川上 創（かわかみ はじめ）
海洋研究開発機構 地球情報科学技術センター
研究データ公開技術グループ
住所：236-0001 神奈川県横浜市金沢区昭和町3173-25
Eメール：
研究テーマ
観測及び映像データの管理及び公開について
過去の研究テーマ
実験教室等を用いた最先端の海洋科学及び地球科学の一般への普及
234Thを 用いた北西部北太平洋における生物ポンプ能力評価に関する研究
210Poを用いた西部北太平洋の中層における生物ポンプ能力の南北比較
取材協力
Blue Earth 109号 P8-9「生物によるCO2吸
収能力が弱くなっている？」
学歴
北海道大学水産学部卒業 1993年
北海道大学大学院水産学研究科修士課程修了 1996年
北海道大学大学院水産学研究科博士後期課程退学 1997年
北海道大学大学院環境科学院論文博士取得 2009年
職歴
海洋科学技術センター（現海洋研究開発機構）海洋観測研究部 1997-2001年
フロンティア研究推進室 2001-2002年
海洋研究開発機構むつ研究所 2002-2014年
広報部広報課 2014-2017年
地球情報科学技術センター 2017年-
映像等
データセット
観測点K2/S1における210Po, 210Pb, POC, PONデータ
西部北太平洋亜寒帯域における沈降粒子中の230Th及び231Pa
1998年北西部北太平洋における210Po, 210Pbデータ
論文（査読あり）
40. Kawakami, H.:
Decadal decreasing trend in biological carbon pump estimated from 234Th in the western subarctic North Pacific.
Journal of Radioanalytical and Nuclear Chemistry, 10.1007/s10967-024-09404-x (2024).
39. Nagashima, K., Kawakami, H.,
Sugie, K., Fujiki, T., Nishioka, J., Iwamoto, Y., Takemura, T., Miyakawa, T., Taketani, F., Noguchi Aita, M.:
Asian dust-deposition flux to the subarctic Pacific estimated using single quartz particles.
Scientific Reports 13, 15424 (2023).
38. Mino, Y., Sukigara, C., Kawakami, H.,
Wakita, M., Honda, M.C.:
Mesopelagic particulate nitrogen dynamics in the subarctic and subtropical regions of the western North Pacific.
Frontiers in Earth Science 11, 1176889 (2023).
37. Mino, Y., Sukigara, C., Honda, M., Kawakami, H.,
Wakita, M., Sasaoka, K., Yoshikawa, C., Abe, O., Kaiser, J., Kimoto, K., Kitamura, M., Fujiki, T., Matsumoto, K., Saino, T.:
Seasonal and interannual variations in nitrogen availability and
particle export in the northwestern North Pacific subtropical gyre.
Journal of Geophysical Research: Oceans 125, e2019JC015600 (2020).
36. Sukigara, C., Mino, Y., Kawakami, H.,
Honda, M., Fujiki, T., Matsumoto, K., Wakita, M.: Sinking dynamics of
particulate matter in the subarctic and subtropical regions of the
western North Pacific. Deep-Sea Research I 144, 17-27 (2019).
35. Uchimiya, M., Fukuda, H., Wakita, M., Kitamura, M., Kawakami, H.,
Honda, M.C., Ogawa, H., Nagata, T.: Balancing organic carbon supply and
consumption in the ocean’s interior: evidence from repeated
biogeochemical observations conducted in the subarctic and subtropical
western North Pacific. Limnology and Oceanography 63, 2015-2027
(2018).
34. Kitamura,
M., Honda, M.C., Hamajima, Y., Kumamoto, Y., Aoyama, M., Kawakami, H.,
Aono, T., Fukuda, M.,Mino, Y.: Temporal changes in radiocesium
contamination derived from the Fukushima Dai-ichi Nuclear Power Plant
accident in oceanic zooplankton in the western North Pacific. Journal
of Environmental Radioactivity 172, 163-172 (2017).
33. Honda, M.C., Matsumoto, K., Fujiki, T., Siswato, E., Sasaoka, K., Sasaoka, K., Kawakami, H.,
Wakita, M., Mino, Y., Sukigara, C., Kitamura,
M., Sasai, Y., Smith, S.L., Hashioka, T., Yoshikawa, C., Kimoto, K.,
Watanabe, S., Kobari, T., Nagata, T., Hamasaki, K., Kaneko, R.,
Uchimiya, M., Fukuda, H., Abe,
O., Saino, T.: Comparison of carbon cycle between the western Pacific
subarctic and subtropical time-series stations: highlights of the K2S1
project. Journal of
Oceanography 73, 647-667 (2017).
32. Mino, Y., Sukigara, C., Honda, M.C., Kawakami, H., Matsumoto, K., Wakita, M., Kitamura, M., Fujiki, T., Sasaoka, K., Abe, O., Kaise, J., Saino, T.: Seasonal variations in the nitrogen isotopic composition of settling particles at station K2 in the western subarctic North Pacific. Journal of Oceanography 72, 819-836 (2016).
