横山 正TADASHI YOKOYAMA

Last Updated :2018/01/13

所属・職名
大学院総合科学研究科 環境自然科学講座 准教授
メールアドレス
t-yokoyamahiroshima-u.ac.jp
自己紹介
専門:岩石-水相互作用、地質媒体中の物質移動

基本情報

学歴

  • 東京大学, 地球惑星科学専攻

学位

  • 修士(理学) (東京大学)
  • 博士(理学) (東京大学)

教育活動

授業担当

  1. 2017年, 教養教育, 2ターム, 地球科学A-地球の解体-
  2. 2017年, 教養教育, 4ターム, 地球科学B-生きている地球-
  3. 2017年, 教養教育, セメスター(前期), 地学実験法・同実験[1理地]
  4. 2017年, 教養教育, セメスター(前期), 地学実験法・同実験[1教自,2理生]
  5. 2017年, 教養教育, セメスター(前期), 地学実験法・同実験[2理化]
  6. 2017年, 教養教育, セメスター(後期), 地球とその環境
  7. 2017年, 教養教育, 1ターム, 教養ゼミ
  8. 2017年, 学部専門, 集中, 自然環境野外実習
  9. 2017年, 学部専門, セメスター(後期), 地学基礎実験
  10. 2017年, 学部専門, セメスター(後期), 地学基礎実験法
  11. 2017年, 学部専門, セメスター(後期), 自然環境実験A
  12. 2017年, 学部専門, セメスター(後期), 自然環境実験法A
  13. 2017年, 学部専門, セメスター(前期), 自然環境実験B
  14. 2017年, 学部専門, セメスター(前期), 自然環境実験法B
  15. 2017年, 学部専門, セメスター(前期), 自然環境実験C
  16. 2017年, 学部専門, セメスター(前期), 自然環境実験法C
  17. 2017年, 学部専門, セメスター(後期), 自然環境演習
  18. 2017年, 学部専門, 4ターム, 環境鉱物学
  19. 2017年, 修士課程・博士課程前期, セメスター(前期), 総合科学演習
  20. 2017年, 修士課程・博士課程前期, セメスター(後期), 総合科学演習
  21. 2017年, 修士課程・博士課程前期, 3ターム, 地球構成物質論

研究活動

学術論文(★は代表的な論文)

