Calculated reservoir ages using paired AMS ^<14>C and MC-ICP-MS U-Th dating of foraminifera test, implications for paleoceanography

2007 Fiscal Year Final Research Report Summary

• Project/Area Number: 17540443
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Stratigraphy/Paleontology
• Research Institution: Kochi University
• Principal Investigator: MURAYAMA Masafumi Kochi University, Center for Advanced Marine Core Research, Associate Professor (50261350)
• Co-Investigator(Kenkyū-buntansha): NAKAMURA Toshio Nagoya University, Center for Chronological Research, Professor (10135387)
• Project Period (FY): 2005 – 2007
• Keywords: Geochronology / Accelerator Mass Spectrometory / Radiocarbon / U-Th age / Reservoir effect / MC-ICP-MS

Research Abstract

AMS14C age of planktonic foraminifera from core samples must be corrected for differences between the 14C age of surface water and the contemporaneous atmosphere prior to calculation of a calendar age. This is because the waters of the deep ocean are out of equilibrium with respect to the atmosphere causing marine carbon-containing material to appear older than material formed in equilibrium with the atmosphere. Reservoir ages have been calculated using paired AMS 14C and MC-ICP-MS U-Th dating of small amounts of foraminifera tests from the eastern equatorial Pacific. The results show a marked reduction in reservoir age during 50 kyrs.

