Development of multiscale and quantitative analysis technique of aerosol contained in ice core using small angle scattering

• Project/Area Number: 15K13567
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Nagaoka University of Technology
• Principal Investigator: Azuma Nobuhiko 長岡技術科学大学, 工学研究科, 学長 (70182996)
• Co-Investigator(Kenkyū-buntansha): 本間 智之 長岡技術科学大学, 工学研究科, 准教授 (50452082)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 人工氷 / クリープ / X線小角散乱 / 亜粒界 / 結晶粒 / 氷床 / 極地 / グリーンランド / 変形 / 雪氷 / レオロジー / TEM

Outline of Final Research Achievements

It is very important to know the behavior of aerosol contained in accumulated snow, which affects climate, in particular in the field of paleoclimate reconstruction and ice sheet modeling. In this study, in order to quantitatively evaluate aerosol particles in the accumulated snow and ice core obtained from Greenland and other north polar regions, we have developed measurement system of the particles using small angle X-ray scattering (SAXS) without melting ice samples. By thinning ice specimen for the SAXS measurement, the penetrative power of X-ray has been increased, and then the behavior of particles before and after the creep deformation is quantitatively evaluated. Based on these experiment, effect of particles on creep deformation has been clarified.

Research Products

• [Journal Article] Dispersion of nanoscale oxides in MnSi1.73 fabricated by solid state reaction and pulsed electric current sintering (2016)
  • Author(s): T. Homma, H. Mima, M. Nanko, M. Takeda
  • Journal Title: Applied Physics Letters Volume: 108 Issue: 10 Pages: 1039011-4
  • DOI: 10.1063/1.4943075
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Application of the Bons-Azuma method and determination of grain growth mechanism in rolled Ti-Zr alloys (2015)
  • Author(s): T. Homma, Y. Matayoshi, R. Voskoboinikov
  • Journal Title: Philosophical Magazine Letters Volume: 95 Issue: 12 Pages: 564-573
  • DOI: 10.1080/09500839.2015.1122243
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Japanese activities under EGRIP (East Greenland Ice Core Project) (2018)
  • Author(s): K. Goto-Azuma, F. Nakazawa, K. Kawamura, M. Hirabayashi, N. Nagatsuka, W. Shigeyama, J. Okuno, S. Fujita, H. Enomoto, T. Homma, T. Saruya, K. Nakajima, T. Homma, M. Takata, N. Azuma
  • Organizer: Fifth International Synmposium on Arctic Research
• [Presentation] Effect of solid particles on polycrystalline ice and its relations with rapid deformation of ice-age ice (2018)
  • Author(s): ：T. Saruya, K. Nakajima, M. Takata, T. Homma, N. Azuma, K. Goto-Azuma
  • Organizer: Fifth International Synmposium on Arctic Research
• [Presentation] Application of small angle X-ray scattering to fine particles dispersed in crept artificial ice samples (2017)
  • Author(s): T. Homma, N. Shinbo, W. Shigeyama, K. Nakajima, T. Saito, M.Takata, K. Goto-Azuma, N. Azuma
  • Organizer: The Seventh Synmposium on Polar Science
  • Int'l Joint Research
• [Presentation] Effect of impurities on deformation behaviour of fine grained artificial ice modeled on the EGRIP ice core (2017)
  • Author(s): T. Homma, K. Nakajima, T. Saruya, M. Takata, N. Azuma and K. Goto-Azuma
  • Organizer: NEGIS Workshop in 3rd EGRIP meeting