  1. ★, The effects of charge, polymerization, and cluster size on the diffusivity of dissolved Si species in pore water, Geochimica et Cosmochimica Acta, 2018 in press
  2. Permeability of porous media: Role of the critical pore size, Journal of Geophysical Research, 122巻, pp.1-pp.17, 20170817
  3. 露頭スケールからナノスケールまでの反応-輸送過程, 地学雑誌, 126巻, 3号, pp.297-pp.310, 2017
  4. 岩石内部の水の分布-露頭スケールからナノスケールまで-, 地学雑誌, 126巻, 3号, pp.311-pp.323, 2017
  5. An experimental study on the rate and mechanism of capillary rise in sandstone, Progress in Earth and Planetary Science, 3巻, 8号, pp.1-pp.10, 20160428
  6. 化学風化の速度論:流紋岩風化の野外調査,室内実験および理論解析, 岩石鉱物科学, 44巻, pp.45-pp.51, 2015
  7. Estimation of permeability of sedimentary rocks by applying water-expulsion porosimetry to Katz and Thompson model, Engineering Geology, 177巻, pp.75-pp.82, 2014
  8. Calcium Silicate Hydrate Formation Rates during Alkaline Alteration of Rocks as revealed by Infrared Spectroscopy, Rock Mechanics for Global Issues - Natural Disasters, Environment and Energy -Proceedings of the 2014 ISRM International Symposium -8th Asian Rock Mechanics Symposium, pp.2002-pp.2009, 2014
  9. Diffusivity of dissolved silica in rock pore water at 25℃ as characterized by through-diffusion experiments, Water Resources Research, Water Resources Research, 49巻, pp.8299-pp.8309, 2013
  10. Does the reactive surface area of sandstone depend on water saturation?--The role of reactive-transport in water film, Geochimica et Cosmochimica Acta, 122巻, pp.153-pp.169, 2013
  11. ★, Characterization of the reaction and transport properties of porous rhyolite and its application to the quantitative understanding of the chemical weathering rate, Geochimica et Cosmochimica Acta, 118巻, pp.295-pp.311, 2013
  12. Role of water film in weathering of porous rhyolite under water unsaturated condition., Procedia Earth and Planetary Science, 7巻, pp.916-pp.919, 2013
  13. Estimation of water film thickness in geological media associated with the occurrence of gas entrapment, Procedia Earth and Planetary Science, 7巻, pp.620-pp.623, 2013
  14. Size distributions of pore water and entrapped air during drying-infiltration processes of sandstone characterized by water-expulsion porosimetry, Water Resources Research, 48巻, pp.W09556, 2012
  15. Solute distribution in porous rhyolite as evaluated by sequential centrifugation, Applied Geochemistry, 26巻, pp.1524-pp.1534, 2011
  16. Hydration-dehydration interactions between glycine and anhydrous salts: Implications for a chemical evolution of life, Geochimica et Cosmochimica Acta, 75巻, pp.6285-pp.6299, 2011
  17. Effects of pH and temperature on dimerization rate of glycine: Evaluation of favorable environmental conditions for chemical evolution of life, Geochimica et Cosmochimica Acta, 74巻, pp.6841-pp.6851, 2010
  18. Temperature dependence of molecular structure of dissolved glycine as revealed by ATR-IR spectroscopy, Journal of Molecular Structure, 981巻, pp.179-pp.186, 2010
  19. 中国海南島産テクタイトの希ガス組成と含水量について, 地球化学, 44巻, pp.43-pp.50, 2010
  20. Characterization of the states and diffusivity of intergranular water in a chalcedonic quartz by high-temperature in situ infrared spectroscopy, Mineralogical Magazine, 73巻, pp.825-pp.835, 2009
  21. In situ ATR-IR investigation of L-lysine adsorption on montmorillonite, Journal of Colloid and Interface Science, 338巻, pp.395-pp.401, 2009
  22. ★, Porosimetry of vesicular volcanic products by a water-expulsion method and the relationship of pore characteristics to permeability, Journal of Geophysical Research, 114巻, pp.B02201, 2009
  23. Kinetics of biotite dissolution and Fe behavior under low O2 conditions and their implications for Precambrian weathering, Geochimica et Cosmochimica Acta, 73巻, pp.3767-pp.3781, 2009
  24. Effect of density-driven flow on the through-diffusion experiment, Journal of Contaminant Hydrology, 106巻, pp.166-pp.172, 2009
  25. ATR-IR spectroscopic study of L-lysine adsorption on amorphous silica, Journal of Colloid and Interface Science, 329巻, pp.31-pp.37, 2009
  26. Hydration of rhyolitic glass during weathering as characterized by IR microspectroscopy, Geochimica et Cosmochimica Acta, 72巻, pp.117-pp.125, 2008
  27. Clay mineral reactions caused by frictional heating during an earthquake: An example from the Taiwan Chelungpu fault, Geophysical Research Letters, 35巻, pp.L16303-pp.L16303, 2008
  28. Color measurements of volcanic ash deposits from three different styles of summit activity at Sakurajima volcano, Japan: Conduit processes recorded in color of volcanic ash, Journal of Volcanology and Geothermal Research,, 178巻, pp.81-pp.93, 2008
  29. A chemical kinetic approach to estimate dynamic shear stress during the 1999 Taiwan Chi-Chi earthquake, Geophysical Research letters, 34巻, pp.L19308, 2007
  30. Field and laboratory experiments on weathering rates of granodiorite: Separation of chemical and physical processes, Geology, 34巻, pp.809-pp.812, 2006
  31. Diffusivity anisotropy in a rhyolite and its relation to pore structure, Engineering Geology, 80巻, pp.328-pp.335, 2005
  32. Color development of iron oxides during rhyolite weathering over 52,000 years, Chemical Geology, 219巻, pp.309-pp.320, 2005
  33. Chemical weathering rates of rhyolite -Field and laboratory-., Physicochemistry of Water in Geological and Biological Systems, pp.103-pp.113, 2004
  34. 神津島流紋岩質単成火山群のESR年代, 火山, 49巻, pp.23-pp.32, 2004
  35. Biotite dissolution processes and mechanisms in the laboratory and in nature: Early stage weathering environment and vermiculitization., American Mineralogist,, 88巻, pp.377-pp.386, 2003
  36. マイクロフォーカスX線CT装置を用いた堆積物・岩石の内部構造の非破壊観察, 地質学雑誌, 108巻, pp.606-pp.609, 2002
  37. ★, Direct determinations of the rates of rhyolite dissolution and clay formation over 52,000 years and comparison with laboratory measurements, Geochimica et Cosmochimica Acta, 66巻, pp.2665-pp.2681, 2002
  38. Dissolution rate and weathering of porous rhyolites from Izu-Kozu Island, Japan, of the 5th International Symposium on Geochemistry of the Earth's Surface, pp.407-pp.410, 1999