研究業績 (2016~)

英文誌 (査読付)

2024


Shimizu, Y., Sugihara, M., Fujinaga, K., Nakamura, K. & Kato, Y. (2024) Air-Lift Pumping System for Hybrid Mining of Rare-Earth Elements-Rich Mud and Polymetallic Nodules around Minamitorishima Island. Journal of Marine Science and Engineering, 12, 1470.



Azami, K., Doshita, T., Koyama, K., Machida, S., Nakamura, K., Kato, Y. and Uchida, E. (2024) Formation of hydrothermal ferromanganese oxides in the Daini-Nishi-Yamato Seamount, Sea of Japan: Do they really contain critical-metal particles? Ore Geology Reviews, 172, 106202.



Niederbockstruck, B., Jones, H.L., Yasukawa, K., Raffi, I., Tanaka, E., Westerhold, T., Ikehara, M. & Röhl, U. (2024) Apparent Diachroneity of Calcareous Nannofossil Datums During the Early Eocene in the High-Latitude South Pacific Ocean. Paleoceanography and Paleoclimatology, 39, e2023PA004801.



Nozaki, T., Goto, K., Takaya, Y., Shimada, K., Owada, A., Shimoda, G., Kimura, J.-I., Chang, Q., Onoue, T., Machida, S., Ishii, T., Shimizu, K., Hirano, N., Mimura, K., Yano, M., Ohta, J. & Kato, Y. (2024) Petrography and stratigraphic Os isotopic ages of ferromanganese nodules from the Northwest Pacific east of Minamitorishima Island. Journal of Asian Earth Sciences: X, 11, 100176.



Mimura, K., Nakamura, K., Yasukawa, K., Sibert, E. C., Ohta, J., Kitazawa, T. & Kato, Y. (2024) Applicability of Object Detection to Microfossil Research: Implications From Deep Learning Models to Detect Microfossil Fish Teeth and Denticles Using YOLO-v7. Earth and Space Science, 11, e2023EA003122.



Sato, H., Machida, S., Meyzen, C. M., Ishizuka, O., Senda, R., Bizimis, M., Ashida, K., Mikuni, K. Sato, T., Fujii, M., Nogi, Y. & Kato, Y. (2024) The Conrad Rise Revisited: Eocene to Miocene Volcanism and Its Implications for Magma Sources and Tectonic Development. JGR Solid Earth, 129, e2023JB027380.



Nakamura, K., Horinouchi, K., Shimomura, R., Machida, S., Yasukawa, K., Fujinaga, K., Nozaki, T. & Kato, Y. (2024) Geochemical insights into secular changes in the depositional environment of ferromanganese nodules in the western North Pacific. Deep Sea Research Part I: Oceanographic Research Papers, 203, 104227.


2023


Ishida, M., Fujinaga, K., Tanimizu, M., Ishikawa, T., Nagaishi, K. & Kato, Y. (2023) New Pb isotopic data from Japanese hydrothermal deposits for tracing heavy metal sources. Geochemistry, xxx, 126045.



Usui, Y., Yasukawa, K., Iijima, K., Machiyama, H., Ichiyama, Y., Tanaka, E. & Fujinaga, K. (2023) X-ray computed tomography of deep-sea clay as tools to detect rare earth elements and yttrium enrichment.

Island Arc, 32, e12503.


Dana, C.D.P., Agangi, A., Idrus, A., Chelle-Michou, C., Lai, C.-K., Ishida, M., Guillong, M., González-Álvarez, I., Takahashi, R., Yano, M., Mimura, K., Ohta, J., Kato, Y., Simbolon, D.R. & Xia, X.-P. (2023) The Age and Origin of the Ruwai Polymetallic Skarn Deposit, Indonesia: Evidence of Cretaceous Mineralization in the Central Borneo Metallogenic Belt. Economic Geology, 118, 1341–1370. 



Nakamura, K. (2023) A practical approach for discriminating tectonic settings of basaltic rocks using machine learning. Applied Computing and Geosciences, 19, 100132.



Sato, H., Nozaki, T., Onoue, T., Ishikawa, A., Soda, K., Yasukawa, K., Kimura, J.-I., Chang, Q., Kato, Y. & Rigo, M. (2023) Rhenium-osmium isotope evidence for the onset of volcanism in the central Panthalassa Ocean during the Norian "chaotic carbon episode". Global and Planetary Change, 229, 104239.



