Research Achievements - Original paper -

Estimation of submarine and terrestrial spring residence times on Rishiri Island using multi-transient tracers ( ³H, CFCs, and SF₆)

ASAI Kazuyoshi, ASAI Kazumi, MOGI Katsuro, HAYASHI Takeshi, TSUJIMURA Maki, JING Zhang

Journal of Groundwater Hydrology ( Japanese Association of Groundwater Hydrology )  66 ( 3 ) 207 - 225   2024.08  [Refereed]

Research paper (journal)   Domestic Co-author

<p>Rishiri Island, known for having one of the largest submarine springs in Japan, is a volcanic island located in Hokkaido. We applied multi-transient tracers (³H, CFCs, and SF₆) to estimate the residence times of the submarine and terrestrial springs on Rishiri Island. All of the springs contained ³H higher than natural ³H level, indicating that the groundwater on Rishiri Island was primarily recharged during post-bomb periods. CFCs and SF₆ concentrations were relatively high in the terrestrial springs and north-eastern submarine spring, and low in the south-western submarine spring. Tracer plots between the ³H, CFCs, and SF₆ suggested that the flow pattern of the groundwater on Rishiri Island can be approximated via two flow models: an exponential mixing model (EMM) and a piston flow model (PFM). The terrestrial springs and the north-east submarine spring are formed via a mixture of groundwater with different recharge ages, and the average transit time based on the EMM was approximately 10 to 45 years. The large-scale submarine spring in the south-west may be formed via piston-like groundwater flow at the bottom of a buried valley, and its transit time is estimated to be 40 years. The residence time of spring water was positively correlated with recharge elevation, suggesting that the scale of the groundwater flow system is larger for submarine springs than for terrestrial springs.</p>

DOI CiNii Research

Enrichment of halotolerant hydrogen-oxidizing bacteria and production of high-value-added chemical hydroxyectoine using a hybrid biological–inorganic system

Xiang Feng, Daichi Kazama, Sijia He, Hideki Nakayama, Takeshi Hayashi, Tomochika Tokunaga, Kozo Sato, Hajime Kobayashi

Frontiers in Microbiology ( Frontiers Media SA )  14   1 - 11   2023.08  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Understanding the Groundwater Flow System at the Northern Part of Mt. Fuji: Current Issues and Prospects

HAYASHI Takeshi

Journal of Geography (Chigaku Zasshi) ( Tokyo Geographical Society )  129 ( 5 ) 677 - 695   2020.10  [Refereed]

Research paper (journal)   Single author

<p> Mt. Fuji, the highest stratovolcano in Japan, has been considered to be a huge water reservoir. Various studies on the water environment of Mt. Fuji have been carried out to understand its scientific characteristics, and for water resource development. However, the mechanism of the water cycle, especially the groundwater flow system in this area, has still not been clarified. The hydrogeological settings and the groundwater flow at the northern part of Mt. Fuji are discussed based on the results of previous studies. Moreover, current issues and prospects are pointed out to further understand the hydrology of this area. Considering the hydraulic conductivities of the layers (e.g. volcanic sand and gravel, lava, volcanic mudflow) of the Shin-Fuji (Younger Fuji) stage and the Ko-Fuji (Older Fuji) stage, it is possible for groundwater to flow in the layers of both stages. At the northwestern foot of Mt. Fuji, three lakes (Lakes Sai, Shoji, Motosu) are mainly recharged not by Mt. Fuji but by the surrounding mountain area. Groundwater at the northwestern foot of Mt. Fuji is considered to be recharged by both water recharged in the northwestern flank of Mt. Fuji and water seepages from these lakes, and to flow toward the western-southwestern foot of Mt. Fuji. To further understand the water cycle in Mt. Fuji, it is essential to comprehensively discuss the results of various studies such as those on the geology, volcanology, geophysics, geochemistry, climatology, and hydrology of Mt. Fuji based on the viewpoints of hydrology and hydrogeology.</p>

DOI CiNii Research

Microbial methane production and oxidation in the Holocene mud beneath the Kanto Plain of central Japan

