{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

01 - Organisms are re-circulated via wind-driven vertical...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
10/01 Why is there water in the ocean? Hydrologic Cycle + Precipitation + Run-off - Evaporation Continents: Precipitation > Evaporation Ocean: Evaporation > Precipitation Physical Differences Between Marin and Terrestrial Systems 1) Water is 850x denser, 60x more viscous than air - Changes in Buoyancy - Entire Ecosystems supported in water column - Filter Feeding ex. whales - Changes in Propulsion 2) Takes lots of energy to convert water -> ice -> water -> vapor - Acts as an energy absorption (temp) buffer 3) Surface tension at air-water interface traps particles - Entraps flotsam(wreckage), including pollutants -> unintentionally trapped in surface water 4) Water is denser than ice - Denser as it cools - Less dense as a solid (freezes) - Most substances are more dense as solid - Allows animals to live below floating ice - Otherwise, bodies of water would freeze over… 5) Seawater freezes at lower temperature than freshwater - Ex. swimming in really cold seawater 6) Ocean-Atmosphere interactions drive many current systems
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: - Organisms are re-circulated via wind-driven vertical mixing (Ekman Transport)- Many organisms migrate/ are dispersed by currents- Causes upwelling from Earth’s rotation and winds 7) Light attenuates in water (70 meters max in clear water).- Most of Ocean is dark- Life concentrated at surface- Senses other than vision are important- Dark ~ Cold (no isolation), average ocean temp = 4°C 8) Sound travels 4x faster & 1000x further in water 9) Air is more electrically resistive than water- Electro-sensory systems 10) Nutrient inputs are primarily from land- biomass concentrates on coasts – lots of light & &nutrients Coastal areas = Productive nursery areas Ex. salt marshes, kelp forests, and mangroves 11) Ocean has invisible, but real boundaries, separated by:- Light- Salt- Temperature- Currents 12) The Ocean is a “chemical sink”- Salts from land accumulate in the ocean- Ocean absorbs CO2 from the atmosphere...
View Full Document

  • Fall '08
  • Dr.ClaireHorner-Devine
  • Precipitation Physical Differences, average ocean temp, air-water interface traps, Feeding ex. whales, Ex. salt marshes

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern