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Conference Paper: 137Cs reference site characteristics in Hong Kong - some considerations

Title137Cs reference site characteristics in Hong Kong - some considerations
Authors
Issue Date1999
Citation
Physics And Chemistry Of The Earth, Part A: Solid Earth And Geodesy, 1999, v. 24 n. 10, p. 887-891 How to Cite?
AbstractThe distribution of 137Cs is being assessed at input reference sites in Hong Kong. This work suggests that, in certain landscapes, difficulties in identifying potential reference sites and subsequently confirming site stability exert some constraints on 137Cs measurement programmes. While the value of guidelines on site and sample selection has been reaffirmed, concern has emerged about the vertical distributions that may be taken to indicate reference site stability. The decline of 137Cs concentrations down a reference soil profile are often reported to be exponential. Recently, a more complex profile with depleted 137Cs totals at the soil surface has been reported and discussed. Thus there is no clear standard for a reference profile, though the profile has been the only empirical control on a reference site's suitability after selection. This study presents the depth distribution and spatial variation of 137Cs areal activities at three reference sites in Hong Kong. The three sites have different spatial variability and different depth distributions, and serve to illustrate the difficulty of using vertical depth distributions as a confirmation of site stability. One possible independent check is the expected 137Cs total from rainfall records; another is numerical modelling of the predicted profile given the physical and chemical controls on soil 137Cs in reference site profiles.
Persistent Identifierhttp://hdl.handle.net/10722/159105
ISSN
2003 Impact Factor: 1.197
2004 SCImago Journal Rankings: 0.854
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorRuse, MEen_US
dc.contributor.authorPeart, MRen_US
dc.date.accessioned2012-08-08T09:08:02Z-
dc.date.available2012-08-08T09:08:02Z-
dc.date.issued1999en_US
dc.identifier.citationPhysics And Chemistry Of The Earth, Part A: Solid Earth And Geodesy, 1999, v. 24 n. 10, p. 887-891en_US
dc.identifier.issn1464-1895en_US
dc.identifier.urihttp://hdl.handle.net/10722/159105-
dc.description.abstractThe distribution of 137Cs is being assessed at input reference sites in Hong Kong. This work suggests that, in certain landscapes, difficulties in identifying potential reference sites and subsequently confirming site stability exert some constraints on 137Cs measurement programmes. While the value of guidelines on site and sample selection has been reaffirmed, concern has emerged about the vertical distributions that may be taken to indicate reference site stability. The decline of 137Cs concentrations down a reference soil profile are often reported to be exponential. Recently, a more complex profile with depleted 137Cs totals at the soil surface has been reported and discussed. Thus there is no clear standard for a reference profile, though the profile has been the only empirical control on a reference site's suitability after selection. This study presents the depth distribution and spatial variation of 137Cs areal activities at three reference sites in Hong Kong. The three sites have different spatial variability and different depth distributions, and serve to illustrate the difficulty of using vertical depth distributions as a confirmation of site stability. One possible independent check is the expected 137Cs total from rainfall records; another is numerical modelling of the predicted profile given the physical and chemical controls on soil 137Cs in reference site profiles.en_US
dc.languageengen_US
dc.relation.ispartofPhysics and Chemistry of the Earth, Part A: Solid Earth and Geodesyen_US
dc.title137Cs reference site characteristics in Hong Kong - some considerationsen_US
dc.typeConference_Paperen_US
dc.identifier.emailPeart, MR:mrpeart@hkucc.hku.hken_US
dc.identifier.authorityPeart, MR=rp00612en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1464-1895(99)00131-3en_US
dc.identifier.scopuseid_2-s2.0-0033382325en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033382325&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume24en_US
dc.identifier.issue10en_US
dc.identifier.spage887en_US
dc.identifier.epage891en_US
dc.identifier.isiWOS:000084186900006-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridRuse, ME=7003479376en_US
dc.identifier.scopusauthoridPeart, MR=7003362850en_US

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