Sources of suspended and deposited sediment in a broadland river
作者:
P. N. Garrad,
R. D. Hey,
期刊:
Earth Surface Processes and Landforms
(WILEY Available online 1989)
卷期:
Volume 14,
issue 1
页码: 41-62
ISSN:0197-9337
年代: 1989
DOI:10.1002/esp.3290140105
出版商: John Wiley&Sons, Ltd
关键词: Suspended;sediment;X‐ray diffraction;Norfolk Broads;Bank erosion
数据来源: WILEY
摘要:
AbstractIncreasing rates of bank erosion and sediment deposition have been reported from the Norfolk Broads since the early 19th century. The major sources of both suspended and deposited sediment in the rivers and Broads is quantified using sediment mineralogy, identified by X‐ray diffraction. This indicates that higher proportions of bank derived sediment are present in suspension in the waterway during the summer months, due primarily to bank erosion by motor craft. Dated sediment cores show how the sources of inorganic sediment have changed over time. Whilst in the past upland catchment sources dominated, at present material is mainly derived from river bank materia
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