Hideyoshi Yoshioka, Mio Takeuchi, Susumu Sakata, Hiroshi A. Takahashi, Manabu Takahashi, Susumu Tanabe, Takeshi Hayashi, Akihiko Inamura, Masaya Yasuhara

Geochemical Journal ( The Geochemical Society of Japan )  54 ( 4 ) 243 - 254   2020.08  [Refereed]

Research paper (journal)   Domestic Co-author

<p>To better understand the activities of subsurface microbes producing and oxidizing methane in terrestrial regions and the hydrological factors controlling the activities, we conducted geochemical and microbiological studies on the Holocene mud beneath the Kanto Plain. The ¹³C- and ¹⁴C-tracer experiments indicates that the methane oxidation activity far exceeded the methane production activity in the sediments, which is consistent with the predominance of anaerobic methane-oxidizing archaea (ANME)-1 in the archaeal population. Depth profiles of sulfate and sulfide ions in the pore water and the hydrogen and oxygen isotopic compositions of the pore water in the sediments indicates that surface meteoric water had recently infiltrated into the muddy sediments and a reduction of the sulfate derived from the meteoric water had occurred in the upper part of the sediments. Meanwhile, the molar ratios of methane to ethane plus propane and the carbon isotopic compositions of methane showed that methane in the Holocene mud was microbial in origin. Because the methane was dissolved in the low-salinity pore water, which had almost completely replaced the original paleo-seawater, the methane production activity would have occurred after the replacement. The pore water in the lower part of the sediments with low hydrogen isotopic compositions may have been derived from waters recharged under colder climate, such as the Last Glacial Maximum. The small size of the pores in the muddy sediments restricts the flow and migration of microbes. The carbon isotopic relationship between archaeal lipids and dissolved carbon dioxide fits the isotopic fractionation associated with carbon fixation and lipid biosynthesis by methane-producing archaea rather than that by methane-oxidizing archaea, which suggests that the dominant ANME-1 may have produced the dissolved methane under a low sulfate condition before the infiltration of meteoric water into the sediments.</p>

DOI CiNii Research

Evaluating anthropogenic and environmental tritium effects using precipitation and Hokkaido snowpack at selected coastal locations in Asia

M.A.Gusyev, U.Morgenstern, T.Nishihara, T.Hayashi, N.Akata, K.Ichiyanagi, A.Sugimoto, A.Hasegawa, M.K.Stewart

Science of The Total Environment ( Science of the Total Environment )  659 ( 1 ) 1307 - 1321   2019.04  [Refereed]

Research paper (journal)   International Co-author

DOI

Changes of Groundwater Development and Subsurface Environment in the Tokyo Metropolitan Area

Takeshi Hayashi, Akinobu Miyakoshi

応用地質 = Journal of the Japan Society of Engineering Geology ( 日本応用地質学会 )  59 ( 5 ) 311 - 318   2018.12  [Invited]

Research paper (journal)   Domestic Co-author

Evaluation of subsurface warming recognized in long-term observation of subsurface temperature in southeastern Saitama Prefecture, Japan

MIYAKOSHI Akinobu, HAYASHI Takeshi, HAMAMOTO Hideki, HACHINOHE Shoichi

Journal of Groundwater Hydrology ( Japanese Association of Groundwater Hydrology )  60 ( 4 ) 495 - 510   2018.11  [Refereed]

Research paper (journal)   Domestic Co-author

<p>Repeated measurements of subsurface temperature-depth profiles have been conducted eight times between May 2000 and December 2015 at the Kawaguchi groundwater observation wells in southeastern Saitama Prefecture, Japan to evaluate distribution and causes of subsurface warming in an urban area. Additionally, monitoring has been conducted since April 2007 to observe long-term changes in subsurface temperature. Subsurface warming was observed at depths shallower than 40m. Subsurface warming decreased with depth, and at depths of 20m, 30m and 40m had rates of 3.4×10^-2 ^oC/year, 2.30×10^-2 ^oC/year and 1.93×10^-2 ^oC/year, respectively. Results of comparison between calculated temperatures and observed temperatures indicate that surface warming estimated by secular changes in air temperature, starting in 1983, has led to subsurface warming that has been observed after 2003.</p>

DOI CiNii Research

Holocene estuarine sediments as a source of arsenic in Pleistocene groundwater in suburbs of Hanoi, Vietnam

