Seawater Properties

salinity

the total quantity of dissolved inorganic solid s in water

% of salt in water

85

Seawater is about blank % salt and blank % pure water

3.5, 96.5

surface water salinity range

33-37 ppt

brackish waters salinity range

< 25

Hypersaline waters

>40

how do inverts deal with salinity

osmoconformer

How do other animals deal with salinity

osmoregulator

osmoconformer

an organism that maintains an internal salinity that is similar to its environment

osmoregulator

an organism that controls the osmotic pressure of its body fluids

Does freezing make salinity go up or down

up

Does evaporation make salinity go up down

up

Does precipitation make salinity go up or down

down

does melting ice make salinity go up or down

down

CTD

conductivity-temp-depth

How can the ocean be <0

ocean is less prone to freezing

water temp in sea from

-2-30

thermocline

depth where large change

T or F colder on top warmer on the bottom

F

cold water blank dense

more

higher salinity blank dance

more

how is density determined

temperature, salinity, and pressure

stratification

the layering of the ocean according to density

T or F depths are denser and warmer

F

T or F surface is lighter and warmer

T

How do marine organisms get gas

O2, CO2, N2 are dissolved in water, from atmosphere

What holds more gas warm or cold water?

warm

volume _ on descent vol _ on ascent

decreases, increases