Journal ArticleDOI
A study of the dynamics of suspended matter by means of natural radioactive tracers: an application to the gironde estuary
Reads0
Chats0
TLDR
In this paper, a new turbidimetry method is proposed based on the relation between gamma activity and turbidity T, such as Nt=aTb (Nt counting rate caused by turbidity, a and b experimental coefficients).Abstract:
SUMMARY
The determination of the natural radioelements in suspended matter in rivers and estuaries, lead to a simple relation between gamma activity and turbidity T, such as Nt=aTb (Nt counting rate caused by turbidity, a and b experimental coefficients). A new turbidimetry method is based on this relation and discussed here. In situ measurements have been conducted with field gamma scintillometers and compared with different turbidimetry methods, such as nephelometry, gravi-metry and gamma ray absorptiometry. This method has been particularly convenient to continuous in situ measurements of turbidity from 0.5 g to several hundreds of g/1. This broad range is very well adapted to turbidity studies in estuaries.
The new method has been applied to study suspended matter dynamics in the Gironde estuary (France) during November 1968, as a part of a more general study of natural radioactivity in terrigenous sediments brought into the ocean.read more
Citations
More filters
Book
Metal pollution in the aquatic environment
TL;DR: This significant book provides not only an introduction to the dynamics of aquatic chem istries but also identifies those materials that jeopardize the resources of both the marine and fluvial domains.
Journal ArticleDOI
Rare earth element supply to the Ocean
TL;DR: In this article, a rare earth material balance to the ocean is discussed on the basis of the results presented in this paper, based on the results obtained in the Gironde estuary (France).
Journal ArticleDOI
Coagulation and transport of sediments in the Gironde Estuary
TL;DR: The distribution of suspended particle size and concentration along the Gironde Estuary, France, from the river seaward to the ocean was measured using in situ holography and onboard optical techniques utilizing special procedures in order to avoid floc breakage as mentioned in this paper.
Journal ArticleDOI
Suspended matter and bottom deposits of the Orinoco delta: Turbidity, mineralogy and elementary composition
TL;DR: A three-layer stratification was found in the Boca Grande estuary: a layer of fluid mud near the bottom, a layer at the surface, and a saltwedge of high salinity and low turbidity in between as discussed by the authors, which is related to the nodal point where the movement of the bottom water changes from a resultant landward to a resultant seaward direction.
Journal ArticleDOI
Investigations on dissolved uranium, silicon and on particulate trace elements in estuaries
TL;DR: In this paper, the concentrations of dissolved uranium and silicon and the chemical composition of suspended phases in the Narbada, Tapti and Godavari estuaries have been measured as a function of chlorosity.
References
More filters