Horizontal and vertical transports of nutrients between the Kuroshio main stream and its inshore side

• Project/Area Number: 26287116
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Ehime University
• Principal Investigator: Guo Xinyu 愛媛大学, 沿岸環境科学研究センター, 教授 (10322273)
• Co-Investigator(Kenkyū-buntansha): 小松 幸生 東京大学, 大学院新領域創成科学研究科, 准教授 (30371834) ; 笹井 義一 国立研究開発法人海洋研究開発機構, 地球環境観測研究開発センター, グループリーダー代理 (40419130) ; 宮澤 泰正 国立研究開発法人海洋研究開発機構, アプリケーションラボ, グループリーダー (90399577)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000); Fiscal Year 2016: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
• Keywords: 栄養塩輸送 / 黒潮 / 黒潮続流 / 湧昇流 / 再循環 / 中規模渦 / 東シナ海 / 海洋物理 / 環境変動 / 日本南岸黒潮 / 黒潮・親潮移行域 / ルソン海峡 / 栄養塩濃度 / 長期変化 / Nutrient Stream

Outline of Final Research Achievements

Using results of a low-trophic biogeochemical model, we calculated annually averaged horizontal nutrients transport between the Kuroshio main stream and its two lateral sides and annually averaged vertical nutrients transport through the bottom of eutrophic layer within the Kuroshio main stream. Our calculation shows 1) a large horizontal nutrients transport from inshore area south of Japan to the Kuroshio main stream; 2) a horizontal nutrients transport from mixed area to the Kuroshio Extension and a further southward nutrients transport from the Kuroshio Extension to subtropical area; 3) a large vertical nutrients transport around the Luzon Strait and Kuroshio Extension.

Research Products

• [Int'l Joint Research] Ocean University of China/Tianjin Univ. of Science and Technology/East China Normal University(China)
• [Int'l Joint Research] Second Institute of Oceanography, SOA(China)
• [Int'l Joint Research] Ocean University of China/Tianjin Univ. of Science and Technology(中国)
• [Journal Article] Phytoplankton growth response to Asian dust addition in the northwest Pacific Ocean versus the Yellow Sea (2018)
  • Author(s): Zhang Chao、Gao Huiwang、Yao Xiaohong、Shi Zongbo、Shi Jinhui、Yu Yang、Meng Ling、Guo Xinyu
  • Journal Title: Biogeosciences Volume: 15 Issue: 3 Pages: 749-765
  • DOI: 10.5194/bg-15-749-2018
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Potential impact of ocean circulation on the declining Japanese eel catches (2018)
  • Author(s): Chang Yu-Lin K.、Miyazawa Yasumasa、Miller Michael J.、Tsukamoto Katsumi
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 5496-5496
  • DOI: 10.1038/s41598-018-23820-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Physical and biological roles of mesoscale eddies in Japanese eel larvae dispersal in the western North Pacific Ocean (2018)
  • Author(s): Chang Yu-Lin K.、Miyazawa Yasumasa、Beguer-Pon Melanie、Han Yu-San、Ohashi Kyoko、Sheng Jinyu
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 5013-5013
  • DOI: 10.1038/s41598-018-23392-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Interannual variation of nutrients along a transect across the Kuroshio and shelf area in the East China Sea over 40 years (2017)
  • Author(s): Hu, Y., Guo, X., and Zhao, L
  • Journal Title: Chinese Journal of Oceanology and Limnology Volume: 印刷中 Issue: 1 Pages: 62-76
  • DOI: 10.1007/s00343-017-6234-y
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Simulating the responses of a low-trophic ecosystem in the East China Sea to decadal changes in nutrient load from the Changjiang (2017)
  • Author(s): Wang, Y., Guo, X., and Zhao, L.
