English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

2006-09-18 05:09:10 · 18 answers · asked by catorkitten 1 in Education & Reference Homework Help

18 answers

A mild 72 degrees F

2006-09-18 05:10:29 · answer #1 · answered by Anonymous · 1 2

This is a rather dense text but shows that the Arctic Ocean and the ice around the north pole is not saltwater, but freshwater. Yes it's true that saltwater will freeze at a lower temperature than freshwater (which is why people are saying that it's less than 0 degrees) but the north pole is not surrounded by saltwater.

2006-09-18 05:35:41 · answer #2 · answered by Iknowsomestuff 4 · 0 0

Temperature

Both air and sea temperature are vital for the freeze/melt processes. Ice will form if air temperature is lower than the freezing point of the water below. The greater the temperature gradient between air and sea is, the more efficient the heat transfer. If the difference between air and water is not large enough, heat conduction within the water column itself will keep the surface water from freezing.

Salinity

Surface salinity is also of importance. Freshwater freezes more easily than salt water - zero salinity requires a temperature of zero degrees Celsius, whereas "normal" sea water with salinity around 34 psu (practical salinity units, comparable to parts per mille (thousand)) must be cooled down to almost -2 Degrees C. Areas with large amounts of excess melt-water from the previous season, or extensive freshwater input from rivers and precipitation are well disposed for ice production. In the central Polar Seas, a deep layer of freshwater also tends to isolate the sea ice from warmer water below.

Wind

Wind is another crucial factor. Strong winds enhance the effectivity of heat exchange across the air-sea interface. Wind forcing also transports ice away from the freezing areas, allowing for more ice to be produced efficiently. When sea ice is pushed together by convergent wind fields, ridges are formed. This way, the ice becomes thicker than by freezing alone. Mean thickness of up to 7-8 meters is observed north of Greenland/Eastern Canada. Wind is also responsible for moving ice out of the Polar Sea and into regions of higher temperature, where it melts.

2006-09-20 07:01:23 · answer #3 · answered by Chariotmender 7 · 0 0

there could possibly be some water within the ice at the north pole which would be around freezing point

2006-09-18 05:19:08 · answer #4 · answered by Anonymous · 0 0

Freezing

2006-09-18 05:12:14 · answer #5 · answered by Gabba 2 · 0 0

most water turns to ice at 0 degrees ( Celcius )
but salt water, specifically moving salt water can be below the freezing point

2006-09-18 05:18:15 · answer #6 · answered by bigs 2 · 0 0

The part that isn't frozen (i.e. under the ice cap) is just below freezing. 27 - 30 F

The pressure and salt allow it to get below 32F, which is the normal freezing temp for fresh water.

2006-09-18 05:16:44 · answer #7 · answered by Morey000 7 · 1 1

trick question,there is no water at the north pole ! its all ice.

2006-09-18 05:11:18 · answer #8 · answered by Alfred E. Newman 6 · 0 1

33 degrees F.

2006-09-18 05:23:37 · answer #9 · answered by Billy! 4 · 0 0

About 0c or 32 f

2006-09-18 05:17:11 · answer #10 · answered by Anonymous · 0 1

fedest.com, questions and answers