Irrigation and Drainage Lab.

Publications

2021

  • Tram VO NGOC QUYNH, Hiroaki SOMURA*, Toshitsugu MOROIZUMI (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]

2019

  • Kaoru SASAKI, Jiro HADA, Shingo YANAGISAKO, Toshitsugu MOROIZUMI (2019): Study on change of water quality by infiltration of sodium chloride into underground, Ground Engineering, 37(1), 131-137.(in Japanese with English abstract)
  • Rahmah D. YUSTIKA, Hiroaki SOMURA*, Slamet B. YUWONO, Tsugiyuki 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]
  • Rahmah D. YUSTIKA, Hiroaki SOMURA*, Slamet B. YUWONO, Bustanul ARIFIN, Hanung ISMONO, Tsugiyuki 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]
  • Jun'ichiro IDE, Ikuo TAKEDA, Hiroaki SOMURA, Yasushi MORI, Yuji SAKUNO, Yasumichi YONE, Erina TAKAHASHI (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]
  • Abdullah JAMI, Masahiro TASUMI, Thomas M. MOSIER, Hiroaki SOMURA, Toru 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]
  • Hiroaki SOMURA, Slamet B. YUWONO, Hanung ISMONO, Bustanul ARIFIN, Fitriani FITRIANI, Ryohei 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]

2018

  • Hiroaki SOMURA, Hidenobu KUNII, Yasumichi YONE, Ikuo TAKEDA, Hirokazu 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.

2017

  • Kaorru SASAKI, Jiro HADA, Toshitsugu MOROIZUMI, Makoto NISIGAKI (2017): Report on simple accelerated corrosion tests on the corrosion of copper by the chloride ions contained in groundwater, Journal of Groundwater Hydrology, 59 (4): 355-368. doi: 10.5917/jagh.59.355 (in Japanese with English abstract)
  • Kaoru SASAKI,Jiro HADA, Toshitsugu MOROIZUMI (2017): Effects of road de-icing agents on farmland soil and agricultural water, Transactions of the Japanese Society of Irrigation, Drainage and Rural Engineering, 304: Ⅱ_45−Ⅱ_52. doi: 10.11408/jsidre.85.II_45 (in Japanese with English abstract)

2016

  • Jiro HADA, Kaoru SASAKI, Toshitsugu MOROIZUMI (2016): Relation between the geological feature and the groundwater quality around the road in the hilly and mountainous areas, Ground Engineering, 34 (1): 37-44. (in Japanese)
  • Kaoru SASAKI, Jiro HADA, Toshitsugu MOROIZUMI (2016): Simple method for estimating chloride ion concentration in the farmland where de-icing agent was scattered, Ground Engineering, 34 (1): 127-132. (in Japanese)
  • Yu UEDA, Takuya MISHIMA, Takeshi MIURA, Toshitsugu MOROIZUMI (2016): Minimum temperature prediction for the next morning using on-site meteorological observation data - Examination of minimum temperature prediction method for any point on slope -, Agricultural Meteorology of Chugoku and Sikoku, 29: 2-8. (in Japanese)
  • Jiro HADA, Kaoru SASAKI, Toshitsugu MOROIZUMI, Makoto NISHIGAKI (2015): Investigation and future prediction on the infiltration of de-icing agent into groundwater based on advection-dispersion analysis, Japanese Geotechnical Journal, 11 (3): 269-282. doi: 10.3208/jgs.11.269 (in Japanese with English abstract)

2015

  • Jiro HADA, Kaoru SASAKI, Toshitsugu MOROIZUMI (2015): Quantification of the amounts of infiltration, river runoff, and scattering of the de-icing agent sprinkled on the way, Japanese Geotechnical Journal, 10 (4): 461-471. doi: 10.3208/jgs.10.461 (in Japanese with English abstract)
  • Takeshi NAKAMICHI, Toshitsugu MOROIZUMI (2015): Applicability of three complementary relationship models for estimating actual evapotranspiration in urban area, Journal of Hydrology and Hydromechnics, 63(2): 177-123. doi: 10.1515/johh-2015-0011