Azami, K., Koyama, K., Machida, S., Okino, K., Yasukawa, K., Kato, Y. & Uchida, E. (2023) Formation of hydrothermal ferromanganese oxides from the Daigo-Kume Knoll in the middle Okinawa Trough, Japan. Marine Geology, 463, 107117.



Miyazaki, T., Yasukawa, K., Tanaka, E., Vaglarov, B.S., & Yoshida, K. (2023) Ba stable isotope excursions induced by multiple hyperthermal events: A potential new index for transient global warming. Geochemical Journal, 57, e1-e8. **Goldschmidt2024 Geochemical Journal Award**



Yasukawa, K., Tanaka, E., Miyazaki, T., Vaglarov, B.S., Chang, Q., Nakamura, K., Ohta, J., Fujinaga, K., Iwamori, H. & Kato, Y. (2023) High-Dimensional Chemostratigraphy of Pelagic Clay in the Western North Pacific Ocean Revealed via an Unsupervised Clustering Approach. Paleoceanography and Paleoclimatology 38, e2023PA004644.



Ishida, M., Murakami, S., Machida, S., Fujinaga, K., Yasukawa, K., Ishikawa, T., Nagaishi, K., Tajiri, R., Nakamura, K. and Kato, Y. (2023) Geochemistry of Neogene Nansatsu volcanic rocks in South Kyushu, Japan. International Geology Review, 1-11.



Azami, K., Machida, S., Hirano, N., Nakamura, K., Yasukawa, K., Kogiso, T., Nakanishi, M. & Kato, Y. (2023) Hydrothermal ferromanganese oxides around a petit-spot volcano on old and cold oceanic crust. Communications Earth & Environment, 4, 191.


Terauchi, D., Shimomura, R., Machida, S., Yasukawa, K., Nakamura, K. & Kato, Y. (2023) X-ray Computed Tomography Analysis of Ferromanganese Nodule Nuclei from the Western North Pacific Ocean: Insights into Their Origins. Minerals, 13, 710.


Dekov, V. M., Yasuda, K., Kamenov, G., Yasukawa, K., Guéguen, B., Kano, A., Yoshimura, T., Yamanaka, T., Bindi, L., Okumura, T., Asael, D., Araoka, D. & Kato, Y. (2023) Mn-carbonate deposition in a seafloor hydrothermal system (CLAM field, Iheya Ridge, Okinawa Trough): Insights from mineralogy, geochemistry and isotope studies. Marine Geology, 460, 107055



Mimura, K., Nakamura, K., Takao, K., Yasukawa, K. & Kato. Y. (2023) Automated detection of hydrothermal emission signatures from Multi-Beam Echo Sounder Images using deep learning.  IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 16, 2703-2710



Tanaka, E., Mimura, K., Nakamura, K., Ohta, J., Yasukawa, K. & Kato, Y. (2023) Rare-earth elements in deep-sea sediments in the South Pacific Gyre: Source materials and resource potentials. Geochemistry, Geophysics, Geosystems, 24, e2022GC010681.



Mimura, K. & Nakamura, K.: Datasets for training and validating a deep learning-based system to detect microfossil fish teeth from slide images. Data in Brief, 47, 108940.



Yano, M., Yasukawa, K., Nozaki, T., Fujinaga, K., Ohta, J., Nakamura, K. & Kato, Y. (2023) Marine osmium isotopic composition reconstructed from the early Permian umber deposit in the Japanese accretionary complex. Journal of Asian Earth Sciences, 241, 105480.



2022


Zhang, X. Y., Chen, L. H., Wang, X. J., Hanyu, T., Hofmann, A. W., Komiya, T., Nakamura, K., Kato, Y., Zeng, G., Gou, W. X & Li, W. Q. (2022) Zinc isotopic evidence for recycled carbonate in the deep mantle. Nature Communications, 13, 6085.



Akizawa, N., Hirano, N., Machida, S., Ishikawa, A., Niwa, Y., Shimoda, G., Yasukawa, K.,  Matsuzaki, M, K., Tamura, C., Kaneko, J., (2022) Rock and sediment samples were collected from petit-spots in the northwestern Pacific. Data in Brief , 45, 108764.



