Laboratory of Erosion Control  (2008)

Staff        Professor               : Mizuyama, Takahisa, Dr. Agric. Sci.

Associate Professor             : Kosugi, Ken'ichirou, Dr. Agric. Sci.

        Postdoctoral fellows: Fujimoto, Masamitsu, Dr. Agric. Sci.

                          Katsura, Shinya, Dr. Agric. Sci.

Students and research fellows

              Doctor's program  : (5)

              Master's program  : (8)

              Undergraduate:     (4)

A. Research Activities (2008.4-2009.3)

A-1. Main subjects

a)  Mechanism of sediment movement

Basic research has been carried out on debris flow, flash flood, and shallow landslide. The relationship between shallow landslide and underground pipe flow and the flow in bedrock are studied particularly.

b)  Countermeasures to prevent or reduce sediment disasters

Effective permeable dams are investigated in order to store the excessive sediment and, at the same time, not to damage the eco-system established in the streams. Barakawaeng landslide in Indonesia was studied in 2008.

c)  Hydrologic cycle in forested slopes

Elements controlling hydrologic cycle in forest are studied. Effects of forest soil hydraulic properties on water discharge from forested watersheds are analyzed by laboratory experiments, field measurements, and numerical simulation methods. Seepage into bed rock and seepage along tree trunks and tree roots were observed. Simulation models to explain these phenomena were developed.

d)  Sediment movement and integrated sediment management in river system

Sediment production process and sediment movement process in mountain region are investigated. A numerical model for calculating sediment routing is also developed. Using these results, the sediment management for mitigating sediment-related disaster and providing better natural environment from mountains to seashore is studied. Abrasion of stones was studied by experiments with rotating device and a flume.

e)  Bedload measurement with hydrophone and pits

New bedload measurement methods; hydrophone and a pit bedload sampler were developed. They have been applied in the field. The data were collected and analyzed.

f)  Survey and research on sediment disasters

Natural landslide dams formed by Iwate Miyagi Earthquake and Sichuan Earthquake were studied to predict flood discharge to evaluate countermeasures.

g)  Buffer green belt against sediment hazards

The effects of trees against debris flow and landslide are studied to design buffer green belts. Infiltration and water storage characteristics are studied in different tree kinds.

h)  Development a debris flow simulator equipped with GUI

A simulator ‘Kanako’ is developed, that evaluate several types of debris flow control structues.

A-2. Publications and presentations

a)  Publications

Books

Mizuyama, T.: Sabo dam. Dictionary of Volcano (2^nd Edit.) (edited by Shimozuru et al.), pp.387-389, Asakura Publishing Co. Ltd., Tokyo, 2008 (in Japanese)

Miyata, S., and K. Kosugi.: Soil water repellency and generation of surface runoff (in Devastation of Artificial Forest and Aater Runoff edited by Onda, Y.), Iwanami, 2008. (in Japanese)

Kosugi, K.: Encyclopedia of River (Edited by Takahashi, Y), Maruzen, 2009．(in Japanese)

Original papers

Mizuyama,T.: Sediment hazards and SABO works in Japan. International Journal of Erosion Control Engineering (IJECE)1-1; 1-4, 2008

Inoue, K., T. Mori, T. Mizuyama: Two large landslide dams and outburst disasters in the Shinano River, Central Japan. INTERPRAEVENT 2008, Dornbirn, Vorarlberg, Austria vol. 1; 121-130, 2008

Ishikawa, N., R. Inoue, K. Hayashi, Y. Hasegawa, T. Mizuyama: Experimental approach on measurement of impulsive fluid force using debris flow model. INTERPRAEVENT 2008, Dornbirn, Vorarlberg, Austria vol. 1; 343-354, 2008

Mizuyama, T., Y. Satofuka, J. Laronne, M. Nonaka, M. Matsuoka: monitoring sediment transport in mountain torrents. INTERPRAEVENT 2008, Dornbirn, Vorarlberg, Austria vol. 1; 425-432, 2008

Oda, A., Y. Hasegawa, N. Sugiura, T. Mizuyama: Recent trends in Japanese SABO model experiment technology. INTERPRAEVENT 2008, Dornbirn, Vorarlberg, Austria vol. 1;  433-444, 2008

