Akira Ueda

2025

Geochemical study of fluid origin and caprock formation with carbonate mineral precipitation in the Okuaizu geothermal area

Mao, D., Zhang, J., Hoshino, Y., Satake, S., Yang, H., Kuramitz, H., Ueda, A. & Terai, A., 2025/03, In: Geothermics. 127, 103242.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

2 被引用数 (Scopus)

Isotope geochemical study of the origin and formation mechanism of carbonate minerals in geothermal wells and surrounding hot spring waters in the western Unzen area

Ueda, A., Yang, H., Hoshino, Y., Satake, S., Mao, D. & Terai, A., 2025/06, In: Applied Geochemistry. 185, 106384.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

2024

A Novel Technique for Monitoring Carbonate and Scale Precipitation Using a Batch-Process-Based Hetero-Core Fiber Optic Sensor

Satake, S., Hosoki, A., Kuramitz, H. & Ueda, A., 2024/12, In: Sensors. 24, 23, 7580.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

1 被引用数 (Scopus)

Evaluation of reflective fiber-optic surface plasmon resonance sensor for monitoring scale deposition

Okazaki, T., Yokose, M., Ishii, Y., Ueda, A., Kuramitz, H. & Watanabe, T., 2024/12, In: Analytical Sciences. 40, 12, p. 2167-2173 7 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

1 被引用数 (Scopus)

Fiber Optic-Based Portable Sensor for Rapid Evaluation and In Situ Real-Time Sensing of Scale Formation in Geothermal Water

Matsuura, T., Okazaki, T., Sazawa, K., Hosoki, A., Ueda, A. & Kuramitz, H., 2024/09, In: Chemosensors. 12, 9, 171.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

2 被引用数 (Scopus)

Isotope geochemical study of carbonate formation in the 84N-3t well in the Oku-Aizu geothermal area: Natural analog study of fluid origin during caprock formation

Mao, D., Zhang, J., Ueda, A., Hoshino, Y., Oochi, R., Matsumoto, K., Kaneko, H. & Terai, A., 2024/09, In: Geothermics. 122, 103061.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

2 被引用数 (Scopus)

Rapid Monitoring of Scale Precipitation and Inhibition in Geothermal Fluid Using Optical Fiber Sensor Based on Surface Plasmon Resonance

Hosoki, A., Sugiura, K., Okazaki, T., Yang, H., Kuramitz, H., Ueda, A. & Terai, A., 2024/09, In: Fibers. 12, 9, 74.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

1 被引用数 (Scopus)

Real-Time Monitoring of CaCO₃ Precipitation Using Fiber Optics Scale Sensor Under High Temperature and Pressure Conditions

Satake, S., Hosoki, A., Okazaki, T., Ueda, A., Kuramitz, H. & Terai, A., 2024, 2024 IEEE Sensors, SENSORS 2024 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., (Proceedings of IEEE Sensors).

研究成果: 書籍の章/レポート/会議録 › 会議への寄与 › 査読

2022

Air nanobubbles retard calcite crystal growth

Tagomori, K., Kioka, A., Nakagawa, M., Ueda, A., Sato, K., Yonezu, K. & Anzai, S., 2022/09/05, In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 648, 129319.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

14 被引用数 (Scopus)

Isotope and chemical studies of groundwater in the Kurobe River alluvial fan, Toyama, Japan, for the efficient utilization of groundwater heat

Iwatake, K., Hirata, H., Oda, A., Okakita, N. & Ueda, A., 2022/05, In: Groundwater for Sustainable Development. 17, 100756.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

2 被引用数 (Scopus)

Precipitation behavior of iron and silicic acid when mixing acidic and weakly alkaline geothermal waters at the Hatchobaru geothermal power plant, Oita, Japan

Juhri, S., Yonezu, K., Inoue, H., Kiyota, Y., Ohshima, S., Uemura, H., Uchiyama, N., Ueda, A. & Yokoyama, T., 2022/09, In: Geothermics. 104, 102470.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

6 被引用数 (Scopus)

Recovery of silica from saline geothermal brine at the Yamagawa Power Plant for inhibition of scale formation by batch- and circulation-tests using cationic flocculant and quicklime

Ueda, A., Ozawa, A., Unami, S., Kusakabe, M., Hirayama, N., Mogi, K., Ikeda, M., Yokoyama, T. & Yonezu, K., 2022/02, In: Geothermics. 99, 102312.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

1 被引用数 (Scopus)

2021

Chemical and isotopic (H, O, S, and Sr) analyses of groundwaters in a non-volcanic region, Okayama prefecture, Japan: Implications for geothermal exploration

Komatsu, S., Okano, O. & Ueda, A., 2021/03, In: Geothermics. 91, 102005.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

14 被引用数 (Scopus)