2014

  • Toshitsugu MOROIZUMI, Shusaku KUBOTA (2014): Prediction of soil water content using multiple regression model with time series data, Transactions of the Japanese Society of Irrigation, Drainage and Rural Engineering, 289: 47-52. doi: 10.11408/jsidre.82.47 (in Japanese with English abstract)

2011

  • Toshitsugu MOROIZUMI (2011): The characteristics of groundwater level and water quality and the classification of monitoring well in waste landfill, Journal of Groundwater Hydrology, 53 (1): 73-79. doi: 10.5917/jagh.53.73 (in Japanese)

2010

  • Toshitsugu MOROIZUMI, Takuya KOMURA, Takeshi MIURA (2010): Improvement in the estimations of potential evaporation by the temperature method using regional coefficients, Transactions of the Japanese Society of Irrigation, Drainage and Rural Engineering, 269: 137-143. doi: 10.11408/jsidre.78.429 (in Japanese with English abstract)

2009

  • Toshitsugu MOROIZUMI, Tomoyo KUSUYAMA, Takeshi MIURA (2009): Preliminary study on the measurement for water content and electric conductivity in soils using time domain reflectometry, Environment Research and Control, 31: 32-37. (in Japanese with English abstract)
  • Toshitsugu MOROIZUMI, Takuya KOMURA, Takeshi MIURA (2009): Improvement for the estimations of potential evaporation using Makkink equation, Journal of Japan Society of Hydrology & Water Resources, 22 (6): 479-483. doi: 10.3178/jjshwr.22.479 (in Japanese with English abstract)
  • Toshitsugu MOROIZUMI, Hiromasa HAMADA, Somsak SUKCHAN, Masahiro IKEMOTO (2009): Soil water content and water balance in rainfed fields in Northeast Thailand, Agricultural Water Management, 90: 160-166. doi: 10.1016/j.agwat.2008.07.007
  • Haruna WATANABE, Michio MURAKAMI, Takuya KOMURA, Toshitsugu MOROIZUMI, Hiroaki KOMAI (2009): Evaluation of water balance and water use stress in principal cities in Japan, Journal of water and waste, 51 (2): 137-148. (in Japanese)

2008

  • Toshitsugu MOROIZUMI,Wakako HANZAWA, ChoichiSASAKI (2008): Estimation of NAPL content in saturated sandy soil using dual-probe heat-pulse method, Journal of Groundwater Hydrology, 50 (1): 17-24. doi: 10.5917/jagh1987.50.17 (in Japanese with English abstract)
  • Hiromasa HAMADA, Hiroki WATABE, Toshitsugu MOROIZUMI, Somsak SUKCHAN (2008): Analysis of surface runoff in a sloping sandy soil in Northeast Thailand using soil water storage capacity, Journal of the Japanese Society of Soil Physics, 109: 45-50
  • Toshitsugu MOROIZUMI, Masahiro IKEMOTO, Hiromasa HAMADA, Somsak SUKCHAN (2008): In situ calibration of a profile probe and soil water content measurements: Case study of rain-fed land in Northeast Thailand, Journal of Japan Society of Hydrology & Water Resources, 21 (5): 361-367. doi: 10.3178/jjshwr.21.361 (in Japanese with English abstract)
  • Toshitsugu MOROIZUMI, Yumi SASAKI (2008): Estimating the NAPL content in saturated sandy soil using amplitude domain reflectometry, Soil Science Society of America Journal, 72: 1520-1526, doi: 10.213/sssaj2006.0212
  • Toshitsugu MOROIZUMI, Yumi SASAKI, Takeshi MIURA (2008): Fundamental study on NAPL content and permittivity in unsaturated sandy soil using amplitude domain reflectometry, Environment Research and Control, 30: 27-32. (in Japanese with English abstract)
  • Takuya KOMURA, Toshitsugu MOROIZUMI, Kenji OKUBO, Hiroaki FURUMAI, Yoshiro ONO (2008): Estimation of potential water resources in mega cities in Asia, International Session, 2008 Korea Water Resources Association Annual Meeting, 75-81.
  • Toshitsugu MOROIZUMI, Yumi SASAKI, Takeshi MIURA (2008): Volatilization of organic compounds from sandy soil, 5th International Conference, Interface Against Pollution 2008, Kyoto, Japan, 179.
  • Takeshi MIURA, Yuji MORIMOTO, Emi HIRANO, Toshitsugu MOROIZUMI (2008): Investigation of irrigation water requirement in a greenhouse - Estimation of upward soil water flux and evapotranspiration -, New development agriculture, 598: 13-19. (in Japanese)

