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Tetsuya Kubota Last modified date:2019.04.05

Professor / Forest Environment Sciences
Department of Agro-environmental Sciences
Faculty of Agriculture


Graduate School
Undergraduate School


E-Mail
Homepage
http://ffpsc.agr.kyushu-u.ac.jp/control/
Erosion Control and Forest Conservation .
http://www.ee.e-mansion.com/~tkubota/index2.html
Forest, landslide disaster and meteorology - La foret meteorologique .
Phone
092-642-3084
Fax
092-642-2885
Academic Degree
Doctor of agriculture, Kyoto University
Field of Specialization
Erosion control, landslide disasters, disaster meteorology, torrent environment, forest conservation
Outline Activities
Concerning the mitigation of landslide disasters or sediment related disasters, it is important to predict the occurrence of landslides and to prepare for hazards in the mountainous watershed. As the basic research, the meteorological condition including the influence of the global climate change, the geomorphological process and the interaction between landslides and vegetation on forest slope system are studied. Also I conducted the education and research associated with new countermeasures for debris flow and slope stability relevant to forests, warning-evacuation system, hazard mapping, forest road designing, forestry machines as well as torrent environment.
Research
Research Interests
  • Forest slope stability and sediment runoff including woody debris
    keyword : forest load, root system, slope stability, reforestation, woody debris
    2001.09~2020.03Effects of forest in slope stabilization This theme emerged into the spotlight with only a few considerations of negative effects on forest load. The portion over the slope surface, i.e., their trunks and canopies, act as surcharge load for slope stability. Although roots have no effects on deep slides that sometimes appear with heavy rainfall and severe earthquakes, these negative effects have seldom been examined. Hereby, an assessment of slope stability with forest surcharge has to be taken in order to ensure the slope stability analysis when it comes to planning against landslides. Three different types of forest slope (conifer forests and a broad-leaved tree forest) were chosen as test slopes in this study, and analyzed by non-circular slip surface analysis with different forest felling types, i.e., 50%, 80%, 100% felling from the top and no felling. Consequently, it is found that there are some cases in which its effects reaching up to approximately 4% of their safety factor..
  • Debris flow travering and runoff characteristcs in Granit forest slopes
    keyword : debris flow, Granit, sediment runoff, forest, precipitation
    2014.09~2016.03Sediment discharge from the forest basin that consists of vulnerable sedimentary rocks in Mimikawa area which was devastated by typhoon in 2005. To understand the characteristics of sediment discharge from this basin that consists of vulnerable Shimanto geological condition, an analysis with geology, topography, vegitation and precipitation are conducted..
  • Consideration to the early warning rainfall criteria of forest slope instability after strong earthquake
    keyword : landslides, susceptibility, forest slope, instability, , earthquake,hazard risk, geology
    2011.05~2015.03Landslide susceptibility assessment For the landslide susceptibility assessment and land use restriction, it is important to define the susceptible slopes with appropriate indexes. For that popose, appropriate methods to find the landslides with geological, seismic, and topological factors are studied..
  • Meteorological condition of landslide disasters and climate change
    keyword : climate change, precipitation, sediment, landslide, debris flow, meteorology, early warning
    2008.04~2020.03Diagnosis of the synoptic~meso-scale meteorological condition and prediction of landslide disasters with inexpensive method are always one of the focal points on landslide warning and evacuation. Forecast method in 12 - 24 hours advance for wide region was developed in this aspect. Based on this method, the effect of climate change (gloval warming) is analyzed. Abreast, the long term fluctuation of extreme precipitation events and sediment runoff as well as their prediction model are studied with power spectrum analysis or cycle-random simulation on the aspect of climate change..
  • Disaster meteorological condition in mountain ranges
    keyword : meteorology, warning, Internet, neural network, rader rain observation, RaderAMEDAS
    2000.06~2020.03Diagnosis of the synoptic~meso-scale meteorological condition and prediction of landslide disasters Diagnosis of the synoptic~meso-scale meteorological condition and prediction of landslide disasters with inexpensive method are always one of the focal points on landslide warning and evacuation. Adopting free meteorological information such as wind speeds in upper air etc., on the internet world wide web is a solution to a reasonable method, albeit rough prediction. Forecast in 12 - 24 hours advance for wide region with neural network and self-organized criticality assumption etc., even under this condition, provide an efficient method. Hence, extreme events as typhoons are studied in point of debris flow - landslide disaster, and consequently diagnosis of disastrous meteorological condition and prediction of their occurrences for wide range area achieves a success with the WWW information..
