Scientific Track Record

Research Accomplishments

Peer-Reviewed Articles

First author ( *: Corresponding author): 23 / Total: 62

  1. V.N.Q. Tram, H. Somura*, T. Moroizummi (2021): Evaluation of drought features in the Dakbla watershed, Central Highlands of Vietnam, Hydrological Research Letters, 15(3): 77-83. DOI: 10.3178/hrl.15.77. [Download]
  2. O.S.Z. Nhassengo, H. Somura*, J. Wolfe (2021): Environmental flow sustainability in the Lower Limpopo River Basin, Mozambique, Journal of Hydrology: Regional Studies, 36:100843. DOI: 10.1016/j.ejrh.2021.100843. [Download]
  3. V.N.Q. Tram, H. Somura*, T. Moroizummi (2021): The impacts of land-use input conditions on flow and sediment discharge in the Dakbla Watershed, Central Highlands of Vietnam, Water, 13(5):627. DOI: 10.3390/w13050627. [Download]
  4. T. Kurozumi, Y. Mori, H. Somura, M. O-How (2020): Organic matter clogging results in undeveloped hardpan and soil mineral leakage in the rice terraces in the Philippine cordilleras, Water, 12(11):3158. DOI: 10.3390/w12113158. [Download]
  5. T. Onishi, J. Yoshino, K. Hiramatsu, H. Somura (2020): Developing a hydro-chemical model of Ise Bay watersheds and the evaluation of climate change impacts on discharge and nitrate-nitrogen loads, Limnology, 21(3):465-486. DOI: 10.1007/s10201-020-00622-2. [Download]
  6. R. D. Yustika, H. Somura*, S. B. Yuwono, T. Masunaga (2019): Impact of human activities and natural processes on the seasonal variability of river water quality in two watersheds in Lampung, Indonesia, Water, 11:2363. DOI: 10.3390/w11112363. [Download]
  7. R. D. Yustika, H. Somura*, S. B. Yuwono, B. Arifin, H. Ismono, T. Masunaga (2019): Assessment of soil erosion in social forest-dominated watersheds in Lampung, Indonesia, Environmental Monitoring and Assessment, 191:726. DOI: 10.1007/s10661-019-7890-5. [Download]
  8. J. Ide, I. Takeda, H. Somura, Y. Mori, Y. Sakuno, Y. Yone, E. Takahash (2019): Impacts of hydrological changes on nutrient transport from diffuse sources in a rural river basin, Western Japan, JGR Biogeosciences, 124 (8): 2565-2581. DOI: 10.1029/2018JG004513. [Download]
  9. A. Jami, M. Tasumi, T.M. Mosier, H. Somura, T. Konishi (2019): Evaluation of the effects of climate change on field‑water demands using limited ground information: a case study in Balkh province, Afghanistan, Irrigation Science, 37 (5): 583-595. DOI: 10.1007/s00271-019-00638-2. [Download]
  10. H. Somura, S.B. Yuwono, H. Ismono, B. Arifin, F. Fitriani, R. Kada (2019): Relationship between water quality variations and land use in the Batutegi Dam Watershed, Sekampung, Indonesia, Lakes & Reservoirs, 24 (1): 93-101. DOI: 10.1111/lre.12221. [Download]
  11. H. Somura, H. Kunii, Y. Yone, I. Takeda, H. Sato (2018): Importance of considering nutrient loadings from small watersheds to a lake – A case study of the Lake Shinji watershed, Shimane Prefecture, Japan, International Journal of Agricultural and Biological Engineering, 11 (5): 124-130. DOI: 10.25165/j.ijabe.20181105.4351. [Full Text]
  12. Y. Sugitani, H. Somura*, I. Takeda (2017): Behavior of dissolved organic matter in the two rivers inflowing to Lakes Shinji and Nakaumi, Laguna, 23: 47-58. (in Japanese with English abstract) [Full Text]
  13. H. Somura, Darmawan, K. Sato, M. Ueno, Husnain, Aflizar, T. Masunaga (2016): Characteristics and potential usage of dissolved silica in rice cultivation in Sumani Watershed, Sumatra, Indonesia, Pertanika Journal of Tropical Agricultural Science, 39 (4): 601-615. [Full Text]
  14. I. Takeda, R. Takata, H. Somura, H. Sato (2016): Behavior and mass balance of iron and phosphorus in a paddy field area with sediment accumulation of iron oxides, IDRE Journal, 301，I_57-I_63. (in Japanese with English abstract)
  15. J. Ide, H. Somura, T. Nakamura, Y. Mori, I. Takeda, K. Nishida (2015):Hydrological effects on relationships between δ15N of river nitrate and land use in a rural river basin, western Japan, River Research and Applications, 31 (5), 639-649. DOI: 10.1002/rra.2756. [Abstract]
  16. H. Somura, T. Masunaga, Y. Mori, I. Takeda, J. Ide, H. Sato (2015):Estimation of nutrient input by a migratory bird, the Tundra Swan (Cygnus columbianus), to winter-flooded paddy fields, Agriculture, Ecosystems and Environment, 119, 1-9. DOI: 10.1016/j.agee.2014.07.018. [Abstract]
  17. A. khater, Y. Kitamura, K. Shimizu, H. Somura, W. H. Abou El Hassan (2014):Improving water quality in the Nile Delta irrigation network by regulating reuse of agricultural drainage water, Food, Agriculture and Environment, 12 (3-4), 329-337.