Mizuyama,T., M. Matsuoka and M. Nonaka : Bedload measurement by acoustic energy with Hydrophone for high sediment transport rate. Journal of the Japan Society of Erosion Control Engineering (JSECE) 61-1; 35-38, 2008 (in Japanese)

Nakatani, K., T. Wada, Y. Satofuka, T.Mizuyama : Development of ‘Kanako’, a wide use 1-D and 2-D debris flow simulator equipped with GUI. Monitoring, Simulation, Prevention and Remediation of Dense and Debris Flows II, WITpress; 49-58, 2008

S.H.R.Sadeghi, T.Mizuyama, S. Miyata, T. Gomi, K. Kosugi, T. Fukushima, S. Mizugaki, Y. Onda : Determinant factors of sediment graphs and rating loops in a reforested watershed. Journal of Hydrology 356, Issues 3-4; 271-282, 2008

Wada,T., Y.Satofuka, T.Mizuyama : Integration of 1- and 2- dimensional models for debris flow simulation. Journal of JSECE 61-2; 36-40, 2008(in Japanese)

Nakatani,K., Y.Satofuka, T.Mizuyama : Development of “kanako Ver.1.10”, a wide use one dimensional debris flow simulator equipped with GUI. Journal of JSECE 61-2; 41-46, 2008 (in Japanese)

Nakatani,K., T.Wada, Y.Satofuka, T.Mizuyama:Development of an user friendly debris flow simulator. Proceedings of the 4^th Symposium on Sediment-Related Disasters; 149-154, 2008 (in Japanese)

Mizutani, T. , Y.Satofuka, D. Tsutsumi, T.Mizuyama(2008): Moisture changes in deposits on a steep stream. JJSECE 61-3; 27-30, 2008 (in Japanese)

Oda, A., T. Mizuyama, K. Mizuyama, Y. Hasegawa : The estimate method of erosion rate of cohesive materials (CRL-AET). ICSE-4 Tokyo 2008, C-8; 430-435 CD, 2008

Tsutsumi, D., T. Mizuyama, M. Nonaka, M. Fujita, M. Shida(2008) Development of a sediment flow monitoring system in a mountainous catchment. Disaster Prevention Research Institute, Kyoto University, 50B; 661-668, 2008 (in Japanese)

Masuda, S., T. Mizuyama, A. Oda, H. Otsuki(2008):Deposition and erosion at a river confluence due to a difference in peak flood times, JJSECE 61-4; 27-31, 2008 (in Japanese)

Laurentia Dhanio, T. Mizuyama, K. Kosugi, Agnes Rampisela: Changes in sediment discharge after the collapse of Mt. Bawakaraeng in south Sulawesi, Indonesia. JJSECE 61-4; 32-38, 2008

Dhanio, L.L., T. Mizuyama, K. Kosugi, D.A.A. Rampisela : Changes in sediment discharge after the collapse of Mount Bawakaraeng in South Sulawesi, Indonesia. Sediment Dynamics in Changing Environment, IAHS Publ. 325; 607-611, 2008

Nakatani, K., T. Wada, Y. Satofuka, T. Mizuyama: Development of “kanako 2D(ver.2.00)” a user friendly one- and two- dimensional debris flow simulator equipped with a graphical user interface. IJ-ECE 1-2, 63-73, 2008

Yasuda, Y. T. Mizuyama, M. Touhei and T. Taniguchi: Erosion and sediment outflow from devastated basin where hillside works has been implemented and influence on the downstream river. J-JSECE 61-5; 12-20, 2008 (in Japanese)

Musashi, Y., T. Mizuyama :Investigation on collapsed soil movement in disastrous slope failures. J-JSECE 61-5; 31-36, 2009 (in Japanese)

Wei-Li Liang, K. Kosugi, T. Mizuyama: A three-dimensional model of the effect of stemflow on soil water dynamics around a tree on a hillslope. Journal of Hydrology 366; 62-75, 2009

Oda, A., T.Mizuyama, K. Miyamoto: Experimental study on the shape of small landslide dams in torrents and the discharge hydrograph during an outburst. Annual Journal of Hydraulic Engineering, JSCE 53; 691-696, 2009 (in Japanese)

Satofuka, Y., T.Mizuyama : Numerical simulation of study debris flow developing on unsaturated deposit. Annual Journal of Hydraulic Engineering, JSCE 53; 697-702, 2009 (in Japanese)

Nakatani, K., Sumaryono, Satofuka, Y., T.Mizuyama : Application of a debris flow simulation ‘Kanako’to a debris flow danger torrent. Annual Journal of Hydraulic Engineering, JSCE 53; 703-708, 2009 (in Japanese)

Ito,H. S. Yazawa, K. Ishida, S. Yamashita, Y. Sako, K. Takahashi and T. Mizuyama：Sediment discharge observation in Yotagiri River. J- JSECE, 61-6; 19-26, 2009 (in Japanese)

Kosugi, K.: Comparison of three methods for discretizing storage term of the richards equation. Vadose Zone J., 7; 957-965, doi:10.2136/vzj2007.0178, 2008.

