変動特性, 土木学会西部支部, 2016.03.
20. 広城 吉成, 上原 望, 福岡県西方沖地震による地下水位の変動特性, 土木学会西部支部, 2016.03.
21. 広城 吉成, 加藤ひとみ, 新規地下水取水による周辺地下水への影響評価, 土木学会西部支部, 2016.03.
22. 広城 吉成, 森田 祐輝, 浄水汚泥のヒ素除去性能に関する基礎的実験, 日本地下水学会, 2015.10.
23. 広城 吉成, 森田 祐輝, 今津干潟への河川および地下水による栄養塩流入負荷量の定量的評価, 水文・水資源学会, 2015.09.
24. 広城 吉成, 森田 祐輝, 筑後川上流域の代表的湧水・水源の水質形成機構についての考察, 日本地下水学会, 2015.05.
25. 広城 吉成, 森田祐輝, 筑後川水源の地質学的水質特性評価, 土木学会西部支部, 2015.03.
26. 広城 吉成, 小西啓介, 伊都キャンパス周辺における地下水揚水量推定と地下水塩水化に関する評価, 土木学会西部支部, 2014.03.
27. 広城 吉成, 坂本達俊, 九州大学伊都キャンパスにおける地下水涵養量に関する評価, 土木学会西部支部, 2014.03.
28. 広城 吉成, 三浦聖二, 砂によるヒ素除去効果について, 日本地下水学会, 2013.10.
29. 広城 吉成, 寺嶋健人, 福岡市西部の瑞梅寺川流域における水循環機構, 日本地下水学会, 2013.10.
30. 寺嶋健人, 丸山翔太, 広城 吉成, 瑞梅寺川流域における水循環機構の解明, 土木学会西部支部, 2013.03.
31. 三浦聖二, 越智啓太, 広城 吉成, 大石秀人, 砂を用いたヒ素除去実験, 土木学会西部支部, 2013.03.
32. 渡邉佑輔,広城吉成,川上馨詞,越智啓太, 断面2次元場におけるヒ素の動態に関する実験, 土木学会, 2012.03.
33. 越智啓太,広城吉成,安藤利博,川上馨詞, 断面2次元流れにおけるヒ素の動態に関する実験, 土木学会, 2011.03.
34. 丸山翔太,広城吉成,真有翔太, 瑞梅寺川周辺の地下水水質とその水質変換過程の定性的評価, 土木学会, 2011.03.
35. 川上馨詞,安藤利博,田尻竜章,広城吉成,神野健二, 還元・酸化環境における鉄とヒ素の動態に関する実験, 土木学会, 2010.03.
36. 田村知之,右田義臣,天日美薫,田籠久也,岡村正紀,土方栄示,広城吉成,神野健二, 水に溶出した竹チップ成分の特徴とその水を用いた土壌カラム実験, 土木学会, 2010.03.
37. 広城吉成,横田雅紀, 幸の神湧水と幸川、大原川, 土木学会, 2010.03.
38. E. D.P. Perera, K. Jinno, Yoshinari Hiroshiro, A. Tsutsumi, Evaluation of seawater intrusion to a coastal aquifer by developing a three dimensional numerical model, International Conference on Hydrological Changes and Management from Headwaters to the Ocean, HYDROCHANGE 2008, 2009.12, The Motooka region in Fukuoka, Japan is a coastal region where agriculture is dominant. The green houses and wineries cover their water demand from groundwater. With the increased water demand, seawater intrusion is identified as an alarming threat to the Motooka coastal aquifer in near future. The measured electric conductivities of the water samples have been analyzed periodically. Until now the measured electric conductivities do not show high values but those values convince the emerging threat of seawater intrusion in this aquifer in future if groundwater will be pumped at current rate further. Therefore it is worth to conduct a numerical study of seawater intrusion and its impact to the Motooka area since the sustainability of the aquifer is inevitable for the future groundwater development and agriculture. In this paper a numerical study of the seawater intrusion of the Motooka is discussed. The numerical model presented in this paper was developed by coupling the groundwater flow equation with the mass transport equation to simulate the density dependent solute transport in the three dimensional space. The usage of this model as a management tool to simulate the salinity variation with groundwater pumping is emphasized. The numerical model was adequately capable of simulating the seawater intrusion and numerical results show a satisfactory agreement with the field observations..