  18. H. Sato, I. Takeda, H. Somura (2014):Secular changes of statistical dry-season discharges in Hii River basin, Journal of Rainwater Catchment Systems, 19 (2), 51-55. (in Japanese with English abstract)
  19. I. Takeda, T. Yamane, H. Somura, H. Sato, K. Fukada (2014): A probability of charcoal as woody carrier in phosphorus recovery from natural water bodies using biogenic iron-oxides, IDRE Journal, 289，55-56. (in Japanese)
  20. T. Kato, H. Watanabe, J. Boulange, S. Eguchi, A. Sakaguchi, H. Somura (2013):Difficulty and improvement for application of SWAT model to rice paddy watershed, Water, Land and Environmental Engineering, 81 (12), 983-987. (in Japanese)
  21. T. Miyamoto, M. Kawahara, Y. Mori, H. Somura, J. Ide, E. Takahashi, Y. Yone, A. Suetsugu (2013):Evaluation of management practices in forest soil environments using a multi-frequency electromagnetic sounding system, Journal of the Japanese Society of Soil Physics, 124, 17-24. (in Japanese with English abstract)
  22. H. Somura, I. Takeda, J. Arnold, Y. Mori, J. Jeong, N. Kannan, D. Hoffman (2012):Impact of suspended sediment and nutrient loading from land uses against water quality in the Hii River basin, Japan, Journal of Hydrology, 450-451, 25-35. DOI: 10.1016/j.jhydrol.2012.05.032. [Abstract]
  23. H. Sato, I. Takeda, H. Somura (2012):Secular changes of statistical hydrologic data in Hii River basin, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 68 (4), 1387-1392. (in Japanese with English abstract)
  24. E. Takahashi, Y. Yone, Y. Mori, H. Somura, J. Ide, T. Sato, M. Takeuchi (2012):Analysis of present thinning conditions on the Sugi (Cryptomeria japonica) plantation forests in Okinoshima, Shimane Prefecture, Japan, Applied Forest Science, 21 (2), 9-16. (in Japanese with English abstract)
  25. T. Kato, H. Somura, H. Kuroda, H. Nakasone (2011):Simulation of nutrients from an agricultural watershed in Japan using the SWAT model, International Agricultural Engineering Journal, 20 (3), 40-49.
  26. I. Takeda, H. Somura, H. Sato (2011):Phosphorus load reduction from nonpoint sources and resource recycle using ion-oxidizing bacteria and woody biomass, Journal of water and waste, 53 (12), 961-967. (in Japanese)
  27. T. Morisawa, Y. Mori, J. Ide, H. Somura, I. Takeda, M. Inoue (2011):Characterizing soil infiltration water quality in forest watershed during heavy rainfall, Journal of Rainwater Catchment Systems, 16 (2), 61-67. (in Japanese with English abstract)
  28. Aflizar, A. Saidi, Husnain, Ismawardi, Bambang Istijono, Harmailis, H. Somura, T. Wakatsuki, T. Masunaga (2010):A land use planning recommendation for the Sumani watershed, West Sumatra, Indonesia, Tropics, 19 (1), 43-51.
  29. Aflizar, A. Saidi, Husnain, R. Indra, Darmawan, Harmailis, H. Somura, T. Wakatsuki, T. Masunaga (2010):Soil erosion characterization in an agricultural watershed in west Sumatra, Indonesia, Tropics, 19 (1), 29-42.
  30. I. Takeda, H. Somura, Y. Mori (2010):Recovery of phosphorus from natural water bodies using iron-oxidizing bacteria and woody biomass, Ecological Engineering, 36, 1064-1069.
  31. T. Morisawa, Y. Mori, J. Ide, H. Somura, I. Takeda, M. Inoue (2010):Characterizing infiltrated soil water quality as affected by rainfall condition, Journal of the Japanese Society of Soil Physics, 114, 3-10. (in Japanese with English abstract)
  32. I. Takeda, A. Fukushima, H. Somura (2009):Long-term trends in water quality in an under-populated watershed and influence of precipitation, Journal of Water and Environment Technology, 7 (4), 293-306.
