Examining suspended sediment sources and dynamics during flood events in a drained catchment using radiogenic strontium isotope ratios (⁸⁷Sr/⁸⁶Sr)

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• 作者：Marion Le Gall^a ; ^{marion.legall@lsce.ipsl.fr} ; Olivier Evrard^a ; Franç ; ois Thil^a ; Anthony Foucher^b ; J. Patrick Laceby^a ; Louis Maniè ; re^a ; Sé ; bastien Salvador-Blanes^b ; Sophie Ayrault^a
• 关键词：87Sr/86Sr ratio ; Suspended sediment ; Soil erosion ; Sediment tracing
• 刊名：Chemical Geology
• 出版年：2017
• 出版时间：20 January 2017
• 年：2017
• 卷：449
• 期：Complete
• 页码：147-157
• 全文大小：1535 K
• 卷排序：449

文摘

Soil samples were discriminated according to catchment substrate (i.e. carbonate and silicate) 87Sr/86Sr ratios of suspended sediment varied depending on hydrological conditions Different particle size fractions were modelled for different flood intensities (i.e. < 2 mm and < 2 μm) Carbonate soils dominated two less intense flood events (63%) whereas silicate soils dominated a higher intensity flood (72%) Field drainage systems likely enhance the hillslope to river connectivity, particularly for the finest particles