39. E. D.P. Perera, K. Jinno, A. Tsutsumi, Y. Hiroshiro, Three dimensional solute transport numerical modeling of salinity fluctuations in a coastal aquifer, 18th World IMACS Congress and International Congress on Modelling and Simulation: Interfacing Modelling and Simulation with Mathematical and Computational Sciences, MODSIM09, 2009.12, Over-exploitation of groundwater in coastal aquifers is one of the major reasons for saltwater intrusion. Saltwater intrusion contaminates the freshwater resource in coastal aquifers by increasing the salinity levels of the groundwater. A small quantity of saltwater is enough to contaminate the large quantity of freshwater in a coastal aquifer. Therefore, saltwater intrusion should be considered seriously. Numerical models are needed to enhance the understanding of saltwater intrusion and its related phenomena extensively. The Motooka region in the Fukuoka prefecture in Japan is a coastal area, where groundwater is the main water resource for green house agriculture and domestic use. Over-exploitation of groundwater in this coastal region has resulted in saltwater intrusion and thus in the contamination of the freshwater aquifer. In addition to the more obvious effects of saltwater intrusion, fluctuations in salinity caused by such intrusion is a crucial problem to address, since even slight changes in salinity of the water use for agricultural purposes significantly affect the crop's growth and yield. So far, a research on the salinity fluctuations with groundwater pumping and their effects on seasonal recharge of groundwater in the Motooka region has not been conducted. Therefore, in this study a three-dimensional density-dependent solute transport flow model is developed to simulate the salinity fluctuations due to groundwater pumping. In the present numerical study, the emphasis is on the development of conceptual, mathematical and numerical model of variable density flow and solute transport and its application to simulate the salinity fluctuation due to groundwater pumping at different rates. The model is based on the "transition zone"approach, which considers the interface as a miscible zone where freshwater and saltwater is mixing while maintaining a density gradient across the freshwater/saltwater interface. The transition zone approach requires simultaneous solutions of the governing water flow and solute transport equations. To this end, the model incorporates three fundamental equations in flow and solute transport, namely Darcy's law, general groundwater flow equation and the advection dispersion solute transport equation. The groundwater flow equation and solute transport equation are coupled by the equation of state to produce the salt concentration at each time step for whole flow domain. The finite difference method is used as the numerical technique to solve the partial differential equations of flow and transport under an implicit scheme. The method of characteristics is applied to solve the advection term in the solute transport equation. A non-uniform discretized grid system is adopted in the flow domain allocating relatively small grid sizes to pumping well locations. To achieve reliable results, relevant and important hydro-geological parameters are assigned to the numerical model after considering the hydrological situation of the Motooka region. Different boundary conditions are assigned considering the dominant hydrological processes those are believed to be in effect in the selected area. The numerical results obtained from the model demonstrate the salinity variation due to groundwater pumping and seasonal recharge rates from year 2001 to 2007 under the influence of saltwater intrusion. The results also reveal that model is capable of correctly simulating the physical processes. A comparison of the measured and modeled electric conductivities shows reasonable agreement..
40. 野村哲裕、堤敦、神野健二、広城吉成 , 糸島半島における水循環機構の解析, 土木学会, 2009.09.
41. M. Katsuki, J. Yasumoto, A. Tsutsumi, Yoshinari Hiroshiro, K. Jinno, Estimation of groundwater discharge to the sea using a distributed recharge model, International Conference on Hydrological Changes and Management from Headwaters to the Ocean, HYDROCHANGE 2008, 2009, Groundwater discharge to sea areas affects environmental conditions along coasts. Enclosed bays may experience eutrophication caused by nutrient input from land areas through groundwater discharge since groundwater is often contaminated by large amounts of nutrients as compared with river water. Therefore, it is necessary to estimate the groundwater discharge into seas quantitatively in order to understand nutrient pathways. A distributed groundwater recharge model was developed in order to estimate total groundwater discharge flow into the Ariake Bay, in Kyushu, Japan. The Komoda catchment within the Kikuchi River basin in Kumamoto prefecture was studied as a representative area for the Ariake Bay. The model partitions rainfall into direct runoff, evapotranspiration, and groundwater recharge. Parameters are set based on land use. Groundwater discharge is calculated using a water balance approach. The results show that groundwater discharge into the Ariake Bay from Kukuchi River basin is on average 123 mm year-1. The groundwater discharge accounts for about 8% of total water discharge and 9% of river discharge. The results can be used to better estimate annual transport of nutrients in the groundwater to the sea and thus also to better manage eutrophication problems..
