Decomposition technique for contributions to groundwater heads from inside and outside of an arbitrary boundary: application to Guantao County, North China Plain
dc.contributor.author
Li, Ning
dc.contributor.author
Kinzelbach, Wolfgang
dc.contributor.author
Li, Haitao
dc.contributor.author
Li, Wengpeng
dc.contributor.author
Chen, Fei
dc.date.accessioned
2019-07-15T07:11:07Z
dc.date.available
2019-07-15T02:26:06Z
dc.date.available
2019-07-15T07:08:31Z
dc.date.available
2019-07-15T07:11:07Z
dc.date.issued
2019-07-08
dc.identifier.issn
1027-5606
dc.identifier.issn
1607-7938
dc.identifier.other
10.5194/hess-23-2823-2019
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/353114
dc.identifier.doi
10.3929/ethz-b-000353114
dc.description.abstract
To assess the efficiency of the groundwater management of an administrative unit, we propose decomposing the groundwater head changes within an administrative unit into inside and outside contributions by using numerical models. Guantao County of Hebei Province, China, serves as an example to demonstrate the decomposition technique. The groundwater flow model of Guantao was constructed using observed heads as prescribed head boundary conditions. The model was coupled with Hydrus 1-D to calculate the groundwater recharge distribution in time reflecting the delay and damping effects of the soil column on seepage at the surface. The model was calibrated by adjusting parameters such as hydraulic conductivities, recharge infiltration ratios and specific yields. The calibrated parameters are then used in a large model with a boundary at a large distance from Guantao administrative boundary to determine the groundwater head changes due to inside drivers. The differences of the two models on the Guantao boundary serve as the specified head values on the boundary for a small-scale model, which is used to calculate the groundwater head imposed by outside drivers. To eliminate inconsistencies caused by the different types of boundary conditions of large and small models, the groundwater head changes due to inside drivers must be updated. The results indicate that the groundwater head changes in the center and south of Guantao County are influenced equally by both inside and outside contributions, while in the north outside contributions have the stronger impact. On average, 48.5 % of groundwater head changes in the whole of Guantao County is influenced by inside contributions, while 51.5 % is due to outside contributions. The sensitivity analysis shows that the groundwater head changes and their decomposition are much more sensitive to infiltration ratios than to the aquifer parameters. The parameters within Guantao have a certain influence on the net groundwater head changes, while the parameters outside of Guantao only have an influence on the decomposition.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Decomposition technique for contributions to groundwater heads from inside and outside of an arbitrary boundary: application to Guantao County, North China Plain
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Hydrology and Earth System Sciences
ethz.journal.volume
23
en_US
ethz.journal.issue
7
en_US
ethz.journal.abbreviated
Hydrol. Earth Syst. Sci.
ethz.pages.start
2823
en_US
ethz.pages.end
2840
en_US
ethz.size
18 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02608 - Institut für Umweltingenieurwiss. / Institute of Environmental Engineering::03473 - Burlando, Paolo / Burlando, Paolo
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02608 - Institut für Umweltingenieurwiss. / Institute of Environmental Engineering::03473 - Burlando, Paolo / Burlando, Paolo
ethz.date.deposited
2019-07-15T02:26:17Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-07-15T07:08:39Z
ethz.rosetta.lastUpdated
2023-02-06T17:25:55Z
ethz.rosetta.versionExported
true
ethz.COinS
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