八久保 晶弘 HACHIKUBO Akihiro

学位

学歴

職歴

担当授業科目（学部）

環境防災工学概論　地球環境（2020年度以前入学）, 物理I 地球環境CD, 物理II 地球環境CD, 物理実験 地球環境CD, 環境防災総合工学I　環境防災, 環境防災総合工学II　環境防災, 気象学　環境防災, 環境化学実験　環境防災, 環境防災キャリアアップ総合演習　環境防災, ガスハイドレート概論　環境防災, コース概論　地球環境, オホーツク地域と環境　地球環境, オホーツク地域と環境　地域未来, 地球環境工学入門/短期履修, 地球環境工学入門　地球環境（2020年度以前入学）

担当授業科目（大学院）

雪氷ハイドレート環境特論III　社会環境, 地球科学特論　寒冷地・環境・エネルギー

専門分野

雪氷学, 気象学, 結晶物理学, 地球化学

研究テーマ

天然ガスハイドレートの形成過程, ガスハイドレートの同位体分別, ガスハイドレートの熱物性, 雪氷・ガスハイドレート比表面積測定, 雪面熱収支, 積雪層構造, 積雪内弱層の形成過程, 積雪内の安定同位体変化

研究内容キーワード

ガスハイドレート, 安定同位体, 同位体分別, 熱分析, 比熱, 潜熱, ラマン分光法, バイカル湖, オホーツク海, 雪氷面熱収支, 積雪比表面積, 積雪, 弱層, 表面霜, しもざらめ雪