31. Wakita, M., Honda, M.C., Matsumoto, K., Fujiki, T., Kawakami, H., Yasunaka, S., Sasai, Y., Sukigara, C., Uchimiya, M., Kitamura, M., Kobari, T., Mino, Y., Nagano, A., Watanabe, S., Saino, T.: Biological organic carbon export estimated from the annual carbon budget observed in the surface waters of the western subarctic and subtropical North Pacific Ocean from 2004 to 2013. Journal of Oceanography 72, 665-685 (2016).
30. Kobari, T., Nakamura, R., Unno, K., Kitamura, M., Nagafuku, H., Niibo, A., Kawakami, H., Matsumoto, K., Honda, M.C.: Seasonal variability in carbon demand and flux by mesozooplankton communities at subarctic and subtropical sites in the western North Pacific Ocean. Journal of Oceanography 72, 403-418 (2016).
29. Honda, M.C., Kawakami, H., Matsumoto, K., Fujiki, T., Mino, Y., Sukigara, C., Kobari, T., Uchimiya, M., Kaneko, R., Saino, T.: Comparison of sinking particles in the upper 200 m between subarctic station K2 and subtropical station S1 based on drifting sediment trap experiments. Journal of Oceanography 72, 373-38 (2016).
28. Buesseler, K.O., German, C.R., Honda, M.C., Otosaka, S, Black, E.E., Kawakami, H., Manganini, S.J., Pike, S.M.: Tracking the Fate of Particle Associated Fukushima Daiichi Cesium in the Ocean off Japan. Environmental Science & Technology 49, 9807-9816 (2015).
27. Kawakami, H., Honda, M.C., Matsumoto, K., Wakita, M., Kitamura, M., Fujiki, T., Watanabe, S.: POC fluxes estimated from 234Th in late spring-early summer in the western subarctic North Pacific. Journal of Oceanography 71, 311-324 (2015).
26. Matsumoto, K., Honda, M.C., Sasaoka, K., Wakita, M., Kawakami, H., Watanabe, S.: Seasonal variability of primary production and phytoplankton biomass in the western Pacific subarctic gyre: Control by light availability within the mixed layer. Journal of Geophysical Research: Oceans 119, 6523-6534 (2014).
25. Honda, M.C., Kawakami, H.: Sinking velocity of particulate radiocesium in the northwestern North Pacific. Geophysical Research Letters, 10.1002/2014GL060126 (2014).
24. Kawakami, H., Honda, M.C., Watanabe, S., Saino, T.: Time-series observations of 210Po and 210Pb radioactivity in the western North Pacific. Journal of Radioanalytical and Nuclear Chemistry 301, 461-468 (2014).
23. Fujiki, T., Matsumoto, K., Mino, Y., Sasaoka, K., Wakita, M., Kawakami, H., Honda, M.C., Watanabe, S., Saino, T.: Seasonal cycle of phytoplankton community structure and photophysiological state in the western subarctic gyre of the North Pacific. Limnology and Oceanography 59, 887-900 (2014).
22. Kitamura, M., Kumamoto, Y., Kawakami, H., Cruz, E.C., Fujikura, K.: Horizontal distribution of Fukushima-derived radiocesium in zooplankton in the northwestern Pacific Ocean. Biogeosciences 10, 5729-5738 (2013).
21. Kobari, T., Kitamura, M., Minowa, M., Isami, H., Akamatsu, H., Kawakami, H., Matsumoto, K., Wakita, M., Honda, M.C.: Impacts of the wintertune nesozooplankton community to downward carbon flux in the subarctic and subtropical Pacific Oceans. Deep-Sea Research I 81, 78-88 (2013).
20. Honda, M.C., Kawakami, H., Watanabe, S., Saino, T.: Concentration and vertical flux of Fukushima-derived radiocesium in sinking particles from two sites in the Northwestern Pacific Ocean. Biogeosciences 10, 3525-3534 (2013).
19. Wakita, M., Watanabe, S., Honda, M.C., Nagano, A., Kimoto, K., Matsumoto, K., Kawakami, H., Fujiki, T., Kitamura, M., Sasaki, K., Sasaoka, K., Nakono, Y., Murata, A.: Ocean acidification from 1997 to 2011 in the subarctic western North Pacific Ocean. Biogeosciences 10, 7817-7827 (2013).
18. Fukuda, M., Harada, N., Sato, M., Lange, C. B., Ahagon, N., Kawakami, H., Miyashita, W., Pantoja, S., Matsumoto, T., Motoyama, I.: 230Th-normalized fluxes of biogenic components from the central and southernmost Chilean margin over the past 22,000 years. Geochemical Journal 47, 119-135 (2013).
17. Harada, N., Kawakami, H., Fukuda, M., Miyashita, W., Matsumoto, T.: 230Th-normalized fluxes of biogenic components from the central Chilean margin during the late Quaternary. Journal of Geography 121, 555-569 (2012).
