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dc.contributor.authorWasson, RJ
dc.contributor.authorFurlonger, L
dc.contributor.authorParry, D
dc.contributor.authorPietsch, T
dc.contributor.authorValentine, E
dc.contributor.authorWilliams, D
dc.date.accessioned2017-05-03T15:33:26Z
dc.date.available2017-05-03T15:33:26Z
dc.date.issued2010
dc.date.modified2010-07-15T09:44:20Z
dc.identifier.issn0169-555X
dc.identifier.urihttp://hdl.handle.net/10072/32208
dc.description.abstractThe Daly River occupies a mainly undisturbed large catchment in the Australian wet-dry tropics. Concerns about possible increased sediment input to the River from clearing and cropping have motivated this study of fine sediment sources. Using geochemical tracers for both modern sediments and alluvial bench deposits, it is shown that, for the last ~ 30 years, 89-97% of the fine sediment originates from erosion by gullying and channel change. There is no discernible input of top soil from the cleared land adjacent to the Daly River in the study area. The analysis and OSL dating of the alluvial benches have also provided data on the age of (and inferences about the causes of) bench formation, flood frequency change, sedimentation rate change, and episodes of sand transport. The benches are being destroyed as the channel widens (contributing sediment to the river) and the bed of the Daly appears to be shallowing, both responses to increased overbank flows. The sediment source created by channel widening is almost all the result of hydrologic change, with no discernible role for land use.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom161
dc.relation.ispartofpageto174
dc.relation.ispartofissue3
dc.relation.ispartofjournalGeomorphology
dc.relation.ispartofvolume114
dc.rights.retentionY
dc.subject.fieldofresearchSurface Processes
dc.subject.fieldofresearchGeology
dc.subject.fieldofresearchPhysical Geography and Environmental Geoscience
dc.subject.fieldofresearchcode040607
dc.subject.fieldofresearchcode0403
dc.subject.fieldofresearchcode0406
dc.titleSediment sources and channel dynamics, Daly River, Northern Australia
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2010
gro.hasfulltextNo Full Text
gro.griffith.authorPietsch, Tim


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