Banks, E.W., Simmons, C.T., Love, A.J., Shand, P. (2011). Assessing spatial and temporal connectivity
between surface water and groundwater in a regional catchment: Implications for regional scale water
quantity and quality. Journal of Hydrology, 404, 30–49. https://doi.org/10.1016/j.jhydrol.2011.04.017
Böhlke, J.K., Horan, M. (2000). Strontium isotope geochemistry of groundwaters and streams affected by
agriculture, Locust Grove, MD. Applied Geochemistry, 15, 599-609. https://doi.org/10.1016/S08832927(99)00075-X
Calligaris, C., Mezga, K., Slejko, F.F., Urbanc, J., Zini, L. (2018). Groundwater characterization by means
of conservative (δ18O and δ2H) and non-conservative (87Sr/86Sr) isotopic values: The classical karst region
aquifer case (Italy–Slovenia). Geosciencees, 8(9), 321. https://doi.org/10.3390/geosciences8090321
Capo, R.C., Stewart, B.W., Chadwick, O.A. (1998). Strontium isotopes as tracers of ecosystem process:
theory and methods. Geoderma, 82, 197–225. https://doi.org/10.1016/S0016-7061(97)00102-X
Guo, Q., Wang, Y., Liu, W. (2010). O, H, and Sr isotope evidences of mixing processes in two geothermal
19
fluid reservoirs at Yangbajing, Tibet, China. Environmental Earth Science, 59, 1589–1597.
https://doi.org/10.1007/s12665-009-0145-y
Han, D., Liang, X., Currell, M.J., Song, X., Chen, Z., Jin, M., Liu, C., Han, Y. (2010). Environmental isotope
and hydrochemical characteristics of groundwater systems in Daying and Qicun geothermal fields, Xinzhou
Basin, Shanxi, China. Hydrological Processes, 24, 3157–3176. https://doi.org/10.1002/hyp.7742
Hosono, T., Nakano, T., Igeta, A., Tayasu, I., Tanaka, T., Yachi, S. (2007). Impact of fertilizer on a small
watershed of Lake Biwa: use of sulfur and strontium isotopes in environmental diagnosis. Science of the
Total Environment, 384, 342–354. https://doi.org/10.1016/j.scitotenv.2007.05.033
Ikawa, R., Kagabu, M. (2009) Groundwater flow system in Rokugo alluvial fan as revealed by transition of
geochemical data for spring water. Journal of Japanese Association of Hydrological Sciences, 39, 1-14 (in
Japanese with English abstract)
Iwasaki, Y., Nakamura, K., Horino, H., Kawashima, S. (2014). Assessment of factors influencing
groundwater level change with groundwater flow simulation considering vertical infiltration from both riceplanted
and
crop-rotated
paddy
fields.
Hydrogeology
Journal,
22,
1841–1855.
https://doi.org/10.1007/s10040-014-1171-8
Jiang, Y. (2011). Strontium isotope geochemistry of groundwater affected by human activities in Nandong
underground
river
system,
China.
Applied
Geochemistry,
26,
371–379.
https://doi.org/10.1016/j.apgeochem.2010.12.010
Joshi, S.K., Rai, S.P., Sinha, R., Gupta, S., Densmore, A.L., Rawat, Y.S., Shekhar, S. (2018). Tracing
groundwater recharge sources in the northwestern Indian alluvial aquifer using water isotopes (δ18O, δ2H
and 3H). Journal of Hydrology, 559, 835–847. https://doi.org/10.1016/j.jhydrol.2018.02.056
Liu, Y., Yamanaka, T. (2012) Tracing groundwater recharge sources in a mountain-plain transitional area
using
stable
isotopes
and
hydrochemistry.
https://doi.org/10.1016/j.jhydrol.2012.06.053
20
Journal
of
Hydrology,
464-465,
116–126.
Maruyama, S., Tada, Y. (2014). Comparison of water isotope analysis between cavity ring-down spectroscopy
and
isotope
ratio
mass
spectrometry.
Geochemical
Journal,
48,
105–109.
https://doi.org/10.2343/geochemj.2.0282
Nakagiri, T., Kato, H., Maruyama, S., Hashimoto, S., Horino, H., Sakurai, S. (2019). Possibility of
quantitative assessment of the contribution of paddy irrigation and caldera lakes to river water in Bali
Island using water isotopic physics. Paddy and Water Environment. https://doi.org/10.1007/s10333-01900742-1 (Published online)
Nakano, T., Tayasu, I., Yamada, Y., Hosono, T., Igeta, A., Hyodo, F., … Yachi, S. (2008). Effect of
agriculture on water quality of Lake Biwa tributaries, Japan. Science of the Total Environment, 389, 132–
148. https://doi.org/10.1016/j.scitotenv.2007.08.042
Négrel, P., Lemiére, B., Grammont, M. Billaud, P., Sengupta B. (2007). Hydrogeochemical processes, mixing
and isotope tracing in hard rock aquifers and surface waters from the Subarnarekha River Basin, (east
Singhbhum
District,
Jharkhand
State,
India).
