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研究業績

 　論文（査読有）
  1. Zheng, J., Guo, X., Yang, H., Du, K., Mao, X., Jiang, W., Sagawa, T., Miyazawa, Y., Varlamov, MS., Abe-Ouchi, A., and Chan, W-L. (2023) Low sea surface salinity event of the Japan Sea during the Last Glacial Maximum, Paleoceanography and Paleoclimatology, doi:10.1029/2022PA004486. [Link]
  2. Tamura, A., Sagawa, T., Okino, K., and Morishita, T. (2022) Determination of whole-rock trace-element compositions of siliceous rocks using MgO-diluted fused glass and LA-ICP-MS, Geochemical Journal, doi:10.2343/geochemj.GJ22020. [Link]
  3. Sagawa, T., Okamura, K., and Murayama, M. (2022) Orbital-scale thermocline temperature variability in the western equatorial Pacific during the last 370 kyr, Palaeogeography, Palaeoclimatology, Palaeoecology, doi:10.1016/j.palaeo.2022.111285. [Link]
  4. Zhou, X., Hess, A., Bu, K., Sagawa, T., and Rosenthal, Y. (2022) Simultaneous determination of I/Ca and other elemental ratios in foraminifera: comparing results from acidic and basic solutions, Geochemistry, Geophysics, Geosystems, doi:10.1029/2022GC010660. [Link]
  5. 長橋 良隆, 深谷 桃子, 池原 研, 佐川 拓也 (2022) 若狭湾沖海底堆積物コアに挟まる後期更新世から完新世テフラの層序と広域テフラとの対比, 第四紀研究. doi:10.4116/jaqua.61.2111. [Link]
  6. Li, J., Yamazaki, T., Usui, Y., Sagawa, T., Kubota, Y., and Kuroda, J. (2022) Understanding the Role of Biogenic Magnetite in Geomagnetic Paleointensity Recording: Insights from Ontong Java Plateau Sediments, Journal of Geophysical Research: Solid Earth, 127, e2022JB024387. doi:10.1029/2022JB024387. [Link]
  7. Sagawa, T., Tamura, A., Okino, K., and Morishita, T. (2022) Validation of Trace Element Analysis of Geological Materials by Single-Pulse Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS), Analytical Letters, doi:10.1080/00032719.2022.2077356. [Link]
  8. Kuwae, M., Tsugeki, N., Finney, BP., Tani, Y., Onodera, J., Kiyoto M., Kusaka M., Sagawa, T., Nakamuwa, Y., Ohnishi, H., Kuroda, H., Okuda, N., Ohta, T., Ikehara, M., and Irino, T. (2022) Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics, . Quaternary Research, 1-16. doi:10.1017/qua.2021.71. [Link]
  9. Felder, S., Sagawa, T., Greaves, M., Leng, MJ., Ikehara, K., Kimoto, K., Hasegawa, S., Wagner, T., and Henderson, ACG. (2022) Palaeoceanography of the Japan Sea Across the Mid-Pleistocene Transition: Insights From IODP Exp. 346, Site U1427, Paleoceanography and Paleoclimatology, doi:10.1029/2021PA004236. [Link]
  10. Horikawa, K., Kozaka, Y., Okazaki, Y., Sagawa, T., Onodera, J., Asahi, H., Shin, K-C., Asahara, Y., and Takahashi, K. (2021) Neodymium isotope records from the Northwestern Pacific: Implication for deepwater ventilation at Heinrich Stadial 1, Paleoceanography and Paleoclimatology, 36, e2021PA004312. doi:10.1029/2021PA004312. [Link]
  11. Hayashi, R., Sagawa, T., Irino, T., and Tada, R. (2021) Orbital-scale vegetation-ocean-atmosphere linkages in western Japan during the last 550 ka based on a pollen record from the IODP site U1427 in the Japan Sea, Quaternary Science Reviews, 267, doi:10.1016/j.quascirev.2021.107103. [Link]