2007

  • Hiroshi SUITO, Yasuo HORIKAWA, Youhei NANAZAWA, Tetsuya TSUKAZAKI, Toshitsugu MOROIZUMI, Yoshiro ONO (2007): Simulation of groundwater flow and identification of permeability, Publications of the Research Institute for Mathematical Sciences, 1539: 37-42. (in Japanese with English abstract)
  • Yasuo HORIKAWA, Hiroshi SUITO, Toshitsugu MOROIZUMI (2007): Development of an advection diffusion simulation system for groundwater flow and pollutants at final disposal site, Eco-informatics result report of environmental studies, 23-24. (in Japanese)
  • Masato ODA, Toshitsugu MOROIZUMI (2007): Evaluation of the applicability of the water-saving vegetable cultivation technology by the soil moisture simulation, Journal of the Japanese Agricultural Systems Society, 23 (3): 245-250. doi: 10.14962/jass.23.3_245 (in Japanese with English abstract)
  • Toshitsugu MOROIZUMI, Takuya KOMURA, Kenji OKUBO, Michio MURAKAMI, Haruna WATANABE, Hiroaki FURUMAI (2007): Estimation of potential water resources and water use in mega cities in Asia, Proceedings of 2nd International Workshop on Rainwater and Reclaimed Water for Urban Sustainable Water Use, Kyoto, 163-164.
  • Toshitsugu MOROIZUMI, Masaya YAMAMOTO, Yuji MORIMOTO, Hiromasa HAMADA, Somsak SUKCHAN (2007): Internship in Land Development Department in Khon Kaen, Thailand, Water, Land and Environmental Engineering, 75 (12): 1107-1112. (in Japanese)
  • Rintaro OKUNO, Yukiyoshi IWATA, Takeshi MIURA (2007): Determination of lodging of wheat by the satellite remote sensing -Proposal of lodging discrimination index in ripening period-, Agricultural Meteorology of Chugoku and Sikoku, 20: 2-7. (in Japanese)
  • Takahiro TAKIMOTO, Toru IWATA, Susumu YAMAMOTO, Takeshi MIURA (2007): Carbon dioxide balance in a barley field by using the eddy correlation method, Agricultural Meteorology of Chugoku and Sikoku, 20: 8-13. (in Japanese)