  33. H. Somura, I. Takeda, Y. Mori (2009):Sensitivity analyses of hydrologic and suspended sediment discharge in the Abashiri River Basin, Hokkaido Region, Japan, International Agricultural Engineering Journal, 18 (1-2), 27-39.
  34. I. Takeda, A. Fukushima, H. Somura (2009):Characteristics of hydrological runoff in an artificial coniferous forest with delayed thinning and its long-term changes, Transactions of JSIDRE, 263, 41-48. (in Japanese with English abstract)
  35. T. Kato, H. Somura, K. Osawa, H. Kuroda (2009):Runoff characteristics of nitrate nitrogen in a Yatsu agricultural catchment during rainfall events, Transactions of JSIDRE, 261, 49-55. (in Japanese with English abstract)
  36. H. Somura, J. Arnold, D. Hoffman, I. Takeda, Y. Mori, M. Di Luzio (2009):Impact of climate change on the Hii River basin and salinity in Lake Shinji: a case study using the SWAT model and a regression curve, Hydrological Processes, 23 (13), 1887-1900. DOI: 10.1002/hyp.7321. [Abstract]
  37. H. Somura, I. Takeda, Y. Mori (2009):Influence of puddling procedures on the quality of rice paddy drainage water, Agricultural Water Management, 96 (6), 1052-1058. DOI: 10.1016/j.agwat.2008.12.005. [Abstract]
  38. T. Toda, I. Takeda, H. Somura, J. Ide (2009):Relationship between hydrological characteristics and tank model parameters in the conifer plantations with delayed thinning, Applied Hydrology, 21, 1-9. (in Japanese with English abstract)
  39. Y. Hirai, Y. Mori, H. Somura, N. Egusa, T. Morisawa (2008):Soil environment monitoring by multi-frequency electromagnetic sounding, J. Jpn. Soc. Soil Phys., 109, 3-14. (in Japanese with English abstract)
  40. I. Takeda, H. Somura (2008): Phosphorus recovery and its subsequent agricultural use from natural water area by using wood material by thinning and iron oxidizing bacteria, Journal of Environmental Conservation Engineering, 37 (5), 347-351. (in Japanese with English abstract)
  41. H. Somura, A. Goto, H. Matsui, AM. Elhassan (2008):Impacts of nutrient management and decrease in paddy field area on groundwater nitrate concentration: a case study at the Nasunogahara alluvial fan, Tochigi prefecture, Japan, Hydrological Processes, 22 (24), 4752-4766. DOI: 10.1002/hyp.7089. [Abstract]
  42. H. Somura, K. Yoshida, H. Tanji (2008):Decadal fluctuations in the consumption of irrigation water during the rainy season, Lower Mekong River, Hydrological Processes, 22 (9), 1310-1320. DOI: 10.1002/hyp.6940. [Abstract]
  43. H. Somura, D. Nakayama, M. Aizaki, Y. Seike, M. Okumura, K. Nishikata (2008):Spatial distribution of water quality and load units in the Iinashi River basin, Shimane Prefecture, Japan, The Open Hydrology Journal, 2, 15-24. DOI: 10.2174/1874378100802010015. [Abstract]
  44. T. Morisawa, Y. Mori, N. Egusa, H. Somura, M. Inoue (2007):Environmental load discharge from differently-managed planted forests induced by heavy rainfall event -Observation with soil infiltration water-, Applied Hydrology, 20, 11-20. (in Japanese with English abstract)
  45. K. Yoshida, S. Shiozawa, O. Toda, H. Somura, H. Tanji (2007):Modeling of radiation shade function considering seasonal change of leaf area index of riparian vegetation, Annual Journal of Hydraulic Engineering, JSCE., 51, 1225-1230. (in Japanese with English abstract)
  46. K. Higuchi, O. Toda, K. Yoshida, H. Somura, H. Tanji (2007):Development of irrigation water allocation model considering gate operator density, in Northeast Thailand, J. Japan Soc. Hydrol. & Water Resour., 20 (3), 167-190.