  • Int'l Joint Research
• [Presentation] Microstructural analysis of the NEEM ice core, Greenland by using electron backscatter diffraction (EBSD) (2017)
  • Author(s): W. Shigeyama, N. Nagatsuka, T. Homma, M. Takata, K. Goto-Azuma, I. Waikusat, M.R. Mrury, E.J.N. Kuiper, G.M. Pennock, R.V. Mateiu, N. Azuma, D.D. Jensen
  • Organizer: The Seventh Synmposium on Polar Science
• [Presentation] 東グリーンランド深層氷床掘削プロジェクト（EGRIP）における現地観測及び氷床コア解析計画 (2017)
  • Author(s): 東久美子、川村賢二、中澤文雄、平林幹啓、永塚尚子、繁山航、本間智之、宮原盛厚
  • Organizer: 雪氷研究大会（2017・十日町）
• [Presentation] 氷期氷の速い変形と固体微粒子の関連性について (2017)
  • Author(s): 猿谷友孝、中島甲葵、高田守昌、本間智之、東信彦、東久美子
  • Organizer: 雪氷研究大会（2017・十日町）
• [Presentation] 人工多結晶氷のクリープ変形に伴う微細組織の変化 (2017)
  • Author(s): 中島甲葵、猿谷友孝、高田守昌、本間智之、東信彦、東久美子
  • Organizer: 雪氷研究大会（2017・十日町）
• [Presentation] Effects of solid particles on crystal structures and mechanical properties of polycrystalline ice (2016)
  • Author(s): T. Saruya, K. Nakajima, T. Homma, M. Takata, N. Azuma, K. Goto-Azuma
  • Organizer: The Seventh Synmposium on Polar Science
  • Place of Presentation: 東京都立川市
  • Year and Date: 2016-11-29
  • Int'l Joint Research
• [Presentation] Effects of solid particles on deformation and texture/facbric evolution of ice (2016)
  • Author(s): W. Shigeyama, N. Nagatsuka, T. Homma, M. Takata, K. Goto-Azuma, I. Waikusat, M.R. Drury, E.J. Kuiper, G.M. Pennock, R.V. Mateiu, N. Azuma
  • Organizer: The Seventh Synmposium on Polar Science
  • Place of Presentation: 東京都立川市
  • Year and Date: 2016-11-29
  • Int'l Joint Research
• [Presentation] X線小角散乱を用いた人工氷中の超微粒子の定量解析 (2016)
  • Author(s): 新保尚敬、本間智之、高田守昌、東久美子、東信彦
  • Organizer: 雪氷研究大会（2016・名古屋）
  • Place of Presentation: 名古屋大学東山キャンパス
  • Year and Date: 2016-09-29
• [Presentation] 微細粒多結晶氷の塑性変形に及ぼす固体微粒子の影響 (2016)
  • Author(s): 猿谷友孝、中島甲葵、本間智之、高田守昌、東信彦、東久美子
  • Organizer: 雪氷研究大会（2016・名古屋）
  • Place of Presentation: 名古屋大学東山キャンパス
  • Year and Date: 2016-09-29
• [Presentation] 北東グリーンランド氷流での国際氷床深層掘削プロジェクトによる気候・氷床変動の研究 (2016)
  • Author(s): 東久美子, 川村賢二, 藤田秀二, 奥野淳一, 本山秀明, 阿部彩子, グレーベ・ラルフ, 齋藤冬樹, 本間智之, 東信彦, 榎本浩之, Dorthe Dahl-Jensen
  • Organizer: Japan Geoscience Union Meeting 2016
  • Place of Presentation: 千葉県幕張市
  • Year and Date: 2016-05-22
• [Presentation] Measurement of misorientation in ice crystals by using electron backscatter diffraction (EBSD) (2015)
  • Author(s): W. Shigeyama, N. Nagatsuka, T. Homma, M. Takata, K. Goto-Azuma, I. Waikusat, M.R. Drury, E.J. Kuiper, G. Pennock, N. Azuma
  • Organizer: The Sixth Synmposium on Polar Science
  • Place of Presentation: 日本, 東京都立川
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] Japanese participation in the new international deep ice core project in Greenland (EGRIP) under the ArCS project (2015)
  • Author(s): K. Goto-Azuma, K. Kwamura, S. Fujita, J. Okuno, A. Abe-Ouchi, R. Greve, F. Saito, T. Homma, N. Azuma, H. Motoyama, H. Enomoto, D. Dahl-Jensen
  • Organizer: The Sixth Synmposium on Polar Science
  • Place of Presentation: 日本, 東京都立川
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] 電子線後方散乱回折法を用いた氷の結晶方位に向けた技術開発 (2015)
  • Author(s): 繁山航、永塚尚子、本間智之、高田守昌、東久美子、R.V. Mateiu、東信彦
  • Organizer: 日本雪氷学会 雪氷研究大会
  • Place of Presentation: 信州大学理学部
  • Year and Date: 2015-09-13