2006

  • Mamoru TANIGUCHI, Hiroaki FURUMAI, Yoshiro ONO, Kenji OKUBO, Toshitsugu MOROIZUM (2006): Evaluation of neighborhood water environment and its modelling: To realize town improvement based on the concept of water recycle, Environmental Systems Research, 33: 125-131. (in Japanese with English abstract)
  • Takeshi MIURA, Emi HIRANO, Yuji MORIMOTO, Toshitsugu MOROIZUMI (2006): Estimation of upward soil water flux and evapotranspiration in Oriental Pickling Melon greenhouse, Agricultural Meteorology of Chugoku and Sikoku, 19: 2-7. (in Japanese)
  • Wakako HANZAWA,Toshitsugu MOROIZUMI, Choichi SASAKI (2006): Measurement of thermal conductivity in the soils of Shirakami Mountains, Journal of the Faculty of Environmental Science and Technology, Okayama University, 11 (1): 89-92. (in Japanese with English abstract)
  • Hiromasa HAMADA, Toshitsugu MOROIZUMI, Hiroki WATABE, Kriengsak SRISUK, Shuichi HASEGAWA (2006): Soil water and groundwater in Nong Saeng, Proceedings of JIRCAS Rainfed Agriculture Project Workshop, 27-31.
  • Hiroshi SUITO, Yasuo HORIKAWA, Toshitsugu MOROIZUMI, Yoshiro ONO (2006): Simulation of flows of groundwater and contaminants around landfill sites, European Conference on Computational Fluids Dynamics (ECCOMAS CFD2006), Hotel Zuiderduin, Egmond aan Zee, The Netherlands, 169.
  • Hiromasa HAMADA, Toshitsugu MOROIZUMI, Nongluck SUPHANCHAIMAT, J. LAMLAOR, Hiroki WATABE (2006): Dialogue research between researchers and farmers on development of water resources, 3rd Asian Pacific Conference, CD-ROM.
  • Hiroshi SUITO, Yasuo HOROKAWA, Tetsuya TSUKAZAKI, Toshitsugu MOROIZUMI, Yoshiro ONO (2006): Numerical analysis for heat and groundwater flows in landfill sites, Abstract proceedings of the 4th Intercontinental Landfill Research symposium, Dundret Hotel, Gallivale, Sweden, 193-194.

2005

  • Hiromasa HAMADA, Somsak SUKCHAN, Toshitsugu MOROIZUMI, Hiroki WATABE, Shuichi HASEGAWA (2005): Use of bromide to trace infiltration of rainfall through sandy soil in Northeast Thailand, Japan Agricultural Research Quarterly, 39(1): 29-35.
  • Hiromasa HAMADA, Toshitsugu MOROIZUMI, Nongluck SUPHANCHAIMAT (2005): Opinions and questions of farmers in Nong Saeng village, northeast Thailandto results of soil and groundwater investigations, Journal of the Japanese Society of Soil Physics, 99: 95-101.
  • Choichi SASAKI, Akio TONOUCHI, Kaori NODA, Nobuhiko MATUYAMA, Kyo KOSEKI, Toshitsugu MOROIZUMI, Daisuke HIGAKI (2005): Studies on the soil of Shirakami Mountains (2), Shirakami kenkyu, 2: 28-34. (in Japanese with English abstract)
  • Hiromasa HAMADA, Toshitsugu MOROIZUMI, Hiroki WATABE, Kriengsak SRISUK, Shuichi HASEGAWA (2005): Groundwater in Nong Saeng, JIRCAS-Thailand Collaborative Research Project Workshop Proceedings, 32-39.
  • Toshitsugu MOROIZUMI, Kenji OKUBO, Yoshiro ONO, Mamoru TANIGUCHI (2005): Estimation of regional-scale actual evapotranspiration in Okayama using AMeDAS, land classification, and elevation data, Proceedings of International Workshop on Rainwater and Reclaimed Water for Urban Sustainable Water Use, 155.
  • Hiroshi SUITO, Yasuo HORIKAWA, Toshitsugu MOROIZUMI, Yoshiro ONO (2005): Numerical simulation of underground water flow around landfill sites, 10th International Waste Management and Landfill Symposium, Sardinia, 425-426.