Research Products

• [Journal Article] Standing stock of deep-sea metazoan meiofauna in the Sulu Sea and adjacent areas (2007)
  • Author(s): Shimanaga, M., Nomaki, H., Suetsugu, K., Murayama, M. and Kitazato, H.
  • Journal Title: Deep Sea Research II 54 Pages: 131-144
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Truncated flame structure within deposit of the Indian Ocean Tsunami:evidence of syn-sedimentary deformation (2007)
  • Author(s): Matsumoto, D., Naruse, H., Fujino, S., Suphawajruksakul, A., Jarupongsakul, T., Sakakura, N. and Murayama, M.
  • Journal Title: Marine Geology 54 Pages: 131-144
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Standing stock of deep-sea metazoan meiofauna in the Sulu Sea and adjacent areas (2007)
  • Author(s): Shimanaga, M., Nomaki, H., Suetsugu, K., Murayama., M., Kitazato, H
  • Journal Title: Deep Sea Research II 54 Pages: 131-144
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Truncated Flame structure within deposit of the Indian Ocean Tsunami evidence of syn-sedimentary deformation (2007)
  • Author(s): Matsumoto, D., Naruse, H., Fujino, S., Suphawajruksakul, A., Jarupongsakul, T., Sakakura, N., Murayama., M
  • Journal Title: Marine Geology 54 Pages: 131-144
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 四国沖から採取された2本のIMAGESコアを用いた第四紀後期におけるテフラ層序 (2006)
  • Author(s): 池原 実, 村山 雅史, 多田 井修, 外西 奈津美, 大道 修宏, 川幡 穂高, 安田 尚登
  • Journal Title: 化石 79 Pages: 60-76
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Long term Aleutian Low dynamics and obliquity-controlled oceanic primary production in the mid-latitude western North Pacific(Core MD01-2421)during the last 145,000 years (2006)
  • Author(s): Ueshima, T., Yamamoto, M., Irino, T., Oba, T., Minagawa, M., Narita, H. and Murayama, M.
  • Journal Title: Global Planet. Change 53(1-2) Pages: 21-28
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Paleoceanographic change off central Japan since the last 144,000 years based on high-resolution oxygen and carbon isotope records (2006)
  • Author(s): Oba, T., Irino, T., Yamamoto, M. Murayama, M., Takamura, A. and Aoki, K.
  • Journal Title: Global Planet. Change 53 Pages: 5-20
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Nagao,N2 fixation variability in the oligotrophic Sulu Sea,western equatorial Pacific region over the past 83 kyr (2006)
  • Author(s): K. Horikawa, M. Minagawa, Y. Kato, M. Murayama, and S. Nagao
  • Journal Title: Journal of Oceanography 62(4) Pages: 427-439
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Spatial and temporal sea-surface temperatures in the eastern equatorial Pacific over the past 150 kyr (2006)
  • Author(s): Horikawa, K., Minagawa, M., Murayama, M., Kato, Y, and Asahi, H.
  • Journal Title: Geophysical Research Letters 33 Pages: 2006GL025948
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Long term Aleutian Low dynamics and obliquity-controlled oceanic primary production in the mid-latitude western North Pacific(Core MD01-2421) during the last 145,000 years (2006)
  • Author(s): Ueshima, T., Yamamoto, M., Irino, T., Oba, T., Minagawa, M., Narita, H., Murayama., M
  • Journal Title: Global Planet. Change 53(1-2) Pages: 21-28
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Paleoceanographic change off central Japan since the last 144,000 years based on high-resolution oxygen and carbon isotope records (2006)
  • Author(s): Oba, T., Irino, T., Yamamoto, M., Murayama. M., Takamura, A., Aoki, K
  • Journal Title: Global Planet. Change 53(1-2) Pages: 5-20
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] N2 fixation variability in the oligotrophic Sulu Sea, western equatorial Pacific region over the past 83 kyr (2006)
  • Author(s): K. Horikawa, M. Minagawa, Y. Kato, M. Murayama, S. Nagao
  • Journal Title: Journal of Oceanography 62(4) Pages: 427-439
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Spatial and temporal sea-surface temperatures in the eastern equatorial Pacific over the past 150 kyr (2006)
  • Author(s): Horikawa, K., Minagawa, M., Murayama. M., Kato, Y, Asahi, H
  • Journal Title: Geophysical Research Letters 33 Pages: 2006GL025948
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Fidelity of d180 as a proxy for sea surface temperature:Influence of variable coral growth rates on the coral Porites lutea from Hainan Island,China (2005)
  • Author(s): Shimamura, M., Oba, T., Xu, G., Lu, B., Wang, L., Murayama, M., Toyoda, K. and A. Winter
  • Journal Title: Geochem. Geophys. Geosyst. 6 Pages: GC000966
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] 高知県仁淀村に分布する鳥巣石灰岩のストロンチウム同位体年代 (2005)
  • Author(s): 白石 史人, 早坂 康隆, 高橋 嘉夫, 谷水 雅治, 石川 剛志, 松岡 淳, 村山 雅史, 狩野 彰宏
  • Journal Title: 地質学雑誌 111 Pages: 610-623
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Fidelity of d180 as a proxy for sea surface temperature : Influence of variable coral growth rates on the coral Porites lutea from Hainan Island, China (2005)
  • Author(s): Shimamura, M., Oba, T., Xu, G., Lu, B., Wang, L., Murayama., M., Toyoda, K., A., Winter
  • Journal Title: Geochem. Geophys. Geosyst 6 Pages: GC000966
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] AMS 14C dating and paleoceanographic history in the Southern Ocean during the late Quarternary (2007)
  • Author(s): Murayama, M., Ikehara, M. and Nakamura. T.
  • Organizer: The 2nd East-Asia AMS Conference
  • Place of Presentation: Seoul, Korea
  • Year and Date: 20071022-23
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] AMS ^<14>C dating and paleoceanographic history in the Southern Ocean during the late Quarternary (2007)
  • Author(s): Murayama, M., Ikehara, M., Nakamura., T
  • Organizer: The 2nd East-Asia AMS Conference
  • Place of Presentation: Seoul, Korea
  • Year and Date: 20071022-23
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Atmospheric Concentrations of ^7Be, ^<10>Be and ^<210>Pb in Northeast Asia (2007)
  • Author(s): Yamagata, T., Tada, W., Saito, T., Murayama. M., Momoshima, N., Matsuzaki, H., Nagai, H
