crzykllrghst

Translate:

Potassium iodide (T^2/T^4)(1/Y)^-1

No not right now, but there easliy made on your own though

M(2.99 x 10^8)R^2(1/Y)^-1

X (force/acceleration)

`Here is a summary of what’s been said' date=' with a couple of extra points thrown in. Ocean currents are driven by two factors:

1. Winds

2. Density contrasts (related to temperature and salinity)

They are modified by the Coriolis force.

 

There are surface currents and deep currents. Lets look at the surface currents first.

 

These are driven primarily by wind. They form five major circulating systems called gyres. There are two in the Atlantic (North and South), the Pacific (North and South) and one in the Indian Ocean. They rotate clockwise in the Northern hemisphere and anti-clockwise in the Southern, driven by the prevailing winds. (The Indian Ocean current is unusual in that it reverses direction from summer to winter under the influence of the monsoon.) They carry warm waters from the equatorial regions towards high latititudes and cold water back towards the equator. They rarely run any deeper than about 100m, so they effect only a small volume of the total ocean.

 

The deep currents replace the waters of the deep oceans over a time scale of hundreds of years. They are driven primarily by density contrasts. The most important of these begins between Scotland and Greenland, where the descending cold waters of the North Atlantic Drift (the extension of the Gulf Stream) begin moving south down the Atlantic. They join the deep Antarctic circumpolar current that runs clockwise around that continent, before turning north in the Pacific and heading for the Aleutians, between Asia and North America. Here they surface and become part of the surface circulation pattern.[/quote']My god you are smart you must have a PHd or something

he might not be sure... but I am. Albedo is indeed the amount of sunlight reflected...by snow, clouds. Whatever.

cool thanks

Salinaty measures the concentration of salt that you find in the water. The salinaty of the water affects the density, and due to the fluid dynamics you get faster moving streams of water.

Much clearer thank you

I believe it measures the amount of solar radiation that is reflected away from the planet.

Not to be rude but how sure are you?

He just strikes me as a bit odd, really.

lol your right

Not always.

 

Salinaty is the reason that we have a gulf stream' date=' and hence the reason why melting non saline ice caps, would cause a problem.[/quote']

Can you explain why the gulf stream is different

Salinaty?????

Convection cells caused by heat differences drive the deep oceanic currents.

Like a boiling pot of water? cooler water from the surface "sinks" and the warmer water rises to the top, the water at the top cools and sinks again, and now you have a convection current. but that wouldn't work can someone explain how convection currents could exsit in the oceans

Some links:

 

University of Berkley site on the Pleistocene. Brief' date=' focusing on animals, but has some interesting links:

http://www.ucmp.berkeley.edu/quaternary/ple.html

 

This site focuses on the current Ice Age:

http://museum.state.il.us/exhibits/ice_ages/

 

This is a nice summary of the Quaternary period:

http://qra.org.uk/what.html

 

A nice summary of some of the theories on causes:

http://www.sentex.net/~tcc/iceage.html

 

A word of warning. I just quickly googled these. They are reliable, but there are a lot of links that are nonsense. Watch out for them.

 

 

And Aardvark, yes the film was silly, but it could initiate an ice age thus:

• Temperature rises
  
• Oceanic evaporation increases
  
• Precipitation increases
  
• In high latitudes and at high altitudes this falls as snow.
  
• Ice thickness increases
  
• Glaciers and ice caps advance
  
• Albedo increases
  
• Global temperature drops
  

Edit: By the way CrazyKillerGhost you will have a ringside seat in Chicago if the glaciers head south in your lifetime.

What is Albedo?

Thank you everyone for the input, althought i had to read it 4 times before it all settled in properly. One more question, the interglacial time we are in, is cooling towards and ice age of is it going the other way. Oh and Ophiolite I'll be sure to get you some good pictures. lol

How are you defining "terminal velocity?"

the maxmium speed of an object in a vacuum caused by gravity's "pull"

Thanks crzykllrghst do you think eventually gravity could be stored to propel a mass object? I don't know how this might work but does it sound feasible for future travel in space? maybe gyro-scopically controlled by use of magnetism & gravity like our first flying saucer? Or does this seem outrageous?...us.2u

For the times, it seems outrageous, but I dont know what the future my hold for travel.

In trems of terminal velociy, gravity could be "faster" so to speak. Gravity's terminal velocity depends on the amount of mass a subject has, such as pen on your desk, it's terminal velocity is nearly zero, and the earths is seven f/s, and a black holes is greater than the speed of light(2.988 x 10^9 m/s I think correct me if i'm wrong)

The earth rotates, but, the winds are still travelling straight (velocity moves tangent to an object in rotation) The wind has an apperent deflection to the right in the northern hemisphere, to the left in the southern hemisphere

That is a good site thank you

Thank You

 

Ps: I can't believe I forgot to put up links to back myself up! Here are some links that I just found to provide backing to this info!

http://www.alternet.org/story/17711

http://oceanworld.tamu.edu/resources/ocng_textbook/chapter13/chapter13_01.htm

http://www.eduspace.esa.int/eduspace/Background/default.asp?document=243

Nope' date=' you right. It's called the Coriolis affect. It's reponsible for the deflection of the winds, and currents. read more

http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fw/crls.rxml[/quote']

wind deflection

The undersea currents... not the surface currents.

 

Inside the ocean there are these deep sea currents that's movement is caused by temperature density differences. These currents move independantly' date=' and are unaffected by surface currents (the one's caused by wind)

 

These currents bring warm water up the the noth, warming up the region, and cool water to the tropical region. Extreme global warming could disprupt this deep current, by causing temp. differences to change, and the current to stop circulating.

 

This would stop the warm water being brought up to the north, creating a huge temperature drop, and possibly starting another ice age.[/quote']Wow you good at explaining this stuff thank you

The wind drives currents. If you take a look at a map of the winds' date=' you'll see there in exactly the spots over ocean currents.

 

What drives the wind...Air pressure differences, as a result of solar insolation.

 

You should check out the National Oceanographic and Atmospherica Administration's website, http://www.noaa.gov for more info.[/quote']thank you for the input, but what bugs me is i heard that earths rotation had something to do with the currents. is that a myth or is ther some truth there

Global warming can trigger an ice age... The science in the "Day after Tommorow" movie does have truth behind it.

so a balence of fresh and salt water in the oceans controls the currents

In short' date=' try to save energy, reduce waste of it, help rescue trees in forests so as to avoid a more serious global warming which will lead to a extinction of human beings.

 

[Edit'] I forgot something. Throw away your cooling machines, air conditioners. Stopping using aerosol to style our hair.

You didn't answer the question. I know how we can slow global warming already

When could the next ice age begin, and what would cause it. Any links and inout would be appreciated

Hey everyone, I'm really into meteorology and oceanograhy, and one question thats pluged me lately was ocean currents. I dont know how they were formed of what keeps them moving. Any input or links would be greatly appreciated

Many areas . Thermodynamics , reaction kinetics , electrochemistry , quantum mechanics ------