Keisuke Kuroda, Takeshi Hayashi, Ayako Funabiki, An Thuan Do, Vu Duc Canh, Tran Thi Viet Nga, Satoshi Takizawa

Hydrogeology Journal ( Hydrogeology Journal )  25 ( 4 ) 1137 - 1152   2017.01  [Refereed]

Research paper (journal)   International Co-author

DOI

Groundwater recharge in suburban areas of Hanoi, Vietnam: effect of decreasing surface-water bodies and land-use change

Keisuke Kuroda, Takeshi Hayashi, An Thuan Do, Vu Duc Canh, Tran Thi Viet Nga, Ayako Funabiki, Satoshi Takizawa

Hydrogeology Journal ( Hydrogeology Journal )  25 ( 3 ) 727 - 742   2017.01  [Refereed]

Research paper (journal)   International Co-author

DOI

Subsurface high temperature distribution and change in the northern Kanto Plain

Akinobu Miyakoshi, Takeshi Hayashi, Masaya Yasuhara, Noritoshi Morikawa

  58 ( 1 ) 47 - 62   2016.02  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Pepper mild mottle virus as an indicator and a tracer of fecal pollution in water environments: comparative evaluation with wastewater-tracer pharmaceuticals in Hanoi, Vietnam

Keisuke Kuroda, Norihide Nakada, Seiya Hanamoto, Manami Inaba, Hiroyuki Katayama, An Thuan Do, Tran Thi Viet Nga, Kumiko Oguma, Takeshi Hayashi, and Satoshi Takizawa

Science of the Total Environment   506-507   287 - 298   2015.02  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Influence of pond seepage on groundwater pollution by arsenic in Hanoi, Viet Nam

  69 ( 7 ) III-17 - III-28   2014.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Household Survey of Installation and Treatment Efficiency of Point-of-Use Water Treatment Systems in Hanoi, Vietnam

An Thuan Do, Keisuke Kuroda, Takeshi Hayashi, Tran Thi Viet Nga, Kumiko Oguma and Satoshi Takizawa

Journal of Water Supply: Research and Technology—AQUA   63 ( 2 ) 154 - 161   2013.12  [Refereed]

Research paper (journal)   International Co-author

DOI

Stable isotope geochemistry of pore waters and marine sediments from the New Jersey shelf: Methane formation and fluid origin

van Geldern, R., Hayashi, T., Böttcher, M.E., Mottl, M.J., Barth, J.A.C. and Stadler, S.

Geosphere   9 ( 1 ) 96 - 112   2013.02  [Refereed]

Research paper (journal)   International Co-author

DOI

Fresh-water and salt-water distribution in passive margin sediments: Insights from Integrated Ocean Drilling Program Expedition 313 on the New Jersey Margin

J. Lofi, J. Inwood, J. N. Proust, D. H. Monteverde, D. Loggia, C. Basile, H. Otsuka, T. Hayashi, S. Stadler, M. J. Mottl, A. Fehr, P. A. Pezard

Geosphere   9 ( 4 ) 1009 - 1024   2013.02  [Refereed]

Research paper (journal)   International Co-author

DOI

A Study on Effect of Accuracy of Topographical Information to Flood Risk Assessment in Urban Lowland: Barajima District, Akita City

Rina SATO, Takeshi HAYASHI

JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES   25 ( 1 ) 30 - 36   2012.01  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Importance of Groundwater Flow Evaluation for Deep Underground Developments

  58 ( 4 ) 4 - 7   2010.04  [Invited]

Research paper (journal)   Domestic Co-author

Subsurface thermal environment and groundwater flow around Tokyo Bay, Japan

Vuthy Monyrath, Yasuo Sakura, Akinobu Miyakoshi, Takeshi Hayashi

Environmental Earth Sciences   60 ( 5 ) 923 - 932   2009.10  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Subsurface temperature monitoring to evaluate the activity of a mud volcano: a case study in Matsudai, Niigata

T. HAYASHI, T. TOKUNAGA, K. MOGI

Journal of geography   118 ( 3 ) 533 - 542   2009.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Effects of human activities and urbanization on groundwater environments: An example from the aquifer system of Tokyo and the surrounding area