Flow characteristics of artesian groundwater in coastal area of Kurobe River basin, Toyama Prefecture, by long-term and spatial observation of water temperature and electric conductivity

Matsuura, T., Tebakari, T., Oda, A. & Ueda, A., 2021/05, In: Groundwater for Sustainable Development. 13, 100555.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

4 被引用数 (Scopus)

Geochemical evaluation of geothermal resources in Toyama Prefecture, Japan, based on the chemical and isotopic characteristics of hot spring waters

Sasaki, K., Morita, J., Iwaki, C. & Ueda, A., 2021/06, In: Geothermics. 93, 102071.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

21 被引用数 (Scopus)

Geochemical study and fluid flow simulation of a groundwater system in Toyama and Joganji alluvial fans, central Japan, and assessment of suitability for heat utilization

Hirata, H., Yoo, S. Y., Iwatake, K., Tebakari, T., Okakita, N., Zhang, J. & Ueda, A., 2021/06, In: Geothermics. 93, 102073.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

3 被引用数 (Scopus)

Geochemical study for utilization of groundwater heat by open heat pump system in northern Okayama and Akaiwa city areas with low precipitation in Japan

Okano, O., Konishi, A., Kita, A. & Ueda, A., 2021/02, In: Groundwater for Sustainable Development. 12, 100494.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

9 被引用数 (Scopus)

Scale sensor: Rapid monitoring of scale deposition and inhibition using fiber optics in a geothermal system and comparison with other monitoring devices

Okazaki, T., Kuramitz, H., Watanabe, T. & Ueda, A., 2021/06, In: Geothermics. 93, 102069.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

10 被引用数 (Scopus)

Sr isotope geochemical study of geothermal water and rocks from a newly drilled well for geothermal power generation and hot spring waters in the Okuhida Hot Spring, Gifu, Japan

Isaji, R., Okano, O., Ohtani, T., Takagi, E., Sugihara, Y. & Ueda, A., 2021/03, In: Geothermics. 91, 102018.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

8 被引用数 (Scopus)

Tamagawa hyper-acidic hot spring and phreatic eruptions at Mt. Akita-Yakeyama: Part 1. The isotopic and chemical characteristics of the hot spring water

Furukawa, T. & Ueda, A., 2021/04, In: Journal of Volcanology and Geothermal Research. 412, 107179.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

4 被引用数 (Scopus)

Tamagawa hyper-acidic hot spring and phreatic eruptions at Mt. Akita-Yakeyama Volcano: Part 2. Secular variations of SO₄/Cl ratios and their relationship to the phreatic eruptions

Ueda, A., Tanaka, T., Kusakabe, M. & Furukawa, T., 2021/06, In: Journal of Volcanology and Geothermal Research. 414, 107242.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

5 被引用数 (Scopus)

2020

Geochemical and isotopic imprints of groundwater evolution in mountainous areas of Maniwa City, Okayama Prefecture, Japan

Konishi, A., Fujiike, T., Okano, O., Chiba, H. & Ueda, A., 2020/10, In: Groundwater for Sustainable Development. 11, 100412.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

6 被引用数 (Scopus)

U-Shaped Polymer Cladding and Hetero-Core Fiber Optic Sensors for Monitoring Scale Formation in Geothermal Brine

Okazaki, T., Seto, R., Watanabe, T., Ueda, A. & Kuramitz, H., 2020/09/01, In: Analytical Letters. 53, 13, p. 2160-2169 10 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

13 被引用数 (Scopus)

2019

Contribution of precipitation to groundwater flow systems in three major alluvial fans in Toyama Prefecture, Japan: stable-isotope characterization and application to the use of groundwater for urban heat exchangers

寄稿の翻訳タイトル: 富山県 (日本)内の3扇状地の地下水系への天水の寄与:安定同位体組成の特徴と都市型熱交換への地下水利用: stable-isotope characterization and application to the use of groundwater for urban heat exchangersOkakita, N., Iwatake, K., Hirata, H. & Ueda, A., 2019/02/13, In: Hydrogeology Journal. 27, 1, p. 345-362 18 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

17 被引用数 (Scopus)

Environmental modifications of Lake Nyos surface water by artificial degassing

Anazawa, K., Fantong, W. Y., Ueda, A., Ozawa, A., Kusakabe, M., Yoshida, Y. & Ohba, T., 2019/04, In: Journal of African Earth Sciences. 152, p. 115-121 7 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

4 被引用数 (Scopus)

In situ observations of silica nanoparticle growth in geothermal brine at the Sumikawa geothermal station, Japan, by dynamic light scattering

Tamura, R., Inoue, H., Hanajima, E., Ikeda, R., Osaka, Y., Yanaze, T., Kusakabe, M., Yonezu, K., Yokoyama, T., Tsukamoto, K., Marumo, K. & Ueda, A., 2019/01, In: Geothermics. 77, p. 304-312 9 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