  47. K. Nishimura, I. Takeda, A. Fukushima, H. Somura (2006):Environmental factors affecting fishes in a paddy-field area, Journal of Rainwater Catchment Systems, 12 (1), 11-16. (in Japanese with English abstract)
  48. K. Nishimura, I. Takeda, A. Fukushima, H. Somura (2006):Relationship between diversity of aquatic animals and environmental factors in drainage canals at a paddy-field area in a summer season, Transactions of JSIDRE, 242, 99-105. (in Japanese with English abstract)
  49. H. Somura, H. Tanji, K. Yoshida, O. Toda, K. Higuchi (2005):Estimation of supplementary water to paddy fields in the Lower Mekong River basin during the dry season, Paddy and Water Environment, 3 (3), 177-186. DOI: 10.1007/s10333-005-0015-5. [Abstract]
  50. H. Somura, K. Yoshida, K. Higuchi, O. Toda, H. Tanji (2005):Estimation of supplementary water capacity for non-irrigated paddy fields during the dry season in Northeast Thailand, Journal of JASS, 21 (3), 167-176. (in Japanese with English abstract)
  51. K. Yoshida, H. Somura, K. Higuchi, H. Tanji (2005):Stream temperature management with conservation of riparian vegetation, Journal of JSIDRE, 73 (4), 281-284. (in Japanese)
  52. H. Somura, K. Yoshida, K. Higuchi, O. Toda, H. Tanji (2005):Model development for estimating supplementary water to paddy fields during rainy seasons in the Lower Mekong River basin, Annual Journal of Hydraulic Engineering, JSCE, 49 (1), 235-240. (in Japanese with English abstract)
  53. K. Yoshida, H. Somura, K. Higuchi, O. Toda, H. Tanji (2005):Effect of density differences of riparian vegetation on the river thermal environment, Annual Journal of Hydraulic Engineering, JSCE, 49 (2), 1543-1548. (in Japanese with English abstract)
  54. H. Somura, H. Tanji, K. Yoshida, O. Toda, T. Masumoto (2005):Estimation of irrigated water to paddy fields under conditions of poor data availability, Cambodia, J. Japan Soc. Hydrol. & Water Resour., 18 (1), 22-34.
  55. O. Toda, K. Higuchi, H. Somura, H. Tanji (2005):History and prospects of colmatage system in Cambodia, Journal of JSIDRE, 73 (1), 31-34. (in Japanese)
  56. H. Tanji, M. Tada, H. Somura, K. Yoshida (2004):Rice demand estimation of southeast asian countries, Journal of JSIDRE, 72 (9), 795-797. (in Japanese)
  57. H. Tanji, K. Yoshida, Y. Araragi, H. Somura (2004):Evaluation of vulnerability of flood risk, Journal of JSIDRE, 72 (5), 381-384. (in Japanese)
  58. K. Yoshida, H. Tanji, H. Somura (2004):Stream temperature analysis in Nam Ngum River basin, Mekong, Annual Journal of Hydraulic Engineering, JSCE, 48 (2), 1531-1535.
  59. H. Somura, A. Goto, M. Mizutani (2003):Modeling analysis of nitrate nitrogen pollution processes of groundwater in Nasunogahara basin, Transactions of JSIDRE, 226, 1-10.
  60. H. Tanji, K. Yoshida, Y. Araragi, H. Somura (2003):Life cycle assessment of irrigation water, Journal of JSIDRE, 71 (12), 1087-1090. (in Japanese)
  61. H. Somura, M. Masuda, A. Goto, M. Mizutani (2002):Groundwater nitrogen pollution and its mechanism in Nasunogahara basin, Tochigi Pref., Japan., Transactions of JSIDRE, 219, 71-79. (in Japanese with English abstract)
  62. T. Kato, H. Somura, A. Goto (2002):Water quality forecast of Cidanau watershed, Indonesia, for watershed management planning, Rural and Environmental Engineering, 43, 3-12.

Other Publications

  1. Y. Mori, H. Somura, J. Wolfe, T. Nonaka (2015):Challenges to establishing environmental resource recycling society after Texas water environment project, Water, Land and Environmental Engineering, 38(1), 7-10.
  2. T. Kato，H. Somura (2014):Prospective of SWAT model application in basin water quality planning, Journal of Japan Society on Water Environment, 37A(7), 240-243.
  3. Y. Mori, H. Somura, I. Takeda (2008):Characterizing hydrological processes in forested hillslopes by infiltration water sampling, Journal of Environmental Conservation Engineering (Special Edition), 37 (11), 783-787. (in Japanese with English abstract)
  4. K. Yoshida, H. Somura, K. Higuchi, O. Toda, H. Tanji (2005):Relation of Corridor Vegetation Density and Stream Temperature, Dynamics and Biogeochemistry of River Corridors and Wetlands (Proceedings of symposium S4 held during the Seventh IAHS Scientific Assembly at Foz do Iguacu, Brazil, April 2005)., IAHS Publ. 294, 102-113. (ISSN 0144-7815-294)
  5. A. Fukushima, I. Takeda, H. Somura (2005):A Storage-based Runoff Model using the Delayed Input Rainfall Sequences and Its Application, Bull. Fac. Life Env. Sci. Shimane Univ., No.10, 37-46. (in Japanese)

International Conferences (Oral or Poster presentaion)

    Tram(2021) JpGU
  1. H. Somura, S. Yuwono , R. Yustika (2021):How should we manage a watershed for sustainable water environment?, Japan Geoscience Union Meeting (JpGU) 2021, 30 May - 6 June, 2021 (online).