  12. Kubota, K., Ishikawa, T., Nagaishi, K., Kawa, T., Sagawa, T., Ikehara, M., Yokoyama, Y., and Yamazaki, T. (2021) Comprehensive analysis of laboratory boron contamination for boron isotope analyses of small carbonate samples, Chemical Geology, 576, doi:10.1016/j.chemgeo.2021.120280. [Link]
  13. Kubota, K., Yokoyama, Y., Ishikawa, T., Sagawa, T., Ikehara, M., and Yamazaki, T. (2019) Equatorial Pacific seawater pCO2 variability since the last glacial period, Scientific Reports, 9, doi:10.1038/s41598-019-49739-0. [Link]
  14. Saavedra-Pellitero, M., Baumann, K-H., Gallagher, SJ., Sagawa, T., and Tada, R. (2019) Paleoceanographic evolution of the Japan Sea over the last 460 kyr - A coccolithophore perspective, Marine Micropaleontology, doi:10.1016/j.marmicro.2019.01.001. [Link]
  15. Huang, H-H., Yasuhara, M., Iwatani, H., Alvarez-Zarikian, C., Bassetti, M-A., and Sagawa, T. (2018) Benthic biotic response to climate changes over the last 700,000 years in a deep marginal sea: impacts of deoxygenation and the Mid‐Brunhes Event, Paleoceanography and Paleoclimatology, doi:10.1029/2018PA003343. [Link]
  16. Gallagher, SJ., Sagawa, T., Henderson, A., Saavedra-Pellitero, M., de Vleeschouwer, D., Black, H., Itaki, T., Toucanne, S., Bassetti, M-A., Clemens, S., Anderson, W., Alvarez-Zarikian, C., and Tada, R. (2018) East Asian monsoon history and paleoceanography of the Japan Sea over the last 460,000 years, Paleoceanography and Paleoclimatology, doi:10.1029/2018PA003331. [Link]
  17. Itaki, T., Sagawa, T., and Kubota, Y. (2018) Pleistocene radiolarian biostratigraphy, IODP Expedition 346 Site U1427, Proceedings of the Intergrated Ocean Drilling Program, 346: doi:10.2204/iodp.proc.346.202.2018. [Link]
  18. Irino, T., Tada, R., Ikehara, K., Sagawa, T., Karasuda, A., Kurokawa, S., Seki, A., and Lu, S. (2018) Construction of perfectly continuous records of physical properties for dark-light sediment sequences collected from the Japan Sea during Integrated Ocean Drilling Program Expedition 346 and their potential utilities as paleoceanographic studies, Progress in Earth and Planetary Science, 5: 23. [Link]
  19. Tada, R., et al. (2018) High-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346, Progress in Earth and Planetary Science, 5: 19. [Link]
  20. Sagawa, T., Nagahashi, Y., Satoguchi, Y., Holbourn, A., Itaki, T., Gallagher, SJ., Saavedra-Pellitero, M., Ikehara, K., Irino, T., Tada, R.. (2018) Integrated tephrostratigraphy and stable isotope stratigraphy in the Japan Sea and East China Sea using IODP Sites U1426, U1427, and U1429, Expedition 346 Asian Monsoon, Progress in Earth and Planetary Science, 5: 18. [Link]
  21. Pearson, O., and IODP Expedition 363 Shipboard Scientific Party. (2018) A deep-sea agglutinated foraminifer tube constructed with planktonic foraminifer shells of a single, Journal of Micropaleontology, 37: 97-104. [Link]
  22. Kuwae, M., Yamamoto, M., Sagawa, T., Ikehara, K., Irino, T., Takemura, K., Takeoka, H., and Sugimoto, T. (2017) Multidecadal, centennial, and millennial variability in sardine and anchovy abundances in the western North Pacific and climate-fish linkages during the late Holocene, Progress in Oceanography, 159: 86-98. [Link]