  • Journal Title: Chinese Journal of Oceanology and Limnology Volume: 印刷中 Issue: 1 Pages: 48-61
  • DOI: 10.1007/s00343-017-6233-z
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Water exchange across isobaths over the continental shelf of the East China Sea (2017)
  • Author(s): Zhang, J., Guo, X., Zhao, L., Miyazawa, Y., Sun, Q
  • Journal Title: Journal of Physical Oceanography Volume: 印刷中 Issue: 5 Pages: 1043-1060
  • DOI: 10.1175/jpo-d-16-0231.1
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Assimilation of high-resolution sea surface temperature data into an operational nowcast/forecast system around Japan using a multi-scale three-dimensional variational scheme (2017)
  • Author(s): Miyazawa Yasumasa、Varlamov Sergey M.、Miyama Toru、Guo Xinyu、Hihara Tsutomu、Kiyomatsu Keiji、Kachi Misako、Kurihara Yukio、Murakami Hiroshi
  • Journal Title: Ocean Dynamics Volume: 67 Issue: 6 Pages: 713-728
  • DOI: 10.1007/s10236-017-1056-1
  • Peer Reviewed
• [Journal Article] The formation processes of phytoplankton growth and decline in mesoscale eddies in the western North Pacific Ocean (2017)
  • Author(s): Chang Y.-L., Miyazawa Y., Oey L.-Y., Kodaira T., Huang S.
  • Journal Title: Journal of Geophysical Research-Oceans Volume: 122 Issue: 5 Pages: 4444-4455
  • DOI: 10.1002/2017jc012722
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Influence of the Oyashio Current and Tsugaru Warm Current on the circulation and water properties of Otsuchi Bay, Japan (2017)
  • Author(s): Ishizu, M, S. Itoh, K. Tanaka and K.Komatsu
  • Journal Title: Journal of Oceanography Volume: 73 Issue: 1 Pages: 115-131
  • DOI: 10.1007/s10872-016-0383-z
  • Peer Reviewed / Open Access
• [Journal Article] Collection of spawning-condition eels of Ariosoma meeki in the Kuroshio Current in the East China Sea (2016)
  • Author(s): Watanabe S., Hagihara S., Miller M.J., Machida M., Komatsu K., Nishida S. and Tsukamoto K.
  • Journal Title: Journal of the Marine Biological Association of the UK Volume: 96 Pages: 1701-1707
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Fortnightly variation in bottom thermal front and associated circulation in a semi-enclosed sea (2016)
  • Author(s): Yu, X., X. Guo, H. Takeoka
  • Journal Title: Journal of Physical Oceanography Volume: 46 Issue: 1 Pages: 159-177
  • DOI: 10.1175/jpo-d-15-0071.1
  • Peer Reviewed
• [Journal Article] Nutrient supply from a strait to a coastal basin indicated by the tidal frontal region in the Seto Inland Sea, Japan (2016)
  • Author(s): Komorita, T., Guo, X., Fujii, N., Yoshie, N., Takeoka, H.
  • Journal Title: Continental Shelf Research Volume: 112 Pages: 68-77
  • DOI: 10.1016/j.csr.2015.10.015
  • Peer Reviewed
• [Journal Article] Western Pacific and marginal sea processes (2016)
  • Author(s): Qu, T., Tozuka, T., Kida, S., Guo, X., Miyazawa, Y., Liu, Q.
  • Journal Title: Indo-Pacific Climate Variability and Predictability, World Scientific Series on Asia-Pacific Weather and Climate Volume: 7 Pages: 151-186
• [Journal Article] The status of coastal oceanography in heavily impacted Yellow and East China Sea: Past trends, progress, and possible futures (2015)
  • Author(s): Wang, X., Cho, Y., Guo X., Wu C., Zhou, J.
  • Journal Title: Estuarine, Coastal and Shelf Science Volume: 163 Pages: 235-243
  • DOI: 10.1016/j.ecss.2015.05.039
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A long-term volume transport time series estimated by combining in situ observation and satellite altimeter data in the northern South China Sea (2015)
  • Author(s): Zhu, X.-H., Zhao, R., Guo, X., Long, Y., Ma, Y., and Fan, X.
  • Journal Title: Journal of Oceanography Volume: 71 Issue: 6 Pages: 663-673
  • DOI: 10.1007/s10872-015-0305-5
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Impacts of interannual ocean circulation variability on Japanese eel larval migration in the western north Pacific ocean (2015)
  • Author(s): Chang, Y.-L., J. Sheng, K. Ohashi, M. Beguer-Pon, and Y. Miyazawa
  • Journal Title: PLoS ONE Volume: 10 Issue: 12 Pages: 1-25
  • DOI: 10.1371/journal.pone.0144423
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Effects of the STCC eddies on the Kuroshio based on the 20-years JCOPE2 reanalysis results (2015)
  • Author(s): Chang, Y., Y. Miyazawa, and X. Guo
  • Journal Title: Progress in Oceanography Volume: unknown Pages: 64-76
  • DOI: 10.1016/j.pocean.2015.04.006
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effect of mesoscale eddies on the Taiwan Strait Current (2015)
  • Author(s): Chang, Y., Y. Miyazawa, and X. Guo
  • Journal Title: Journal of Physical Oceanography Volume: unknown Issue: 6 Pages: 1651-1666
  • DOI: 10.1175/jpo-d-14-0248.1
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Nutrient transport along the Kuroshio and nutrient supply to the euphotic zone of the Kuroshio (2017)
  • Author(s): Hu, Y., Guo, X., Sasai, Y.
