3.3.3.5 Classification of sea water in terms of the downward irradiance in a narrow or broad wavelength band

2005 ◽  
pp. 418-419
Author(s):  
N. K. Hoejerslev
Keyword(s):  
Sea Water ◽  
Wavelength Band

scholarly journals ENGINEERING GEOLOGY PROBLEMS OF THE COASTAL ZONE AROUND ANCIENT ABDERA, XANTHI, N. GREECE.

2018 ◽  
Vol 36 (2) ◽  
pp. 998
Author(s):  
Π. Δελημάνη ◽  
Γ. Ξειδάκης
Keyword(s):  
Coastal Zone ◽  
Engineering Geology ◽  
Sea Water ◽  
Winter Period ◽  
Shallow Water Table ◽  
Human Habitation ◽  
Geotechnical Problems ◽  
Coastal Settlement ◽  
Ancient Abdera

The main engineering geology problems of the coastal zone around Ancient Abdera together with their causes are examined in this paper. The area studied extends from the coastal settlement of Mirodatc» up to the coastal settlement of Mandra, Xanhti prefecture, N. Greece. A geomorphology classification of coasts of the area is presented and maps of the ground inclination and geotechnical zone are constructed. The main geotechnical problems of the area appear to be: inundation of much of the area during winter period; foundation settlement; shallow water table; pollution of the groundwater and arbitrary construction in environmentally protected zones. The area of study gets special interest due to its continues human habitation since the 8 th B.C. century. As it has come but from archaeological and sentimentology studies, the Abdera bay has suffered (long shore bar) and land (torrents, load) results in quick filling in the ancient harbors, making them in navigable and forcing the habitants to more their harborworks further south to deeper sea water.

scholarly journals GEOELECTRICAL IMAGING OF HYDROGEOLOGICAL CONDITIONS OF THE COASTAL ZONE OF WOLIN ISLAND

2016 ◽  
pp. 0-0
Author(s):  
Grzegorz PACANOWSKI
Keyword(s):  
Coastal Zone ◽  
Electrical Resistivity Tomography ◽  
Groundwater Protection ◽  
Sea Water ◽  
Total Dissolved Solids ◽  
Resistivity Tomography ◽  
Water Ingress ◽  
Hydrogeological Conditions ◽  
Geoelectrical Methods

The article discusses the problem of complex hydrogeological conditions in the coastal zone of Wolin Island in Poland. Hydrogeological situation of the island was imaged by geoelectrical methods. Groundwater of the coastal zone is in constant contact with the saline sea waters. This fact constitutes a threat of groundwater degradation and has an influence on the methods of groundwater protection. The resistivity of Quaternary permeable and impermeable deposits is significantly different in areas where groundwater is characterized by low values of total dissolved solids (TDS). This implies that hydrogeological classification of the results obtained from electrical resistivity tomography (ERT) is not difficult. In the study area, the situation is completely opposite and much more complicated because of salty sea water ingress into aquifers. This affects the resistivity values of permeable and impermeable deposits, obtained from geophysical tests.

scholarly journals Observations on the blood of Certain Ascidians, with Special Reference to the Biochemistry of Vanadium

1939 ◽  
Vol 16 (4) ◽  
pp. 499-523
Author(s):  
D. A. WEBB
Keyword(s):  
Sulphuric Acid ◽  
Sea Water ◽  
Chain Complex ◽  
Pigment Cells ◽  
Bile Pigment ◽  
Vanadium Compounds ◽  
Straight Chain ◽  
Orange Pigment ◽  
Theoretical Considerations

The blood of a number of species of Ascidiacea has been examined with reference to the presence of the vanadium chromogen described by Henze, and the results are discussed in connexion with the data available from other authors. The chromogen is always contained, together with sulphuric acid, in a special type of cell described as a vanadocyte. These are found only in the hcidiidae and Perophoridae, though members of certain other families contain vanadium in some other form. The distribution within the group of sulphuric acid in vesicular cells of the blood and test is also discussed. There is no reason to suppose that the pigments of Ascidians, other than the chromogen itself, are vanadium compounds. A curious type of cell inclusion from the orange pigment cells of Ascidia mentula is described. Experimental evidence and theoretical considerations are brought forward to show that the vanadium chromogen is not in any sense a respiratory pigment. At present no function can be ascribed to it. I t is not a protein or porphyrin compound, but seems to consist of vanadium in association with a straight chain complex of pyrrol rings, comparable perhaps to a bile pigment. It seems possible that sea water provides a sufficiently rich source of vanadium to account for the amounts absorbed. The phylogenetic aspects of these facts are considered in relation to Berrill's recentre-classification of the Ascidiacea. The presence of vanadium is a primitive character which has been lost in the more specialized families.

Classification of daily sea-water data

1957 ◽  
Vol 38 (2) ◽  
pp. 191
Author(s):  
Susumu Tabata
Keyword(s):  
Sea Water

scholarly journals KONTAMINASI MERKURI (Hg) DALAM ORGAN TUBUH IKAN PETEK (Leiognathus equulus) DI PERAIRAN ANCOL, TELUK JAKARTA

2016 ◽  
Vol 11 (2) ◽  
pp. 313
Author(s):  
Etty Riani
Keyword(s):  
Water Quality ◽  
Mercury Concentration ◽  
Aquatic Ecosystem ◽  
Sea Water ◽  
Standard Quality ◽  
Gill Histopathology ◽  
Water Lever ◽  
Accumulation Indicator

Mercury (Hg) which is contained in aquatic ecosystem can enter and be accumulated to organism’s body, like on petek fish (Leiognathus equulus). The research aimed to see mercury concentration in aquatic ecosystem, to see mercury concentration in organ of petek fish by AAS (Atomic Absorption Spectrophotometer) and its histopathology response in organs of petek fish. The research was done at Ancol, Jakarta Bay on October-December 2004. There are 16 samples of water and fish from 3 stations.The analysis result of water quality is compared by standard quality of sea water for sea organism life (Kepmen LH No. 51, 2004), mercu ry concentration in fish organ is compared by maximum mercury concentration in fish body by classification of Palar (2004). Ancol water quality is still on normal condition. Mercury concentration in water and petek fish organs had low concentration. Gill and lever contaminated by mercuryis only in station 1 fish, but it is still on normal concentration. Histopathology of petek fish gill is not abnormal, while the lever is necrosis. Water and petek fish is not a good indicator to detect mercury in aquatic ecosystem.Keywords: mercury, petek fish, water, lever, gill, histopathology, accumulation,indicator

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