  2. H. Somura (2019): Ecosystem-based disaster risk reduction in Japan - The traditional knowledge on water, 2019 International conference on social participation and co-management of natural resources for sustainable development (Calamba, Philippine), 17-22 June 2019.
  3. S.B. Yuwono, H. Somura (2019): Land use changes, climate change and flood episodes in Lampung, 2019 International conference on social participation and co-management of natural resources for sustainable development (Calamba, Philippine), 17-22 June 2019.
  4. H. Somura, S. Saboory, E. Rabanizada, T. M. Mosier (2019): Influence of climate change on water resource availability in a watershed, XXIX Geophysics days(Rovaniemi, Finland), 21-22 March 2019. (Poster presentation)
  5. H. Somura (2018): Evaluation of water quality and soil nutrients in winter-flooded paddy fields, The second international scientific conference on sustainable agriculture and environment(Ho Chi Minh city, Vietnam), 13-15 December 2018.
  6. H. Somura, SB. Yuwono (2018): Characteristic of water quality variations in the Batutegi Dam watershed, Sekampung, Indonesia, International workshop on "Community-oriented and watershed-based approach for harmonizing environmental conservation and regional economy"(Lampung, Indonesia), 20 September 2018.
  7. H. Somura, T. Mori (2017):Influence of overwintering Tundra Swan against soil nutrients in winter-flooded paddy fields, AGU Fall Meeting (New Orleans, LA, USA), 11-15 December 2017. (Poster Presentation)
  8. H. Somura, E. Rabanizada, S. Mohammad (2017):SWAT application for water resources management in Khulm watershed, Afghanistan, 2017 International SWAT Conference (Warsaw, Poland), 26-30 July 2017.
  9. H. Somura (2016): Potential availability of feces from a migratory bird, Tundra Swan, in winter-flooded paddy fields. Myanmar-Japan International Symposium 2016 (Pathein, Myanmar), 2-4 December 2016.
  10. H. Somura (2016): Relationship between water quality variations and land use in the Batutegi Dam watershed, Sekampung, Indonesia. The World Lake Conference 2016 (Bali, Indonesia), 7-10 November 2016.
  11. H. Somura, Darmawan, K. Sato, M. Ueno, Husnain, Aflizar, T. Masunaga (2015):Spatial and temporal distributions of DSi in Sumani watershed, Indonesia, International Conference on Green Development in Tropical Regions, Padang & Bukittinggi (Padang, Indonesia), 28-31 October 2015.
  12. H. Somura (2015): Impact of puddling processes against drainage water quality from paddy fields, 7th World Water Forum (Daegu, South Korea), 12-17 April 2015.
  13. H. Somura (2014): Application of SWAT to Lake Shinji watershed for estimating nutrient loadings from surrounding river basins, 2014 International SWAT Conference (Recife, Brazil), 28 July - 1 August 2014. (Poster Presentation)
  14. H. Somura, Y. Yone, Y. Mori, E. Takahashi (2013): Evaluation of small watersheds inflowing Lake Shinji against the water environment, 2013 International SWAT Conference (Toulouse, France), 15-19 July 2013.
  15. H. Somura, Y. Mori, I. Takeda, H. Sato (2012): Modeling analysis of land-use impact against water qualities in Hii River basin, AGU Fall Meeting (San Francisco, CA, USA), 3–7 December 2012. (Poster presentation)
  16. H. Somura, I. Takeda, Y. Mori, D. Hoffman (2010): Application of SWAT for nutrient load discharge estimation, 2010 International SWAT Conference (Seoul, South Korea), 4-6 August 2010.
  17. H. Somura, I. Takeda, T. Masunaga, Y. Mori, J. Ide (2009): Influence of bird feces to water quality in paddy fields during winter season, AGU Fall Meeting (San Francisco, CA, USA), 14–18 December 2009. (Poster presentation)
  18. H. Somura, I. Takeda (2009): Numerical analyses on seasonal variations of nutrient salts and load discharges in Abashiri River Basin, 2009 International SWAT Conference (Boulder, USA), 5-7 August 2009.
  19. H. Somura, I. Takeda (2009): Application of the SWAT model to the Abashiri River basin for impact assessment analysis to a brackish lake, Hokkaido region, Japan, 1st SWAT-SEA Conference, (Chiang Mai, Thailand), 5-8 January 2009.
  20. H. Somura, I. Takeda, Y. Mori (2008): Relationship between farming activities and water quality variations of drainage water from paddy fields area, World Environmental & Water Resources Congress 2008 (Honolulu, USA), 12-16 May 2008.