所属学会

アメリカ地球物理学連合, 日本地球惑星科学連合, 日本雪氷学会, 日本気象学会, 日本エネルギー学会

学術論文

論文名／掲載誌名等			掲載年月
Effect of wind on surface hoar growth on snow Journal of Geophysical Research, 102, D4, 4367-4373			1997-02
Fluctuation of δ18O of surface snow with surface hoar and depth hoar formation Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology, 11, 94-102			1997-11
Daytime preservation of surface hoar crystals Annals of Glaciology, 26, 22-26			1998-08
Effects of snow physical parameters on spectral albedo and bidirectional reflectance of snow surface Journal of Geophysical Research, 105, D8, 10219-10236			2000-04
霜結晶による積雪表層の安定同位体分別過程 雪氷, 62, 3, 265-277			2000-05
「固体降水量評価に関する研究会」の報告 雪氷, 62, 4, 375-383			2000-07
Section planes of snow specimens visualized with sudan black B Polar Meteorology and Glaciology, 14, 103-109			2000-11
Isotopic mass fractionation of snow due to depth hoar formation Polar Meteorology and Glaciology, 14, 1-7			2000-11
Observations and simulations of the formation of the faceted snow crystals in the weak-layer of the 1998 Niseko Haru no Taki avalanche Cold Regions Science and Technology, 31, 3, 235-247			2000-12
Numerical modelling of surface hoar growth and comparison with field measurements Annals of Glaciology, 32, 27-32			2001-08
Effects of snow physical parameters on shortwave broadband albedos Journal of Geophysical Research, 108, D19, doi:10.1029/2003JD003506			2003-10
Three-dimensional MR microscopy of snowpack structures Cold Regions Science and Technology, 37, 3, 385-391			2003-11
Formation and dissociation processes of gas hydrate composed of methane and carbon dioxide below freezing Ocean and Polar Research, 26, 3, 515-521			2004-09
SNOWPACK model simulations for snow in Hokkaido, Japan Annals of Glaciology, 38, 123-129			2004-12
Hydrate bearing structures mapped in the Sea of Okhotsk (CHAOS project) Eos, Transactions, American Geophysical Union, 86, 2, 13-24			2005-01
Reflective properties of natural snow: approximate asymptotic theory versus in situ measurements IEEE Transactions on Geoscience and Remote Sensing, 43, 7, 1529-1535			2005-07
Lattice expansion of clathrate hydrates of methane mixtures and natural Gas Angewandte Chemie International Edition, 44, 42, 6928-6931			2005-10
Formation experiments of CO<sub>2</sub> hydrate chimney in a pressure cell Polar Meteorology and Glaciology, 19, 42-49			2005-11
Structure and thermal expansion of natural gas clathrate hydrates Chemical Engineering Science, 61, 2670-2674			2006-01
In-situ measured spectral directional emissivity of snow and ice in the 8-14 μm atmospheric window Remote Sensing of Environment, 100, 4, 486-502			2006-02
Snow bidirectional reflectance model using non-spherical snow particles and its validation with field measurements EARSeL eProc. 3 Observing our Cryosphere from Space, S. Wunderle (Ed), 5, 2, 137-145			2006-03
Monte Carlo simulations of spectral albedo for artificial snowpacks composed of spherical and non-spherical particles Applied Optics, 45, 21, 5310-5319			2006-07
Coexistence of structure I and II gas hydrates in Lake Baikal suggesting gas sources from microbial and thermogenic origin Geophysical Research Letters, 33, L24603, doi:10.1029/2006GL028296			2006-12
Estimation of gas composition and cage occupancies in CH<sub>4</sub>-C<sub>2</sub>H<sub>6</sub> hydrates by CP-MAS <sup>13</sup>C NMR Technique Journal of the Japan Petroleum Institute, 50, 3, 132-138			2007-05
ADEOS-II/GLI snow/ice products - Part II: Validation results using GLI and MODIS data Remote Sensing of Environment, 111, 274-290			2007-11
Isotopic fractionation of methane and ethane hydrates between gas and hydrate phases Geophysical Research Letters, 34, L21502, doi:10.1029/2007GL030557			2007-11
First discovery and formation process of authigenic siderite from gas hydrate-bearing mud volcanoes in fresh water: Lake Baikal, Eastern Siberia Geophysical Research Letters, 35, L05405, doi:10.1029/2007GL032917			2008-03
Crystallization of authigenic carbonates in the mud volcanoes at Lake Baikal Geochemistry International, 46, 10, 985-995			2008-10
2007年11月に北海道上ホロカメットク山で連続発生した雪崩 雪氷, 70, 6, 571-580			2008-11
オホーツク海天然ガスハイドレートの同位体組成とその結晶特性 地学雑誌, 118, 1, 207-221			2009-03
オホーツク海のメタンハイドレートとプルーム 地学雑誌, 118, 1, 175-193			2009-03
