Development of sediment chronologies with amino acid radiocarbon dating

• Project/Area Number: 25247092
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geochemistry/Cosmochemistry
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: Ohkouchi Naohiko 国立研究開発法人海洋研究開発機構, 生物地球化学研究分野, 分野長 (00281832)
• Co-Investigator(Kenkyū-buntansha): Yoneda Minoru 東京大学, 総合研究博物館, 教授 (30280712)
• Co-Investigator(Renkei-kenkyūsha): Yokoyama Yusuke 東京大学, 大気海洋研究所, 教授 (10359648)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥43,420,000 (Direct Cost: ¥33,400,000、Indirect Cost: ¥10,020,000); Fiscal Year 2015: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000); Fiscal Year 2014: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000); Fiscal Year 2013: ¥24,050,000 (Direct Cost: ¥18,500,000、Indirect Cost: ¥5,550,000)
• Keywords: 放射性炭素年代 / アミノ酸 / 放射性炭素 / 堆積物

Outline of Final Research Achievements

We have developed a method to isolate and purify amino acids from the natural materials including sediments for radiocarbon measurement. HPLC/fraction collection and the following recrystalization are useful methods for this purpose. Based on the method we have developed, we measured amino acids from known-aged natural samples. The obtained radiocarbon ages are quite consistent with the expected ages. The results suggested that the radiocarbon age of amino acids are useful for the chronological tool.

