properties of seawater 2 lec 8

true or false, salinity displays a latitudinal dependance

true

between what lats is salinity the highest

between 20N and 30S

why does water stratification occur

because high saline water floats on low saline water

what three things influence density

temp, salinity, and pressure

what is the heaviest water

cold and salty water

what is the lightest water

warm and fresh water

what is a pycnocline

a combination of halo and thermocline that measures density as a function of depth

what is satiuration value

the amount of gas at equilibrium that can be dissolved by a certain V of water

when salinity goes up solubility goes…

down, less space

when temperature goes up solubility goes…

down, particles are increasingly vibrating

when pressure goes up solubility goes…

up, water particles can bond better

how does oxygen enter the ocean

diffusion at surface, photosynthesis

when CO2 enters the ocean, it triggers a rapid reaction. carbonic acid is breifly created and then decomposes into H^+ and HCO3. what does this do to the acidity of the ocean?

lowers the Ph

what does photosynthesis do to the conc of CO2 in the ocean

lowers it

what does respiration do to the conc of CO2 in the ocean

increases it

why is the pH of the ocean relatively stable?

ocean is a goof buffer

what factors effect how much light is reflected from the ocean

height of sun, smoothness of surface

what percent of light is absorbed by teh ocean

65% of visible light

describe the biogeochemical system

a continuous recycling of elements between living and non-living matter between surface and subsurface water