Hydrogeology
Journal,
15,
1535–1552.
https://doi.org/10.1007/s10040-007-0227-4
Petelet-Giraud, E., Négrel, Ph., Gourcy, L., Schmidt, C., Schirmer, M. (2007). Geochemical and isotopic
constraints on groundwater-surface water interactions in a highly anthropized site. The Wolfen/Bitterfeld
megasite
(Mulde
subcachment,
Germany).
Environmental
Pollution,
148,
707–717.
https://doi.org/10.1016/j.envpol.2007.01.030
Takase, K., Fujihara, Y. (2018). Evaluation of the effects of irrigation water on groundwater budget by a
hydrological model. Proceedings of PAWEES & INWEPF International Conference 2018 in Nara. p.8
Tanaka, K., Segawa, M., Fujihara, Y., Takase, K., Maruyama, T. (2017). High-turbidity Water from
Landslides Affects Groundwater Recharge of Paddy Fields in the Tedori River Alluvial Fan. Journal of
Japan Society of Hydrology and Water Resources, 30 (3), 173–180 (in Japanese with English abstract)
Tanaka, K., Segawa, M., Fujihara, Y., Takase, K., Maruyama, T., Chono, S. (2018). Influence of High21
turbidity Water on Paddy Percolation and Riverbed Seepage in an Alluvial Fan - A case study of the effects
of landslides in the Tedori River basin -, Transactions of The Japanese Society of Irrigation. Drainage and
Rural Engineering 86(1), I_47–I_54 (in Japanese with English abstract)
Thomsen, E., Andreasen, R. (2019). Agricultural lime disturbs natural strontium isotope variations:
Implications
for
provenance
and
migration
studies.
Science
Advances,
5,
1-11,
https://doi.org/10.1126/sciadv.aav8083
Tsuchihara, T., Yoshimoto, S., Ishida, S., Imaizumi, M. (2011). Classification of Recharge Sources of
Groundwater in a Paddy Dominant Alluvial Fan Based on Geochemical and Isotopic Analyses. Technical
report of the National Institute for Rural Engineering, 211, 1–34 (in Japanese with English abstract)
Uliana, M.M., Banner, J.L., Sharp Jr, J.M. (2007). Regional groundwater flow paths in Trans-Pecos, Texas
inferred from oxygen, hydrogen, and strontium isotopes. Journal of Hydrology, 334, 334–346.
https://doi.org/10.1016/j.jhydrol.2006.10.015
Yanai, S., Okazaki, M., Takimoto, H., Ichion, E., Takase, K. (2016a). Influence of high turbid water
generated from a huge landslide occurred in the headwater area of Mt. Hakusan on the Tedori River Basin
environment.
Ishikawa
Prefectural
University
Annual
Report,
2015,
8–27,
https://doi.org./10.20715/aripu.2015.0_8 (in Japanese with English abstract).
Yanai, S., Okazaki, M., Takase, K., Takimoto, H., Ichion, E., Momose, T., ... Honda, Y. (2016b). Influence
of high turbid water generated from a huge landslide occurred in the headwater area of Mt. Hakusan on the
Tedori River Basin environment: Part2. Ishikawa Prefectural University Annual Report, 2016, 9–34,
https://doi.org/10.20715/aripu.2016.0_9 (in Japanese with English abstract).
Yoshida, T., Nakano, T., Shin, K.C., Tsuchihara, T., Minakarwa, H., Miyazu, S., Kubota, T. (2018).
Quantification of seasonal variabilities in groundwater discharge in an extensive irrigation watershed using
H, O, and Sr isotopes. Hydrology and Earth System Sciences, Discuss., https://doi.org/10.5194/hess-2018551
22
Yoshioka, Y., Nakamura, K., Horino, H., Nakano, T., Shin, K.C., Kawashima, S. (2015). Evaluation of
groundwater qualities in a paddy-dominated alluvial fan. Water Science and Technology: Water Supply, 15.6,
1236–1243. https://doi.org/10.2166/ws.2015.088
Yoshioka, I.Y., Nakamura, K., Nakano, T., Horino, H., Shin, K.C., Hashimoto, S., Kawashima, S. (2016).