Azami, K., Yasukawa, K. & Kato, Y. (2022) Geochemistry of ferromanganese nodules in the soil of Okinawa Island, Japan: Paleoclimatic implications and discrimination scheme of the nodule origins. Journal of Asian Earth Sciences: X, 8, 100127.



Yasukawa, K., Ohta, J., Hamada, M., Chang, Q., Nakamura, H., Ashida, K., Takaya, Y., Nakamura, K., Iwamori, H. & Kato, Y. (2022)  Essential processes involving REE-enrichment in biogenic apatite in deep-sea sediment decoded via multivariate statistical analyses. Chemical Geology, 614, 121184.



Dekov, V. M., Kyono, K., Yasukawa, K., Guéguen, B., Ivarsson, M., Kamenov, G. D., Yamanaka, T., Asael, D., Ishida, M., Cavalcante, L. L., Kato, Y., Toki, T., Ishibashi, J.-I. (2022)  Mineralogy, geochemistry and microbiology insights into precipitation of stibnite and orpiment at the Daiyon-Yonaguni Knoll (Okinawa Trough) hydrothermal barite deposits. Chemical Geology, 610, 121092.



Kuwahara, Y., Fujinaga, K., Nozaki, T., Ohta, J., Yano, M., Yasukawa, K.,  Nakamura, K. and Kato, Y. (2022) Iron deposition during recovery from Late Devonian oceanic anoxia: Implications of the geochemistry of the Kawame ferromanganese deposit, Nedamo Belt, Northeast Japan. Global and Planetary Change, 216, 103920.

 


Mimura, K., Minabe, S., Nakamura, K., Yasukawa, K., Ohta, J. and Kato, Y. (2022) Automated detection of microfossil fish teeth from slide images using combined deep learning models. Applied Computing and Geosciences, 16, 100092.



Tanaka, E., Yasukawa, K., Ohta, J. and Kato, Y. (2022) Enhanced continental chemical weathering during the multiple early Eocene hyperthermals: New constraints from the southern Indian Ocean. Geochimica et Cosmochimica Acta, 331, 192-211.



Nozaki, T.,  Ishida, M., Takaya, Y., Chang, Q., Kimura, J.-I. and Kato, Y. (2022) Depth Profiles of Re-Os Geochemistry in Drill Cores from Hole U1530A in Brothers Volcano Hydrothermal Field, Kermadec Arc: Mobilization and Extreme Enrichment of Os by Volcanic Gas. Economic Geology, XX, XXX



Azami, K., Hirano, N., Kimura, J.-I., Chang, Q., Sumino, H., Machida, S.. Yasukawa, K. and Kato, Y. (2022) 87Sr/86Sr Isotopic Ratio of Ferromanganese Crusts as a Record of Detrital Influx to the Western North Pacific Ocean, Mineral, 12, 943. **Feature Paper**



Ohta, J., Nozaki, T., Sato, H., Ashida, K. and Kato, Y. (2022) Precise and accurate analytical method for determination of osmium isotope ratios at the 1–15 pg level by MC-ICP-MS equipped with sparging introduction and high-sensitivity discrete dynode-type ion-counting detectors. Journal of Analytical Atomic Spectrometry, 37, 1600-1610.



Sato, H., Machida, S., Ashida, K., Senda, R., Nakamura, K. and Yoneda, S. (2022) Unradiogenic lead isotopic signatures of the source mantle beneath the southernmost segment of the  Central Indian Ridge, Lithos, 424-425, 106774. 



Machida, S. and Nakamura, K. (2022) Editorial for Special Issue “Deep-Sea Ferromanganese Nodules and Related Mineral Resources: Genesis, Exploration, and Mining”, Minerals, 12, 686.



Tanaka, E., Yasukawa, K., Nakamura, K., Ohta, J., Miyazaki, T., Vaglarov, B.S.,  Machida, S.,  Fujinaga, K., Iwamori, H. and Kato, Y. (2022) Secular Variations in Provenance of Sedimentary Components in the Western North Pacific Ocean Constrained by Sr Isotopic Features of Deep-Sea Sediments. Geochemistry, Geophysics, Geosystems, 23, e2021GC009729.



Fujinaga, K., Nakamura, K., Ohta, J., Yano, M., Kuwahara, Y., Yasukawa, K., Takaya, Y., Nakayama, K., Nozaki, T. and Kato, Y. (2022) Umber as a lithified REY-rich mud in Japanese accretionary complexes and its implications for the osmium isotopic composition of Middle Cretaceous seawater. Ore Geology Reviews, 142, 104683.