オホーツク海のメタンハイドレート含有層における間隙水の地球化学 地学雑誌, 118, 1, 194-206			2009-03
Natural gas hydrates with locally different cage occupancies and hydration numbers in Lake Baikal Geochemistry Geophysics Geosystems, 10, Q05003, doi:10.1029/2009GC002473			2009-05
Gas hydrate forming fluids on the NE Sakhalin slope, Sea of Okhotsk Sediment-hosted gas hydrates:New Insights on Natural and Synthetic Systems, The Geological Society, London, Special Publications, 319, 51-72			2009-08
Model of formation of double structure gas hydrates in Lake Baikal based on isotopic data Geophysical Research Letters, 36, L18504, doi:10.1029/2009GL039805			2009-09
メタン・エタンからなる混合ガスハイドレートの解離熱 雪氷, 71, 5, 341-351			2009-09
Molecular and isotopic characteristics of gas hydrate-bound hydrocarbons in southern and central Lake Baikal Geo-Marine Letters, 30, 321-329			2010-06
Isotopic composition of dissolved inorganic carbon in subsurface sediments of gas hydrate-bearing mud volcanoes, Lake Baikal: implications for methane and carbonate origin Geo-Marine Letters, 30, 427-437			2010-06
Isotopic composition of gas hydrates in subsurface sediments from offshore Sakhalin Island, Sea of Okhotsk Geo-Marine Letters, 30, 313-319			2010-06
しもざらめ雪・あられ・降雪結晶からなる弱層のせん断強度変化の観測例 雪氷, 73, 2, 133-142			2011-03
Calorimetric and powder X-ray diffraction studies on dissociation of methane hydrate in porous media Physics and Chemistry of Ice 2010, 12th International Conference on the Physics and Chemistry of Ice, 197-202			2011-03
Preservation phenomena of methane hydrate in pore spaces Physical Chemistry Chemical Physics, 13, 17449-17452			2011-09
日本海東縁ガスハイドレート調査（MD179）で得られた海底表層堆積物中の間隙水溶存ガス分析 石油技術協会誌, 77, 4, 268-273			2012-09
日本海東縁ガスハイドレート調査（MD179）における間隙水の地球化学 石油技術協会誌, 77, 4, 262-267			2012-09
表層型ガスハイドレート賦存海底・湖底地盤から採取した堆積土の土質特性－間隙水溶存ガスの気化に伴う堆積土の試料乱れ評価－ 地盤工学ジャーナル, 7, 4, 503-516			2012-12
Thermal anomalies associated with shallow gas hydrates in the K-2 mud volcano, Lake Baikal Geo-Marine Letters, 32, 5-6, 407-417			2012-12
Molecular and isotopic composition of hydrate-bound and sediment gases in the southern basin of Lake Baikal, based on an improved headspace gas method Geo-Marine Letters, 32, 5-6, 465-472			2012-12
Possible variation in methane flux caused by gas hydrate formation off Sakhalin Island, Russia Geo-Marine Letters, 32, 5-6, 525-534			2012-12
Raman spectroscopic and calorimetric observations on natural gas hydrates obtained from southern and central Lake Baikal Geo-Marine Letters, 32, 5-6, 419-426			2012-12
Gas hydrate of Lake Baikal: Discovery and varieties Journal of Asian Earth Sciences, 62, 162-166			2013-01
天然ガスハイドレート結晶構造に及ぼすガスの組成とその起源 ―ロシア・バイカル湖の結晶構造II型ハイドレートの例― 低温科学, 71			2013-03
A physicochemical model for the formation of gas hydrates of different structural types in K-2 mud volcano (Kukui Canyon, Lake Baikal) Russian Geology and Geophysics, 54, 475-482			2013-04
Methane clathrate hydrates formed within hydrophilic and hydrophobic media: kinetics of dissociation and distortion of host structure Journal of Physical Chemistry C, 117, 7081-7085			2013-04
Modeling angular dependent spectral emissivity of snow and ice in the thermal infrared atmospheric window Applied Optics, 52, 30, 7243-7255			2013-10
Sequentially sampled gas hydrate water, coupled with pore water and bottom water isotopic and ionic signatures at the Kukuy mud volcano, Lake Baikal: ambiguous deep-rooted source of hydrate-forming water Geo-Marine Letters, 34, 2-3, 241-251			2014-05
Effects of temperature and grain type on time variation of snow specific surface area Bulletin of Glaciological Research, 32			2014-06
Distinct microbial communities thriving in gas hydrate-associated sediments from the eastern Japan Sea Journal of Asian Earth Sciences, 90, 243-249			2014-08
Distribution of butane in the host water cage of structure II clathrate hydrates Chemistry A European Journal, 20, 51, 17207-17213			2014-12
In-situ measurements of polarization properties of snow surface under the Brewster geometry in Hokkaido, Japan and northwest Greenland ice sheet Journal of Geophysical Research: Atmospheres, 119, 24, 13946-13964			2014-12
Manifestation of carbonate–barite mineralization around methane seeps in the Sea of Okhotsk (the western slope of the Kuril Basin) Oceanology, 55, 3, 390-399			2015-05
