Physico-chemical characteristics and postglacial desalination of Stanwell–Fletcher Lake, Arctic Canada

1970 ◽  
Vol 7 (3) ◽  
pp. 900-911 ◽  
Author(s):  
Brian R. Rust ◽  
John P. Coakley
Keyword(s):  
Sea Level ◽  
Heat Input ◽  
Sea Water ◽  
Salt Water ◽  
Arctic Lakes ◽  
Chemical Characteristics ◽  
Lake Basin ◽  
Meromictic Lakes ◽  
Isostatic Uplift ◽  
Physico Chemical

Stanwell–Fletcher Lake is a cold monomictic Arctic lake, essentially isothermal at about 1.5 °C, with almost complete ice cover throughout the year. The annual heat input is about 13 000 cal cm−2, much less than that of dimictic Arctic lakes. The lake is isochemical, with very low ionic concentrations.The lake basin was formed during the Pleistocene by glacial scouring of soft sediments from a graben. As the ice retreated the basin filled with sea water, and became a fjord. Subsequent isostatic uplift raised the marine shorelines to 150 m above present sea level; the uplift curve indicates emergence of the fjord sill and termination of estuarine conditions about 3500 years ago. Tidal influx persisted for about 1100 years before the lacustrine phase started.Comparisons with modern fjords and coastal meromictic lakes suggest that most of the salt left the lake during its lacustrine phase. The mechanism was probably entrainment of salt water into a deep freshwater current flowing over the chemocline due to convective circulation in summer.

scholarly journals NATURAL CLEANING OF OIL POLLUTED SEASHORES

1972 ◽  
Vol 1 (13) ◽  
pp. 144 ◽  
Author(s):  
Georges Drapeau
Keyword(s):  
Sea Water ◽  
Wave Action ◽  
Fuel Oil ◽  
Chemical Characteristics ◽  
Stable Emulsion ◽  
Mechanical Abrasion ◽  
Physico Chemical ◽  
Main Factors ◽  
One Year ◽  
Type Fuel

Field observations were carried out for a period of 20 months on the seashores of Chedabucto Bay, following the spillage of 108, 000 barrels of bunker C oil in the bay by the tanker Arrow in February 1970. The main factors that control the natural cleaning of seashores are as follows: 1) Physico-chemical characteristics of oil: The bunker C-type fuel oil carried by the tanker Arrow forms, when spilled at sea, a very stable emulsion containing some 40 percent sea water. The emulsion formed is 40 times as viscous as pure bunker C (30,000 poises at 32°F). 2) Nature of polluted seashore: The natural cleaning of seashores is essentially mechanical. Abrasion of oil is most rapid on sand beaches because sand-size sediments are moved more vigourously by wave action. Such beaches clean within six months. Cobble and boulder beaches take one year to clean in Chedabucto Bay. Bedrock outcrops are still covered with a veneer of "dried" oil after 20 months of exposure to the surf. 3) Hydrodynamics of the environment: Wave action is the dominant source of energy that reaches the seashores of Chedabucto Bay and the cleaning of beaches is directly related to the amount of wave energy reaching different areas of the seashore.

scholarly journals Kopalińskie Lake as an example of an anthropogenic reservoir of the southern Baltic Sea coast

2012 ◽  
Vol 12 (1) ◽  
pp. 3-10
Author(s):  
Roman Cieśliński ◽  
Alicja Olszewska
Keyword(s):  
Water Balance ◽  
Lake Water ◽  
The Other ◽  
Anthropogenic Activity ◽  
Chemical Characteristics ◽  
Lake Basin ◽  
Coastal Lakes ◽  
Basin Morphometry ◽  
Physico Chemical ◽  
Sea Coast

Abstract The aim of this study is to discuss the water balance of Kopalińskie Lake, which is one of a few reservoirs on the Polish coast formed from anthropogenic activity. To realize this aim, lake basin morphometry and catchment hydrography were characterized. Moreover, the influence of the sea and the physico-chemical characteristics of the lake water were defined. As a result, the main characteristics of the lake and its catchment were found. Common characteristics of Kopalińskie Lake, as well as the characteristics that differentiate this reservoir from the other coastal lakes located on the Polish coast are presented in this work.