T. Hayashi, T. Tokunaga, M. Aichi, J. Shimada, M. Taniguchi

Science of The Total Environment   407 ( 9 ) 3165 - 3172   2009.04  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Change of the shallow groundwater environment with urbanization and the risk of soil liquefaction in the Tokyo lowland, Tokyo Metropolitan Area

T. HAYASHI

Journal of Japanese Association of Hydrological Sciences   38 ( 2 ) 81 - 98   2008.12  [Refereed]

Research paper (journal)   Single author

Groundwater environment in the Kanto Plain

T. HAYASHI, M. YASUHARA

The Quaternary research   47 ( 3 ) 203 - 216   2008.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Evaluation of change in subsurface thermal environment due to groundwater flow in the Tokyo lowland, Japan

A. Miyakoshi, T. Hayashi, A. Marui, Y. Sakura, S. Kawashima, M. Kawai

International Journal of Earth Sciences   97 ( 2 ) 401 - 411   2008.04  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Groundwater behavior at coastal zones and its relation to long-term surface environmental changes

Tomochika TOKUNAGA, Takeshi HAYASHI

Japanese journal of multiphase flow   21 ( 2 ) 137 - 144   2007.06  [Invited]

Research paper (journal)   Domestic Co-author

Evaluation of Change in Groundwater Environment by Subsurface Temperature in the Tokyo Lowland, Japan

Akinobu MIYAKOSHI, Takeshi HAYASHI, Atsunao MARUI, Yasuo SAKURA, Shin-ichi KAWASHIMA, Masafumi KAWAI

Journal of the Japan Society of Engineering Geology   47 ( 5 ) 269 - 279   2006.12  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Effects of hydrogeological and climate change on the subsurface thermal regime in the Sendai Plain

Uchida Youhei, Hayashi, Takeshi

Physics of the Earth and Planetary Interiors   152 ( 4 ) 292 - 304   2005.10  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Change of Groundwater Environment and Groundwater Quality in the Central Part of the Kanto Plain

Takeshi HAYASHI

Journal of Japanese Association of Hydrological Sciences   34 ( 4 ) 217 - 226   2004.11  [Refereed]

Research paper (journal)   Single author

DOI

Seawater/freshwater interface and groundwater flow on the coastal area

Atsunao MARUI, Kinichiro KUSUNOSE, Takeshi HAYASHI

Geophysical exploration   57 ( 4 ) 351 - 357   2004.08  [Refereed]

Research paper (journal)   Domestic Co-author

Groundwater flow in the Kanto Plain estimated by distribution of subsurface temperature

Akinobu MIYAKOSHI, Yohei UCHIDA, Yasuo SAKURA, Takeshi HAYASHI

Journal of Japanese Association of Hydrological Sciences   33 ( 3 ) 137 - 148   2003.08  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Groundwater flow system of the Kanto Plain estimated from the chemical composition and stable isotopes

Takeshi HAYASHI, Yohei UCHIDA, Masaya YASUHARA, Atsunao MARUI, Yasuo SAKURA, Akinobu MIYAKOSHI

Journal of Japanese Association of Hydrological Sciences   33 ( 3 ) 125 - 136   2003.08  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Three Dimensional Distribution and Origin of Groundwater with Low Isotopic Ratio of Oxygen and Hydrogen and High Cl Concentration in the Central Part of the Kanto Plains

Takeshi HAYASHI

Journal of Japanese Association of Hydrological Sciences   33 ( 2 ) 53 - 70   2003.05  [Refereed]

Research paper (journal)   Single author

DOI

Hydrological Environment of Abukuma Cave System

Atsunao MARUI, Takeshi HAYASHI, Masashi KIKUCHI, Tadashi YAMAUCHI

Journal of Japanese Association of Hydrological Sciences   33 ( 2 ) 71 - 84   2003.05  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Preconsideration Study about Hydro-Environment in Nansei Islands

Takeshi HAYASHI, Yohei UCHIDA, Takemasa ISHII

Journal of Japanese Association of Hydrological Sciences   33 ( 1 ) 13 - 18   2003.02  [Refereed]

Research paper (journal)   Domestic Co-author

DOI