Molecular and isotopic composition of volatiles in gas hydrates and in pore water from Joetsu Basin, eastern margin of Japan Sea Energies, 8, 4647-4666			2015-05
サハリン北東沖の海底表層型メタンハイドレート―間隙水中の溶存イオンによるメタンフラックス評価― 低温科学, 74, 153-161			2016-03
Biogeochemical cycle of methanol in anoxic deep-sea sediments Microbes and Environments, 31, 2, 190-193			2016-06
細孔中に生成したメタンハイドレートの熱分析およびメタン安定同位体分析 雪氷, 78, 5, 281-290			2016-09
Geochemical Characteristics of Methane from Sediments of the Underwater High Posolskaya Bank (Lake Baikal) Lithology and Mineral Resources, 52, 2, 102-110			2017-03
Mechanism of authigenic rhodochrosite formation in the near-bottom sediments of the Saint-Petersburg-2 gas-hydrate-bearing structure (central basin of the Baikal Lake) Neftegazovaya Geologiya. Teoriya I Praktika, 12, 1			2017-03
Physical and thermal properties of mud-dominant sediment from the Joetsu Basin in the eastern margin of the Japan Sea Marine Geophysical Research, 38, 393-407			2017-05
サハリン島沖の海底表層型ガスハイドレート 雪氷, 79, 4, 339-348			2017-07
Age of mud breccia from mud volcanoes in Academician Ridge, Lake Baikal Geodynamics and Tectonophysics, 8, 4, 923-932			2017-12
Effect of Temperature and Large Guest Molecules on the C–H Symmetric Stretching Vibrational Frequencies of Methane in Structure H and I Clathrate Hydrates RSC Advances, 8, 3237-3242			2018-01
Phase equilibrium of isotopologue methane hydrates enclathrated CH3D and CD4 Journal of Chemical & Engineering Data, 63, 6, 2266-2270			2018-05
Authigenic rhodochrosite from a gas hydrate-bearing structure in Lake Baikal International Journal of Earth Sciences, 107, 6, 2011-2022			2018-09
道東沖オホーツク海海底地盤における重力式コーン貫入試験 土木学会論文集B3（海洋開発）, 74, 2, 868-873			2018-09
Hydrogen and oxygen isotopic anomalies in pore waters suggesting clay mineral dehydration at gas hydrate-bearing Kedr mud volcano, southern Lake Baikal, Russia Geo-Marine Letters, 38, 5, 403-415			2018-10
Hydrocarbon molecular markers in bottom sediments of focused fluid discharge zones of Lake Baikal Neftegazovaya Geologiya. Teoriya I Praktika, 13, 4			2018-11
Gas hydates in Lake Baikal Limnology and Freshwater Biology, 1, 66-70			2018-11
天然ガスハイドレートの地球化学的調査―ゲストガス安定同位体比がもたらす情報― えねるみくす, 98, 56-59			2019-01
人工メタンハイドレートにおける包接メタンと気相メタンの交換 石油技術協会誌, 84, 2, 162-165			2019-03
Shallow-rooted mud volcanism in Lake Baikal Marine and Petroleum Geology, 102, 580-589			2019-04
Structure and density comparison of noble gas hydrates encapsulating xenon, krypton and argon ChemPhysChem, 20, 2518-2524			2019-08
Structural studies of Lake Baikal natural gas hydrates Journal of Structural Chemistry, 60, 9, 1437-1455			2019-10
Measurement of specific surface area of fresh solid precipitation particles in heavy snowfall regions of Japan The Cryosphere, 13, 2713-2732			2019-10
Hydrocarbon Gases of the Gorevoi Utes Underwater Oil-Gas Seep (Lake Baikal, Russia) Russian Geology and Geophysics, 60, 10, 1188-1194			2019-10
Upwarding gas source and postgenetic processes in the shallow sediments from the ARAON Mounds, Chukchi Sea Journal of Natural Gas Science and Engineering, 76, 103223			2020-04
Effect of temperature and large guest molecules on the C–H symmetric stretching vibrational frequencies of methane in structure H and I clathrate hydrates RSC Advances, 10, 17473-17478			2020-05
Effects of snow grain shape and mixing state of snow impurity on retrieval of snow physical parameters from ground‐based optical instrument Journal of Geophysical Research: Atmospheres, 125, e2019JD031858			2020-07
Stable isotopic evidence for microbial ethane in Lake Baikal gas hydrates Limnology and Freshwater Biology, 3, 1, 918-919			2020-09
Characteristics of hydrate-bound gas retrieved at the Kedr mud volcano (southern Lake Baikal) Scientific Reports, 10, 14747			2020-09
The reconstruction of the mechanisms of problematic authigenic carbonates formation in diagenetic and catagenetic environments associated with the generation/oxidation of hydrocarbons Limnology and Freshwater Biology, 3, 1, 928-930			2020-09
Carbon isotopic fractionation of carbon dioxide between gas and hydrate phases Limnology and Freshwater Biology, 3, 1, 926-927			2020-09
Isotopic difference between hydrate-bound and sediment gases retrieved at Lake Baikal Limnology and Freshwater Biology, 3, 1, 924-925			2020-09