  23. Ujiie, Y., Asahi, H., Sagawa, T., and Bassinot, F. (2016) Evolution of the North Pacific Subtropical Gyre during the past 190 kyr through the interaction of the Kuroshio Current with the surface and intermediate waters, Paleoceanography, 31: 1498-1513. [Link]
  24. Sagawa, T., Kuwae, M., Tsuruoka, K., Nakamura, Y., Ikehara, M., and Murayama, M. (2014) Solar forcing of centennial-scale East Asian winter monsoon variability in the mid- to late Holocene, Earth and Planetary Science Letters, 395: 124-135. [Link]
  25. Sagawa, T., Kuroyanagi, A., Irino, T., Kuwae, M., and Kawahata, H. (2013) Seasonal variations in planktonic foraminiferal flux and oxygen isotopic composition in the western North Pacific: implications for paleoceanographic reconstruction, Marine Micropaleontology, 100: 11-20. [Link]
  26. Kuwae, M., Yamamoto, M., Ikehara, K., Irino, T., Takemura, K., Sagawa, T., Sakamoto, T., Ikehara, M., and Takeoka, H. (2013) Stratigraphy and wiggle-matching-based age-depth model of late Holocene marine sediments in Beppu Bay, southwest Japan, Journal of Asian Earth Sciences, 69: 133-148. [Link]
  27. Sagawa, T., Yokoyama, Y., Ikehara, M., and Kuwae, M. (2012) Shoaling of the western equatorial Pacific thermocline during the last glacial maximum inferred from multispecies temperature reconstruction of planktonic foraminifera, Palaeogeography, Palaeoclimatology, Palaeoecology, 346-347: 120-129.[Link]
  28. Okazaki, Y., Sagawa, T., Asahi, H., Horikawa, K., and Onodera, J. (2012) Ventilation changes in the western North Pacific since the last glacial period. Climate of the Past, 8: 17-24. [Link]
  29. Horikawa, K., Martin, EE., Asahara, Y., and Sagawa, T. (2011) Limits on conservative behaviour of Nd isotopes in seawater assessed from analysis of fish teeth from Pacific core tops, Earth and Planetary Science Letters, 310:119-130. [Link]
  30. Sagawa, T., Yokoyama, Y., Ikehara, M., and Kuwae, M. (2011) Vertical thermal structure history in the western subtropical North Pacific since the last glacial maximum, Geophysical Research Letters, 38, L00F02, doi:10.1029/2010GL045827. [
  31. 佐川 拓也 (2010) 浮遊性有孔虫殻Mg/Ca古水温計の現状・課題とその応用例, 地質学雑誌, 116(2): 63-84. [PDF Download@J-Stage]
  32. Horikawa, K., Murayama, M., Minagawa, M., Kato, Y., and Sagawa, T. (2010) Latitudinal and downcore (0-750 ka) changes in n-alkane chain lengths in the eastern equatorial Pacific, Quaternary Research, 73: 573-582. [Link]
  33. Sagawa, T. and Ikehara, K. (2008) Intermediate water ventilation change in the subarctic Northwest Pacific during the last deglaciation, Geophysical Research Letters, 35, L24702, doi:10.1029/2008GL035133. [Link]
  34. Greaves et al. (2008) Interlaboratory comparison study of calibration standards for foraminiferal Mg/Ca thermometry, Geochemistry Geophysics Geosystems (G-cubed), 9(8): doi:10.1029/2008GC001974. [Link]
  35. Sagawa, T., Toyoda, K., and Oba, T. (2006) Sea surface temperature record off central Japan since the Last Glacial Maximum using planktonic foraminiferal Mg/Ca thermometry, Journal of Quaternary Science, 21(1): 63-73. [Link]

　報告書・記事