  21. H. Somura, I. Takeda, Y. Mori (2008): Estimation of suspended solid discharge to a brackish lake in Shimane prefecture, Japan, 5th SWAT International Conference (Beijing), 17-19 October 2008.
  22. H. Somura, D. Hoffman, J. Arnold, I. Takeda, Y. Mori, Y. Seike (2007) :Impact assessment of climate change to salinity in a brackish lake: A Case Study with SWAT Model and Regression Curve, AGU Fall Meeting (San Francisco, CA, USA), 10–14 December 2007. (Poster presentation)
  23. H. Somura, D. Hoffman, J. Arnold, I. Takeda, Y. Mori (2007): Application of the SWAT model to the Hii River basin, Shimane prefecture, Japan, 4th International SWAT Conference (Delft, Netherlands), 2-6 July 2007.
  24. H. Somura, K. Yoshida, H. Tanji (2006):Irrigation water consumption during the rainy season in the lower Mekong River basin, The 2nd International Symposium on Sustainable Development in the Mekong River Basin (Phnom Penh Cambodia), 16-18 September 2006.
  25. K. Yoshida, S. Shiozawa, K. Higuchi, O. Toda, H. Somura, H. Tanji (2006): Estimation of rice production and evapotranspiration by using plant growth model in Khon Kaen, Northeast Thailand, The 2nd International Symposium on Sustainable Development in the Mekong River Basin (Phnom Penh, Cambodia), 16-18 September 2006.
  26. H. Somura, K. Yoshida, K. Higuchi, O. Toda, H. Tanji (2005): Model development for supplementary water estimation in the Lower Mekong basin , The 19th Congress on Irrigation and Drainage (Beijing), 10-18 September 2005.
  27. H. Tanji, K. Yoshida, H. Somura, K. Higuchi, O. Toda (2005): Cost allocation model for construction and maintenance of irrigation and drainage facilities, The 19th Congress on Irrigation and Drainage (Beijing), 10-18 September 2005.
  28. H. Tanji, K. Yoshida, K. Higuchi, O. Toda, H. Somura (2005): Estimation of recovery of historical fish catch in Cambodia with consideration of flood water levels, The 19th Congress on Irrigation and Drainage (Beijing), 10-18 September 2005.
  29. H. Somura, H. Tanji, K. Yoshida, K. Higuchi, O. Toda (2004): Irrigated water estimation model to paddy fields using pump sets in Cambodia, The 4th International Symposium on Environmental Hydraulics and the 14th Congress of Asia and Pacific Division, International Association of Hydraulic Engineering and Research (Hong Kong), 15-18 December 2004.
  30. K. Yoshida, H. Tanji, H. Somura, K. Higuchi, O. Toda (2004): Mitigation of stream temperature change with reservoir management, The 4th International Symposium on Environmental Hydraulics and the 14th Congress of Asia and Pacific Division, International Association of Hydraulic Engineering and Research (Hong Kong), 15-18 December 2004 .
  31. H. Somura, K. Yoshida, K. Higuchi, O. Toda, H. Tanji (2004): Development of supplementary water estimation model for paddy fields in the Lower Mekong basin, International Conference on "Advances in Integrated Mekong River Management" (Vientiane, Lao PDR), 25-27 October 2004.
  32. K. Yoshida, H. Somura, K. Higuchi, O. Toda, H. Tanji (2004): Stream temperature regulating function of river corridor vegetation, International Conference on "Advances in Integrated Mekong River Management" (Vientiane, Lao PDR), 25-27 October 2004.
  33. K. Higuchi, H. Somura, K. Yoshida, O. Toda, H. Tanji (2004): Irrigation water distribution in Northeast Thailand, International Conference on "Advances in Integrated Mekong River Management" (Vientiane, Lao PDR), 25-27 October 2004.
  34. H. Tanji, K. Yoshida, K. Higuchi, O. Toda, H. Somura (2004): Estimation of fish catch of Cambodia in relation to population and flooding area, International Conference on "Advances in Integrated Mekong River Management" (Vientiane, Lao PDR), 25-27 October 2004.
  35. H. Somura, H. Tanji, K. Yoshida, O. Toda (2004): Estimation of irrigated water to paddy fields during dry season in each province, LAOS, The 2nd APHW Conference (Singapore), 5-8 July 2004.
  36. K. Yoshida, H. Somura, O. Toda, T. Masumoto, H. Tanji (2004): Evaluation of irrigation efficiency at KM6 project site, Laos, The 2nd APHW Conference (Singapore), 5-8 July 2004.
  37. O. Toda, K. Yoshida, H. Somura, H. Tanji (2004): Evaluation of tributaries contribution in the Mekong River basin during rainy and dry season, The 2nd APHW Conference (Singapore), 5-8 July 2004.