  • Organizer: International Conference, Asia-Pacific Sposium on Radiochemistry (APSORC2005)
  • Place of Presentation: Beijing, China
  • Year and Date: 20071017-21
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] New multi-proxy records of TOC, Opal, CaCO_3, and Uvigerina spp. δ 13C in the Eastern Equatorial Pacific over the past 750 Kyr. (2007)
  • Author(s): Kato, Y., Horikawa, K., Murayama, M., Minagawa, M. and Sagawa, T.
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Chronostratigraphy and paleoceanography change of Quaternary sediments from southwestern part of Pacific-Antarctic ridge, the Ross Sea, Antarctica (2007)
  • Author(s): Murayama, M., Yagi, Y., Mishima, T., Horikawa, K., Sagawa, T., Kodama, K., Kato, Y. and Minagawa, M.
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Paleo-temperature and salinity history over the last 340 kyr in mid-latitude (43°S) of the southwestern Pacific, eastern Chatham Rise (2007)
  • Author(s): Sagawa, T., Nuita, M., Horikawa, K., Murayama, M., Kato, Y. and Minagawa, M.
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Oceanic frontal system oscillations in the Australian sector of the southern ocean during the late Quaternary (2007)
  • Author(s): Ikehara, M., Hatakeyama, E., Nishigawa, M. and Muravama, M.
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] The changes of calcite and opal in the sediment cores from the HNLC areas: Eastern Equatorial Pacific, Antarctic Ocean and Southern subpolor front area (2007)
  • Author(s): Konishi, Y., Kato, Y., Horikawa, K., Murayama, M. and Minagawa, M.
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] New multi-proxy records of TOC, Opal, CaCO_3, and Uvigerina spp. δ^<13>C in the Eastern Equatorial Pacific over the past 750 Kyr (2007)
  • Author(s): Kato, Y., Horikawa, K., Murayama.M., Minagawa, M., Sagawa, T
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Paleo-temperature and salinity history over the last 340 kyr in mid-latitude (43° S) of the southwestern Pacific, eastern Chatham Rise (2007)
  • Author(s): Sagawa, T., Nuita, M., Horikawa, K., Murayama. M., Kato, Y., Minagawa, M
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] The changes of calcite and opal in the sediment cores from the HNLC areas : Eastern Equatorial Pacific, Antarctic Ocean and Southern subpolor front area (2007)
  • Author(s): Konishi, Y., Kato, Y., Horikawa, K., Murayama, M., Minagawa, M
  • Organizer: 9th International Conference Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 20070903-07
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Geochronology and paleoceanographic history of Quaternary sediments from southwestern part of Pacific-Antarctic Ridge, the Ross Sea, Antarctica. (2006)
  • Author(s): Murayama, M., Yagi, Y., Mishima, T., Horikawa, K., Sagawa, T., Kodama, K., Kato, Y., and Minagawa
  • Organizer: AGU fall meeting
  • Place of Presentation: San Francisco, U.S.A.
  • Year and Date: 20061209-14
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Holocene 1,500-Year Variation of Sea Surface Temperature in the Northwestern Pacific. (2006)
  • Author(s): Isono, D., Yamamoto, M., Irino, T., Murayama, M., Nakamura, T., Kawahata, H.
  • Organizer: AGU fall meeting
  • Place of Presentation: California, U.S.A.
  • Year and Date: 20061209-14
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Geochronology and paleoceanographic history of Quaternary sediments from southwestern part of Pacific-Antarctic Ridge, the Ross Sea, Antarctica (2006)
  • Author(s): Murayama. M., Yagi, Y., Mishima, T., Horikawa, K., Sagawa, T., Kodama, K., Kato, Y., Minagawa, M
  • Organizer: AGU fall meeting
  • Place of Presentation: Antarctica. California, U.S.A
  • Year and Date: 20061209-14
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Holocene 1,500-Year Variation of Sea Surface Temperature in the Northwestern Pacific (2006)
  • Author(s): Isono, D., Yamamoto, M., Irino, T., Murayama. M., Nakamura, T., Kawahata, H
  • Organizer: AGU fall meeting
  • Place of Presentation: California, U.S.A
  • Year and Date: 20061209-14
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Alkenone-SST and nitrogen isotope records in the three piston cores in the eastern Equatorial Pacific during the past 150 ky. (2005)
  • Author(s): Horikawa, K., Murayama, M., Asahi, H., Kato, Y., and Minagawa, M
  • Organizer: AGU fall meeting
  • Place of Presentation: San Francisco, U.S.A.
  • Year and Date: 20051204-09
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Alkenone-SST and nitrogen isotope records in the three pistoncores in the eastern Equatorial Pacific during the past 150 ky (2005)
  • Author(s): Horikawa, K., Murayama., M., Asahi, H., Kato, Y., Minagawa, M
  • Organizer: AGU fall meeting
  • Place of Presentation: San Francisco, U.S.A
  • Year and Date: 20051204-09
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Atmospheric Concentrations of 7Be, 10Be and 210Pb in Northeast Asia. (2005)
  • Author(s): Yamagata, T., Tada, W., Saito, T., Murayama, M., Momoshima, N., Matsuzaki, H., Nagai, H.
  • Organizer: International Conference, Asia-Pacific Symposium on Radiochemistry (APSORC2005)
  • Place of Presentation: Beijing, China
  • Year and Date: 20051017-21
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Core correlations of three sites straddling the equator in the eastern Pacific (2005)
  • Author(s): Murayama, M., Horikawa, K., Asahi, H., Matsuoka, J., Kato, Y., Minagawa, M.
  • Organizer: 10 th International Conference on Accelerator Mass Spectrometry
  • Place of Presentation: California, U.S.A.
  • Year and Date: 20050904-11
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Core correlations of three sites straddling the equator in the eastern Pacific (2005)
  • Author(s): Murayama., M., Horikawa, K., Asahi, H., Matsuoka, J., Kato, Y., Minagawa, M
  • Organizer: 10th International Conference on Accelerator Mass Spectrometry
  • Place of Presentation: California, U.S.A.
  • Year and Date: 20050904-11
  • Description: 「研究成果報告書概要(欧文)」より