  • Organizer: 7th joint forum of Environmental sciences
  • Int'l Joint Research
• [Presentation] A numerical model for separating nutrients with different origins in the ecosystem of the East China Sea (2017)
  • Author(s): Jing Zhang, Xinyu Guo, Liang Zhao
  • Organizer: 7th Joint Forum of Environmental Sciences
  • Int'l Joint Research
• [Presentation] 豊後水道における栄養塩濃度の季節・経年変化 (2017)
  • Author(s): 中川美和・郭 新宇・吉江直樹
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Seasonal and interannual variations in the nutrient concentrations in the Bungo Channel, Japan (2017)
  • Author(s): Miwa Nakagawa, Xinyu Guo, Naoki Yoshie
  • Organizer: 7th Joint Forum of Environmental Sciences
  • Int'l Joint Research
• [Presentation] 黒潮による黒潮続流域表層への水塊輸送について (2017)
  • Author(s): 峯俊介, 小松幸生
  • Organizer: 水産海洋学会2017年度研究発表大会
• [Presentation] 黒潮・黒潮続流域における表層への栄養塩輸送量の見積り（I） (2017)
  • Author(s): 峯俊介, 小松幸生
  • Organizer: 日本海洋学会2017年度秋季大会
• [Presentation] 黒潮域における水平拡散係数のスケール依存性 (2017)
  • Author(s): 小松幸生, 廣江豊
  • Organizer: 日本海洋学会2017年度秋季大会
• [Presentation] Biogeochemical impacts of isopycnal nitrate transport along the Kuroshio (2017)
  • Author(s): Komatsu K, Hiroe Y, Yasuda I
  • Organizer: JPGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] 黒潮Nutrient Stream: 源流から続流域の構造・硝酸塩輸送・変動と生物生産へのインパクト (2017)
  • Author(s): 小松幸生, 廣江豊, 安田一郎
  • Organizer: 東京大学大気海洋研究所共同利用研究集会「黒潮域における混合と栄養塩供給・生物生産へ与える影響」
  • Place of Presentation: 東京大学,千葉県柏市
  • Invited
• [Presentation] : Water exchange across isobaths over the continental shelf of the East China Sea (2017)
  • Author(s): Zhang, J., Guo, X., L. Zhao, and Y. Miyazawa
  • Organizer: International Workshop on Mixing and Water Mass Modification in the East Asian Marginal Seas
  • Place of Presentation: 九州大学、福岡県春日市
  • Int'l Joint Research
• [Presentation] A numerical model for separating nutrients with different origins in the ecosystem of the East China Sea (2017)
  • Author(s): Zhang, J., Guo, X., L. Zhao
  • Organizer: 東シナ海および周辺海域の物質循環と生物生産に関わる物理化学生物過程研究集会
  • Place of Presentation: 九州大学、福岡県春日市
• [Presentation] Budget of nutrients and biogenic particles for upper and lower layers of the East China Sea (2017)
  • Author(s): Wang, Y., Guo, X., Zhao, L., Zhang, J.
  • Organizer: International Workshop on Mixing and Water Mass Modification in the East Asian Marginal Seas
  • Place of Presentation: 九州大学、福岡県春日市
  • Int'l Joint Research
• [Presentation] Numerical experiments on role of nutrients with different origins in the primary production in the East China Sea (2017)
  • Author(s): Wang, Y., Guo, X., Zhao, L.