Gomi, T., R.C. Sidle, S. Miyata, K. Kosugi, and Y. Onda: Dynamic runoff connectivity of overland flow on steep forested hillslopes: scale effects and runoff transfer. Water Resour. Res., 44; W08411, doi:10.1029/2007WR005894, 2008.

Zhang, Z., T. Fukushima, Y. Onda, T. Gomi, S. Mizugaki, Y. Asano, K. Kosugi, S. Hiramatsu, H. Kitahara, K. Kuraji, T. Terajima, K. Matsushige: Baseflow concentrations of nitrogen and phosphorus in forested headwaters in Japan. Sci. Total Environ., 402; 113-122, DOI: 10.1016/j.scitotenv.2008.04.045, 2008.

Katsura S., K. Kosugi, T. Mizutani, S. Okunaka, T. Mizuyama: Effects of bedrock groundwater on spatial and temporal variations in soil mantle groundwater in a steep granitic headwater catchment. Water Resour. Res., 44; W09430, doi:10.1029/2007WR006610., 2008.

Gomi, T., R.C. Sidle, M. Ueno, S. Miyata, and K. Kosugi: Characteristics of overland flow generation on steep forested hillslopes of central Japan. J. Hydrol., 361; 275-290, doi:10.1016/j.jhydrol.2008.07.045, 2008.

Hayashi, Y., K. Kosugi, and T. Mizuyama: Characterization of soil water retention curves of a natural forested hillslope using a scaling technique based on a lognormal pore-size distribution. Soil Sci. Soc. Am. J., 73; 55-64, doi:10.2136/sssaj2007.0235, 2008.

Kosugi, K., Y. Yamakawa, N. Masaoka, and T. Mizuyama: A combined penetrometer-moisture probe for surveying soil properties of natural hillslopes. Vadose Zone J., 8; 52-63, doi:10.2136/vzj2008.0033, 2009.

Zhang, Z., T. Fukushima, P. Shi, F. Tao, Y. Onda, T. Gomi, S. Mizugaki, Y. Asano, K. Kosugi, S. Hiramatsu, H. Kitahara, K. Kuraji, T. Terajima, and K. Matsushige: Seasonal changes of nitrate concentrations in baseflow headwaters of coniferous forests in Japan: A significant indicator for N saturation. CATENA, 76(1); 63-69, 2008.

Mukhlisin, M., M.R. Taha, and K. Kosugi: Numerical analysis of effective soil porosity and soil thickness effects on slope stability at a hillslope of weathered granitic soil formation. Geosciences Journal, 12(4); 401- 410, DOI 10.1007/s12303-008-0039-0, 2008.

Kosugi, K., S. Katsura, T. Mizutani, H. Kato, T. Mizuyama, K. Goto, K. Ishio: Roles of deep bedrock groundwater in surface hydrological processes in a headwater catchment. From Headwaters to the Ocean (Ed. Taniguchi, M. et al.); 341-347, Taylor & Francis Group, London, 2008.

Hayashi, Y., K. Kosugi, T. Mizuyama: Change in hydraulic properties of forest soil resulting from removal of litter and compaction of human traffic. From Headwaters to the Ocean (Ed. Taniguchi, M. et al.); 117-122, Taylor & Francis Group, London, 2008.

Liang, W.L., K. Kosugi, Y. Yamakawa, T. Mizuyama: Generation of a saturated zone at the soil-bedrock interface around a tree. From Headwaters to the Ocean (Ed. Taniguchi, M. et al.); 69-74, Taylor & Francis Group, London, 2008.

