Estuary and coast water body suspended sediment deposition time sequence monitoring device

Abstract

The invention provides an estuary and coast water body suspended sediment deposition time sequence monitoring device, comprising a deposition moment recording unit and a deposition collection unit, wherein the deposition moment recording unit is arranged on one side to record a suspended sediment deposition moment; the deposition collection unit is arranged on the other side to slow down the influence of the external flow velocity and prevent the collected sediment from resuspending and escaping; and the deposition moment recording unit and the deposition collection unit are fixedly connectedside by side. The suspended sediment in estuary and coast water bodies can be collected quickly and massively, the sedimentary texture of the suspended sediment is maintained in the process of collecting the suspended sediment in the estuary and coast water bodies, and meanwhile the deposition moment and the corresponding water level change are recorded synchronously; by analyzing the collected sedimentary structure of the collected suspended sediment, the sediment transport process in the water body is researched; by analyzing the sediment particle size and performing corresponding isotope observation, the sediment source is understood; and by adoption of collected suspended sediment calibration and an optical turbidity sensor of calibration synchronous observation, the error can be reduced by 3-5 times compared with the near-bottom sediment sample calibration.

Description

technical field [0001] The invention relates to the technical field of water flow measurement, in particular to a time-series monitoring device for suspended sediment deposition in estuary and coast water bodies. Background technique [0002] The estuary and coastal areas are sensitive areas of land-sea coupling, where complex processes such as geophysics, chemistry, biology, and sedimentary landforms are coupled with each other and are extremely complex. The runoff from the upper reaches of the river carries a huge amount of sediment to the estuary, and when it encounters the tidal jacking action, it shows a complex process of sediment resuspension and transport, forming the scouring and silting evolution of the estuary delta. Suspended sediment in estuaries and coasts directly participates in the physical processes of estuaries and oceans. As an important carrier of fine-grained sediments, various nutrients and pollutants, it plays an important role in marine organisms, se...

AI Technical Summary

Problems solved by technology

This method can obtain a large amount of suspended sediment, but the standing process takes a long time

[0004] The amount of suspended sediment obtained by the above methods is small, the process is complicated, and time-consuming, which cannot be well satisfied with the research on the process of suspended sediment in estuary and coastal water bodies.

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