Spatio and temporal dynamics of groundwater residence time revealed by multi-tracer and numerical model in headwater catchment

• Project/Area Number: 16H03111
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geography
• Research Institution: University of Tsukuba
• Principal Investigator: TSUJIMURA Maki 筑波大学, 生命環境系, 教授 (10273301)
• Co-Investigator(Kenkyū-buntansha): 恩田 裕一 筑波大学, 生命環境系, 教授 (00221862) ; 勝山 正則 京都府立大学, 生命環境科学研究科, 教授 (40425426)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000); Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2016: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
• Keywords: マルチ・トレーサー / フロン / 六フッ化硫黄 / 滞留時間 / 地下水 / 湧水 / 微生物 / 全菌数 / 水資源量 / トレーサー

Outline of Final Research Achievements

The spring and groundwater with longer residence time tend to show larger storage volume in the headwaters. Additionally, the density of prokaryotes in the spring and groundwater with longer residence time shows lower number. This suggests that the spring water and groundwater with longer residence time seem to be safe and stable in quantity and quality.

Academic Significance and Societal Importance of the Research Achievements

湧水・地下水の滞留時間および微生物情報は、持続可能な地下水資源の保全と利用の観点からも重要である。滞留時間の数10年以上の湧水・地下水は、背後にある地下水貯留量は多く流量も安定しており、硝酸性窒素が検出されず、かつ含まれる微生物も相対的に少ないことが示された。すなわち、数10年以上の比較的長い滞留時間の湧水・地下水は、量および質的に安全安心な水資源であるということができ、水の滞留時間・微生物情報が、水の安全性を示す指標として利用可能であることが示唆されたという面で、本研究成果は学術的のみならず社会的意義があると思量される。

Research Products

• [Int'l Joint Research] GNS Sciences(ニュージーランド)
• [Int'l Joint Research] GNS Science(ニュージーランド)
• [Journal Article] Characteristics of Microbial Distribution in Deep Groundwater in Horonobe Coastal Area, Hokkaido (2019)
  • Author(s): 杉山 歩, 井原 哲夫, 辻村 真貴, 永翁 一代, 加藤 憲二, 丸井 敦尚
  • Journal Title: JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES Volume: 32 Issue: 5 Pages: 245-254
  • DOI: 10.3178/jjshwr.32.245
  • NAID: 130007724520
  • ISSN: 0915-1389, 1349-2853
  • Year and Date: 2019-09-05
  • Peer Reviewed / Open Access
• [Journal Article] Stable isotope characteristics of water resources in the coastal area of the Vietnamese Mekong Delta (2019)
  • Author(s): Tran, D,A., Tsujimura, M., Vo, L. P., Nguyen, V. T., Nguyen, L. D., Dang, T. D.
  • Journal Title: Isotopes in Environmental and Health Studies Volume: 55 Issue: 6 Pages: 566-587
  • DOI: 10.1080/10256016.2019.1673746
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Mean residence times and sources of Christchurch springs (2019)
  • Author(s): Stewart, M. K., Morgenstern, U., Tsujimura, M., Gusyev, M.A., Sakakibara, K., Imaizumi, Y., Rutter, H., Raaij, R., Etheridge, Z., Scott, L. and Cox. S. C.
  • Journal Title: Journal of Hydrology (New Zealand) Volume: 57 Pages: 81-94
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effectivity of dissolved SF6 tracer for clarification of rainfall and runoff processes in a forested headwater catchment (2019)
  • Author(s): Sakakibara K, Tsujimura M, Iwagami S, Sato Y, Nagano K, Onda Y
  • Journal Title: Hydrological Processes Volume: 33 Issue: 6 Pages: 892-904
  • DOI: 10.1002/hyp.13398
  • Peer Reviewed
• [Journal Article] Mean residence times and sources of Christchurch springs (2019)
  • Author(s): Michael K. Stewart, Uwe Morgenstern, Maki Tsujimura., Maksym A. Gusyev, Koichi Sakakibara, Yuki Imaizumi, Helen Rutter, Rob van der Raaij, Zeb Etheridge, Lisa Scott, Simon C. Cox
  • Journal Title: Journal of Hydrology New Zealand Volume: 印刷中
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 日本の都市域周辺における大気SF6濃度の分布－SF6地下水年代への影響－ (2017)
  • Author(s): 浅井和由・辻村真貴・茂木勝郎
  • Journal Title: 地下水学会誌 Volume: 59 Pages: 345-354
  • Peer Reviewed / Open Access
• [Journal Article] 六フッ化硫黄 (SF6) を用いた地下水の滞留時間推定における課題と展望 (2017)
  • Author(s): 榊原厚一・辻村真貴・浅井和由
  • Journal Title: 地下水学会誌 Volume: 印刷中
  • NAID: 130006883006
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Spatiotemporal variation of the surface water effect on the groundwater recharge in a low-precipitation region: Application of the multi-tracer approach to the Taihang Mountains, North China (2017)
  • Author(s): Sakakibara, K., Tsujimura, M., Song, X., Zhang, J.
  • Journal Title: Journal of Hydrology Volume: 545 Pages: 132-144
  • DOI: 10.1016/j.jhydrol.2016.12.030
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Tracers approach for evaluating groundwater recharge by surface water in semi-arid regions (2016)
  • Author(s): Tsujimura, M.
  • Organizer: Expert Meeting on “Water Harvesting and Groundwater Recharge”
  • Place of Presentation: Khartoum, Sudan(長崎県・長崎市）
  • Year and Date: 2016-12-10
  • Int'l Joint Research / Invited
• [Presentation] 六フッ化硫黄を用いた山地源流域の降雨流出時における湧水の滞留時間変動と流出プロセス (2016)
  • Author(s): 榊原厚一 ・ 辻村真貴 ・ 恩田裕一・岩上 翔・佐藤雄太郎・長野倖介
  • Organizer: 日本地下水学会
  • Place of Presentation: 長崎新聞文化ホール(長崎県・長崎市）
  • Year and Date: 2016-10-20
• [Presentation] 地下水流動系研究における微生物トレーサー適用の可能性 (2016)
  • Author(s): 辻村真貴・山本千里・加藤憲二・永翁一代
  • Organizer: 日本地下水学会
  • Place of Presentation: 長崎新聞文化ホール(長崎県・長崎市）
  • Year and Date: 2016-10-20
• [Remarks] 辻村真貴 (Maki Tsujimura)
  • URL: http://www.envr.tsukuba.ac.jp/~mktsuji/index.htm