42. K. Jinno, T. Hosokawa, K. Akagi, Y. Hiroshiro, J. Yasumoto, Geochemical processes and their modelling at the fresh and salt water mixing zone, International Conference on Calibration and Reliability in Groundwater Modelling: Credibility of Modelling, ModelCARE2007, 2008.11, Oxidation-reduction geochemical processes coupled with mass transport in a coastal aquifer is a unique subsurface environmental phenomenon to model. When a porous material is contaminated by organic carbons, nitrate is denitrified and manganese dioxide and oxi-iron hydroxide would be reduced. However, it is expected that the reduced divalent iron is oxidized once again by seawater when discharged to the sea. The paper discusses a numerical model of transport and geochemical reaction processes along the mixing zone of fresh and reduced salt water in a coastal aquifer. By comparing the numerical solution with experimental observations for the precipitation of divalent iron along the mixing zone, the validity of the model is demonstrated..
43. 小田圭太,Halim Md. Abdul,横溝理恵,広城吉成,神野健二, 酸化還元環境の変化と鉄・ヒ素の吸脱着, 地下水学会春季講演会, 2008.05.
44. 田尻竜章,小田圭太,広城吉成,神野健二, 土壌中有機物含量が及ぼす酸化還元状況の変化と鉄-ヒ素の吸脱着との関係, 土木学会西部支部研究発表会, 2008.03.
45. 土方栄示,小田圭太,広城吉成,神野健二, おが屑と水田土壌を用いた下水処理水再利用の可能性について, 土木学会西部支部研究発表会, 2008.03.
46. 末益大嗣,安元 純,高岡秀朋,広城吉成,神野健二, 有明海沿岸域における海底地下水湧出に伴う栄養塩の輸送特性に関する調査研究, 土木学会西部支部研究発表会, 2008.03.
47. 西海能史,安元 純,堤 敦,広城吉成,神野健二, 広域地下水流動モデルを用いた有明海からの地下水流出量の推定, 土木学会西部支部研究発表会, 2008.03.
48. A. Razzak, K. Jinno, M. A. Halim, K. Oda and Y. Hiroshiro, Numerical modeling of arsenic release in groundwater under reducing environment, International Groundwater Quality Conference on Securing Groundwater Quality in Urban and Industrial Environments, 2007.12.
49. 安元 純、堤 敦、甲木 守、長谷川怜思、広城吉成、神野健二, 準3次元地下水流動解析を用いた海域への地下水流出量の推定, 地下水学会秋季講演会, 2007.11.
50. E.D.P PERERA, Kenji JINNO, Yoshinari HIROSHIRO, Atsushi TSUTSUMI, Development of a Three Dimensional Transport Model of Saltwater Intrusion, 地下水学会秋季講演会, 2007.11.
51. Razzak Abdur, Kenji JINNO, Halim M. Abdul, Keita ODA, Yoshinari HIROSHIRO, Numerical Simulation for Predicting Microbial Arsenic Transport in Groundwater under Reducing Environment and a Column Study, 地下水学会秋季講演会, 2007.11.
52. M. A. Halim, K. Oda, A. Razzak, Y. Hiroshiro and K. Jinno, Mobilization of arsenic from soil to water under anaerobic environment and its removal, Mining and the Environment-IV International Conference, 2007.10.
53. 神野健二、細川土佐男、広城吉成、赤木啓悟、安元純, Modelling of geochemical transport along fresh and salt water mixing zone developed in a coastal aquifer, IAH Congress Groundwater and Ecosystem, 2007.09.
54. Othoman Ahmad Alkaeed, Atsushi Tsutsumi, Kenji Jinno and Yoshinari Hiroshiro, Application of a Groundwater Recharge Model for Estimating Surface Runoff Components in Sakurai river Watershed, Fukuoka, Japan, International Association of Hydraulic Engineering & Research, 2007.07.
55. M. A. Halim, K. Oda, A. Razzak, Y. Hiroshiro and K. Jinno, Arsenic Mobilization from Soil to Water under Reducing Environment with Column Experiment, 第13回地下水・土壌汚染とその防止対策に関する研究集会, 2007.06.
56. 安元 純,甲木 守,高岡秀朋,広城吉成,神野健二, 有明海沿岸域での海底地下水湧出に伴う栄養塩の輸送過程, Japan Geoscience Union Meeting, 2007.05.
57. 安元 純,甲木 守,高岡秀朋,広城吉成,神野健二, 有明海沿岸域の海底地下水湧出に伴う栄養塩の輸送過程, 地下水学会春季講演会, 2007.05.
58. 甲木 守,安元 純,堤 敦,広城吉成,神野健二, 分布型地下水涵養モデルを用いた地下水流出量の推定, 地下水学会春季講演会, 2007.05.