  • Early warnig system of landslide disaster in mountainous areas
    keyword : early warnig, evacuation, precipitation, meteorology, soil moisture, Internet, neural network
    2005.04Elucidation of the warning and evacuation criteria on sediment related disasters in mountain ranges: Criteria with rainfall and soil moisture content in northern Kyushu (Japan) and Sierra Madre Oriental Nuevoleon (north-eastern Mexico)..
  • Landslide susceptiblility investigation using the science of complexity
    keyword : landslide, Fractal, susceptibility, hazard risk, mapping, travel direction, foot
    2002.04~2020.03Fractal dimension of landslide groups Here, new index "Fractal dimension" of landslide groups is studied. The Fractal is a mathematical theory that describes the quality of complex shapes. Landslides in a group have sufficient self-similarity and can have Fractal dimension. Fractal dimension of aggregate shape of landslide group is expected as an index of density and frequency of landslides in the investigation of possible landslide susceptibility. More than that, it is expected as an index of complexity level of landslide moving directions that are needed in the screening method for detail site investigation of landslide movement in order to establish the restriction area. Accordingly, the appropriate method to measure the Fractal dimensions and their relations with geological and topological factors are studied. Consequently, it is recognized that the Fractal dimensions are so subtle that need to be measured clearly. Hence, based on mathematical theory (set theory), the optimized box counting method with the most efficient dimension gained from measurement by several rotated overlay grids are developed and adopted here. The Fractal dimensions by this method are gained to apply some susceptible mapping in typical geological areas..
  • Sediment runoff from the forests in the Sangun metamorphic zones
    keyword : sediment runoff, forest, precipitation, torrent, Sangun metamorphic rocks
    2002.05~2005.03Sediment discharge from the forest basin that consists of vulnerable metermorphic rocks To understand the characteristics of sediment discharge from the forest basin that consists of vulnerable San-Gun metermorphic rocks, their observation and analysis with precipitation are carried out..
  • Torrent stream environment
    keyword : soundscape, fishway
    1999.04~2005.09Torrent fishways for erosion control facilities Stream type fishways are more desirable for various species than classic pool type fish ladder. However, there exist many old type fishways that have been already built into Sabo facilities. They need certain improvement in the structures and discharge control to maintain fish passage conditions. In this study, fish behavior with various discharges and step height comparing with three inner structure, that is, slope separation wall type or step separation wall type concerning with pool separations, and stone fill type (rip rap fill),i.e., Bio Top type, were studied by experiments to extract the versatile information for the improvement of fishways built already. Adding to this study, researches of the water soundscape on Sabo (check dam) facility, the minus ion distribution in forests and torrents, the hydraulical torrents features regarding to the BioTop are carried out..
Current and Past Project
  • The characteristics, cause, geoscientific condition (geology, topography, vegetation) of water induced disaster or mountainous hazards forcused on wood debris runoff induced by extreme rainfall in Northern Kyushu district in 2017 July are try to elucidate while the consideration of countermeasures and erosion control measures including forest management are conducted.
  • The characteristics, cause, geoscientific condition (geology, topography, vegetation) of sediment related disasters or mountainous hazards including wood debris runoff induced by extreme rainfall in Northern Kyushu district in 2017 July are try to elucidate while the consideration of countermeasures and erosion control measures including forest management are conducted.
  • The characteristics, cause, geoscientific condition (geology, topography, vegetation and seismic acceleration) of sediment related disasters or mountainous hazards induced in Aso mountain range by the Kumamoto earthquake in 2016 April are try to elucidate while the consideration of countermeasures and erosion control measures are conducted.
  • The characteristics, cause, geoscientific condition (geology, topography, vegetation and precipitation) of sediment related disasters or mountainous hazards induced by the heavy downpour in Hiroshima city in 2014 August are try to elucidate while the consideration of countermeasures and erosion control measures are conducted.
  • The characteristics, cause, geoscientific condition (geology, topography, vegetation and precipitation) of sediment related disasters or mountainous hazards due to the great earthquake in eastern Japan 2011 March are try to elucidate while the consideration of countermeasures and erosion control measures are conducted.
  • Itoshima city is comprised with certain amount of forest area. Almost 45% of its forest is already available, and they require the usage as bio-mass energy sources. Terefore, it is needed to evaluate the amount of forest mass product which is able to log without deteriorate the forest slope condition against disaster mitigation and so on. Under this situation, since the study on the efficient forest management and woodland conservation are needed in this area, the research on the efficient forest conservation to prevent landslide disaster in this area is conducted.
  • Itoshima city is comprised with certain amount of forest area. However, it is divided into small private forests, and the local government is required to manage them efficiently for disaster mitigation and so on. Under this situation, since the study on the efficient forest management and woodland conservation are needed in this area, the research on the efficient forest conservation to prevent landslide disaster in this area is conducted.