Hydrogen isotopic fractionation of methane at the formation of synthetic mixed-gas hydrate composed of methane and propane Limnology and Freshwater Biology, 3, 1, 920-921			2020-09
Methane with abnormally high δ13C and δD values from the coastal hot springs in Lake Baikal Lithology and Mineral Resources, 44, 439-444			2020-10
Temperature effects on the C-H symmetric stretching vibrational frequencies of guest hydrocarbon molecules in 5^12, 5^12 6^2 and 5^12 6^4 cages of sI and sII clathrate hydrates RSC Advances, 10, 37582, 37587			2020-10
X-Ray attenuation and image contrast in the X-ray computed tomography of clathrate hydrates depending on guest species Physical Chemistry Chemical Physics, 22, 27658-27665			2020-11
SIGMA及び関連プロジェクトによるグリーンランド氷床上の大気・雪氷・雪氷微生物研究 − ArCS IIプロジェクトへのつながり − 雪氷, 83, 2, 169-191			2021-03
Dissociation kinetics of propane–methane and butane–methane hydrates below the melting point of ice Physical Chemistry Chemical Physics, 23, 15003-15009			2021-05
Carbon isotope fractionation during the formation of CO2 hydrate and equilibrium pressures of 12CO2 and 13CO2 hydrates Molecules, 26, 14, 4215			2021-07
A long-lived center of gas-fluid emanations on the western slope of the Kuril Basin (Sea of Okhotsk) Lithology and Mineral Resources, 56, 4, 309-332			2021-07
Spectral degree of linear polarization and neutral points of polarization in snow and ice surfaces Journal of Quantitative Spectroscopy and Radiative Transfer, 273, 107845			2021-10
塩を含む積雪の含水率測定法 雪氷, 83, 6, 579-590			2021-11
Phase equilibrium of methane hydrate encapsulated isotopologue 13CH4 and singly deuterated methane Journal of Chemical & Engineering Data, 66, 12, 4663-4669			2021-11
Distortion of the host water cages of structure I gas hydrates: structural analysis of C2H4 hydrate by powder X-ray diffraction The Journal of Physical Chemistry C, 125, 51, 28150-28156			2021-12
The position of gas hydrates in the sedimentary strata and in the geological structure of Lake Baikal In: Mienert J., Berndt C., Tréhu A.M., Camerlenghi A., Liu CS. (eds) World Atlas of Submarine Gas Hydrates in Continental Margins, 465-471			2022-01
Crystal structure and guest distribution of N2O hydrate determined by powder X-ray diffraction measurements Crystal Growth & Design, 22, 2, 1345-1351			2022-01
硫化水素ハイドレートの結晶構造 SPring-8/SACLA利用研究成果集, 10, 2, 171-175			2022-04
A New oil and gas seep in Lake Baikal Petroleum Chemistry, 62, 475-481			2022-05
Impact of high methane flux on the properties of pore fluid and methane-derived authigenic carbonate in the ARAON Mounds, Chukchi Sea Frontiers in Marine Science, 13			2022-07
Dissociation kinetics and metastability of carbon monoxide hydrates correlating with phase change in water ice J. Phys. Chem. C, 126, 30, 12391-12398			2022-07
Effect of pressure on the hydration number of argon hydrate Journal of Chemical & Engineering Data, 67, 3757-3762			2022-11
Sublacustrine canyons of the South and Central Basins of Lake Baikal as a result of interaction of tectonic, lithological and climatic factors Quaternary International, 644-645, 29-40			2023-01
Surface heat flow measurements in the eastern margin of the Japan Sea using a 15 m long geothermal probe to overcome large bottom-water temperature fluctuations Marine Geophysical Research, 44, 2			2023-01
Observation of hydrogen bonding network in hydrogen sulfide hydrate using neutron diffraction Chemical Physics Letters, 812, 140274			2023-02
Stable isotope fractionation of nitrogen between gas and hydrate phases Journal of Chemical & Engineering Data, 68, 3, 694-697			2023-02
Characteristics and varieties of gases enclathrated in natural gas hydrates retrieved at Lake Baikal Scientific Reports, 13			2023-03
Effect of pressure on hydrogen isotope fractionation in methane during methane hydrate formation at temperatures below the freezing point of water Methane, 2			2023-04
Development of a handheld integrating sphere snow grain sizer (HISSGraS) Annals of Glaciology, 1-12			2023-11
Microstructural study on dissolution of natural methane hydrate by multi-contrast and multi-scale X-ray computed tomography The Journal of Physical Chemistry C			2023-12

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