59. Othoman Ahmad ALKAEED, Atsushi TSUTSUMI, Kenji JINNO, Yoshinari Hiroshiro, Using the Separation of Rainwater by the Groundwater Model to Estimate Surface Runoff and Groundwater
Infiltration Rate
, International Workshop on Earth Resources Technology, 2007.04.
60. M. A. Halim, K. Oda, A. Razzak, K. Jinno and Y. Hiroshiro, Influence of Geochemical Factors on Arsenic Mobilization in the Soil, International Workshop on Earth Resources Technology, 2007.04.
61. 大部浩貴,堤 敦,広城吉成,神野健二, 九州大学新キャンパスにおける空隙貯留浸透施設の効果的な配置について, 土木学会, 2007.03.
62. 小田圭太,横溝理恵,広城吉成,神野健二, 酸化還元状況下における鉄‐ヒ素の吸脱着について, 土木学会, 2007.03.
63. 安元 純,甲木 守,高岡秀朋,広城吉成,神野健二, 佐賀県太良町大浦沖における海底地下水湧出と栄養塩の輸送に関する調査研究, 土木学会, 2007.03.
64. 甲木 守,安元 純,堤 敦,広城吉成,神野健二, 分布型地下水涵養モデルを用いた地下水流出量の推定, 土木学会, 2007.03.
65. Abdul Halim, Kenji Jinno, Abdur Razzak, Keita Oda, Yoshinari Hiroshiro, Experimental and biogeochemical modeling studies on arsenic release in soil under anaerobic condition, 23rd Annual International Conference on Soils Sediments and Water 2007, 2007, The identification of release mechanisms of arsenic may assist in designing safe and effective remediation strategies, due to its severe toxicity effect for the human body. In this regards, investigations were carried out to observe the release of As from soil into water. It was found that As concentration increased with decreasing oxidation reduction potential. Arsenic concentrations demonstrated negative covariation with the concentrations of NO3 but strongly correlated with DOC and Fe concentrations. Batch leaching tests at different pH conditions showed a strong pH dependence on arsenic and iron leaching. A numerical simulation of arsenic transport model, coupled with microbially mediated biogeochemical processes was developed for describing the release of As in soil under reducing environment. The simulation concentrations of Mn, Fe and As were well matched those found experimentally. The results of this study suggested that the microbially mediated degradation of organic matter and reductive dissolution of Fe-oxyhydroxide are considered to be the dominant processes to release As in aquifers..
66. Jun Yasumoto, Mamoru Katsuki, Hidetomo Takaoka, Yoshinari Hiroshiro, Kenji Jinno, Nutrient inputs through submarine groundwater discharge to Ariake Bay, Kyushu Island, Japan, International Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the International Union of Geodesy and Geophysics (IUGG), 2007, Submarine groundwater discharge (SGD) is now recognized as an important pathway between land and sea. This study attempts to estimate the nutrient inputs through SGD to Ariake Bay. SGD rates and its quality along the coast of Ariake Bay in the Oura Region, Japan, were investigated. It was shown that the on-site SGD rate ranges from 0.01 to 20.52 μm/s, and SGD flows through the shallow confined aquifers, which consist of two kinds of rocks: basalt and pyroclastic rocks. The reduction reaction for SGD proceeded just up to denitrification. SGD associated with nutrient loads of N, P and SiO2 were estimated to be 1.40, 0.07 and 52.78 g m-2 d-1, respectively. This study demonstrates that SGD must be considered as a significant source of nutrient input to the coastal sea area in Ariake Bay..
67. E. D.P. Perera, K. Jinno, A. Tsutsumi, Y. Hiroshiro, Simulation of saltwater intrusion caused electric conductivity fluctuations due to groundwater pumping in a coastal aquifer, International Congress on Modelling and Simulation - Land, Water and Environmental Management: Integrated Systems for Sustainability, MODSIM07, 2007.
68. 安元 純、神野健二、広城吉成、高岡秀朋、松原英隆, 有明海への海底地下水湧出と栄養塩の輸送, 日本地下水学会, 2006.10.
69. 赤木啓悟、神野健二、広城吉成、王  楊、細川土佐男、松原英隆, 有機質土壌中に海水を浸透させた場合の陽イオン交換および酸化還元反応と沈殿過程を考慮した主要イオン輸送解析, 第12回地下水・土壌汚染とその防止対策に関する研究集会, 2006.06.
70. 杉町仁美、岡峰奈津美、神野健二、広城吉成、大嶋雄治、松原英隆, 有機スズおよび硫化物を含む浚渫海底汚泥の陸上汚水処理に関する研究, 第12回地下水・土壌汚染とその防止対策に関する研究集会, 2006.06.