Ishida, M., Nozaki, T., Takaya, Y., Ohta, J., Chang, Q., Kimura, J.-I., Nakamura, K. and Kato, Y. (2022) Re–Os geochemistry of hydrothermally altered dacitic rock in a submarine volcano at Site U1527, IODP Expedition 376: Implications for the Re cycle in intraoceanic arcs. Deep Sea Research Part I: Oceanographic Research Papers, 180, 103687. **Editor’s choice**



2021


Machida, S., Shimomura, R., Nakamura, K., Kogiso, T. and Kato, Y. (2021) Intermittent Beginning to the Formation of Hydrogenous Ferromanganese Nodules in the Vast Field: Insights from Multi-Element Chemostratigraphy Using Microfocus X-ray Fluorescence. Minerals, 11, 1246. **Feature Paper**



Nakamura, K., Terauchi, D., Shimomura, R., Machida, S., Yasukawa, K., Fujinaga, K. and Kato, Y. (2021) Three-Dimensional Structural Analysis of Ferromanganese Nodules from the Western North Pacific Ocean Using X-ray Computed Tomography. Minerals, 11, 1100. **Feature Paper**



Eliwa, H. A., Deevsalar, R., Mahdy, N. M., Kumar, S., El-Gameel, Kh., Zafar, T., Khalaf, I. M., Murata, M., Ozawa, H., Andresen, A., Chew, D., Fawzy, M. M., Afandy, A., Kato, Y. & Fujinaga, K. (2021) Field, textural, geochemical, and isotopic constraints on the origin and evolution of the magmatic microgranular enclaves from the Gharib Granitoid Complex, North Eastern Desert, Egypt. Precambrian Research, 365, 106380.



Ohta, J., Yasukawa, K., Nakamura, K., Fujinaga, K., Iijima, K. & Kato, Y. (2021) Geological features and resource potential of deep-sea mud highly enriched in rare-earth elements in the Central Pacific Basin and the Penrhyn Basin. Ore Geology Reviews, 129, 104440.



Ishida, M., Romero, R., Leisen, M., Yasukawa, K., Nakamura, K., Barra, F., Reich, M., Kato, Y. (2021) Auriferous pyrite formed by episodic fluid inputs in the Akeshi and Kasuga high-sulfidation deposits, Southern Kyushu, Japan. Mineralium Deposita, published online.



Kuwahara, Y., Yasukawa, K., Fujinaga, K., Nozaki, T., Ohta, J., Sato, H., Kimura, J.-I., Nakamura, K., Yokoyama, Y. & Kato, Y. (2021) Rapid coupling between solid earth and ice volume during the Quaternary. Scientific Reports, 11, 5695.



Udaeta, M.C., Kim, Y., Yasukawa, K., Kato, Y., Fujita, T. and Dodbiba, G. (2021) Study on the synthesis of hydroxyapatite under highly alkaline conditions. Industrial & Engineering Chemistry Research, 60, 4385-4396.



Yasukawa, K., Kino, S., Ohta, J., Azami, K., Tanaka, E., Mimura, K., Fujinaga, K., Nakamura, K. & Kato, Y. (2021) Stratigraphic variations of Fe-Mn micronodules and implications for the formation of extremely REY-rich mud in the western North Pacific Ocean. Minerals, 11, 270.



Sato, H., Machida, S., Senda, R., Sato, K., Kumagai, H., Hyodo, H., Yoneda, S. and Kato, Y. (2021) Petrology, geochemistry, and geochronology of plutonic rocks from the present Southwest Indian Ridge: Implications for dropstone distribution in the Indian Ocean. Polar Science, 29, 100725.



Machida, S., Nakamura, K., Kogiso, T., Shimomura, R., Horinouchi, K., Okino, K., and Kato, Y. (2021) Fine‐scale chemostratigraphy of cross‐sectioned hydrogenous ferromanganese nodules from the western North Pacific. Island Arc, 30, e12395.



Hirano, N., Sumino, H., Morishita, T., Machida, S., Kawano, T., Yasukawa, K., Hirata, T., Kato, Y., & Ishii, T. (2021) A Paleogene magmatic overprint on Cretaceous seamounts of the western Pacific. Island Arc, 30, e12386.