  • Suganuma, Y., Head, MJ., and Sagawa, T. (2022) Preface for the article collection “Stratigraphy and paleoclimatic/paleoenvironmental evolution across the Early?Middle Pleistocene transition in the Chiba composite section, Japan, and other reference sections in East Asia”, Progress in Earth and Planetary Science, 9, 9. doi:10.1186/s40645-022-00468-5. [Link]
  • Rosenthal, Y., Holbourn, A., Kulhanek, DK., and Expedition 363 Scientists，2018，Proceedings of the International Ocean Discovery Program, Volume 363 Western Pacific Warm Pool [Link]．
  • Rosenthal, Y., Holbourn, A., Kulhanek, DK., and Expedition 363 Scientists，2017，International Ocean Discovery Program Expedition 363 Preliminary Report, Western Pacific Warm Pool ~Neogene and Quaternary records of Western Pacific Warm Pool paleoceanography~，IODP Preliminary Report [Link]．
  • 佐川拓也・久保田好美・多田隆治・池原研・入野智久・板木拓也・杉崎彩子・烏田明典・Richard W. Murray・Carlos A. Alvarez-Zarikian・Exp. 346 Scientists，2015，アジアモンスーンの発達・変動史の解明〜日本海と東シナ海に残された記録〜，J-DESCニュースレター [Link(PDF)]．
  • Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and the Expedition 346 Scientists，2014，Asian Monsoon，Proceedings of the Intergrated Ocean Drilling Program Volume 346．[Link]
  • Expedition 346 Scientists，2014，Asian Monsoon -Onset and evolution of millennial-scale variability of Asian monsoon and its possible relationwith Himalaya and Tibetan Plateau uplift-，Integrated Ocean Drilling Program Expedition 346 Preliminary Report．[Link]
  • 入野智久・佐川拓也・池原研・大場忠道・川幡穂高，2004，鹿島沖で採取された3本の堆積物柱状試料におけるコアトップ部分の重量の違い，JAMSTEC深海研究24号:79-83．
  • 佐川拓也・入野智久・新村靖・川幡穂高・金松敏也，2003，KR02-15次航海で得られた日本列島東岸沖の海底コア(PC-1, 4, 5, 6)の岩相，JAMSTEC深海研究23号:141-153．
  • 佐川拓也・入野智久・市川豊・上嶋敏功・池原研・木元克典・氏家由利香・川幡穂高，2003，KR02-06次航海St. A（鹿島沖）で得られた堆積物グラビティーコアの岩相及び，IMAGES-WEPAMA MD01-2421ピストンコアとの対比，JAMSTEC深海研究23号:135-140．
  • 入野智久・佐川拓也・新村靖・金松敏也・山崎俊嗣・三島稔明，2003，「かいれい」KR02-15次航海で得られた北西太平洋遠洋堆積物コア(PC-2, 3, 7)の岩相，JAMSTEC深海研究23号:121-133．

　招待講演

  • Sagawa, T., Nagahashi, Y., Satoguchi, Y., Itaki, T., Holbourn, A., Ikehara, K., Irino, T., Tada, R., 2017, Japan Sea oxygen isotope stratigraphy and monsoon signals recorded in sedimentary color variation of IODP Site U1427, JpGU 2017 annual meeting (Chiba, 2015.5.20-25)．
  • Sagawa, T., Ikehara, K., Itaki, T., Sugisaki, S., Nagahashi, Y., Satoguchi, Y., Xuan, C., Tada, R., Murray, RW., Alvarez-Zarikian, CA., and Expedition 346 Scientists, 2015, Chronostratigraphy of IODP Expedition 346 Site U1427 and influence of the glacio-eustatic sea-level change on marginal sea environments, INQUA XIX Congress 2015 (Nagoya, 2015.7.27-8.2)．
  • 佐川拓也，多田隆治，池原研，入野智久，板木拓也，杉崎彩子，久保田好美，烏田明典，Chuang Xuan，長橋良隆，里口保文，中川毅，Richard W. Murray，Carlos A. Alvarez-Zarikian，Exp. 346 Scientists，統合国際深海掘削計画（IODP）346次航海で採取された縁海海底堆積物の高精度年代決定，地球惑星科学連合2015年大会，2015年5月，千葉市．
  • 佐川拓也，有孔虫複数種のMg/Ca古水温から探る北西太平洋〜縁海の古環境，日本第四紀学会2014年大会，2014年9月，柏市．
  • 佐川拓也，多田隆治，Murray R., Alvarez-Zarikian C., and Expedition 346 Scientists，IODP346次航海で日本海から得られた堆積物と有孔虫同位体の予察的結果，地球惑星科学連合2014年大会，2014年4月，横浜市．
  • 佐川拓也，日本海表層および中層の海洋環境発達史 IODP Exp.346 Asian Monsoonに向けて，地球惑星科学連合2013年大会，2013年5月，千葉市．
  • 佐川拓也，鶴岡賢太朗，加三千宣，武岡英隆，村山雅史，北西太平洋亜寒帯域の完新世表層水変動，地球惑星科学連合2011年大会，2011年5月，千葉市．
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Contact: tsagawa(at)staff.kanazawa-u.ac.jp