Laboratory of Erosion Control (2005)

Laboratory of Erosion Control

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

           Associate Professor       : Satofuka, Yoshifumi, Dr. Eng.

           Assistant Professor       : Kosugi, Ken’ichirou, Dr. Agric. Sci.

Students and research fellows

           Doctor's program: (3)

           Master's program: (9)

           Undergraduate  : (3)

A. Research Activities (2005.4-2006.3)

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 and the Sabo-planning being compatible with environmental concerns. More effective permeable dams are experimentally investigated in order to store the excessive sediment and, at the same time, not to damage the eco-system established in the streams. A function of a series of slit sabo dams was studied by flume experiments and computer simulation.

c)  Forest influence on the hydrologic cycle

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. Evapo-transpiration is one of the major factors. Models to interpret the phenomena are built.

d)  Sediment movement and integrated sediment management in river system

Sediment production process and sediment movement process in mountain region are investigated using a video camera system and turbidity meters. 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.

e)  Sediment related disasters

Debris flow disasters were surveyed in Venezuela where debris flows and landslides occurred in December, 1999. Following debris flows from landslides, landslide dams and other damages by September 21 Taiwan Earthquake were surveyed in the field. Mudflow was studied in Miyake Island after eruptions.

f)  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.

A-2. Publications and presentations

a)  Publications

Books

Mizuyama, T.; Encyclopedia of Environment Revegetation, edited by, Jpn. Soc. Revegetation Technology, Asakura, 2005.

Kosugi, K. .; Encyclopedia of Environment Revegetation, edited by, Jpn. Soc. Revegetation Technology, Asakura, 2005.

Kosugi, K.; Water Encyclopedia : Water Quality and Resource Development, edited by, Lehr, J.H., Keeley, J.W., Lehr, J.K., Kingery, T.B., Wiley, 2005.

Original papers

Satofuka,Y and T.Mizuyama; Numerical simulation on a debris flow in a mountainous river with a Sabo dam, Jour.of JSECE 58-1,14-19, 2005

Tsuchiya, S., T. Mizuyama and H. Ikeya; Debris disasters caused by deep slope failures and debris flows triggered by heavy rainfall during Typhoon Aere in the east mountains region of Hsinchu Prefecture, Taiwan, Jour. of JSECE 58-1, 31-36, 2005

Terunuma,T., K.Nishida, T.Amada, T.Mizuyama, I.Sato and M.Urai; Detection of traces of pyroclastic flows and lahars with satellite synthetic aperture radars, International Journal of Remote Sensing 26-9, 1927-1942, 2005

Oda,A., Y.Hasegawa, T.Mizuyama, K.Miyamoto, M.Nonaka; The application of bed load measurements to hydraulic model experiments using the hydrophones, Jour. of JSECE 58-2, 15-25, 2005

Fujita,M., T.Mizuyama, T.Sawada; Restoration process of poolks filled up with sediment in step-pool bed form, Jour. of JSCE 58-3,25-33,2005

Kinoshita,A., M.Fujita, M.Tagawa, T.Mizuyama, T.Sawada; The physiological impact of turbid water caused by sediment flushing on fish and a prediction method, Jour. of JSCE 58-3,34-43,2005

Mori,T., T.Itou, T.Mizuyama, A.Oda; Occurrence of landslide in the landslide dam bursting processes, Jour. Of JSCE 58-4, 41-45, 2005

Onda,Y., M.Tsujimura, T.Tanaka, K.Sasaki, T.Mizuyama, T.Uchida, O.Tainaka, H. Tanaka; Determining the criteria rainfall for debris flow warning and evacuation by rainfall-runoff response, Jour. of JSECE, 58-5,13-17, 2006

Kosugi, K., S. Katsura, M. Katsuyama, and T. Mizuyama; Water flow processes in weathered granitic bedrock and their effects on runoff generation in a small headwater catchment, Water Resour. Res., 42, W02414, doi: 10.1029 / 2005WR004275, 2006

Mukhlisin, M., K. Kosugi, and T. Mizuyama; Effects of soil porosity on slope stability and debris flow runout at weathered granitic hillslope, Vadose Zone J. 5, 283–295, 2006.

Katsura, S., K. Kosugi, N. Yamamoto, and T. Mizuyama; Saturated and unsaturated hydraulic conductivities and water-retention characteristics of weathered granitic bedrock, Vadose Zone J., 5, 35–47, 2006.