Machida, S., Sato, T., Yasukawa, K., Nakamura, K., Iijima, K., Nozaki, T., & Kato, Y. (2021). Visualisation method for the broad distribution of seafloor ferromanganese deposits. Marine Georesources and Geotechnology.




2020


Yano, M., Yasukawa, K., Nakamura, K., Ikehara, M. & Kato, Y. (2020) Geochemical features of redox-sensitive trace metals in sediments under oxygen-depleted marine environments. Minerals, 10(11), 1021.



Sato, H., Takaya, Y., Yasukawa, K., Fujinaga, K., Onoue, T. & Kato, Y. (2020) Biotic and environmental changes in the Panthalassa Ocean across the Norian (Late Triassic) impact event. Progress in Earth and Planetary Science, 7, 61



Yasukawa, K., Kino, S., Azami, T., Tanaka, E., Mimura, K., Ohta, J., Fujinaga, K., Nakamura, K. & Kato, Y. (2020) Geochemical features of Fe-Mn micronodules in deep-sea sediments of the western North Pacific Ocean: Potential for co-product metal extraction from REY-rich mud. Ore Geology Reviews, 127, 103805



Tanaka, E., Nakamura, K., Yasukawa, K., Mimura, K., Fujinaga, K., Iijima, K., Nozaki, T., & Kato, Y. (2020). Chemostratigraphy of deep-sea sediments in the western North Pacific Ocean: Implications for genesis of mud highly enriched in rare-earth elements and yttrium. Ore Geology Reviews, 119, 103392. 



Ohta, J., Yasukawa, K., Nozaki, T., Takaya, Y., Mimura, K., Fujinaga, K., Nakamura, K., Usui, Y., Kimura, J.-I., Chang, Q., Chang, Q., & Kato, Y. (2020). Fish proliferation and rare-earth deposition by topographically induced upwelling at the late Eocene cooling event. Scientific Reports, 10, 9896.  **Editor’s choice: Geochemistry (Biogeochemistry) **



El-Bialy, M.Z., Eliwa, H.A., Mahdy, N.M., Murata, M., El-Gameel, K.H., Sehsah, H., Omara, M., Kato, Y., Fujinaga, K., Andresen, A. & Thomsen, T.B. (2020) U-Pb zircon geochronology and geochemical constraints on the Ediacaran continental arc and post-collision Granites of Wadi Hawashiya, North Eastern Desert, Egypt: Insights into the ~600 Ma crust-forming Event in the northernmost part of Arabian-Nubian Shield. Precambrian Research, 345, 105777.



Tanaka, E., Nakamura, K., Yasukawa, K., Mimura, K., Fujinaga, K., Ohta, J., Iijima, K., Nozaki, T., Machida, S., & Kato, Y. (2020). Chemostratigraphic correlations of deep-sea sediments in the western north pacific ocean: A new constraint on the distribution of mud highly enriched in rare-earth elements. Minerals, 10(6), 1–19.



Miyazaki, J., Ikuta, T., Watsuji, T.-O., Abe, M., Yamamoto, M., Nakagawa, S., Takaki, Y., Nakamura, K., & Takai, K. (2020). Dual energy metabolism of the Campylobacterota endosymbiont in the chemosynthetic snail Alviniconcha marisindica. ISME Journal, 14(5), 1273–1289.




2019


Yasukawa, K., Ohta, J., Miyazaki, T., Vaglarov, B. S., Chang, Q., Ueki, K., Toyama, C., Kimura, J.-I., Tanaka, E., Nakamura, K., Iwamori, H., & Kato, Y. (2019). Statistic and Isotopic Characterization of Deep-Sea Sediments in the Western North Pacific Ocean: Implications for Genesis of the Sediment Extremely Enriched in Rare Earth Elements. Geochemistry, Geophysics, Geosystems, 20(7), 3402–3430. ** Geochemistry, Geophysics, Geosystems "2018-19 Top downloaded paper" (top 10%) **



Sakai, S., Hirano, N., Dilek, Y., Machida, S., Yasukawa, K., & Kato, Y. (2019). Tokoro Belt (NE Hokkaido): An exhumed, Jurassic - Early Cretaceous seamount in the Late Cretaceous accretionary prism of northern Japan. Geological Magazine.