  • Sediment discharge from the forest basin that consists of vulnerable sedimentary rocks in Mimikawa area which was devastated by typhoon in 2005. To understand the characteristics of sediment discharge from this basin that consists of vulnerable Shimanto geological condition, and to consider the erosion control measures, an analysis with geology, topography, vegitation and precipitation are conducted.
Academic Activities
Books
1. Sabo erosion control engineerings.
2. Hasnawir, Tetsuya Kubota, Early Warning of Sediment Related Disasters in Mountain Ranges, LAP Lambert Academic Publishing(Germany), 2012.08.
3. The Warning and Evacuation System against Landslide Disasters.
4. Handbook for the contermeasure of slope stability and slope environment, Chp.4 Erosion control works.
5. Utilization of broad leaf trees, Chap.4 Broad leaf forests and slope disasters.
6. Kubota, T., Landslides, A. A. Balkema, Rotterdam, Study on the fractal dimensions and geological condition of landslides、385-392, 1996.09.
Reports
1. Forest slope devastation and landslide disaster induced by the 2017 Northern Kyushu severe rainfall associated with the characteristics of wood debris disaster.
2. The landslide and organic debris disaster induced by the severe rainfall in Northern Kyushu district in 2017, on the artificial forest point of view.
3. The landslide disaster induced by the Kumamoto earthquake in 2016.
4. The influence of increase in rainfall on sediment related disasters due to the climate change in mountain ranges and its meteorological condition.
5. The Sabo or erosion control engineerings in the age of extreme disasters under the global climate change..
6. Evaluation of the forest slope instability appling the science theory of complexity.
7. Landslides and slope failures induced by the Fukuoka-Seihouoki earthquake on March 20 in 2005.
8. Diagnosis of local meteorological conditions and the evaluation of orographic point rains with the Internet information for evacuation systems in mountainous areas.
Papers
1. Laura Sanchez-Castillo, Ken'ichirou KOSUGI2, Naoya MASAOKA, Tetsuya Kubota, Eco-morphological characteristics of fern species for slope conservation, J. Mt. Sci., 16, 3, 504-515, 2019.03.
2. The influence of grass root density and soil strength on surface erosion of artificial slopes.
3. Elucidation of the landslides and woody debris runoff induced by the Northern Kyushu downpour in 2017.
4. Atsuhisa Yano, Yoshinori Shinohara, Haruka Tsunetaka, Hideaki Mizuno, Tetsuya Kuobta, Distribution of landslides caused by heavy rainfall events and an earthquake in northern Aso Volcano, Japan from 1955 to 2016, Geomorphology, Elsevier, 327, 533-541, 2019.02.
5. Aril Aditian, Tetsuya Kubota, Yoshinori Shinohara, Comparison of GIS-based landslide susceptibility models using frequency ratio, logistic regression, and artificial neural network in a tertiary region of Ambon, Indonesia, Geomorphology, Elsevier, 318, 101-111, 2018.10.
6. Landslide unexpectedly induced without rainfall nor earthquake in Yabakei, Nakatsu, Ooita, northern kyushu district in 2018.
7. Tetsuya KUBOTA, Takashi JITOUSONO, Yoshiki NAGAI, Osamu SHIMIZU, Hideaki MIZUNO, Yasuhiro NOMURA, Yamato SUZUKI, Takao YAMAKOSHI, Takashi KOI, Hiroyuki OHISHI, Yasuyuki HIRAKAWA, The overview of the Yabakei landslide occurred on April 11th 2018 in Nakatsu city, Oita prefecture, Japan, International Journal of Erosion Control Engineering, Volume 11, Issue 2, 36-37, 2018.05.
8. Elucidation of the slope instability and the forest influence on landslidesinduced by the Kumamoto earthquake in 2016.
9. A Elucidation of the devastated Forest Slopes and Woody Debris Runoff in 2017's Northern Kyushu Disaster
.
10. Landslide disaster induced by heavy rainfall in northern kyushu district in 2017.
11. Laura Sanchez-Castillo,Tetsuya Kubota,Israel Cantu-Silva,Maria Yanez-Diaz,Hasnawir Hasnawir,Miguel Pequeno-Ledezma , Comparisons of the Root Mechanical Properties of three Native Mexican Tree Species for Soil Bioengineering Practices, Botanical Sciences, 95, 2017.06.
12. Aril Aditian, Tetsuya Kubota, Causative Factors Optimization Using Artificial Neural Network for GIS-based Landslide Susceptibility Assessments in Ambon, Indonesia, International Journal of Erosion Control Engineering, 2017.03.