Investigational Studies on Quantity of Salinity in Netravati River Estuary Sand-Coastal Karnataka

2018 ◽  
Vol 6 (6) ◽  
pp. 46
Author(s):  
Raveesha P ◽  
K. E. Prakash ◽  
B. T. Suresh Babu
Keyword(s):  
Brackish Water ◽  
Sea Water ◽  
Salt Water ◽  
Construction Material ◽  
Salt Content ◽  
River Estuary ◽  
Sand Sample ◽  
River Sand ◽  
Natural Aggregates

The salt water mixes with fresh water and forms brackish water. The brackish water contains some quantity of salt, but not equal to sea water. Salinity determines the geographic distribution of the number of marshes found in estuary. Hence salinity is a very important environmental factor in estuary system. Sand is one major natural aggregate, required in construction industry mainly for the manufacture of concrete. The availability of good river sand is reduced due to salinity. The quality of sand available from estuarine regions is adversely affected due to this reason. It is the responsibility of engineers to check the quality of sand and its strength parameters before using it for any construction purpose. Presence of salt content in natural aggregates or manufactured aggregates is the cause for corrosion in steel. In this study the amount of salinity present in estuary sand was determined. Three different methods were used to determine the salinity in different seasonal variations. The sand sample collected nearer to the sea was found to be high in salinity in all methods.  It can be concluded that care should be taken before we use estuary sand as a construction material due to the presence of salinity.

Assessing flood risk and detecting changes of salt water inflow in a coastal micro-tidal brackish marsh using GIS

2008 ◽  
Vol 37 (3) ◽  
Author(s):  
Jacek Urbański ◽  
Agata Ślimak
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Flood Risk ◽  
Salt Water ◽  
Brackish Marsh ◽  
Distance Functions ◽  
Water Inflow ◽  
Small Range ◽  
Natural Environments ◽  
Baltic Coast

Assessing flood risk and detecting changes of salt water inflow in a coastal micro-tidal brackish marsh using GISIn order to assess changes in salt water inflow and potential flood risks due to sea level rise in a micro-tidal Beka brackish marsh on the Polish Baltic Coast GIS was used. Such wetlands are important elements of coastal zone natural environments. Creating a geodatabase within a GIS system makes it possible to carry out broad analyses of complex systems, such as coastal wetlands. The results indicate that a 40 cm sea-level rise would considerably increase the frequency of flooding in the investigated area, in part because of the small range of the annual sea level oscillations there. A map of the index of changes in saltwater inflow, created with the help of cost-weighted distance (functions), shows that changes which have occurred along the shore, consisting of filling in the drainage channel outlets, have likely had a significant impact on the vegetation of the area.

Study of Physico-chemical Characteristics and Pharmacological Effects of 1-Ethyl-Salicyldene-bis-Ethylene-Diamine and Its Complex with Mn(II)

2019 ◽  
Vol 70 (7) ◽  
pp. 2534-2537
Author(s):  
Gladiola Tantaru ◽  
Mihai Apostu ◽  
Antonia Poiata ◽  
Mihai Nichifor ◽  
Nela Bibire ◽  
...  
Keyword(s):  
Schiff Base ◽  
Chemical Structure ◽  
Antimicrobial Activities ◽  
Ethylene Diamine ◽  
Chemical Characteristics ◽  
Gram Negative Bacteria ◽  
Pharmacological Effects ◽  
Physico Chemical ◽  
Anti Inflammatory ◽  
Inflammatory Effect

The paper presents the synthesis of a new complex combination of a Bis-Schiff base with Mn(II) ions with great potential for antimicrobial and anti-inflammatory activity. A new complex of the Salen-type ligand, 1-ethyl-salicylidene-bis-ethylene diamine was synthetized using Mn(II) ions. The chemical structure was confirmed through 1H-NMR and IR spectroscopy. The antimicrobial activities of the Bis-Schiff base and its complex were tested in comparison with Ampicillin, Chloramphenicol, Tetracycline, Ofloxacin and Nystatin. Those compounds were found to be active against Gram-positive or Gram-negative bacteria, and had an anti-inflammatory effect comparable to that of Indomethacin.

Evaluation of Heavy Metal Contents in Mudflat Solar Salt, Salt Water, and Sea Water in the Nationwide Salt Pan

2012 ◽  
Vol 41 (7) ◽  
pp. 1014-1019 ◽  
Author(s):  
Hag-Lyeol Kim ◽  
Young-Joo Yoo ◽  
In-Sun Lee ◽  
Gang-Hee Ko ◽  
In-Cheol Kim
Keyword(s):  
Heavy Metal ◽  
Sea Water ◽  
Salt Water ◽  
Solar Salt ◽  
Metal Contents ◽  
Salt Pan
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