Reviews

Mizuyama, T.：Balance between Information and Action Techniques in Sabo Engineering. J-JSECE, 61-1;1-2, 2008 (in Japanese)

Satofuka, Y., T. Mizuyama, K. Kosugi: Debris flow occurrence and its development on unsaturated torrent bed. 2008 Sabo Technical Center Reports; 71-83, 2008 (in Japanese)

Katsura, S., K. Kosugi, H. Kato, M. Fujimoto, T. Mizuyama: Field observation and physical tests at Mount Nishi-otafuku in Rokko-mountain. J-JSECE, 61-4; 52-55, 2008 (in Japanese)

Mizuyama, T.: Structural countermeasures for debris flow disasters. IJ-ECE, 1-2; 38-43, 2008

Kosugi, K., Y. Yamakawa, N. Masaoka, T. Mizuyama: Soil survey and hydrological observation on steep forest slope. J-JSECE 61-6; 54-58, 2009 ( in Japanese)

b)  Conference and seminar papers presented

The 119th annual meeting of Japanese Forestry Society (5 presentations)

2008 annual meeting of Japan Society of Erosion Control Engineering (26 presentations)

International Association of Hydrological Science Conference (4 presentations)

INTERPRAEVENT 2008 (4 presentations), IAHS-ICCE symposium (1 presentation), International Debris Flow Symposium (1 presentation), Annual Journal of Hydraulic Engineering, JSCE (3 presentations)

American Geophysical Union (6 presentations)

A-3. Off-campus activities

Membership in academic societies (roles)

Mizuyama, T.: Science Council of Japan (Associate member), Japan Society of Erosion Control Engineering (president), Japanese Geomorphological Union (member of committee), Japan Society for Civil Engineers, the Japan Landslide Society, Japan Society for Natural Disaster Science, the Japan Society of Revegetation Technology, Japanese Forestry Society, Japan Society of Hydrology & Water Resources

Kosugi, K.: Japan Society of Erosion Control Engineering (member of committee), Japanese Forestry Society (member), Japan Society of Hydrology & Water Resources (member), Japanese Society of Soil Physics (member)

Research grants

Monbusho research grant:

General scientific research (A) (1); Development of a combined rock-soil-plan-atmosphere model, and flood and draught predictions at ungauged mountainous watersheds (Head: Tani, Member: Kosugi et al.)

General scientific research (B); Physical analyses on critical rainfall to trigger shallow landslides (Head: Kosugi, Member: Mizuyama et al.)

A-4. International cooperations and overseas activities

International Meetings

Mizuyama, T: INTERPRAEVENT 2008 (Chairman, presentation), International Hydraulic Engineering Research (Presentation)

Kosugi, K: American Geophysical Union (Presentation)

Membership in international academic societies

Mizuyama, T.: Editor of Journal of Hydrological Sciences (editor), International Workshop on Debris Flow Hazard Mitigation (member of the International Committee)

Kosugi, K.: SSSA, IAHS, IUFRO-J, AGU

International joint researches, overseas research surveys

Kosugi, K.: Joint Research on Integrated Watershed Management for Sustainable Water Use in a Humid Tropical Region (Indonesia)

B. Educational Activities (2008.4-2009.3)

B-1. On-campus teaching

a)  Courses given

Undergraduate level: Theory of Erosion Control 1,2 (Mizuyama), Practice in Erosion Control (Mizuyama, Kosugi), Planning of Erosion Control (Mizuyama, Kosug ), Reading of Foreign Literature II (Mizuyama, Kosugi), Special Seminar on Erosion Control 1,2 (Mizuyama, Kosugi), Basic Science for Forest and Biomaterials III (Mizuyama), Forest and Biomaterial Science III (Kosugi), Laboratory Course in Forest and Biomaterials Science III (Mizuyama, Kosugi)

Graduate level: Theory of sediment induced disaster control (Kosugi), Advanced theory of Erosion Control (Mizuyama), Advanced experiment of Erosion Control (Mizuyama, Kosugi), Seminar of Erosion Control (Mizuyama, Kosugi)

B-2. Off-campus teaching, etc.

Part-time lecturer

Mizuyama, T.: Kyoto Prefectural Univ. (Materials and constructive methods), Japan International Cooperation Agency (Infrastructure), College of Land, Infrastructure, Transport and Tourism (Sediment related hazard mitigation) 

B-3. Overseas teaching

Students and research fellows from abroad

Students from abroad: 2 (Taiwan, Indonesia)

JICA trainee: 1 (Indonesia)