13. Laura Sanchez-Castillo,Tetsuya Kubota,Hasnawir,Israel Cantu Silva , Influence of root reinforcement of forest species on the slope stability of Sierra Madre Oriental, Mexico, Journal of Faculty of Agriculture Kyushu University, 62, 1, 177-181, 2017.03.
14. Hasnawir,Tetsuya Kubota,Laura Sanchez-Castillo,Andang Suryana Soma, The influence of land use and rainfall on shallow landslides in Tanralili sub-watershed, Indonesia, Journal of Faculty of Agriculture Kyushu University, 62, 1, 171-176, 2017.03.
15. Aril Aditian, Tetsuya Kubota, The influence of Increasing Rainfall Intensity on Forest Slope Stability in Aso Volcanic Area, International Journal of Ecology and Development, Vol. 32, 1, 2017.01.
16. Laura Sanchez Castillo, Tetsuya Kubota, Israel Cantu Silva, Toshiyuki Moriyama, Hasnawir, A probability method of rainfall warning for sedimentrelated disaster in developing countries: a case study in Sierra Madre Oriental, Mexico, Natural Hazards, Springer, DOI 10.1007/s11069-016-2669-2, 85, 1893-1906, 2016.11.
17. Secondary landslide disaster induced by rainfalls after the Kumamoto Earthquake in 2016.
18. Landslide disaster induced by the Kumamoto Earthquake in 2016.
19. Aging of INSEM and INSEM structures in natural environments.
20. Laura Sanchez Castillo, Tetsuya Kubota, Israel Cantu Silva, Hasnawir, Critical Rainfall for the Triggering of Sediment Related Disasters under the Urban Forest Development in Nuevo Leon, Mexico, International Journal of Ecology and Development, Vol. 30, 1, 1-9, 2015.01.
21. CHARACTERISTICS OF THE DEBRIS FLOW TRAVELING IN 2014'S HIROSHIMA DISASTERS

.
22. Tetsuya Kubota, 中村 豪, Yoshinori Shinohara, Consideration to the early warning rainfall criteria of landslides after strong earthquakes in Japan
, INTERPRAEVENT 2014 in the Pacific Rim: Natural Disaster Mitigation to Establish Society with the Resilience , 190-191, 2014.11.
23. The influence of artificial structures including erosion control works on the torrent flow environment
.
24. Laura Sanchez Castillo, Tetsuya Kubota, Israel Cantu Silva, Root Strength Characteristics of Understory Vegetation Species for Erosion Mitigation on Forest Slopes of Mexico, International Journal of Ecology and Development, Vol. 29, 2, 1-8, 2014.05.
25. Laura Sanchez Castillo, Tetsuya Kubota, Israel Cantu Silva, Hasnawir, Rainfall Warning for Sediment Related Disasters in Sierra Madre Oriental, Mexico, INTERPRAEVENT 2014 in the Pacific Rim: Natural Disaster Mitigation to Establish Society with the Resilience , 25-28, 2014.11.
26. Aril Aditian, Tetsuya Kubota, Influence of Long-Term Increasing Trend of Maximum Hourly Rainfall on Slope Stability in Forested Area of Aso, Japan, INTERPRAEVENT 2014 in the Pacific Rim: Natural Disaster Mitigation to Establish Society with the Resilience , 162-163, 2014.11.
27. Hasnawir, Tetsuya Kubota, Laura Sanchez Castillo, Rainfall Thresholds for Sediment Related Disasters in Ambon City, Indonesia, INTERPRAEVENT 2014 in the Pacific Rim: Natural Disaster Mitigation to Establish Society with the Resilience , 74-75, 2014.11.
28. Bimala Devi Devkota, Prem Paudel, Tetsuya Kubota, Deepak K. C., Landslide and flood hazards consequences and community based management initiatives in Nepal Himalaya, INTERPRAEVENT 2014 in the Pacific Rim: Natural Disaster Mitigation to Establish Society with the Resilience , 72-73, 2014.11.
29. Tetsuya Kubota, Go Nakamura, Yoshinori Shinohara, Aril Aditian, Consideration on the influence of seismic activity on forest slope stability and landslide warning rainfall in the aftermath of the strong earthquake, Journal of Faculty of Agriculture Kyushu University, 59, 1, 163-167, 2014.02.
30. Aril Aditian, Tetsuya Kubota, Yoshinori Shinohara, Influence of increasing rain on slope stability in forested area in Northern Kyushu, Japan, 自然災害研究協議会西部地区部会報・論文集, 38, 17-20, 2014.02.