  38. H. Somura, H. Tanji, K. Yoshida, O. Toda (2004): Model development for estimating irrigated water in Kandal Province, Cambodia, ICID 2nd Asian Regional Conference (Maoma, Echuca, Australia), 14-17 March 2004.
  39. K. Yoshida, H. Tanji, H. Somura, O. Toda (2004): Evaluation of stream temperature change with reservoir management in Nam Ngum basin, ICID 2nd Asian Regional Conference (Maoma, Echuca, Australia), 14-17 March 2004.
  40. H. Somura, H. Tanji, K. Yoshida, H. Kiri, T. Masumoto (2003): Evaluation of dike construction in Cambodia, ICID Asian Regional Workshop (Taipei), 10-12 November 2003.
  41. K. Yoshida, H. Tanji, H. Somura (2003): The management of stream temperature in Laos, ICID Asian Regional Workshop (Taipei), 10-12 November 2003.
  42. H. Tanji, K. Yoshida, H. Somura (2003): Issues of life cycle assessment for irrigation, ICID Asian Regional Workshop (Taipei), 10-12 November 2003.
  43. K. Yoshida, H. Tanji, H. Somura, T. Masumoto (2003): Evaluation of potential energy loss with dam construction in Laos, Global Mapping Forum 2003 (Okinawa, Japan), 12-15 July 2003.
  44. H. Somura, H. Tanji, K. Yoshida, H. Kiri (2003): Flood risk evaluation at Phnom Penh after development and banking of the Mekong River, DPRI-IIASA 3rd International Conference (Kyoto, Japan), 3-5 July 2003.
  45. T. Kato, H. Somura, I. M. Gardjito (2001): GIS analysis of the nitrogen pollutant load and water quality in Cidanau watershed, The 1st seminar Toward Harmonization between Development and Environmental Conservation in Biological Production (Tokyo, Japan), 21–23 February 2001.
  46. H. Somura, A. Goto, M. Mizutani (2000): Modeling analysis of nitrate nitrogen pollution processes of groundwater in Nasunogahara basin, The XIV Memorial CIGR World Congress (Tsukuba, Japan), 28 November - 1 December, 2000.

National Conferences (Oral or Poster presentaion)

  1. H. Somura, E. Rabanizada, S. Mohammad, T. Moroizumi (2019): Estimation of crop yield and irrigation water amount in Balkhab watershed, Afghanistan, 2019 Annual Conference of JSHWR (The Japan Society of Hydrology and Water Resources), Narashino City, September 2019. (in Japanese), (Poster presentation)
  2. H. Somura，T. Horimoto, S. Ono, T. Moroizumi (2019): Basic study for estimating nitrogen pollutant loads to Kojima Bay, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Fuchu City, September 2019. (in Japanese), (Poster presentation)
  3. H. Somura (2018):Water quality characteristics from small watersheds to Lake Shinji, The 83rd Annual Meeting of JSLIM (The Japanese Society of LIMNOLOGY), Okayama City, October 2018. (in Japanese)
  4. H. Somura, E. Rabanizada, S. Mohammad (2018): Application of a hydrologic model for two watersheds in Northern Afghanistan, 2018 Annual Conference of JSHWR (The Japan Society of Hydrology and Water Resources), Tsu City, September 2018. (in Japanese), (Poster presentation)
  5. H. Somura，T. Mori (2018): Evaluation of Tundra Swan overwintering against water quality and soil nutrients, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Kyoto City, September 2018. (in Japanese)
  6. H. Somura, R. Yustika, S. Yuwono (2017):Characteristics of water quality in the two rivers inflowing to Batutegi Dam reservoir, Indonesia, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Fujisawa City, August 2017. (in Japanese)
  7. H. Somura, E. Rabanizada, S. Mohammad (2017):Possibility and challenges of hydrological model application to Khulm watershed, Afghanistan, 2017 Annual Conference, Japan Society of Hydrology and Water Resources, Kitami City, September 2017. (in Japanese), (Poster presentation)
  8. H. Somura, H. Kunii (2016): Water qualities of small watersheds inflowing Lake Shinji, New Year's Symposium on Estuarine Science 2016, Matsue City, January 2016. (in Japanese)
  9. H. Somura (2014): Water qualities of small watersheds inflowing Lake Abashiri, Annual meeting of Japanese Association for Estuarine Science 2014, Abashiri City, October 2014. (in Japanese)
  10. H. Somura (2014): Behavior of water qualities in small watersehds inflowing Lake Shinji, New Year's Symposium on Estuarine Science 2014, Matsue City, January 2014. (in Japanese)
  11. H. Somura (2013): Past, current, and future prediction of water loadings from a watershed to a downstream lake, Annual meeting of Japanese Association for Estuarine Science 2013, Yokohama City, October 2013. (in Japanese)
  12. H. Somura, I. Takeda, Y. Mori (2011): Modeling analysis for N and P load discharges in Hii River basin, Annual meeting of Japanese Society of Limnology, Matsue City, September 2011. (in Japanese)
