A5074845180- Landslides and related hazards
- Cryospheric studies and observations
- High voltage insulation and dielectric phenomena
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Lightning and Electromagnetic Phenomena
- Turtle Biology and Conservation
- Flood Risk Assessment and Management
- Geotechnical and Geomechanical Engineering
- Marine animal studies overview
- Amphibian and Reptile Biology
- Hydrology and Sediment Transport Processes
- Thermal Analysis in Power Transmission
- Geotechnical Engineering and Soil Stabilization
- Power Transformer Diagnostics and Insulation
- Seismology and Earthquake Studies
- Inertial Sensor and Navigation
- Rock Mechanics and Modeling
- Vacuum and Plasma Arcs
- Welding Techniques and Residual Stresses
- Graphite, nuclear technology, radiation studies
- Seismic Waves and Analysis
- Fish Ecology and Management Studies
- Geotechnical Engineering and Analysis
- Electrostatic Discharge in Electronics
Kyoto University
2008-2024
Prevention Institute
2015-2023
Institute of Disaster Prevention
2015
Central Research Institute of Electric Power Industry
1973-1988
AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 3:265-270 (2008) - DOI: https://doi.org/10.3354/ab00087 Effect of ocean current on dead-reckoning estimation 3-D dive paths emperor penguins Kozue Shiomi1,*, Katsufumi Sato2, Hiromichi Mitamura1, Nobuaki Arai1, Yasuhiko Naito3, Paul J. Ponganis4 1Department Social Informatics, Graduate School Kyoto University, 606-8501, Japan...
Results of tests for natural contamination insulator strings in inland areas are discussed. Natural exposure with -280 kV DC voltage energization were carried out 5 years. The following results obtained: (1) amount contaminant on the bottom surface increased length period, first year, at areas. Therefore, estimates severity should use data obtained periods least one year. (2) Insulators near line and ground sides a string collect more than middle when is applied. However, effect nonuniform...
AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 16:265-276 (2012) - DOI: https://doi.org/10.3354/ab00448 Monitoring attitude and dynamic acceleration of free-moving aquatic animals using a gyroscope Takuji Noda1,*, Junichi Okuyama1, Takuya Koizumi1, Nobuaki Arai1, Masato Kobayashi2 1Graduate School Informatics, Kyoto University, 606-8501 Kyoto, Japan 2Ishigaki Tropical Station,...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 10:39-45 (2009) - DOI: https://doi.org/10.3354/esr00215 Monitoring beak movements with an acceleration datalogger: a useful technique for assessing feeding and breathing behaviors of sea turtles Junichi Okuyama1,*, Yuuki Kawabata1, Yasuhiko Naito2,3, Nobuaki Arai1, Masato Kobayashi4 1Graduate School Informatics, Kyoto...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 10:181-190 (2010) - DOI: https://doi.org/10.3354/esr00250 Wild versus head-started hawksbill turtles Eretmochelys imbricata: post-release behavior and feeding adaptions Junichi Okuyama1,*, Tomohito Shimizu2,4, Osamu Abe3,5, Kenzo Yoseda2,6, Nobuaki Arai1 1 Graduate School of Informatics, Kyoto University, Yoshida...
Various types of insulators have been energized with ±250 kV dc voltage and exposed to natural conditions by the seaside continuously. Salt deposit density flashover phenomenon these investigated extensively for about two years. According results obtained so far, influence application on salt was not notable as expected, while effect insulator withstand strength greater than anticipated.
Abstract. Reconstructions of failure surfaces (prior to potential landslides or after their release), landslide deposits, other palaeotopographic features are important for hazard and erosion assessment. The volumes involved in constrain the propagation a landslide, knowledge past topography helps us understand these hazards. Some methods exist characterise geometry, but usually require monitoring information. This study tries assess validity sloping local base level (SLBL) method this...
This paper describes the results of investigation into performance various types insulators energized with 200 kV ac and ±280 dc voltages exposed to natural conditions by seaside for about five years. DC voltage application had almost same influence on salt deposit density as application. Salt flashover characteristics were much affected their types. Flashover is that in rms value.
Abstract To clarify the geological causes of rockslides induced by rainstorms in accretionary complexes, geology and geomorphology two large (volumes > 10 6 m 3 ) heavy rainfall Typhoon Talas Shimanto Belt, Kii Mountains, Japan 2011 are investigated. Our analysis reveals that thrusts with brittle crush zones controlled occurrence rockslides. The properties distribution were poorly constrained before this study. Flooding during rainstorm removed surface materials along rivers, allowing...
ABSTRACT The catastrophic Hose and Ogawatuetui landslides occurred coincidentally in 1892 following heavy rainfall the upper reaches of Kaifu River, Tokushima, Japan. area is underlain by a steeply dipping coherent formation with many faults, lies Shimanto Belt where deep‐seated are known to occur large subduction zone earthquakes. main geological geomorphological causes were found include local relief ≥ 350 m (1200‐m‐diameter analysis windows); knickpoints slope breaks at 90–150 above sea...
四国の三波川帯南部に位置するトウジ山では地震や降雨に伴い崩壊が繰返し発生してきた。この場所で崩壊が繰返し発生する原因を明らかにするために崩壊周辺の地質踏査, 地震計による地震動観測を行った。その結果, 地質学的素因として崩壊崖が位置する尾根沿いには硬質な珪質片岩, 塩基性片岩が分布し, 尾根以外は泥質片岩からなること, 局所的に東西方向で鉛直に近に軸面を持つ褶曲が発達し軸面に平行な開口割れ目が発達していることがわかった。また, 地震動の増幅特性として, 地形効果により尾根に直交する方向に2～3HzのS波が3倍程度, 斜面被覆層の重複反射により14Hz付近のS波が6倍以上に増幅されることがわかった。