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Using 239Pu as a tracer for fine sediment sources in the Daly River, Northern Australia

Lal, Rajeev; Fifield, L Keith; Tims, Stephen; Wasson, R.J.; Howe, D


The Daly River drains a large (52500 km2) and mainly undisturbed catchment in the Australian wet-dry tropics. Clearing and cropping since 2002 have raised concerns about possible increased sediment input into the river and motivated this study of its fine sediment sources. Using 239Pu as a tracer it is shown that the fine sediments originate mainly from erosion by gullying and channel change. Although the results also indicate that the surface soil contribution to the river channel sediments...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Conference paper
Source: EPJ Web of Conferences
DOI: 10.1051/epjconf/20159100006
Access Rights: Open Access


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