16. Matsumoto, K., Fujiki, T., Honda, M.C., Wakita, M.,Kawakami, H., Kitamura, M., Saino, T.: Inhibition of primary production by nitrile rubber O-rings in Niskin sampler. JAMSTEC Report of Research and Development 14, 17-25 (2012).
15. Honda, M.C., Aono, T., Aoyama, M., Hamajima, Y., Kawakami, H., Kitamura, M., Masumoto, Y., Miyazawa, Y., Takigawa, M., Saino, T.: Dispersion of artificial caesium-134 and -137 in the western North Pacific one month after the Fukushima accident. Geochemical Journal 46, e1-e9 (2012).
14. Shigemitsu, M., Watanabe, Y.W., Yamanaka, Y., Kawakami, H., Honda, M.C.: Relationship between sinking organic matter and minerals in the shallow zone of the western subarctic Pacific. Journal of Oceanography 66, 697-708 (2010).
13. Kawakami, H., Honda, M.C., Matsumoto, K., Fujiki, T., Watanabe, S.: East-west distribution of nutrients and dissolved inorganic carbon in the northern North Pacific in autumn. The Open Oceanography Journal 4, 99-106 (2010).
12. Kawakami, H., Honda, M.C., Matsumoto, K., Fujiki, T., Watanabe, S.: East-west distribution of POC fluxes estimated from 234Th in the northern North Pacific in autumn. Journal of Oceanography 66, 71-83 (2010).
11. Honda, M.C., Sasaoka, K., Kawakami, H., Matsumoto, K., Watanabe, S., Dickey T.D.: Application of underwater optical data to estimation of primary productivity. Deep-Sea Research I 56, 2281-2292 (2009).
10. Kawakami, H.: Scavenging of 210Po and 234Th by particulate organic carbon in the surface layer of the northwestern North Pacific Ocean. Far East Journal of Ocean Research 2, 67-82 (2009).
9. Kawakami, H., Yang Y.-L., Kusakabe, M.: Distributions of 210Po and 210Pb radioactivity in the intermediate layer of the northwestern North Pacific. Journal of Radioanalytical and Nuclear Chemistry 279, 561-566 (2009).
8. Fujiki, T., Matsumoto, K., Honda, M.C., Kawakami, H., Watanabe, S.: Phytoplankton composition in the subarctic North Pacific during autumn 2005. Journal of Plankton Research 31, 179-191 (2009).
7. Kawakami, H., Kusakabe, M.: Surface water mixing estimated from 228Ra and 226Ra in the northwestern North Pacific. Journal of Environmental Radioactivity 99, 1335-1340 (2008).
6. Kawakami, H., Honda, M.C., Wakita., M, Watanabe, S.: Time-series observation of dissolved inorganic carbon and nurtients in the northwestern North Pacific. Journal of Oceanography 63, 967-982 (2007).
5. Kawakami, H., Honda, M.C.: Time-series observation of POC fluxes estimated from 234Th in the northwestern North Pacific. Deep-Sea Research I 54, 1070-1090 (2007).
4. Honda, M.C., Kawakami, H., Sasaoka, K., Watanabe, S., Dickey, T.: Quick transport of primary produced organic carbon to the ocean interior. Geophysical Research Letters 33, 10.1029/2006GL026466 (2006).
3. Kawakami, H., Yang, Y-L., Honda, M. C., Kusakabe, M.: Particulate organic carbon fluxes estimated from 234Th deficiency in winters and springs in the northwestern North Pacific. Geochemical Journal 38, 581-592 (2004).
2. Murata, A., Kumamoto, Y., Saito, C., Kawakami, H., Asanuma, I., Kusakabe, M., Inoue, H.Y.: Impact of a spring phytoplankton bloom on the CO2 system in the mixed layer of the northwestern North Pacific. Deep-Sea Research II 49, 5531-5555 (2002).
1. Kuma, K., Katsumoto, A., Kawakami, H., Takatori, F., Matsunaga, K.: Spatial variability of Fe(III) hydroxide solubility in the water column of the northern North Pacific. Deep-Sea Research I 45, 91-113 (1998).
競争的資金等
2012-2017年度 科研費 新学術領域研究「福島原発事故により放出された放射性核種の環境動態に関する学際的研究」連携研究者
2012-2016年度 東北マリンサイエンス拠点形成事業「沖合底層生態系の変動メカニズムの解明」参画者
2011-2014年度 科研費 基盤研究(A)「海洋生物ポンプにおけるエアロゾルの役割」連携研究者
2011-2012年度 戦略的国際科学技術協力推進事業「沈降粒子による人工放射性核種の海洋内輸送に関する調査研究」参画者
2010-2012年度 科研費 若手研究(B)「放射性核種を用いた海洋中層における有機炭素粒子沈降量の見積り」研究代表者
その他
PADI アドバンスド・オープンウォーター・ダイバー
全日本スキー連盟 １級