71. 赤木敬悟,内田周輔,細川土佐男,神野健二,広城吉成, 還元海水中の溶存二価鉄の酸化による集積過程について, 土木学会, 2004.03.
72. 青木俊和,広城吉成,神野健二,毛利哲明, 地下ダム築造に伴う水文環境への影響評価について, 土木学会, 2004.03.
73. 滝口智子,広城吉成,神野健二,細川土佐男, 溶存二価鉄の酸化による集積過程の数値計算, 土木学会, 2003.03.
74. 大橋伸行,広城吉成,神野健二,松本大毅, 塩水化地下水の酸化還元に関する地球化学的考察, 土木学会, 2003.03.
75. 広城吉成,神野健二,佐伯和利,岩月輝希,松岡信明,岡村正紀, 塩水化地下水の地球化学的考察, 第8回地下水・土壌汚染とその防止対策に関する研究集会, 2002.06.
76. Guerra Gingging,広城吉成,神野健二,和田信一郎, Behavior of chemical species under redox conditions using multi-component solute transport model, 第8回地下水・土壌汚染とその防止対策に関する研究集会第8回講演集, 2002.06.
77. 松本大毅,広城吉成,神野健二,松岡信明,岡村正紀,仲島 賢,右田義臣,田籠久也, S湧水の起源とその地球化学的考察, 第8回地下水・土壌汚染とその防止対策に関する研究集会, 2002.06.
78. 松本大毅,広城吉成,神野健二,仲島 賢,田籠久也,右田義臣, 環境同位体を用いた湧水起源についての地球化学的考察, 土木学会, 2002.03.
79. Tosao Hosokawa, Kenji Jinno, Yoshinari HIROSHIRO , Masahiro Ohgushi, Mixing of Fresh and Salt Groundwater in a Sandy Beach Using Pipe Draining to Extend the Unsaturated Zone, 1st Groundwater Seminar between China, Korea and Japan, 2001.10.
80. Kenji JINNO, Tosao HOSOKAWA, Yoshinari HIROSHIRO and Masahiro OHGUSHI, Mixing of fresh and salt groundwater in a sandy beach using pipe draining to extended the unsaturated zone, FGR’01, 2001.06.
81. 森田 守,広城吉成,神野健二, Biochemical Transport Model in a Laboratory Column Experiment under the Redox Condition, American Geophysical Union, 2000.05.
82. 吉本拓磨,広城吉成,森田 守,神野健二, 下水処理水を湛水させた土壌カラム中の多成分化学種の動態, 土木学会, 2000.03.
83. Y. Hiroshiro, K. Jinno, S. I. Wada, T. Yokoyama, M. Kubota, Multicomponent solute transport model with cation exchange in a redox subsurface environment, ModelCARE'99 Conference, 2000.01, In order to clarify the behaviour of chemical species under reducing condition in a subaqueous soil similar to a paddy field, a column experiment was carried out. As Mn- and Fe-(hydr)oxides were dissolved by microbially mediated reduction, Na+, K+, Mg2+, Ca2+, Mn2+, and Fe2+ existed in the pore water as major cations. The Ca2+ concentration had a tendency to decrease in the layer at 5-25 cm depth in the column, whereas the Ca2+ concentration increased with time below 45 cm depth. This phenomenon can be assumed to be due to the desorption of Ca2+, by Mn2+ and Fe2+, and its infiltration. Therefore, it is necessary to develop a solute transport model which takes into account both biochemical and cation exchange reactions. In this paper, a simulation model that considers both reactions is described and applied to simulate the results of the column experiment. The reliability of this model was evaluated by comparing the calculated results with the result of the experiment..
84. 篠原孝彦,広城吉成,森田 守,大石秀人,神野健二, 酸化還元状況下におけるMn,Feの溶脱、沈殿量の評価, 土木学会, 1999.03.
85. 大串昌宏,神野健二,細川土佐男,安藤 満,山下 徹,広城吉成, 帯水層中の塩水の地球化学的水質特性について, 土木学会, 1999.03.
86. 森田 守,広城吉成,久保田基寛,神野健二,和田信一郎, 酸化還元状況下における陽イオンの輸送特性, 地下水・土壌汚染とその防止対策に関する研究集会, 1998.09.
87. 森田 守,広城吉成,久保田基寛,神野健二,和田信一郎, 酸化還元状況下における物質移動, 土木学会, 1998.03.

九大関連コンテンツ

pure2017年10月2日から、「九州大学研究者情報」を補完するデータベースとして、Elsevier社の「Pure」による研究業績の公開を開始しました。
 
 
九州大学知的財産本部「九州大学Seeds集」