Laboratory of Erosion Control (2007)
Staff
Professor
: Mizuyama, Takahisa, Dr. Agric. Sci.
Associate Professor
: Satofuka, Yoshifumi, Dr.
Assistant Professor : Kosugi,
Ken'ichirou, Dr. Agric. Sci.
Students and research
fellows
Doctor's program :
(5)
Master's program :
(8)
Undergraduate :
(4)
A. Research
Activities (2007.4-2008.3)
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)
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.
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
analized.
f)
Debris flow disasters were surveyed in Tarumizu city. Damages of houses
and people’s reaction were mainly focused.
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., Y.
Satofuka, Kosugi, K.: 4. Rediscover of Forest, 6. Disaster
prevention functions. Agriculture for the 21st C. from Bio-resources
(edited by
Original papers
Sadeghi, S.H.R., T.Mizuyama, S.Miyata, T.Gomi, K.Kosugi, S.Mizugaki, Y.Onda: Is MUSLE apt to small steeply reforested watershed? J For Res,12:270-277, DOI 10, 1007/s10310-007-0017-9,
2007
Nakatani, K., Y. Satofuka, T. Mizuyama: Development of ‘KANAKO,’ a wide
use debris flow simulator equipped with GUI, 32nd IAHR Proceedings
(CD) Paper 202, 2007
Oda,A.,
T.Mizuyama, Y. Hasegawa: An experiment on a landslide dam outburst, Jour. of the
JSECE 60-2, 33-38, 2007 (in Japanese)
Takanashi, K., T.Mizuyama, Y.Nakano: A method for delineating restricted
hazard areas due to debris flow. 4th International Workshop Debris
Flow Hazard Mitigation,
Ishikawa, N., T. Hoshikawa, M. Beppu, T. Mizuyama: Impact response and
safty check of steel pipe check dam. 7th Conference on Shock and Impact Load on
Structures, 2007
Sadeghi, S. H. R.,T. Mizuyama: Applicability of the Modified Universal Soil Loss Equation for prediction of sediment yield in Khanmirza watershed, Hydrological Sciences Journal, 52(5), 1068-1075, 2007
Ikeda,A., T.Mizuyama, K.Haraguchi: A study on critical rainfalls triggering off debris flow. Jour. of the JSECE 60-3, 26-31, 2007 (in Japanese)
Mori,T., K.Inoue, T.Mizuyama, T.Ueno: The Tobata landslide dam and
outburst floods at the
Hung,K.C., K.Kosugi, T.H.Lee, T.Mizuyama: The effects of rock fragments
on hydrologic and hydraulic responses along a slope, Hydrol. Processes, 21,
1354-1362, 2007
Miyata,S., K.Kosugi, T.Gomi, Y.Onda, T.Mizuyama: Surface runoff as effected by soil water repellency in a Japanese cypress forest, Hydrol. Processes, 21, 2365−2376，2007
Yosuke YAMAKAWA, Ken'ichirou KOSUGI, Weili LIANG, Takahisa MIZUYAMA: Improvements of the combined penetrometer−moisture probe (CPMP). Jour. of the JSECE 60-4,34-39, 2007 (in Japanese)
Wei-Li Liang, K.Kosugi, T. Mizuyama: Heterogeneous Soil Water Dynamics
around a Tree Growing on a Steep Hillslope. Vadose Zone J. 6-4, 879-889,
2007
Kosugi, K., S. Katsura, T. Mizuyama, S. Okunaka, T. Mizutani : Anomalous behavior of soil mantle groundwater demonstrates the major effects of bedrock groundwater on surface hydrological processes, Water Resources Research, 44, W01407, p.14，2008
Sadeghi, S.H.R., T. Mizuyama, S. Miyata, T. Gomi, K. Kosugi, T. Fukushima, S. Mizugaki, Y. Onda: Development, evaluation and interpretation of sediment rating curves for a Japanese small mountainous reforested watershed, Development, evaluation and interpretation of sediment rating curves for a Japanese small mountainous reforested watershed, GEODERMA 144, 1-2 (2008) 198—211, 2008
Oda, A., T.Mizuyama, J.B.Laronne, M. Nonaka, M. Matsuoka: Flume
experiments to examine hydrophone characteristics, Jour. of the JSECE,60-5,
66-71, 2008 (in Japanese)
Zhang, Z., T.
Fukushima, Y. Onda, T. Gomi, T. Fukuyama, R. Sidle, K. Kosugi, and K.
Matsushige, Nutrient runoff from forested watersheds in central Japan during
typhoon storms: implications for understanding runoff mechanisms during storm
events, Hydrol. Processes, 21, 1167-1178, 2007.
Kosugi, K.: Effects of soil layer and permeable bedrock on flood and base flow discharges from a forested watershed, J. Jpn. Soc. Hydrol. & Water Resour., 20，201-213，2007. (in Japanese)
Zhang, Z., T.
