7 ocean water chemistry

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7 ocean water chemistry

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Ocean Water Chemistry Figure 4.17a http://www.nhptv.org/ Distribution of Earth’s Water • Oceans • Ice Caps and Glaciers • Atmosphere • Rivers and Lakes • Inland Seas • Groundwater 97.2 % 2.15 % 0.001 % 0.009 % 0.008 % 0.625 % Ocean Water is SALTY • Salinity: Total amount of dissolved solids • Units: o/oo = 1/1000 • Range: 33 – 37 o/oo • Increase in salinity: – Increase in Density – Decrease in Freezing Point – Decrease in Vapor Pressure – Increase in Osmotic Pressure Origin of Salts in Oceans • Rivers (largest transport of chemicals to ocean) – Rain + CO2  H2CO3 – Si, Al, Na, K, Mg • Volcanoes – Cl, S, CO2 • Dust / Rain – Fe, Si • Anthropogenic – CO2, P Example Geochemical Cycle Concept of Steady State Example Geochemical Cycle http://www.nhptv.org/ How we measure light penetration? Secchi Disc Water Refraction Eschrichtius robustus Sound Velocity • Influenced by Salinity, Temperature and Pressure – Increases with Salinity – Increases with Temperature – Increases with Pressure • Concept of Midwater Sound Channel Study in Detail Fig 5-19! Sound Channel Humpback Whales Megaptera novaeangliae Gray Whale & Sonar Proposal Eschrichtius robustus Gray Whale Migration Acoustic Pollution

Ngày đăng: 01/12/2016, 23:46

Mục lục

  • Slide 1

  • Slide 2

  • Figure 4.17a

  • Slide 4

  • Slide 5

  • Distribution of Earth’s Water

  • Ocean Water is SALTY

  • Origin of Salts in Oceans

  • Example Geochemical Cycle

  • Example 2 Geochemical Cycle

  • Residence Time (T = Ocean amount/Output rate)

  • Residence Time - Concentration

  • Slide 13

  • Dissolved Gases

  • Gases in Atmosphere & Oceans

  • Slide 16

  • Seawater pH

  • Slide 18

  • Slide 19

  • Slide 20

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