  13. H. Somura, I. Takeda, T. Masunaga (2009): Impact of migratory birds to water quality in paddy fields during winter, 2009 Annual Conference, Japan Society of Hydrology and Water Resources, Kanazawa City, August 2009. (in Japanese), (Poster presentation)
  14. H. Somura, I. Takeda, Y. Mori (2008): Analysis on suspended solid discharge by using SWAT model, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Rural Engineering) (in Japanese), Akita City, August 2008. (in Japanese), (Poster presentation)
  15. H. Somura, I. Takeda, Y. Mori (2007): Estimation of streamflow in Hii River Basin by using SWAT2003 model, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Rural Engineering) (in Japanese), Matsue City, August 2007. (in Japanese), (Poster presentation)
  16. H. Somura, I. Takeda, A. Fukushima, K. Nishimura,(2006): Basic study on load discharge from paddy fields for environmental impact assessment, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Utsunomiya City, August 2006. (in Japanese)
  17. H. Somura，K. Yoshida，K. Higuchi，O. Toda, H. Tanji (2005): A study on supplementary water estimation by an agricultural production data, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Gifu City, August 2005. (in Japanese)
  18. H. Somura, H. Tanji, K. Yoshida, O. Toda, T. Masumoto (2004): Model development for estimating irrigated water to paddy fields in East Cambodia, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Sapporo City, September 2004. (in Japanese)
  19. H. Somura, H. Tanji, K. Yoshida, K. Higuchi, O. Toda (2004): Study of the estimation of supplementary water capacity for paddy fields during the dry season, Northeast Thailand, 2004 Annual Conference, Japan Society of Hydrology and Water Resources, Muroran City, August 2004. (in Japanese)
  20. H. Somura, H. Tanji, K. Yoshida, H. Kiri (2003): Grasp of monthly discharge characteristics and estimation of flooded water in the lower Mekong River basin, Cambodia, 2003 Annual Conference, Japan Society of Hydrology and Water Resources, Fukuoka City, July 2003. (in Japanese)
  21. H. Somura, A. Goto, M. Mizutani (2003): Analysis of NO3-N pollution of groundwater by distributed groundwater quality model, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Naha City, July 2003. (in Japanese)
  22. H. Somura, A. Goto, M. Mizutani (2002): Clarification and modeling analysis of NO3-N pollution processes of groundwater in Nasunogahara basin, The Sixth Symposium on Water Resources hosted by Ministry of Land, Infrastructure and Transport, Japan, Tokyo, August 2002. (in Japanese)
  23. H. Somura, A. Goto, M. Mizutani (2001): Analysis on factors and mechanism of NO3-N groundwater pollution in Nasunogahara, Tochigi Prefecture, 2001 Annual Conference, Japan Society of Hydrology and Water Resources, Kofu City, August 2001. (in Japanese)
  24. A. Goto, T. Shimizu, H. Somura, K. Yoshida, T. Kato (2000): Integrated watershed management in Cidanau River basin, West Java -Primary investigation on water balance and water quality-, Applied Hydrology, Kobe City. November 2000. (in Japanese)
  25. H. Somura, A. Goto, M. Mizutani, H. Nakamura (2000): Modeling analysis of nitrate nitrogen pollution processes of groundwater in Nasunogahara basin, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Tottori City, August 2000. (in Japanese)
  26. H. Somura, A. Goto, M. Mizutani (1999): Modeling and analysis of nitrate nitrogen pollution processes of groundwater in Nasunogahara basin, Applied Hydrology, Kobe City, November 1999. (in Japanese)
  27. H. Somura, A. Goto, M. Mizutani, A. Murakami (1999): Modeling analysis of nitrate nitrogen pollution of groundwater in Nasunogahara basin, The Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Tokyo, August 1999. (in Japanese)
  28. H. Somura, A. Goto, M. Mizutani, M. Masuda, (1998): Movement of NO3-N groundwater pollution in Nasunogahra basin, The Kanto Branch Annual Meeting of JSIDRE (The Japanese Society of Irrigation, Drainage and Reclamation Engineering), Hamamatsu City, October 1998. (in Japanese)

Books

  1. T. Kato, H. Somura, A. Goto (2003): Water Quality Forecast Model of Cidanau Watershed, Indonesia, for Watershed Management Planning, Title of Sustainable Agriculture in Rural Indonesia, Hayashi, Y., Manuwoto, S. and Hartono, S. (Eds.), Gadjah Hada University Press, 3-14.

Halloween in Texas (October 2005)

Copyright © 2006 Hiroaki SOMURA All rights reserved.