9 被引用数 (Scopus)

Investigation of the effects of electromagnetic field treatment of hot spring water for scale inhibition using a fibre optic sensor

Okazaki, T., Umeki, S., Orii, T., Ikeya, R., Sakaguchi, A., Yamamoto, T., Watanabe, T., Ueda, A. & Kuramitz, H., 2019/12/01, In: Scientific Reports. 9, 1, 10719.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

11 被引用数 (Scopus)

Major ions, δ¹⁸O, δ¹³C and ⁸⁷Sr/⁸⁶Sr compositions of water and precipitates from springs along the Cameroon volcanic line (Cameroon, west Africa): Implications for provenance and volcanic hazards

Fantong, W. Y., Kamtchueng, B. T., Ishizaki, Y., Fru, E. C., Fantong, E. B., Wirmvem, M. J., Aka, F. T., Nlend, B., Harman, D., Ueda, A., Kusakabe, M., Tanyileke, G. & Ohba, T., 2019/02, In: Journal of African Earth Sciences. 150, p. 12-22 11 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

7 被引用数 (Scopus)

Observation of silica nanoparticle growth in saline geothermal brine from the Yamagawa geothermal power station, Japan, using dynamic light scattering

Mori, U., Unami, S., Osaka, Y., Yanaze, T., Yokoyama, T., Tsukamoto, K., Kusakabe, M., Marumo, K. & Ueda, A., 2019/11, In: Geothermics. 82, p. 232-242 11 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

4 被引用数 (Scopus)

Prediction of permeability reduction due to silica scale deposition with a geochemical clogging model at Sumikawa Geothermal Power Plant

Yanaze, T., Yoo, S. Y., Marumo, K. & Ueda, A., 2019/05, In: Geothermics. 79, p. 114-128 15 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

24 被引用数 (Scopus)

2017

A Reusable Fiber Optic Sensor for the Real-Time Sensing of CaCO₃ Scale Formation in Geothermal Water

Okazaki, T., Orii, T., Ueda, A. & Kuramitz, H., 2017/03/01, In: IEEE Sensors Journal. 17, 5, p. 1207-1208 2 p., 7782782.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

11 被引用数 (Scopus)

Experimental field investigations of inhibitors for controlling silica scale in geothermal brine at the Sumikawa geothermal plant, Akita Prefecture, Japan

Ikeda, R. & Ueda, A., 2017/11, In: Geothermics. 70, p. 305-313 9 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

31 被引用数 (Scopus)

Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water

Okazaki, T., Orii, T., Ueda, A., Ozawa, A. & Kuramitz, H., 2017/12/01, In: Scientific Reports. 7, 1, 3387.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

27 被引用数 (Scopus)

Fiber Optic Sensor with an Optically Transparent Electrode for Monitoring CaCO₃ Scale Formation in Geothermal Water

Okazaki, T., Yamamoto, T., Taguchi, A., Ueda, A. & Kuramitz, H., 2017/10, In: IEEE Sensors Letters. 1, 5, 8010410.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

9 被引用数 (Scopus)

Recovery of oversaturated silica from Takigami and Sumikawa geothermal brines with cationic polymer flocculants to prevent silica scale deposition

Hanajima, E. & Ueda, A., 2017/11, In: Geothermics. 70, p. 271-280 10 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

21 被引用数 (Scopus)

2016

Vertical distribution of bacteria and archaea in a CO₂-rich meromictic lake: A case study of Lake Monoun

Tiodjio, R. E., Sakatoku, A., Issa, Fantong, W. Y., Tchakam, K. B., Tanyileke, G., Hell, V. J., Ohba, T., Kusakabe, M., Tanaka, D., Nakamura, S. & Ueda, A., 2016/09/01, In: Limnologica. 60, p. 6-19 14 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

4 被引用数 (Scopus)

2015

A multi-tracer approach for assessing the origin, apparent age and recharge mechanism of shallow groundwater in the Lake Nyos catchment, Northwest, Cameroon

Kamtchueng, B. T., Fantong, W. Y., Wirmvem, M. J., Tiodjio, R. E., Fouépé Takounjou, A., Asai, K., Bopda Djomou, S. L., Kusakabe, M., Ohba, T., Tanyileke, G., Hell, J. V. & Ueda, A., 2015/04/01, In: Journal of Hydrology. 523, p. 790-803 14 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

38 被引用数 (Scopus)

Characteristics of chemical weathering and water-rock interaction in Lake Nyos dam (Cameroon): Implications for vulnerability to failure and re-enforcement