31. Consideration on the quality of INSEM (In situ Stabilized Excavated Material)
.
32. Difference of erosion in revegitation works with the difference of forest surface soil used.
33. Hasnawir, Tetsuya Kubota, Rainfall Threshold for Shallow Landslides in Kelara Watershed, Indonesia, International Journal of Erosion Control Engineering, Japan society of erosion control engineering, Vol. 5, 1, 86-92, 2012.04.
34. SEDIMENT RELATED DISASTERS IN THE ASO DISTRICT INDUCED BY THE HEAVY RAINFALL IN JULY 2012
.
35. SEDIMENT RELATED DISASTERS INDUCED BY THE HEAVY RAINFALL IN JULY 2012.
36. Laura Sanchez Castillo, 久保田 哲也, Israel Cantu Silva, Hurricane Incidence and Sediment Disasters under the Climate Change in Nuevo Leon, Mexico, 自然災害研究協議会西部地区部会報・論文集, 37, 73-76, 2013.02.
37. SEDIMENT RELATED DISASTERS IN THE MOUNTAIN RANGE OF NORTHERN KYUSHU DISTRICT INDUCED BY THE HEAVY RAINFALL IN JULY 2012
.
38. The characteristics of the landslide disaster and sediment runoff in Sierra Madre Oriental Mountain range, Mexico.
39. Tetsuya Kubota, Impacts of the Increased Rain Due to Climate Change on Shallow Landslides and Sediment Runoffs in Kyushu District, Japan, Advances in geosciences, 23, Hydrological Science , 63-73, Asia Oceania Geosciences Society, World Scientific Publishing, 2011.07.
40. The landslide disasters in northern Kyushu region due to the heavy rain in July 2010 and the impact of the climate change.
41. Hasnawir and T. Kubota, , Landslides susceptibility evaluation by 3-D slope stability analysis, case study in South Sulawesi, Indonesia, International Journal of Ecology & Development, 19, 1-14., 2011.06.
42. Consideration of regularity of sediment deposition in Hofu city in Yamaguchi prefecture by using radiocarbon dating.
43. Tetsuya Kubota, Impacts of the Increased Rain Due to Climate Change on Shallow Landslides and Sediment Runoffs in Kyushu District, Japan, Proc.Interpraevent 2010, 257-262, 2010.04.
44. Hasnawir, Tetsuya Kubota, Causes and effects of a sediment-related disaster in upper Jeneberang watershed, South Sulawesi, Indonesia, Journal Bulletin of Nepal Geological Society, 26, 29–34, Vol.26, pp29-34, 2009.10.
45. Hasnawir, Tetsuya Kubota, Estimation of landslide velocity and warning of sediment disaster due to intense rainfall, International Journal of Ecology & Development, 15, 1 – 13, VOl.15, pp1-13, 2009.12.
46. Debris disasters caused by heavy rainfall around Hofu City in Yamaguchi Prefecture on July 21, 2009.
47. Tetsuya Kubota, Israel Cantu Silva, Hasnawir, The warning standard rain of sediment runoff and shallow landslides along the mountainous torrent, Proc. of the 1st world landslide forum, pp325-328, 2008.11.
48. Impacts of the Increased Rain Due to Climate Change on Large Landslides and the Meteorological Condition .
49. P. Paudel, H. Omura, T. Kubota, B. Devkota, Characterization of terrain surface and mechanisms of sallow landsliding in upper Kurokawa watershed, Mt. Aso, western Japan, Bulletin of Engineering Geology and the environment, Springer, vol. 67, 87-95, 2008.02.
50. The accuracy of short term rain forecast information on the internet compared with surface pluviometers in the mountain range
.
51. Tetsuya KUBOTA, Diagnosis of synoptic meteorological condition of sediment related disasters in western Japan, Proc. of the Japan Korea Taiwan Symposium of sediment-related disasters, Japan Society of Erosion Control Engineering, 49-61, 2007.10.
52. P. Paudel, H. omura, T. Kubota, T. Inoue, Spatio-temporal patterns of historical shallow landslides in a volcanic area, Mt. Aso, Japan, Geomorphology, Elsevier, vol. 88, 21-33, 2007.06.
53. Elucidation of the warning rainfall criterion against landslide disasters at Eastern Sierra Madre range of Mexico, taking the soil moisture content into consideration.
54. Tetsuya KUBOTA, Prem Prasad PAUDEL, Hiroshi OMURA, The influence of forests on susceptibility factors for slope stability - Some typical case for shallow landslides in western Japan-, Proc. of the International Conference on Geotechnical Engineerong GEO-Singapore 2006December, pp111-118, 2006.12.
