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Article: Field-monitored variations of soil moisture and matric suction in a saprolite slope

TitleField-monitored variations of soil moisture and matric suction in a saprolite slope
Authors
KeywordsField instrumentation
Matric suction
Moisture content
Rainfall infiltration
Wetting front
Issue Date2005
PublisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj
Citation
Canadian Geotechnical Journal, 2005, v. 42 n. 1, p. 13-26 How to Cite?
AbstractA full-scale field experiment has been conducted in an instrumented saprolite slope in Hong Kong. Soil moisture probes, tensiometers, piezometers, inclinometers, earth pressure cells, and a rain gauge were installed in the slope before and during excavation of a cut. This paper presents the results from soil moisture probes, tensiometers, and piezometers to reveal the surface infiltration process. The soil moisture and matric suction results show that the maximum "wetting front" during the wet season was limited to the top 3 m of soil, and a transient perched water table could develop in the soil during a very heavy rainstorm. A new method based on the variation of volumetric water content in the soil is proposed to analyze rainfall infiltration. The results indicate the following phenomena: (i) rainfall infiltration was around 70% of the total rainfall, (ii) the infiltrated water mainly increased the oil moisture content of the soil at shallow depths, and (iii) the surface vertical infiltration had a very limited effect on the permanent groundwater table at depth. The wetting-front analysis shows that the unsaturated wetting band theory can be used to assess the movement of the wetting front in the unsaturated saprolite soil. © 2005 NRC Canada.
Persistent Identifierhttp://hdl.handle.net/10722/42058
ISSN
2015 Impact Factor: 1.877
2015 SCImago Journal Rankings: 2.093
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, AGen_HK
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorLee, CFen_HK
dc.contributor.authorLaw, KTen_HK
dc.date.accessioned2007-01-08T02:27:55Z-
dc.date.available2007-01-08T02:27:55Z-
dc.date.issued2005en_HK
dc.identifier.citationCanadian Geotechnical Journal, 2005, v. 42 n. 1, p. 13-26en_HK
dc.identifier.issn0008-3674en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42058-
dc.description.abstractA full-scale field experiment has been conducted in an instrumented saprolite slope in Hong Kong. Soil moisture probes, tensiometers, piezometers, inclinometers, earth pressure cells, and a rain gauge were installed in the slope before and during excavation of a cut. This paper presents the results from soil moisture probes, tensiometers, and piezometers to reveal the surface infiltration process. The soil moisture and matric suction results show that the maximum "wetting front" during the wet season was limited to the top 3 m of soil, and a transient perched water table could develop in the soil during a very heavy rainstorm. A new method based on the variation of volumetric water content in the soil is proposed to analyze rainfall infiltration. The results indicate the following phenomena: (i) rainfall infiltration was around 70% of the total rainfall, (ii) the infiltrated water mainly increased the oil moisture content of the soil at shallow depths, and (iii) the surface vertical infiltration had a very limited effect on the permanent groundwater table at depth. The wetting-front analysis shows that the unsaturated wetting band theory can be used to assess the movement of the wetting front in the unsaturated saprolite soil. © 2005 NRC Canada.en_HK
dc.format.extent811880 bytes-
dc.format.extent4105 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherNRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgjen_HK
dc.relation.ispartofCanadian Geotechnical Journalen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsCanadian Geotechnical Journal. Copyright © N R C Research Press.en_HK
dc.subjectField instrumentationen_HK
dc.subjectMatric suctionen_HK
dc.subjectMoisture contenten_HK
dc.subjectRainfall infiltrationen_HK
dc.subjectWetting fronten_HK
dc.titleField-monitored variations of soil moisture and matric suction in a saprolite slopeen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-3674&volume=42&issue=1&spage=13&epage=26&date=2005&atitle=Field-monitored+variations+of+soil+moisture+and+matric+suction+in+a+saprolite+slopeen_HK
dc.identifier.emailYue, ZQ: yueqzq@hku.hken_HK
dc.identifier.emailTham, LG: hrectlg@hku.hken_HK
dc.identifier.emailLee, CF: leecf@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.identifier.authorityLee, CF=rp00139en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1139/t04-069en_HK
dc.identifier.scopuseid_2-s2.0-19944368805en_HK
dc.identifier.hkuros102312-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-19944368805&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue1en_HK
dc.identifier.spage13en_HK
dc.identifier.epage26en_HK
dc.identifier.isiWOS:000227613300002-
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridLi, AG=7403291637en_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridLee, CF=8068602600en_HK
dc.identifier.scopusauthoridLaw, KT=7202563426en_HK

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