Kosugi, K.; Application of soil physics to rainwater dynamics at forested hillslope, J. Jpn. Soc. Soil Phys., 100, 15-26, 2005.

Satofuka, Y.; Influence of slope failure process on flood and sediment runoff in a mountain river, Jour. of Hydraulic Engineering, Vol. 50, 1057-1062, 2006.

Reviews

Mizuyama,T.; Introduction to Sabo Engineering (14) Landslide dam, Sabo and Chisui 164, 38-1, 112-114, 2005

Mizuyama,T.; Introduction to Sabo Engineering (15) Sediment control in a river system, Sabo and Chisui 165,38-2, 76-77, 2005

Mizuyama,T.; Introduction to Sabo Engineering (16) Evacuation and critical rainfall, Sabo and Chisui 166, 38-3, 91-93, 2005

Mizuyama,T.; Introduction to Sabo Engineering (17) Flood control effect of forest, Sabo and Chisui 167, 38-4, 87-88, 2006

Mizuyama,T.; Introduction to Sabo Engineering (18) Sediment hazards by earthquakes, Sabo and Chisui 168, 38-5, 123-125, 2005

b)  Conference and seminar papers presented

The 116th annual meeting of Japanese Forestry Society (7 presentations)

2005 annual meeting of Japan Society of Erosion Control Engineering (22 presentations)

2006 annual conference of European Geological Union (4 presentation)

Gravel Bed River 6 Congress (1 presentation)

A-3. Off-campus activities

Membership in academic societies (roles)

Mizuyama, T.: Japan Society of Erosion Control Engineering (director, vice president), Japanese Geomorphological Union (member of committee), Japan Society of Revegetation Technology (councilor)

Satofuka, Y.: Japan Society of Erosion Control Engineering (member), Japan Society of Civil Engineering (member), Japan Society for Natural Disaster Science (member)

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

Research grants

Monbusho research grant:

General scientific research (B)(2); Joint Research on control of floods and sediment movement in Semalang, Brantas and Toba Basins (Fujita and Satofuka), General scientific research(C)(2); Sediment Run-off from sabo dams and its impact on river environment (Head: Fujita, Mizuyama), Encouragement (B); Real-time prediction of sediment disasters using high resolution rainfall data (Head: Satofuka) , General scientific research (B)(1); A new hydrology model for small forest watersheds by considering water movement in weathered rocks (Head: Kosugi)

A-4. International cooperations and overseas activities

International Meetings

Satofuka, Y.: 13th Congress of APD-IAHR, Singapore (Presentation)

Kosugi, K: Annual conference of European Geological Union (Presentation)

Membership in international academic societies

Mizuyama, T.: IAHR, IAHS, IUFRO-J, International INTERPRAREVENT

Satofuka, Y.: IAHR

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

International joint researches, overseas research surveys

Mizuyama, T.: Research on erosion in sediment movement after the 1999 eathquake (Taiwan)

Satofuka, Y.: Joint Research on control of floods and sediment movement in Semalang, Brantas and Toba Basins (Indonesia)

Editors of International Journals

Mizuyama, T.: Editor of Journal of Hydrological Sciences

B. Educational Activities (2005.4-2006.3)

B-1. On-campus teaching

a)  Courses given

Undergraduate level: Regional Environment Creation (Mizuyama), Theory of Erosion Control 1,2 (Mizuyama), Practice in Erosion Control (Mizuyama, Fujita), Planning of Erosion Control (Mizuyama, Fujita), Foreign Literature in Forestry 3 (Mizuyama, Fujita), Practice of Surveying (Fujita), Special Seminar on Erosion Control 1,2 (Mizuyama, Fujita), Science of Water, soil and vegetation (Fujita)

Graduate level: Theory of sediment induceddisaster control(Satofuka), Advanced theory of Erosion Control (Mizuyama), Advanced experiment of Erosion Control (Mizuyama, Satofuka), Seminar of Erosion Control (Mizuyama, Satofuka)

B-2. Off-campus teaching, etc.

Part-time lecturer

Mizuyama, T.: Fac. Agriculture, Kyoto Prefectural Univ. (Materials and constructive methods), Fac. Agriculture, Kobe University (Environmental Engineering), Japan International Cooperation Agency (Infrastructure)

Satofuka, Y.; Fac. Engineering, Ritsumeikan Univ. (Hydraulic experiment)

B-3. Overseas teaching

Students from abroad: 1 ( Taiwan)

Researchers from abroad: 1 (Israel)