55. Landslide disasters by the Fukuoka earthquake and the comparizon with the ones induced by heavy rainfalls in 2005.
56. Effect of forest load on the slope stability with different forest types and various logging condition.
57. The meteorological characteristics of the landslide disasters in northern Kyushu in 2003, and the possibility of their prediction.
58. Diagnosis of synoptic-meso scale meteorological condition and prediction of landslide disasters -Typhoon and stationary front-.
Presentations
1. Elucidation of the landslides and the woody debris runoff induced by multiple causes mixed with downpours and earthquakes.
2. Elucidation of the forest slope devastation and woody debris runoff induced by the 2017 Northern Kyushu rain storm..
3. Elucidation of the landslides and the woody debris runoff induced by the Northern Kyushu downpour in 2017.
4. The characteristic of landslides and sediment related disaster in volcanic area.
5. Tetsuya Kubota,Tsuyoshi Takeda, The susceptibility analysis of landslides induced by earthquake in Aso volcanic area, Japan, scoping the prediction, European geosciences union (EGU) General Assembly 2017, 2017.04.
6. The characteristic of landslide distribution around the Aso central volcanic hillside - comparison among three strong rainfall events -.
7. Elucidation of the slope instability and the forest influence on landslides induced by the Kumamoto earthquake in 2016.
8. 久保田 哲也, Prem Prasad Paudel, A landslide susceptibility prediction on a sample slope in Kathmandu Nepal associated with the 2015's Gorkha Earthquake, European geosciences union (EGU) General Assembly 2016, 2016.04.
9. Andung Suryana Soma, 久保田 哲也, Derivate Factor for land use change to landslide occurrence triggered by rainfall at Ujung Loe watersheds, Indonesia, 平成28年砂防学会研究発表会, 2016.05.
10. Aril Aditian, 久保田 哲也, Landslide susceptibility study in Ambon city, Indonesia, 平成28年砂防学会研究発表会, 2016.05.
11. The characteristics of the debris flows at forest slopes in Hiroshima induced by heavy rainfall in 2014.
12. The influence of the forest root system against slope failures in 2014's Hiroshima disaster.
13. Woody Debris traveling characteristics in the Hiroshima's debris flow disaster in 2014.
14. Israel Cantu Silva, Medina G.R., González R.H., Gómez M.M., 久保田 哲也, Changes in Hydro-edaphological Properties Following Fire and Aerator Roller Treatments in Desert Microphylous and Rosetophylous Scrubland, Tropentag 2015, Management of land use system for enhanced food secutity-conflicts, controversies and resolutions, Berlin, Germany, Humboldt-Universitity, 2015.09.
15. 久保田 哲也, Israel Cantu Silva, Laura Sanchez Castillo, Hasnawir, The warning rainfall criteria based on the theory of debris flow runoff intensity, DFHM6 (6 -th international conference on debris flow hazards mitigation) 2015, 2015.06.
16. Aril Aditian, Eva Talakua, 久保田 哲也, Early results of regional landslide susceptibility study in Ambon city, Indonesia, 平成27年砂防学会研究発表会, 2015.05.
17. Laura Sanchez Castillo, 久保田 哲也, 森山聡之, Israel Cantu Silva, 発展途上国における土砂災害警戒雨量~メキシコの事例、Rainfall Warning for Sediment Related Disasters in Sierra Madre Oriental, Mexico
, 平成27年砂防学会研究発表会, 2015.05.
18. The difference in slope stabilizing effects of root system by forest management status.
19. 久保田 哲也, Aril Aditian, The Influence of the Climate Change on Landslide disasters in Western Japan-Hiroshima's case, European geosciences union (EGU) General Assembly 2015, 2015.04.
20. Tetsuya Kubota, The influence of increasing rain and earthquake activities on landslide slope stability in forest areas
, AGU (American Geophysical Union) Fall meeting 2014, 2014.12.
21. Tetsuya Kubota, Aril Aditian, The Influence of increasing Rain due to the Climate Change on Landslide Slope Stability in western Japan
, AOGS(Asia Oceania Geophysical Society) annual meeting 2014, 2014.08.
22. Laura Sanchez Castillo, 久保田 哲也, Israel Cantu Silva, Rainfall thresholds for the initiation of landslides in Nuevo Leon, Mexico
, AGU (American Geophysical Union) Fall meeting 2014, 2014.12.
23. Hasnawir, 久保田 哲也, Laura Sanchez Castillo, Developing a warning system in Ambon city, Indonesia: Rainfall threshold for sediment related disasters , AGU (American Geophysical Union) Fall meeting 2014, 2014.12.