Takaya, Y., Wu, M., & Kato, Y. (2019). Unique environmental conditions required for dawsonite formation: Implications from dawsonite synthesis experiments under alkaline conditions. ACS Earth and Space Chemistry, 3(2), 285–294. 



Nozaki, T., Ohta, J., Noguchi, T., Sato, H., Ishikawa, A., Takaya, Y., Kimura, J.-I., Chang, Q., Shimada, K., Ishibashi, J.-I., Yasukawa, K., Kimoto, K., Iijima, K., & Kato, Y. (2019). A Miocene impact ejecta layer in the pelagic Pacific Ocean. Scientific Reports, 9, 16111.



Nozaki, T., Nikaido, T., Onoue, T., Takaya, Y., Sato, K., Kimura, J.-I., Chang, Q., Yamashita, D., Sato, H., Suzuki, K., Kato, Y., & Matsuoka, A. (2019). Triassic marine Os isotope record from a pelagic chert succession, Sakahogi section, Mino Belt, southwest Japan. Journal of Asian Earth Sciences: X, 1.



Mimura, K., Nakamura, K., Yasukawa, K., Machida, S., Ohta, J., Fujinaga, K., & Kato, Y. (2019). Significant impacts of pelagic clay on average chemical composition of subducting sediments: New insights from discovery of extremely rare-earth elements and yttrium-rich mud at Ocean Drilling Program Site 1149 in the western North Pacific Ocean. Journal of Asian Earth Sciences, 186, 104059. 



Takaya, Y., Wang, M., Fujinaga, K., Uchida, E., Nozaki, T., & Kato, Y. (2019). Experiments on rare‐earth element extractions from umber ores for optimizing the grinding process. Minerals, 9(4), 239.




2018


Takaya, Y., Nakamura, K., & Kato, Y. (2018). Long-Term Reaction Characteristics of CO2–Water–Rock Interaction: Insight into the Potential Groundwater Contamination Risk from Underground CO2 Storage. Resource Geology, 68(1), 93–100



Aoki, S., Kabashima, C., Kato, Y., Hirata, T., & Komiya, T. (2018). Influence of contamination on banded iron formations in the Isua supracrustal belt, West Greenland: Reevaluation of the Eoarchean seawater compositions. Geoscience Frontiers, 9(4), 1049–1072



Sato, Y., Hirano, N., Machida, S., Yamamoto, J., Nakanishi, M., Ishii, T., Taki, A., Yasukawa, K., & Kato, Y. (2018). Direct ascent to the surface of asthenospheric magma in a region of convex lithospheric flexure. International Geology Review, 60(10), 1231–1243



Kashiwabara, T., Toda, R., Nakamura, K., Yasukawa, K., Fujinaga, K., Kubo, S., Nozaki, T., Takahashi, Y., Suzuki, K., & Kato, Y. (2018). Synchrotron X-ray spectroscopic perspective on the formation mechanism of REY-rich muds in the Pacific Ocean. Geochimica et Cosmochimica Acta, 240, 274–292.



Yasukawa, K., Ohta, J., Mimura, K., Tanaka, E., Takaya, Y., Usui, Y., Fujinaga, K., Machida, S., Nozaki, T., Iijima, K., Nakamura, K., & Kato, Y. (2018). A new and prospective resource for scandium: Evidence from the geochemistry of deep-sea sediment in the western North Pacific Ocean. Ore Geology Reviews, 102, 260–267.



Ijiri, A., Okamura, K., Ohta, J., Nishio, Y., Hamada, Y., Iijima, K., & Inagaki, F. (2018) Uptake of porewater phosphate by REY-rich mud in the western North Pacific Ocean. Geochemical Journal, 52(4), 373-378.



Takaya, Y., Yasukawa, K., Kawasaki, T., Fujinaga, K., Ohta, J., Usui, Y., Nakamura, K., Kimura, J.-I., Chang, Q., Hamada, M., Fujita, T., & Kato, Y. (2018). The tremendous potential of deep-sea mud as a source of rare-earth elements. Scientific Reports, 8, 5763. ** Scientific Reports "Journal Top 100" **



Azami, K., Hirano, N., Machida, S., Yasukawa, K., & Kato, Y. (2018). Rare earth elements and yttrium (REY) variability with water depth in hydrogenetic ferromanganese crusts. Chemical Geology, 493, 224–233.





