Introduction, physical properties and conservation Part 2. Flashcards
What type of water is more dense?
cold and salty
What are global motors?
for the exchange of large masses of water
What are the 3 important contents of seawater?
Clorine, sodium, Magnesium
What is Forchhammer’s Principle?
Principle of Constant Element Ratios:
What does Forchhammer’s principle work?
Ratios between many major elements are constant all over the ocean, even though salinity varies
Does Forchhammer’s principle apply to elements that cycle rapidly?
Principle does not apply to elements that cycle rapidly, especially under influence of biological processes (e.g., nitrogen, phosphorous)
Why does Forchhammer’s principle work?
residence time of elements with constant ratios is much greater than time to mix them evenly throughout ocean by water currents
What is residence time?
is the average time that a unit weight of a substance spends in the ocean before it is lost to sediments or to the continents.
What is the equation for residence time?
residence time =n/dn/dt
Why is the ocean so well mixed
Residence time of water is on order of thousands of years
How does oxygen enter the water?
Diffusion,photosynthesis, and artifically
How does diffusion work?
Atnospheric oxygen VIA mixing of waves, wind, and currents
How does photosynthsis work in the ocean?
oxygen production is from seagrass, algae and phytoplankton
How does oxygen enter aritifcally?
water from a dam,aerators, amd fountains
What is the cause of ocean degradtion?
overpopulation