24. Debris flow traveling characteristics in the Hiroshima disaster in 2014 August.
25. Aril Aditian, 久保田 哲也, Influences of increasing maximum hourly rainfall to slope stability in Aso city and Tame city, Japan, 平成26年砂防学会研究発表会, 2014.05.
26. Laura Sanchez Castillo, 久保田 哲也, Israel Cantu Silva, Maria Ines Yanez-Diaz, Tree Roots Tensile Strength concerning the forest slope stability in Nuevo Leon, Mexico, 平成26年砂防学会研究発表会, 2014.05.
27. Reduction rate of soil strength by strong earthquakes and its influence to forest slope stability.
28. 久保田 哲也, 篠原 慶規, Aril Aditian, Landslides induced by heavy rainfall in July 2012 in Northern Kyushu District, Japan and the influence of long term rainfall increase comparing with the slope destabilization due to strong seismic shaking, European geosciences union (EGU) General Assembly 2013, 2013.04.
29. Laura Sanchez Castillo, 久保田 哲也, Sediment related disasters induced by intense precipitation during Hurricane events in Nuevo Leon, Mexico, ISABE(The international symposium on agricultural and biosystem engineering)2013, 2013.08.
30. Aril Aditian, 久保田 哲也, Influence of increasing Rain due to Climate Change on Forest Slope Stability in Aso City, Kumamoto Prefecture, Japan
, ISABE(The international symposium on agricultural and biosystem engineering)2013, 2013.08.
31. Hasnawir, Laura Sanchez Castillo, 久保田 哲也, Characteristics of the root strength of understory vegetation for erosion control on forest slopes of Kelara Watershed, Indonesia, 2nd INAFOR(International conference of Indonesia forestry researchers) 2013, 2013.08.
32. Laura Sanchez Castillo, 久保田 哲也, Israel Cantu Silva, Hasnawir, The impact of Hurricane Alex in 2010 on sediment related disasters in Nuevo Leon, Mexico, 2nd INAFOR(International conference of Indonesia forestry researchers) 2013, 2013.08.
33. Hasnawir, 久保田 哲也, Investigation of sediment disasters in Ambon city, Indonesia, 平成25年砂防学会研究発表会, 2013.05.
34. Laura Sanchez Castillo, 久保田 哲也, Israel Cantu Silva, 篠原 慶規, Rainfall-induced sediment disasters during hurricane incident in Nuevo Leon, Mexico, 平成25年砂防学会研究発表会, 2013.05.
35. Tetsuya Kubota, Yoshinori Shinohara, Masanori Matsui, The impact of increasing rainfall due to the climate change on landslide slope stability in Kyushu district, Japan, 3rd International Conference on Forest and Water Conference, 2012.09.
36. Laura Sanchez Castillo, Tetsuya Kubota, Israel Silva Cantu, Hurricane incidence and sediment disasters under the Climate change, in Nuevo Leon, Mexico, 3rd International Conference on Forest and Water Conference, 2012.09.
37. Prem Paudel, B. Pudasaini, K. Terrakawa, Tetsuya Kubota, Landslide and flood hazards consequences and management options: a case study from Nepal Himalaya, 3rd International Conference on Forest and Water Conference, 2012.09.
38. Tetsuya Kubota, Consideration to the early warning rainfall criteria of landslides after strong earthquake in Japan, European geosciences union (EGU) General Assembly 2012, 2012.04.
39. The sediment related disasters in northern Kyushu district induced by the heavy rainfall in the Baiu rainy season in 2012.
40. The sediment related disasters in northern Kyushu district induced by the heavy rainfall in July 2012.
41. The Characteristics of the landslide disaster in Sierra Madre Oriental mountain range, Mexico.
42. The impact of increasing rainfall under the climate chnage on landslide slope stability and sediment run off.
43. The rainfall criteria of landslides after strong earthquake
.
44. The influence of artificial staructures for erosion control or forest roads to the torrent flow environment.
45. 久保田 哲也, Hasnawir, Laura Sanchez Castillo, Rainfall-induced landslides in South Sulawesi, Indonesia, 平成24年砂防学会研究発表会, 2012.05.
46. Shallow Landslides Distribution and Rainfall Threshold in Kelara Watershed, Indonesia.
47. The impact of increasing rainfall under the influence of climate change on forest slope landslides in Kyushu.
48. Climate Change and Influence of Understreet Vegetation Root Systems
.
49. Elucidation of the influence of forest tree load on the landslide slope stability using critical slip surface analysis .
