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Article: Breathing of coastal vadose zone induced by sea level fluctuations

TitleBreathing of coastal vadose zone induced by sea level fluctuations
Authors
Issue Date2004
PublisherAmerican Geophysical Union.
Citation
Geophysical Research Letters, 2004, v. 31 n. 11, p. L11502 1-4 How to Cite?
AbstractTide-induced variations in subsurface air pressure, mainly between -1.0 to 2.0 kPa, are observed in coastal areas in Hong Kong. A two-dimensional model which couples the two-phase air-water flow in unsaturated and saturated zones successfully reproduces the observed air pressure under no rain conditions. The simulation reveals that significant increases in air pressure depend on the tidal rate, not necessarily on the amplitude of the sea level fluctuation. With rainfall, abnormal air pressure 2-9 times greater than without rainfall can be generated when the geological structure, the period and intensity of rain, and the timing of rainfall with respect to the maximum tidal rate combine favorably. This study provides a better understanding of the interactions among the sea tides, barometric pressure variations, groundwater and air-water flow, and rainfall. This natural coastal breathing phenomenon has relevance to the transfer of gases across the soil-seawater-atmosphere interface and to coastal environments around the world. Copyright 2004 by the American Geophysical Union.
Persistent Identifierhttp://hdl.handle.net/10722/72434
ISSN
2015 Impact Factor: 4.212
2015 SCImago Journal Rankings: 3.323
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorJiao, JJen_HK
dc.contributor.authorLi, Hen_HK
dc.date.accessioned2010-09-06T06:41:46Z-
dc.date.available2010-09-06T06:41:46Z-
dc.date.issued2004en_HK
dc.identifier.citationGeophysical Research Letters, 2004, v. 31 n. 11, p. L11502 1-4en_HK
dc.identifier.issn0094-8276en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72434-
dc.description.abstractTide-induced variations in subsurface air pressure, mainly between -1.0 to 2.0 kPa, are observed in coastal areas in Hong Kong. A two-dimensional model which couples the two-phase air-water flow in unsaturated and saturated zones successfully reproduces the observed air pressure under no rain conditions. The simulation reveals that significant increases in air pressure depend on the tidal rate, not necessarily on the amplitude of the sea level fluctuation. With rainfall, abnormal air pressure 2-9 times greater than without rainfall can be generated when the geological structure, the period and intensity of rain, and the timing of rainfall with respect to the maximum tidal rate combine favorably. This study provides a better understanding of the interactions among the sea tides, barometric pressure variations, groundwater and air-water flow, and rainfall. This natural coastal breathing phenomenon has relevance to the transfer of gases across the soil-seawater-atmosphere interface and to coastal environments around the world. Copyright 2004 by the American Geophysical Union.en_HK
dc.languageengen_HK
dc.publisherAmerican Geophysical Union.en_HK
dc.relation.ispartofGeophysical Research Lettersen_HK
dc.rightsGeophysical Research Letters. Copyright © American Geophysical Union.en_HK
dc.titleBreathing of coastal vadose zone induced by sea level fluctuationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0094-8276&volume= 31 &issue=selected as AGU highlight&spage=No. 13 L11502 10.1029/2004GL019572.&epage=&date=2004&atitle=Breathing+of+coastal+vadose+zone+induced+by+sea+level+fluctuationsen_HK
dc.identifier.emailJiao, JJ:jjiao@hku.hken_HK
dc.identifier.authorityJiao, JJ=rp00712en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1029/2004GL019572en_HK
dc.identifier.scopuseid_2-s2.0-4143057039en_HK
dc.identifier.hkuros91475en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-4143057039&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume31en_HK
dc.identifier.issue11en_HK
dc.identifier.spageL11502 1en_HK
dc.identifier.epage4en_HK
dc.identifier.isiWOS:000222324300002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridJiao, JJ=7102382963en_HK
dc.identifier.scopusauthoridLi, H=35769216800en_HK

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