Multiple tracer study in Horonobe, northern Hokkaido, Japan: 1. Residence time estimation based on multiple environmental tracers and lumped parameter models

Kashiwaya, Koki; Hasegawa, Takuma; Nakata, Kotaro; Tomioka, Yuichi; Mizuno, Takashi

doi:10.1016/j.jhydrol.2014.07.025

Cited by 13 publications

(35 citation statements)

References 44 publications

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“…Considering the above, the availability of groundwater recharge and surface flow is obviously different. Even though the range of residence time in groundwater and lakes is wide because of site specific conditions, the results of previous studies support that residence time in groundwater and lakes is generally longer than one year in Japan [20][21][22]. Given the temporal resolution of the present study (one year), freshwater in groundwater and surface flow discharge into lakes has sufficiently long residence times for availability within one year.…”

Section: Availability Assessment Of Groundwater Recharge and Surface supporting

confidence: 64%

The Effect of Land Use on Availability of Japanese Freshwater Resources and Its Significance for Water Footprinting

et al. 2016

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All relevant effects on water must be assessed in water footprinting for identifying hotspots and managing the impacts of products, processes, and services throughout the life cycle. Although several studies have focused on physical water scarcity and degradation of water quality, the relevance of land use in water footprinting has not been widely addressed. Here, we aimed to verify the extent of land-use effect in the context of water footprinting. Intensity factors of land use regarding the loss of freshwater availability are modeled by calculating water balance at grid scale in Japan. A water footprint inventory and impacts related to land use are assessed by applying the developed intensity factors and comparing them with those related to water consumption and degradation. Artificial land use such as urban area results in the loss of many parts of available freshwater input by precipitation. When considering water footprint inventory, the dominance of land use is less than that of water consumption. However, the effect of land use is relevant to the assessment of water footprint impact by differentiating stress on water resources. The exclusion of land use effect underestimates the water footprint of goods produced in Japan by an average of around 37%.

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Section: Availability Assessment Of Groundwater Recharge and Surface supporting

confidence: 64%

The Effect of Land Use on Availability of Japanese Freshwater Resources and Its Significance for Water Footprinting

et al. 2016

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“…Thus this residence time should be mostly interpreted as a weighted mean of idealized residence times (Bethke and Johnson, 2008;Goode, 1996;Jodar et al, 2014;Suckow, 2014;Torgersen et al, 2013;Turnadge and Smerdon, 2014). The major advantage of CFCs and SF 6 resides in the possibility to discriminate different water bodies considering various mixing models (piston flow, binary or exponential), providing information on aquifer functioning (Cook et al, 1995;Jodar et al, 2014;Kashiwaya et al, 2014;Zuber et al, 2005). CFCs and SF 6 are commonly considered as pertinent dating tracers but there are nevertheless some limits to their use (Kashiwaya et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The major advantage of CFCs and SF 6 resides in the possibility to discriminate different water bodies considering various mixing models (piston flow, binary or exponential), providing information on aquifer functioning (Cook et al, 1995;Jodar et al, 2014;Kashiwaya et al, 2014;Zuber et al, 2005). CFCs and SF 6 are commonly considered as pertinent dating tracers but there are nevertheless some limits to their use (Kashiwaya et al, 2014). CFCs may be affected by the transfer processes in the unsaturated zone, local contaminations and degradation processes in anoxic environments causing most of the time offsets to groundwater aging (Aeschbach-Hertig et al, 1998;Beyerle et al, 1999;Gooddy et al, 2006;Gourcy et al, 2009;Heaton and Vogel, 1981;Schwientek et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have been carried out in coastal aquifers using successfully CFCs and SF 6 as groundwater residence times and mixing tracers (Gilmore et al, 2016;Kashiwaya et al, 2014;Kelly and Glenn, 2015;Lee, 2014) but none of them concerned aquifers with strong geological contrast and deep unsaturated zone. Investigations have been carried out within the coastal Miocene plateau of Bonifacio (Corsica, France), most visited place of the island hosting more than two million tourists each year.…”

Section: Introductionmentioning

confidence: 99%

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Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

Santoni

Huneau

Garel

et al. 2016

Journal of Hydrology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Expected end members, which are sea water and shallow spring water, were also shown in Figure 7 as a dashed line [49] …”

Section: Depth Profiles Of D and 18 O And Relationships Between Clmentioning

confidence: 99%

An Evaluation of the Long-Term Stagnancy of Porewater in the Neogene Sedimentary Rocks in Northern Japan

et al. 2018

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A groundwater dating for very old porewater using 36 Cl and 4 He was applied to the Koetoi and Wakkanai formations distributed in the northernmost part in Japan. Measured 36 Cl/Cl in the Koetoi Formation was 2.6 ± 2.0 × 10 −15 and that in the Wakkanai Formation was 8.1 ± 2.5 × 10 −15 . These values are similar to 36 Cl/Cl in situ secular equilibrium calculated from chemical compositions of core suggesting that Cl − ions and porewater have remained in the formations for much longer than half-life of 36 Cl . He concentration in porewater ranged from 1.1 × 10 −6 to 2.6 × 10 −5 (cc STP g w −1 ) and it is much higher than water saturated with air indicating that both formations contain very old porewater. However, the possibility of mixing of young water was indicated because He concentration was lower than that calculated by multiplication of in situ He production and time after the uplift. This possibility was also supported by Cl − , D, and 18 O data. After combining information on 36 Cl/Cl, 4 He, and D and 18 O, it was inferred that the porewater in the deep part of the Wakkanai Formation might have been stagnant since the uplift. The porewater in the Koetoi Formation and the shallow part of the Wakkanai Formation were found to be affected by young surface water.

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Multiple tracer study in Horonobe, northern Hokkaido, Japan: 1. Residence time estimation based on multiple environmental tracers and lumped parameter models

Cited by 13 publications

References 44 publications

The Effect of Land Use on Availability of Japanese Freshwater Resources and Its Significance for Water Footprinting

The Effect of Land Use on Availability of Japanese Freshwater Resources and Its Significance for Water Footprinting

Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

An Evaluation of the Long-Term Stagnancy of Porewater in the Neogene Sedimentary Rocks in Northern Japan

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