Oceanography Week 3
Oceanography Week 3 EAPS 10400 - 001
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This 2 page Class Notes was uploaded by Rachel Rozow on Friday September 16, 2016. The Class Notes belongs to EAPS 10400 - 001 at Purdue University taught by Greg M Michalski in Fall 2016. Since its upload, it has received 4 views. For similar materials see Oceanography in Science at Purdue University.
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Date Created: 09/16/16
Oceanography Week 3 As the temperature of the earth increases, the temperature of the deep ocean is also increasing, though not as quite a substantial of a rate, creating a larger difference between surface temperature and that which resides below the surface. The average temperature of the ocean, should it be suddenly mixed, would be close to 5 C. Because Temperature describes the movement of molecules, it is not necessarily rising as heat is added to a system think phase changes. It takes a substantial amount of energy to make water turn from a solid to liquid, or from liquid to vapor, so a lot of heat could be added without actually making the water “warmer”. The average depth of the ocean is about 3500 m The Challenger Deep in depth = the height of Mt. Everest Hydrothermal vent max = 400C, the pressure allows the water to be over 100C without completely evaporating GIS= Geographical Information System Volcanic eruptions may mask sea level rise Water= Two hydrogen atoms bound with an oxygen atom. Hydrogen bonds are formed through the attraction of oppositely charged ions. These bonds allow water to exist in three different phases: gas, liquid, and solid. Ice structures have more space between the molecules than water, making the solid form less dense than the liquid form. That is why ice floats on the water Seasonal ice structures around Greenland and Antarctica assist in moderating the extremes of changing seasons/temperature. Rather than having Earth’s temperature fluctuate too substantially, the heat added is converted into energy used to elicit changes in the forms of the water water is a very good insulator Thermocline depth of rapidly changing temperature The greater the distance between the surface and depth temperatures, the stratification in the water. Heat is generally trapped in the upper layers of the ocean, keeping it from completely mixing and changing the temperature of the water NaCl > Na+ Cl > the process of dissolving salt into water Halocline the depth of rapidly changing salinity Pyctocline the depth of rapidly changing density, be it from a Halocline or a Thermocline The change in temperature causes a greater change in density than a change in salinity does by about twofold Sea Surface salinity is highest where evaporation exceeds rainfall
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