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Sources of suspended and deposited sediment in a broadland river
Author(s) -
Garrad P. N.,
Hey R. D.
Publication year - 1989
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290140105
Subject(s) - sediment , deposition (geology) , erosion , bank erosion , geology , hydrology (agriculture) , drainage basin , bank , sedimentary budget , environmental science , sediment transport , geomorphology , geography , geotechnical engineering , cartography
Increasing 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 material.