  • Organizer: 平成29年度九州大学研究集会「東シナ海および周辺海域の物質循環と生物生産に関わる物理・化学・生物過程」
  • Place of Presentation: 九州大学、福岡県春日市
• [Presentation] 黒潮親潮移行域における硝酸塩の水平輸送量の収支 (Ⅱ) (2016)
  • Author(s): 小松幸生, 廣江 豊, 安田一郎, 増島雅親
  • Organizer: 日本海洋学会2016年度春季大会
  • Place of Presentation: 東京大学本郷キャンパス(東京都文京区)
  • Year and Date: 2016-03-14
• [Presentation] Impact of isopycnal transport of nitrate along the Kuroshio on the high productivity in the Kuroshio-Oyashio interfrontal zone (2016)
  • Author(s): Komatsu, K., Y. Hiroe, I. Yasuda and M. Masujima
  • Organizer: Ocean Sciences Meeting 2016
  • Place of Presentation: Ernest N. Morial Convention Center (New Orleans, USA)
  • Year and Date: 2016-02-25
  • Int'l Joint Research
• [Presentation] Phytoplankton change in the Kuroshio region of the East China Sea associated with the Kuroshio frontal eddy (2016)
  • Author(s): Yoshie, N., Sato, N., Nakagawa, M., Tsutsumi, E., Sasai, Y., and Guo, X.
  • Organizer: 2016 Ocean Science Meeting
  • Place of Presentation: New Orleans, USA
  • Year and Date: 2016-02-23
  • Int'l Joint Research
• [Presentation] Influence of ambient current on the temperature increasing rate of bottom cold water in a shelf sea: a case study of the Seto Inland Sea, Japan (2016)
  • Author(s): Yu, X., Guo, X., Takeoka, H.
  • Organizer: 2016 Ocean Sciences Meeting
  • Place of Presentation: New Orleans, USA
  • Year and Date: 2016-02-23
  • Int'l Joint Research
• [Presentation] 黒潮域における水平拡散係数の実態について (2016)
  • Author(s): 小松幸生, 廣江豊
  • Organizer: 水産海洋学会2016年度研究発表大会
  • Place of Presentation: 東京海洋大学, 東京都港区
• [Presentation] 高解像度漂流ブイによる黒潮域における水平拡散係数のスケール依存性 (2016)
  • Author(s): 小松幸生, 廣江豊
  • Organizer: 日本海洋学会2016年度秋季大会
  • Place of Presentation: 鹿児島大学, 鹿児島県鹿児島市
• [Presentation] Phytoplankton change in the Kuroshio region of the East China Sea associated with the Kuroshio frontal eddy (2015)
  • Author(s): Yoshie, N., Sato, N., Nakagawa, M., Tsutsumi, E., Sasai, Y., and Guo, X.:
  • Organizer: PICES2015 annual meeting
  • Place of Presentation: Qingdao, China
  • Year and Date: 2015-10-23
  • Int'l Joint Research
• [Presentation] Material exchange between a shelf sea and the Kuroshio and the downstream transport of nutrients along the Kuroshio (2015)
  • Author(s): Guo, X.
  • Organizer: International workshop on organic carbon cycle and biogeochemistry in marginal seas.
  • Place of Presentation: Qingdao, China
  • Year and Date: 2015-10-12
  • Int'l Joint Research / Invited
• [Presentation] 黒潮親潮移行域における硝酸塩の等密度面輸送量の収支 (2015)
  • Author(s): 小松幸生, 廣江 豊, 安田一郎, 増島雅親
  • Organizer: 水産海洋学会2015年度研究発表大会
  • Place of Presentation: 釧路市観光国際交流センター(北海道釧路市)
  • Year and Date: 2015-10-10
• [Presentation] Impact of nitrate transport along the Kuroshio on the high productivity in the Kuroshio-Oyashio interfrontal zone (2015)
  • Author(s): Komatsu, K., Y. Hiroe, I. Yasuda and M. Masujima
  • Organizer: IUGG2016
  • Place of Presentation: Prague Convention Center (Chez, Prague)
  • Year and Date: 2015-06-30
  • Int'l Joint Research
• [Presentation] Influences of mesoscale eddies on flow field around Taiwan (2015)
  • Author(s): Chang, Y.L., Miyazawa, Y., Guo, X.
  • Organizer: 平成２７年度名古屋大学地球水循環研究センター共同研究集会「東シナ海陸棚域の物質循環に関わる物理・化学・生物過程」
  • Place of Presentation: 名古屋大学（愛知県・名古屋市）
  • Year and Date: 2015-06-13
• [Presentation] Effect of mesoscale eddies on the Taiwan Strait Current. (2015)
  • Author(s): Chang, Y.L., Miyazawa, Y., Guo, X.
