Geography, Ocean, Salinity of Ocean and Seas. Low salinity is noted infront of river mouths (Yellow River = 300/00, and Yangtzekiang = 330/00). Salinity recorded at 50N, 150N and 150S as 34.980/00,360/00 and 37.770/00 respectively indicates increasing trend of salinity from equator towards the tropics of Cancer and Capricorn. It may be simply stated that the volume of water in the oceans is increased due to heavy rainfall and thus the ratio of salt to the total volume of water is reduced. In 2011, the salinity of the Dead Sea, which is situated between Israel and Jordan, was measured at 34.2%, though its average salinity is 31.5%. Similarly, salinity is reduced along the north-eastern coasts of N. America due to cool Labrador Current. (d) show […] 3. M e a s u r i n g s a l i n i t y Table 26.2 presents latitude- wise distribution of oceanic salinity in both the hemi­spheres. How can I get in touch with Denzel Washington's mother lenox? This is why the Gulf of Mexico records 360/00 to 370/ 00 salinity whereas it is only 340/00 in the Gulf of California. Salinity of 24.7 (24.7 o/oo) has been considered as the upper limit to demarcate ‘brackish water’. 7 0 obj The amount of salt in the inland seas and lakes is controlled by the rate of evaporation, temperature, influx of river water and the presence or absence of outlets. Modern CTDs can be outfitted with an array of probes measuring parameters like light, turbidity (water clarity), dissolved gases etc. In general subtropical high pressure belts and trade wind belts record rapid rate of evaporation which increases salinity but cloudy sky with high humidity lowers down salinity in the equatorial belt. Introduction to Oceanography by Paul Webb is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted. So why don’t the proportions in the oceans change? >> aus oder wählen Sie 'Einstellungen verwalten', um weitere Informationen zu erhalten und eine Auswahl zu treffen. Distribution 4. Some representative salinity profiles are shown in Figure 5.3.4. Salinity of partially enclosed seas in the higher latitudes is seldom controlled by latitudes rather it depends on influx of melt-water. Bordered by Israel and Jordan, the Dead Sea has a reputation as the saltiest sea in the world, with a salinity of around 34%, about 10 times as salty as the Atlantic and Pacific Oceans. 2 0 obj The North Sea in spite of its location in higher latitudes records 34%o salinity due to more saline water brought by the North Atlantic Drift. Conductivity probes are often bundled into an instrument called a CTD, which stands for Conductivity, Temperature, and Depth, which are the most commonly-measured parameters. stream If you evaporated a litre of Dead Sea water, you’d have around 250g of salt left behind, and in the whole of the Dead Sea there are about 37 billion tonnes of the stuff.

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