2017


Miyazaki, J., Kawagucci, S., Makabe, A., Takahashi, A., Kitada, K., Torimoto, J., Matsui, Y., Tasumi, E., Shibuya, T., Nakamura, K., Kumagai, H., & Chen, C. (2017). Deepest and hottest hydrothermal activity in the Okinawa trough: The Yokosuka site at Yaeyama Knoll. Royal Society Open Science, 4(12).



Yasukawa, K., Nakamura, K., Fujinaga, K., Ikehara, M., & Kato, Y. (2017). Earth system feedback statistically extracted from the Indian Ocean deep-sea sediments recording Eocene hyperthermals. Scientific Reports, 7, 11304.



Nozaki, T., Takaya, Y., Toyofuku, T., Tokumaru, A., Goto, K. T., Chang, Q., Kimura, J.-I., Kato, Y., Suzuki, K., Augustin, A. H., Augustin, A. H., & Kitazato, H. (2017). Depositional Age of a Fossil Whale Bone from São Paulo Ridge, South Atlantic Ocean, Based on Os Isotope Stratigraphy of a Ferromanganese Crust. Resource Geology, 67(4), 442–450.



Haraguchi, S., Kimura, J.-I., Senda, R., Fujinaga, K., Nakamura, K., Takaya, Y., & Ishii, T. (2017). Origin of felsic volcanism in the Izu arc intra-arc rift. Contributions to Mineralogy and Petrology, 172(5), 25.





2016


Fujii, M., Okino, K., Sato, H., Nakamura, K., Sato, T., & Yamazaki, T. (2016). Variation in magnetic properties of serpentinized peridotites exposed on the Yokoniwa Rise, Central Indian Ridge: Insights into the role of magnetite in serpentinization. Geochemistry, Geophysics, Geosystems, 17(12), 5024–5035.



Nozaki, T., Tokumaru, A., Takaya, Y., Kato, Y., Suzuki, K., & Urabe, T. (2016). Major and trace element compositions and resource potential of ferromanganese crust at Takuyo Daigo Seamount, northwestern Pacific Ocean. Geochemical Journal, 50(6), 527–537



Nakamura, K., Machida, S., Okino, K., Masaki, Y., Iijima, K., Suzuki, K., & Kato, Y. (2016). Acoustic characterization of pelagic sediments using sub-bottom profiler data: Implications for the distribution of REY-rich mud in the Minamitorishima EEZ, western Pacific. Geochemical Journal, 50(6), 605–619



Machida, S., Fujinaga, K., Ishii, T., Nakamura, K., Hirano, N., & Kato, Y. (2016). Geology and geochemistry of ferromanganese nodules in the Japanese Exclusive Economic Zone around Minamitorishima Island. Geochemical Journal, 50(6), 539–555



Iijima, K., Yasukawa, K., Fujinaga, K., Nakamura, K., Machida, S., Takaya, Y., Ohta, J., Haraguchi, S., Nishio, Y., Usui, Y., Suzuki, K., & Kato, Y. (2016). Discovery of extremely REY-rich mud in the western North Pacific Ocean. Geochemical Journal, 50(6), 557–573. 



Fujinaga, K., Yasukawa, K., Nakamura, K., Machida, S., Takaya, Y., Ohta, J., Araki, S., Liu, H., Usami, R., Maki, R., Suzuki, K., & Kato, Y. (2016). Geochemistry of REY-rich mud in the Japanese Exclusive Economic Zone around Minamitorishima Island. Geochemical Journal, 50(6), 575–590



Ohta, J., Yasukawa, K., Machida, S., Fujinaga, K., Nakamura, K., Takaya, Y., Iijima, K., Suzuki, K., & Kato, Y. (2016). Geological factors responsible for REY-rich mud in the western North Pacific Ocean: Implications from mineralogy and grain size distributions. Geochemical Journal, 50(6), 591–603. 



Toki, T., Hamamoto, A., Tawata, M., Miyazaki, J., Nakamura, K., Abe, M., Takai, K., Sano, Y., Takahata, N., Tsunogai, U., Tsunogai, U., & Ishibashi, J.-I. (2016). Methanogens in H2-rich hydrothermal fluids resulting from phase separation in a sediment-starved, basalt-hosted hydrothermal system. Chemical Geology, 447, 208–218.



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