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Article: Theoretical study of the impact of tide-induced airflow on hydraulic head in air-confined coastal aquifers

TitleTheoretical study of the impact of tide-induced airflow on hydraulic head in air-confined coastal aquifers
Authors
KeywordsAir-confined aquifer
Hydraulic diffusivity
Hydraulic head fluctuation
Hydraulic parameters
Tidal fluctuation
Issue Date2010
PublisherI A H S Press. The Journal's web site is located at http://www.cig.ensmp.fr/~iahs/
Citation
Hydrological Sciences Journal, 2010, v. 55 n. 3, p. 435-445 How to Cite?
AbstractTide-induced hydraulic head fluctuation results in significant airflow above the water table if the aquifer is air-confined, for example, if the aquifer is capped by low permeability materials. Hypothetical studies on the interaction between tidal fluctuation and airflow in coastal aquifers are carried out using an air-water two-phase numerical model. The results show that both the amplitude of the hydraulic head fluctuation and the distance of influence of the tidal fluctuation increase due to the impact of airflow. For a fixed distance from the coastline, the amplitude of the hydraulic head fluctuation increases with depth, and the hydraulic head fluctuation at small depths lags that at great depths. Tide-induced airflow may be so strong that considerable errors in estimating hydraulic parameters could be generated when models are applied without considering airflow. In an air-confined aquifer, if airflow is neglected, the hydraulic diffusivity could be considerably overestimated. © 2010 IAHS Press.
Persistent Identifierhttp://hdl.handle.net/10722/129176
ISSN
2015 Impact Factor: 2.182
2015 SCImago Journal Rankings: 1.040
ISI Accession Number ID
Funding AgencyGrant Number
Council of the Hong Kong Special Administrative Region, ChinaHKU 7028/05P
Funding Information:

The study was supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (HKU 7028/05P). TOUGH2 was run via the interface of PetraSim.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorGuo, Hen_HK
dc.contributor.authorJiao, JJen_HK
dc.date.accessioned2010-12-23T08:33:16Z-
dc.date.available2010-12-23T08:33:16Z-
dc.date.issued2010en_HK
dc.identifier.citationHydrological Sciences Journal, 2010, v. 55 n. 3, p. 435-445en_HK
dc.identifier.issn0262-6667en_HK
dc.identifier.urihttp://hdl.handle.net/10722/129176-
dc.description.abstractTide-induced hydraulic head fluctuation results in significant airflow above the water table if the aquifer is air-confined, for example, if the aquifer is capped by low permeability materials. Hypothetical studies on the interaction between tidal fluctuation and airflow in coastal aquifers are carried out using an air-water two-phase numerical model. The results show that both the amplitude of the hydraulic head fluctuation and the distance of influence of the tidal fluctuation increase due to the impact of airflow. For a fixed distance from the coastline, the amplitude of the hydraulic head fluctuation increases with depth, and the hydraulic head fluctuation at small depths lags that at great depths. Tide-induced airflow may be so strong that considerable errors in estimating hydraulic parameters could be generated when models are applied without considering airflow. In an air-confined aquifer, if airflow is neglected, the hydraulic diffusivity could be considerably overestimated. © 2010 IAHS Press.en_HK
dc.languageengen_US
dc.publisherI A H S Press. The Journal's web site is located at http://www.cig.ensmp.fr/~iahs/en_HK
dc.relation.ispartofHydrological Sciences Journalen_HK
dc.subjectAir-confined aquiferen_HK
dc.subjectHydraulic diffusivityen_HK
dc.subjectHydraulic head fluctuationen_HK
dc.subjectHydraulic parametersen_HK
dc.subjectTidal fluctuationen_HK
dc.titleTheoretical study of the impact of tide-induced airflow on hydraulic head in air-confined coastal aquifersen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0262-6667&volume=55&issue=3&spage=435&epage=445&date=2010&atitle=Theoretical+study+of+the+impact+of+tide-induced+airflow+on+hydraulic+head+in+air-confined+coastal+aquifers-
dc.identifier.emailJiao, JJ:jjiao@hku.hken_HK
dc.identifier.authorityJiao, JJ=rp00712en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/02626661003739959en_HK
dc.identifier.scopuseid_2-s2.0-84857003989en_HK
dc.identifier.hkuros178628en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84857003989&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume55en_HK
dc.identifier.issue3en_HK
dc.identifier.spage435en_HK
dc.identifier.epage445en_HK
dc.identifier.isiWOS:000278013100011-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectSubsurface air flow induced by sea tides-
dc.identifier.scopusauthoridGuo, H=54989967400en_HK
dc.identifier.scopusauthoridJiao, JJ=7102382963en_HK

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