2004

  • Kyo KOSEKI, Choichi SASAKI, Sukthai PONGPATTANASIRI, Toshitsugu MOROIZUMI (2004): Changes in the concentrations of oxygen and carbon dioxide in a gravel and sand subsoil layer of a paddy field, Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering, 229: 15-22. doi: 10.11408/jsidre1965.2004.15 (in Japanese with English abstract)
  • Toshitsugu MOROIZUMI, Haruhiko HORINO (2004): Tillage effects on subsurface drainage, Soil Science Society of America Journal, 68, 1138-1144.
  • Nozomi USHIKAWA, Toru IWATA, Takeshi MIURA, Akinori OHTOU, Yoshihisa HIGUCHI, Eiji OHTAKI (2004): Monin-Obukhov similarity theory for carbon dioxide, water vapor and vertical wind velocity, Journal of agricultural meteorology, 60 (3): 209-214. doi: 10.2480/agrmet.60.209 (in Japanese with English abstract)
  • Sachiko INOHARA, Toru IWATA, Takeshi MIURA, Akinori OHTOU, Yoshihisa HIGUCHI, Eiji OHTAKI (2004): The flux-gradient relationship of carbon dioxide over a paddy field, Journal of agricultural meteorology 60 (3): 215-220. doi: 10.2480/agrmet.60.215 (in Japanese with English abstract)
  • Kengo ITO, Masateru SENGE, Takeshi MIURA, Iwao HASHIMOTO (2004): The influence of greenhouse ratio on the capacity of farm pond and water distribution system in upland irrigation district, Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering, 232: 11-18. doi: 10.11408/jsidre1965.2004.355 (in Japanese with English abstract)
  • Toshitsugu MOROIZUMI, Yuichi SATO, Koichi SATO, Choichi SASAKI (2004): Measurement of thermal conductivity in soils and application of de Vries model, Journal of the Faculty of Environmental Science and Technology, Okayama University, 9 (1): 117-120. (in Japanese with English abstract)
  • Fumihito YOSHIZAKI,Norihiro KURODA,Takeshi MIURA, Toshitsugu MOROIZUMI (2004): Characteristics of radiation balance in paddy and upland fields, and differences of measured values among measurement device types, Bulletin of the Field Science Center, Faculty of Agriculture, Okayama University, 26: 26-27. (in Japanese)
  • Choichi SASAKI, Akio TONOUCHI, Kaori NODA, Nobuhiko MATUYAMA, Daisuke HIGAKI, Toshitsugu MOROIZUMI (2004): Studies on the soil of Shirakami Mountains (1), Shirakami kenkyu, 1: 24-29. (in Japanese with English abstract)

2003

  • Toshitsugu MOROIZUM (2003): Survey on spatial variability of surface soil moisture and soil physical properties in a sloping grass land Field, Journal of the Faculty of Environmental Science and Technology, Okayama University, 8 (1): 81-85 (in Japanese with English abstract)

2002

  • Toshitsugu MOROIZUMI, Yuichi SATO, Koichi SATO (2002): Spatial variability of surface soil moisture and investigation of the local sampling sites exhibiting field average in a sloping grassland field, Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering, 220: 9-17. doi:10.11408/jsidre1965.2002.447 (in Japanese with English abstract)

1996

  • Toshitsugu MOROIZUMI, Haruhiko HORINO, Kimihito NAKAMURA, Toshisuke MARUYAM (1996): Theoretical studies on characteristics of heat and water transfer in unsaturated soil zone, Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering, 184: 661-669. doi: 10.11408/jsidre1965.1996.661 (in Japanese with English abstract)
  • Kimihito NAKAMURA, Haruhiko HORINO, Toshitsugu MOROIZUMI, Toshisuke MARUYAMA (1996): Quasi-steady characteristics of heat and water movement in layered soil with constant water table, Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering, 181: 39-48. doi: 10.11408/jsidre1965.1996.39 (in Japanese with English abstract)

1991

  • Haruhiko HORINO, Toshitsugu MOROIZUMI, Toshisuke MARUYAMA (1991): Experimental studies on characteristics of heat transfer in saturated soil zone, Journal of Groundwater Hydrology, 33 (4): 227-238. doi: 10.5917/jagh1987.33.227 (in Japanese with English abstract)