Chapt 6 Water & Ocean Structure

Chapt 6 Water & Ocean Structure - Chap 6 Water...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chap 6 Water & Ocean Structure Physical Oceanography Water and Heat Sun is exclusive source of energy driving ocean and atmospheric currents. The Sun radiates throughout the electromagnetic spectrum, but principle radiation is in visible part of the spectrum. Visible light is strongly absorbed by seawater Heat energy produced by random vibration of atoms or molecules. Temperature objects response to an input or removal of heat. Specific heat heat required to raise the temperature of 1 g of substance by 1 C. (calories / g) Infrared Energy in clear water, only 10% reaches 25 m, only 0.5% reaches 100 m, .0025% reaches 200 m essentially all energy gain in the oceans takes place in upper 10 -100 m of water Concept of Steady State Averaged over the globe and over a year, the Earth loses as much energy as it gains. Green house effect may be changing the steady state Energy Losses radiation (depends on atmospheric conditions, mainly humidity) ~41% conduction & convection (depends on wind, waves) ~6% evaporation (depends on humidity of air) ~53% This is the BIG ONE. Virtually all energy loss by oceans occurs in up few mm of water There is a net gain of energy at low latitudes and a net loss of energy at high latitudes. This latitudinal difference is energy gain and loss drives both ocean and atmospheric circulation. All energy exchange by the oceans occurs at the surface This exchange of energy controls the temperature of ocean water masses Density Mass / volume (g / cm 3 ) Density depends on temperature and salinity Ocean density ranges from 1.02 to 1.03 g/cc. Density differences, together with winds, are the principal factors determining ocean currents. Freezing Water Density curve (6.6) shows the relationship between the temperature or salinity of a substance and its density. Water density decreases as the water freezes...
View Full Document

This note was uploaded on 09/24/2011 for the course OCE 1001 taught by Professor Staff during the Spring '11 term at Broward College.

Page1 / 41

Chapt 6 Water & Ocean Structure - Chap 6 Water...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online