The Behavior of Arsenic in Selected United Kingdom Estuaries

1983 ◽  
Vol 40 (S2) ◽  
pp. s143-s150 ◽  
Author(s):  
W. J. Langston

High As concentrations occur in certain United Kingdom estuaries as a result of mineralization and associated processes including mining and metal refining. Analyses of dissolved and particulate As, carried out in estuaries of differing contamination, indicate that As is readily precipitated with Fe during mixing at the freshwater–seawater interface. This gives rise to significant correlations between the two elements in suspended and bottom sediments. More than 80% of the As entering Restronguet Creek, the most contaminated of the estuaries studied, is retained by estuarine sediments, which consequently act as sinks for riverine inputs and limit transport of dissolved species to coastal waters. However, the behavior of As in different estuaries varies with the physicochemical conditions present and the nature of the source. Most significantly, remobilization of sediments is recognized as a feature affecting the cycling of As in the Tamar Estuary.

1985 ◽  
Vol 38 (1) ◽  
pp. 76-80
Author(s):  
A. N. Cockcroft

Traffic separation schemes and other routing measures have now been established in the coastal waters of many countries and new schemes are being introduced each year. Traffic separation was originally intended to reduce the risk of collision between ships proceeding in opposite directions but this paper explains how routing measures are now being used mainly for coastal protection. Improvements in navigational aids may lead to more extensive routing schemes in the future with increasing restriction on the movement of shipping.The first traffic separation schemes adopted by IMCO (now IMO) in 1965 and 1968 were based on proposals made by the Institutes of Navigation of France, the Federal German Republic and the United Kingdom. In the report submitted to the Organisation by the Institutes in 1964 it was stated that ‘the object of any form of routing is to ease the congestion and lessen the likelihood of end-on encounters by separating opposing streams of traffic …’.


2004 ◽  
Vol 23 (2) ◽  
pp. 471 ◽  
Author(s):  
Kevin V. Thomas ◽  
Jan Balaam ◽  
Mark Hurst ◽  
Zoya Nedyalkova ◽  
Ovanes Mekenyan

2020 ◽  
Vol 48 (1) ◽  
pp. 142-156
Author(s):  
I. A. Melnikov

Systematic study of Antarctica began only a century and a half after its discovery by the Russian expedition of F. Bellingshausen and M. Lazarev on the sloops “Vostok” and “Mirny” on January 16 (20), 1820. Since the International Geophysical Year (IGY) in 1956, regular studies of ice cover, subglacial topography, geomorphology of the surrounding seas and bottom sediments, as well as marine and continental biological communities have begun on the continent and coastal waters. Scientists from the Institute of Oceanology took part in the first Russian Antarctic expeditions. Their work gave new knowledge about the nature of Antarctica and largely determined the scientific direction of its future research.


2021 ◽  
Vol 147 (5) ◽  
pp. 04021015
Author(s):  
William H. McAnally ◽  
Ashish J. Mehta ◽  
Andrew J. Manning
Keyword(s):  

1999 ◽  
Vol 18 (8) ◽  
pp. 1791-1800 ◽  
Author(s):  
Yvonne Allen ◽  
Alexander P. Scott ◽  
Peter Matthiessen ◽  
Sarah Haworth ◽  
John E. Thain ◽  
...  

Author(s):  
F. G. T. Holliday ◽  
J. H. S. Blaxter

The herring(Clupea harengus L.) deposits its eggs in the coastal waters around the North Atlantic Ocean, North Sea, and Baltic Sea. The salinity on the spawning grounds may vary from about 35%0 to 5%0. For instance, Brandhorst (1959) reports that successful spawning tookplace in the Kiel Canal in salinities down to 5%0, and Ford (1929) records that ripe herring have been found in the Tamar estuary. In a series of experiments Ford found that the eggs of herring could be successfully fertilized and incubated even in a salinity of 4·8%0. McMynn & Hoar (1953) investigated the effect of salinity on the development of the Pacific herringC. pallasii and found it had a wide tolerance, the lower level being somewhere between o and 6‰


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