Multiple-indicator study of groundwater flow and chemistry and the impacts of river and paddy water on
groundwater in the alluvial fan of the Tedori River, Japan. Hydrological Processes, 30, 2804–2816.
https://doi.org/10.1002/hyp.10785
Yoshioka, Y., Ito, M., Nakamura, K., Takimoto, H., Tsuchihara, T. (2018). Assessing the river water groundwater interaction and sources of groundwater recharge based on oxygen and hydrogen isotope
analyses in the Tedori River alluvial fan. Journal of Groundwater Hydrology, 60(2), 205–221.
https://doi.org/10.5917/jagh.60.205 (in Japanese with English abstract)
Xie, X., Wang, Y., Ellis, A., Su, C., Li, M., Duan, M. (2013). Delineation of groundwater flow paths using
hydrochemical and strontium isotope composition: A case study in high arsenic aquifer systems of the
Datong
basin,
northern
China.
Journal
https://doi.org/10.1016/j.jhydrol.2012.10.016
23
of
Hydrology,
476,
87–96.
Figure 1. Maps showing (a) the regional location of the Tedori River basin, and (b) the Tedori River basin
watershed and the neighboring Sai and Kakehashi River basins. Red rectangle in (b) delineates the area of
the Tedori River alluvial fan.
24
Figure 2. Detailed maps of the study area showing (a) surface geology (modified from the Geological Survey
of Japan, 2015), (b) land use conditions in 2014 (data from the National Land Numerical Information
download service, 2014), (c) irrigation channel, and (d) contours of surface and groundwater levels and river
sections of groundwater - river water interactions.
25
Figure 3. Temporal variations of (a) monthly precipitation (gray bar) and annual precipitation (black dash
line), (b) Tedori River water turbidity, (c) river discharge (blue curve) and daily precipitation (black bar), (d)(f) groundwater levels along the left (red curve) and right banks (blue curve).
26
Figure 4. Detailed maps of the study area showing (a) sampling sites of groundwater and (b) sampling sites
of surface water.
Note: 1, 7, 18, 19 sites are not shown and data are unavailable.
27
Figure 5. Distribution of TN concentrations (grey scale) and hexadiagrams indicating dissolved ion
concentrations in groundwater in (a) June 2011 and (b) June 2016. Hexadiagram symbol colors indicate the
zone of the study area (see Figure 4a).
28
Figure 6. Comparison of dissolved ion concentrations, TN, oxygen isotopic compositions, and Sr isotopic
ratios between June 2011 and June 2016.
29
Figure 7. Box plots of chemical and isotopic groundwater components from (a) zone I, the left bank of the
Tedori River, (b) zone II, the right bank area near the Tedori River, (c) zones III and IV, the right bank area
farther from the river, and (d) and river waters from the Tedori, Sai, and Kakehashi Rivers. Horizontal lines
in the boxes show the median values, the boxes encompass the second and third quartiles, and whiskers show
maximum and minimum values.
30
Figure 8. 87Sr/86Sr ratios of Tedori (RT-), Sai (RS-), Kakehashi (RK-) River waters and precipitation.
31
Figure 9. Distribution of shallow groundwater
87Sr/86Sr
ratios (circles and background interpolated color
map) in the study site in (a) June 2011 and (b) June 2016. The
87Sr/86Sr
ratios of river waters and paddy
ponding waters are shown as triangles and rectangles for comparison (see Figure 4 and d for symbols).
32
Figure 10. Groundwater (circles) and surface water 87Sr/86Sr ratios vs the reciprocal of Sr concentration in
(a) June 2011 and (b) April, (c) June, (d) August, (e) October, (f) December 2016, and (g) all sampling periods
and the conceptural models. Red cross shows mixing rate with 20％ increments in each survey time. Twoendmember mixing areas between average values of all the Tedori River water (100％) and three groundwater
samples in zone III (0%) are shown in 20% increments by the light to dark gray shaded areas. See text for
details of the mixing model. Overlapping mixing areas are not shaded.
33
Figure 11. Comparison of mixing ratios of the Tedori River water between end member mixing analysis using
δ18O and δD (Tsuchihara et al., 2011) and
87Sr/86Sr
Figures represent the sampling location (see Figure 3).
34
and Sr concentration (this study). Numbers in the
Figure 12. Mixing ratios of Tedori River water to zone III/IV groundwater (percent) in (a) June 2011 and
(b) April, (c) June, (d) August, (e) October, and (f) December 2016. Black symbols plotted outside of the
mixing areas in Figure 10, and were assigned mixing ratios of zero.
Data Availability Statement
Data available on request due to privacy/ethical restrictions
35
...
論文の公開元へ
