Publication:
Hydrochemistry of episodic drainage waters discharged from an acid sulfate soil affected catchment

dc.contributor.author Green, Rosalind en_US
dc.contributor.author Melville, Michael en_US
dc.contributor.author Waite, T en_US
dc.contributor.author Mcdonald, B en_US
dc.date.accessioned 2021-11-25T14:15:33Z
dc.date.available 2021-11-25T14:15:33Z
dc.date.issued 2006 en_US
dc.description.abstract The water quality of drainage discharged via pumping from an acid sulfate soil (ASS) affected catchment used for sugar cane farming is temporally very variable and is influenced by the various rain event magnitudes, their antecedents, and the particular phase of the discharge in any rain event. Rainfall episodes can cause substantial changes in acidity and dissolved metal concentrations in ASS drainage waters over very short time scales with minimum pH often reached within a few hours of initiation of the rainfall event. The initial increase in acidity and dissolved metals concentrations often observed can be attributed mainly to `first flush` effects resulting from mobilization of salts present in the upper soil profile. During the middle of a large rainfall event dilution effects may result in a decrease in concentrations of dissolved species, but increases in acidity and dissolved metals (particularly aluminium) concentrations in the recession portion of the hydrograph often occur as small field drains discharge into main channels. These observations assist both in understanding of the hydrogeochemical processes leading to acid and metals release from acid sulfate soils affected catchments, and in developing appropriate strategies to treat contaminated discharge waters from such catchments. © 2005. en_US
dc.identifier.issn 0022-1694 en_US
dc.identifier.uri http://hdl.handle.net/1959.4/42300
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/3.0/au/ en_US
dc.source Legacy MARC en_US
dc.subject.other Water resources en_US
dc.subject.other Soils en_US
dc.subject.other Drainage en_US
dc.subject.other Discharge (fluid mechanics) en_US
dc.subject.other Discharge (fluid mechanics) en_US
dc.subject.other Discharge (fluid mechanics) en_US
dc.subject.other Discharge (fluid mechanics) en_US
dc.subject.other Discharge (fluid mechanics) en_US
dc.subject.other Discharge (fluid mechanics) en_US
dc.title Hydrochemistry of episodic drainage waters discharged from an acid sulfate soil affected catchment en_US
dc.type Journal Article en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.accessRights.uri http://purl.org/coar/access_right/c_14cb
unsw.relation.faculty Engineering
unsw.relation.faculty Science
unsw.relation.ispartofissue 1-4 en_US
unsw.relation.ispartofjournal Journal of Hydrology en_US
unsw.relation.ispartofpagefrompageto 356-375 en_US
unsw.relation.ispartofvolume 325 en_US
unsw.relation.originalPublicationAffiliation Green, Rosalind, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Melville, Michael, Biological, Earth & Environmental Sciences, Faculty of Science, UNSW en_US
unsw.relation.originalPublicationAffiliation Waite, T, Civil & Environmental Engineering, Faculty of Engineering, UNSW en_US
unsw.relation.originalPublicationAffiliation Mcdonald, B, Biological, Earth & Environmental Sciences, Faculty of Science, UNSW en_US
unsw.relation.school School of Civil and Environmental Engineering *
unsw.relation.school School of Biological, Earth & Environmental Sciences *
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