Fukushima, Y. Onda, S. Mizugaki, T. Gomi, K. Kosugi, S. Hiramatsu, H. Kitahara,
K. Kuraji, T. Terajima, and K. Matsushige, Characterization of diffuse
pollutions from forested watersheds in Japan during storm events - its
association with rainfall and watershed features, Sci. Total Environ., 390(1),
215-226, 2008.
Katsura, S., K. Kosugi, and T. Mizuyama, Application of a coil-type TDR probe for measuring the volumetric water content in weathered granitic bedrock, Hydrological Processes, 22, 750-763, DOI: 10.1002/hyp.6663, 2008.
Reviews
Mizuyama, T.; Past, present and future of the Japan Society of Erosion Control Engineering. Jour. of JSECE 59-2, 1-2 and 2006
Mizuyama, T.: Hazard maps for sediment disaster, ３．Technical development of hazard maps. Foundation Engineering 55-11,p.38-44, 2007 (in Japanese)
Mizuyama, T.: Technical development in Sabo. Base design materials 136、p.23-26, 2008 (in Japanese)
Mizuyama, T.: Sabo in the Seta river basin. Biwako Lectures 12, p.385-436, 2008 (in Japanese)
Mizuyama, T.: Characteristics of sediment disasters and alarm and evacuation. JSECE 60-6, p.56-57, 2008 (in Japanese)
Kosugi, K.: Reviewing classical studies in soil physics "A new model for predicting the hydraulic conductivity of unsaturated porous media" By Y. Mualem, Water Resources Research, Vol. 12, No. 3, 513–522 (1976) and "A closed-form equation for predicting the hydraulic conductivity of unsaturated soils" By M. Th. van Genuchten, Soil Science Society of America Journal, Vol. 44, No. 5, 892–898 (1980), J. Jpn. Soc. Soil Phys.，106，47-60，2007．(in Japanese)
Kosugi,
K.: Effects of weathered granitic bedrock on runoff processes in a small
headwater catchment, 65-74, In T. Tanaka (ed) Proceedings of International
Workshop on Integrated Watershed Management for Sustainable Water Use in a Humid
Tropical Region, ISSN 1346-3381, 31 Oct. Tsukuba, Japan,
2007.
b)
Conference and seminar papers presented
The 118th annual
meeting of Japanese Forestry Society (5 presentations)
2007 annual
meeting of Japan Society of Erosion Control Engineering (29
presentations)
Bedload
Measurement Workshop (2 presentations)
International
Hydraulic Engineering (1 presentation)
International
Association of Hydrological Science Conference (4
presentations)
A-3. Off-campus
activities
Membership in
academic societies (roles)
Mizuyama, T.:
Japan Society of Erosion Control Engineering (director, president), Japanese
Geomorphological Union (member of committee)
Satofuka, Y.:
Japan Society of Erosion Control Engineering (member of editorial committee),
Japan Society of Civil Engineering (member of committee), Japan Society for
Natural Disaster Science (member)
Kosugi, K.: Japan
Society of Erosion Control Engineering (member of committee), 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)
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:
Bedload measurement workshop (Chairman, presentation), International Hydraulic
Engineering Research (Presentation)
Kosugi, K:
International Association of Hydrological Science Conference
(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)
Satofuka, Y.:
IAHR
Kosugi, K.: SSSA,
IAHS, IUFRO-J, AGU
International
joint researches, overseas research surveys
Satofuka, Y.:
Joint Research on control of floods and sediment movement in Semalang, Brantas
and Toba Basins (Indonesia)
Kosugi, K.: Joint
Research on Integrated Watershed Management for Sustainable Water Use in a Humid
Tropical Region (Indonesia)
B. Educational
Activities (2007.4-2008.3)
B-1. On-campus
teaching
a) Courses given
Undergraduate level
: Theory of Erosion
Control 1,2 (Mizuyama), Practice in Erosion Control (Mizuyama, Satofuka),
Planning of Erosion Control (Mizuyama, Satofuka), Reading of Foreign Literature
II (Mizuyama, Satohuka), Special Seminar on Erosion Control 1,2 (Mizuyama,
Satofuka), Basic Science for Forest and Biomaterials III (Mizuyama), Forest and
Biomaterial Science III (Satofuka), Laboratory Course in Forest and
Biomaterials Science III (Mizuyama, Satofuka, Kosugi)
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, The University of Tokyo (Sabo works), Fac. Agriculture, Kobe
University (Environmental Engineering), Japan International Cooperation Agency
(Infrastructure)
Satofuka, Y.;
Fac. Engineering, Ritsumeikan Univ. (Hydraulic experiment)
B-3. Overseas
teaching
Students and
research fellows from abroad
Students from
abroad: 2 (Taiwan, Indonesia)
JICA trainee: 1 (Cameroon)