Fantong, W. Y., Kamtchueng, B. T., Yamaguchi, K., Ueda, A., Issa, Ntchantcho, R., Wirmvem, M. J., Kusakabe, M., Ohba, T., Zhang, J., Aka, F. T., Tanyileke, G. & Hell, J. V., 2015/01/01, In: Journal of African Earth Sciences. 101, p. 42-55 14 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

24 被引用数 (Scopus)

Flow and geochemical modeling of drainage from Tomitaka mine, Miyazaki, Japan

Yamaguchi, K., Tomiyama, S., Metugi, H., Ii, H. & Ueda, A., 2015/10/01, In: Journal of Environmental Sciences (China). 36, p. 130-143 14 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

12 被引用数 (Scopus)

Fundamental study on the development of fiber optic sensor for real-time sensing of C _a CO ₃ scale formation in geothermal water

Okazaki, T., Imai, K., Tan, S. Y., Yong, Y. T., Rahman, F. A., Hata, N., Taguchi, S., Ueda, A. & Kuramitz, H., 2015, In: Analytical Sciences. 31, 3, p. 177-183 7 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

23 被引用数 (Scopus)

Geotechnical, chemical and mineralogical evaluation of lateritic soils in humid tropical area (Mfou, Central-Cameroon): Implications for road construction

Kamtchueng, B. T., Onana, V. L., Fantong, W. Y., Ueda, A., Ntouala, R. F., Wongolo, M. H., Ndongo, G. B., Ze, A. N., Kamgang, V. K. & Ondoa, J. M., 2015/12/01, In: International Journal of Geo-Engineering. 6, 1, 1.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

57 被引用数 (Scopus)

Isotopic and chemical studies of hot and cold springs in western part of Khangai Mountain region, Mongolia, for geothermal exploration

Oyuntsetseg, D., Ganchimeg, D., Minjigmaa, A., Ueda, A. & Kusakabe, M., 2015/01/01, In: Geothermics. 53, p. 488-497 10 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

20 被引用数 (Scopus)

Melt extraction and metasomatism recorded in basal peridotites above the metamorphic sole of the northern Fizh massif, Oman ophiolite

Yoshikawa, M., Python, M., Tamura, A., Arai, S., Takazawa, E., Shibata, T., Ueda, A. & Sato, T., 2015/05/26, In: Tectonophysics. 650, p. 53-64 12 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

25 被引用数 (Scopus)

2013

A geochemical clogging model with carbonate precipitation rates under hydrothermal conditions

Yoo, S. Y., Kuroda, Y., Mito, Y., Matsuoka, T., Nakagawa, M., Ozawa, A., Sugiyama, K. & Ueda, A., 2013/03, In: Applied Geochemistry. 30, p. 67-74 8 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

11 被引用数 (Scopus)

Dynamic and topographic observation of calcite dissolution using enhanced in-situ phase-shift interferometry

Ueta, S., Satoh, H., Nishimura, Y., Ueda, A. & Tsukamoto, K., 2013, In: Journal of Crystal Growth. 363, p. 294-299 6 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

17 被引用数 (Scopus)

Experimental studies of injectivity reduction due to carbonate mineralization

Yoo, S. Y., Ueda, A. & Toshifumi, M., 2013/04, In: Greenhouse Gases: Science and Technology. 3, 2, p. 148-157 10 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

3 被引用数 (Scopus)

Geochemical, stable isotope, and numerical modeling studies of sake and groundwater for identification of the location of sake production: A case study from Hakusan City, Japan

Tomiyama, S., Kitai, A., Hashiguchi, T., Izu, H., Sudo, S. & Ueda, A., 2013, In: Geochemical Journal. 47, 6, p. 591-608 18 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

6 被引用数 (Scopus)

2009

Experimental research of plagioclase (rock)-gas-water interaction at hydrothermal conditions for CO₂ mineralization

Kuroda, Y., Yamada, Y., Ueda, A., Matsuoka, T. & Yamada, N., 2009, In: Japanese Magazine of Mineralogical and Petrological Sciences. 38, 4, p. 111-121 11 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

5 被引用数 (Scopus)

Magmatic fluid input to the Kuju-Iwoyama hydrothermal system prior to the 1995 eruption of the Kuju volcano (Kyushu, Japan)

Kita, I., Kai, T., Itoi, R., Ishida, M. & Ueda, A., 2009/09, In: Geothermics. 38, 3, p. 294-302 9 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

3 被引用数 (Scopus)

2007

Borehole water and hydrologic model around the Nojima fault, SW Japan

Fujimoto, K., Ueda, A., Ohtani, T., Takahashi, M., Ito, H., Tanaka, H. & Boullier, A. M., 2007/10/15, In: Tectonophysics. 443, 3-4, p. 174-182 9 p.

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

Open Access

19 被引用数 (Scopus)

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上田晃