Research Products

• [Journal Article] Widespread collapse of the Ross Ice Shelf during the late Holocene. (2016)
  • Author(s): Yokoyama, Y., Anderson, J. B., Yamane, M., Simikins, L. M., Miyairi, Y., Yamazaki, T., Koizumi, M., Suga, H., Kusahara, K., Prothro, L., Hasumi, H., Southon, J. R., and Ohkouchi, N.
  • Journal Title: Proceedings of National Academy of Science, USA Volume: 113 Issue: 9 Pages: 2354-2359
  • DOI: 10.1073/pnas.1516908113
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Chlorophyll a specific Δ14C, δ13C, and δ15N values in stream periphyton: implications for aquatic food web studies. (2015)
  • Author(s): Ishikawa, N. F., Yamane, M., Suga, H., Ogawa, N. O., Yokoyama, Y., and Ohkouchi, N.
  • Journal Title: Biogeosciences Volume: 12 Issue: 22 Pages: 6781-6789
  • DOI: 10.5194/bg-12-6781-2015
  • Peer Reviewed / Open Access
• [Journal Article] Varying responses to Indian monsoons during the past 220 kyr recorded in deep-sea sediments in inner and outer regions of the Gulf of Aden (2015)
  • Author(s): Isaji, Y., Kawahata, H., Ohkouchi, N., Ogawa, N. O., Murayama, M., Inoue, K., and Tamaki, K.
  • Journal Title: Journal of Geophysical Research-Ocean Volume: 120 Issue: 11 Pages: 7253-7270
  • DOI: 10.1002/2015jc010982
  • Peer Reviewed / Open Access
• [Journal Article] Terrestrial environmental changes around the Gulf of Aden over the last 210 kyr deduced from the sediment n-alkane record: Implications for the dispersal of Homo sapiens. (2015)
  • Author(s): Isaji, Y., Kawahata, H., Ohkouchi, N., Murayama, M., and Tamaki, K.
  • Journal Title: Geophysical Research Letters Volume: 42 Issue: 6 Pages: 1880-1887
  • DOI: 10.1002/2015gl063196
  • Peer Reviewed / Open Access
• [Journal Article] Sources of dissolved inorganic carbon in two small streams with different bedrock geology: insights from carbon isotopes (2015)
  • Author(s): Ishikawa NF, Tayasu I, Yamane M, Yokoyama Y, Sakai S, Ohkouchi N
  • Journal Title: Radiocarbon Volume: 57 Issue: 3 Pages: 439-448
  • DOI: 10.2458/azu_rc.57.18348
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Organic nitrogen: Sources, fates, and chemistry (2014)
  • Author(s): Ohkouchi N and Takano Y
  • Journal Title: Treatise on Geocheimstry 2nd edition Volume: 12 Pages: 251-289
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] High-resolution food webs based on nitrogen isotopic composition of amino acids (2014)
  • Author(s): Chikaraishi Y, Steffan SA, Ogawa NO, Ishikawa NF, Sasaki Y, Tsuchiya M, Ohkouchi N
  • Journal Title: Ecology and Evolution Volume: 4 Issue: 12 Pages: 2423-2449
  • DOI: 10.1002/ece3.1103
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Influences of nitrogen substrates and substrate C:N ratios on the nitrogen isotopic composition of amino acids from the marine bacterium Vibrio harveyi (2014)
  • Author(s): Maki K, Ohkouchi N, Chikaraishi Y, Fukuda H, Miyajima T, Nagata T
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 140 Pages: 521-530
  • Peer Reviewed
• [Journal Article] Compound-specific 14C dating of IODP Expedition 318 core U1357A obtained off the Wilkes Land coast, Antarctica (2014)
  • Author(s): Yamane M, Yokoyama Y, Miyairi Y, Suga H, Matsuzaki H, Dunbar R, Ohkouchi N
  • Journal Title: Radiocarbon Volume: 56 Pages: 1009-1017
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Refinement of reconstructed ancient food webs based on the nitrogen isotopic compositions of amino acids from bone collagen: A case study of archaeological herbivores from Tell Ain el-Kerkh, Syria (2014)
  • Author(s): Yu ITAHASHI, Yoshito CHIKARAISHI, Naohiko OHKOUCHI, Minoru YONEDA
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 48 Issue: 4 Pages: e15-e19
  • DOI: 10.2343/geochemj.2.0318
  • NAID: 130004857873
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Organic nitrogen: Sources, fates, and chemistry (2014)
  • Author(s): Ohkouchi N, Takano Y
  • Journal Title: Treatise on Geochemistry vol. 2 Volume: 2 Pages: 251-289
  • Peer Reviewed
• [Presentation] Widening the application of compound-specific isotope analysis to less volatile molecules (2016)
  • Author(s): Ohkouchi, N.
  • Organizer: Goldschmidt Conference
  • Place of Presentation: Pacifico Yokohama, Yokohama, Kanagawa
  • Year and Date: 2016-06-29
  • Int'l Joint Research / Invited
• [Presentation] Compound-specific radiocarbon analysis (CSRA) as a chronological tool for Antarctic margin sediments : An update (2015)
  • Author(s): Ohkouchi, Y Yokoyama, M Yamane, H Suga, T Nagata, TI Eglinton
  • Organizer: NIPR Symposium
  • Place of Presentation: National Institute of Polar Research, Tachikawa, Tokyo
  • Year and Date: 2015-11-17
  • Int'l Joint Research
• [Presentation] Organic Molecules as tools for Quaternary paleoclimatology (2015)
  • Author(s): Ohkouchi, N.
  • Organizer: XIX INQUA Congress
  • Place of Presentation: The Nagoya Congress Center, Nagoya, Aichi
  • Year and Date: 2015-07-27
  • Int'l Joint Research / Invited
• [Presentation] 有機物から最大限の情報を引き出すために (2014)
  • Author(s): 大河内直彦，力石嘉人，高野淑識，小川奈々子
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2014-05-02
  • Invited
• [Presentation] 「軽い」アミノ酸と地球化学の接点 (2014)
  • Author(s): 高野淑識・力石嘉人・大河内直彦
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2014-05-02
• [Presentation] アミノ酸の安定同位体比を正確かつ感度良く測定するための分析法 (2014)
  • Author(s): 力石嘉人，高野淑識，大河内直彦
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2014-05-02
• [Book] 地球の履歴書 (2015)
  • Author(s): 大河内直彦
  • Total Pages: 218
  • Publisher: 新潮選書
• [Remarks] 大河内直彦 業績