  • Organizer: The 18th Pacific-Asian Marginal Seas Meeting
  • Place of Presentation: Naha, Japan
  • Year and Date: 2015-04-23
  • Int'l Joint Research
• [Presentation] Responses of upper ocean ecosystem to Typhoon Damrey in South China Sea (2015)
  • Author(s): Shi, J., Pan, S., Gao, H., Guo, X.
  • Organizer: The 18th Pacific-Asian Marginal Seas Meeting
  • Place of Presentation: Naha, Japan
  • Year and Date: 2015-04-23
  • Int'l Joint Research
• [Presentation] 138度定線の黒潮横断面における硝酸塩の水平輸送量 (2015)
  • Author(s): 廣江 豊, 小松幸生, 児玉武稔, 市川忠史, 渡邊朝生, 安田一郎, O-line観測チーム
  • Organizer: 日本海洋学会2015年度春季大会
  • Place of Presentation: 東京海洋大学（東京都・品川区）
  • Year and Date: 2015-03-21 – 2015-03-25
• [Presentation] 黒潮親潮移行域における硝酸塩の水平輸送量の収支 (2015)
  • Author(s): 小松幸生, 廣江 豊, 安田一郎, 増島雅親
  • Organizer: 日本海洋学会2015年度春季大会
  • Place of Presentation: 東京海洋大学（東京都・品川区）
  • Year and Date: 2015-03-21 – 2015-03-25
• [Presentation] 黒潮の栄養塩輸送及びその東シナ海の基礎生産に与える影響 (2015)
  • Author(s): 郭 新宇，王 玉成，趙 亮
  • Organizer: 2015年度水産海洋シンポジウム豊かな魚類生産を支える黒潮 －その生物生産の仕組みと変動機構－
  • Place of Presentation: 東京海洋大学（東京都・品川区）
  • Year and Date: 2015-03-21
• [Presentation] Abrupt change in the plankton community in the Kuroshio region of the East China Sea associated with the Kuroshio frontal eddy (2014)
  • Author(s): Yoshie, N., Sakamoto, K., Nakagawa, M., Tsutsumi, E., Guo, X.
  • Organizer: AOGS
  • Place of Presentation: ロイトン札幌（北海道・札幌市）
  • Year and Date: 2014-07-28 – 2014-08-01
• [Presentation] Water and nutrient exchange between the continental shelf and the Kuroshio region in the East China Sea and its transport to downstream of the Kuroshio south of Japan (2014)
  • Author(s): Guo, X., Wang, Y.C.
  • Organizer: AOGS
  • Place of Presentation: ロイトン札幌（北海道・札幌市）
  • Year and Date: 2014-07-28 – 2014-08-01
  • Invited
• [Presentation] Downstream transport of nutrient by the Kuroshio and its temporal and spatial variations (2014)
  • Author(s): Guo, X., and Zhu, X.-H.
  • Organizer: IMBER Open Science Conference
  • Place of Presentation: Bergen(Norway)
  • Year and Date: 2014-06-23 – 2014-06-27
• [Presentation] Influence of nutrients with different sources on nutrient distribution and primary production in the East China Sea (2014)
  • Author(s): Guo, X., Wang, Y.C, Zhao, L., and Zhang, J.
  • Organizer: IMBER Open Science Conference
  • Place of Presentation: Bergen(Norway)
  • Year and Date: 2014-06-23 – 2014-06-27
• [Presentation] 黒潮域におけるマルチ観測の新展開2 (2014)
  • Author(s): 小松幸生
  • Organizer: 東京大学大気海洋研究所共同利用シンポジウム
  • Place of Presentation: 東京大学大気海洋研究所（千葉県・柏市）
  • Year and Date: 2014-05-30
• [Presentation] Interannual variability of Kuroshio nitrate flux and transport along western boundary in the North Pacific (2014)
  • Author(s): Sasai,Y., H.Sasaki, and M.Nonaka
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜会議センター（神奈川県・横浜市）
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] Transport of nutrients by the Kuroshio and its influences on the ecosystem of East China Sea (2014)
  • Author(s): Guo, X.
  • Organizer: 10th Cross-strait Ocean Sciences Conference
  • Place of Presentation: 台北(台湾)
  • Year and Date: 2014-04-28 – 2014-05-01