50. The long term sediment runoff from montain ranges under the climate change.
51. The influence of Sabo facilities on the complex flow in torrents.
52. Shallow landslides investigation in Kelara watershed, Indonesia.
53. Influence of the root strength of herbaceous vegetation in forest slopes of Mexico.
54. The impact of increasing rainfall on landslide slope stability in Kyushu district, Japan.
55. Impacts of increasing rainfall due to the climate change on landslides in Kyushu district.
56. Impacts of the forest root system on the slope stability and slip surface depth by critical slip surface analysis
.
57. Impacts of the Increased Rain Due to Climate Change on Shallow Landslides and Sediment Runoffs in Kyushu District, Japan.
58. The early warning system of landslides and sediment runoffs using meteorological condition including rainfall-soil moisture index.
59. Impacts of the Increased Rain Due to Climate Change on Shallow Landslide and Sediment Runoff
in Kyushu District, Japan
.
60. Impacts of the Increased Rain due to Climate Change on the Sediment Runoff Fluctuation in Kyushu District, Japan
.
61. Impacts of climate change on shallow landslide and sediment runoff in Kyushu district, western Japan.
62. The warning standard rain of sediment runoff and shallow landslides along the mountainous torrent.
63. The characteristic of precipitation related to huge landslides and its long term trend in Kyushu.
64. The long term trend of heavy rain and meteorological condition prediction of landslide disasters.
65. The warning criteria analysis of sediment runoff, debris flows, shallow landslides along the mountainous torrent.
66. Elucidation of the warning rainfall criteria based on the theory of sediment runoff intensity.
67. The long term trend analysis of precipitation related to landslide disasters in Kyushu.
68. Influence of the forest on slope stability with different forest felling condition.
69. The warning and evacuation critical rainfall combined with soil moisture fluctuation at the Sierra Madre mountain range in eastern Mexico.
70. Landslide disasters induced by hurricane Emily at the earstern Mexico and the critical rainfall for warning and evacuation considering soil moisture content.
Membership in Academic Society
  • American Geophisical Union
  • European Geosciences Union
  • Asia Oceania Geosciences Society
  • Japan society of erosion control engineering
  • Japan landslide society
  • Japan society for natural disaster science
  • Japan forestry science
  • International Union of Forest Research Organization
  • Kyushu society of forestry science
  • Meteorological society of Japan
  • CAMJ (Certified and Accredited Meteorologists of Japan) Association
Educational
Educational Activities
Giving lectures and research instructions on forest conservation, forest survey, erosion control, landslide disasters, disaster meteorology, both at faculty and postgraduate school as well as at faculty of engineers in another private university. Also, I have experience in the education several times at the faculty of forest science in Nuevo Leon University in Mexico, in one national institute and 2 universities in Indonesia, another private universitie in Mexico, and 2 faculties at one university in Nepal.
Other Educational Activities
  • 2018.09, Co-supervisor in the master thesis (dissertation) related to forest slope environment in master course of forest science, post graduate school, Nuevo Leon University, Mexico..
  • 2017.06, Supervisor on the fieild investigation in Japan for a master course student related to forest slope environment in master course of forest science, post graduate school, Nuevo Leon University, Mexico..
  • 2013.09, Co-supervisor in the master thesis (dissertation) related to forest slope environment in master course of forest science, post graduate school, Nuevo Leon University, Mexico..
  • 2011.09, Co-supervisor in the master thesis (dissertation) related to forest slope environment in master course of forest science, post graduate school, Nuevo Leon University, Mexico..
  • 2009.08, Co-supervisor in the graduate thesis (dissertation) related to forest slope environment in faculty of forest science, Nuevo Leon University, Mexico..
  • 2008.09, Instruction in the field investigation method related to forest slope environment in faculty of forest science, Nuevo Leon University, Mexico..
  • 2004.11, Special lecture in Fukuoka-Tobata high school.
  • 2004.03, Editorin Special school text material related volcanic disaster for elementary school in Shimabara, Nagasaki area.
  • 2004.01, Instruction in a graduate thesis on the torrent environment and sound-scape for a student in Kyoto University of Education through the internet..
  • 2003.12, Open lecture and discussion on the forest conservation and slope disasters in a radio program for the students of Monterrey University, Monterrey, Mexico..
Social
Professional and Outreach Activities
 Having experiences as a expert in more than 12 international cooperation activities with the Japan International Cooperation Agency and a foreign municipal government, foreign universities etc. (China, Indonesia(4 times), Mexico(11times), Nepal(3times), Switzerland, Taiwan(6), Tanzania, Venezuela(4)). Domestic activities as a member in committees of government, local governments and regional officies of the national government. Also, concerning domestic issues, having the expert work in forest environment tax reform with prefectural government..