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Sea ice formation is complicated for several reasons, but to answer your question (I think), there really isn't a change in density of the water below the ice.
When it initially forms, much of the salt in the sea water becomes frozen in the nascent sea ice (and can take years to drain out). The small change in salinity of the water right below the ice would balance itself by convection in the uppermost layer of the ocean. Obviously, if the sea ice is going to float then it's going to be less dense than any of the water beneath it.
What else can I help you with?
What is a igneous rock that forms when magma solidifies beneath the earths surface?
Obsidian
What forms when molten material from beneath Earth's surface cools and hardens?
When molten material from beneath Earth's surface cools and hardens, it forms igneous rocks. Igneous rocks can be either intrusive (formed underground) or extrusive (formed on the surface), depending on where the cooling and hardening process occurs.
Magma is molten material that forms .?
Magma is molten material that when cooled forms a solid called igneous rock
What do you call a rock that forms when magma hardens beneath earth's suface?
The rock that forms when magma hardens beneath the Earth's surface is called an intrusive igneous rock. Examples include granite and diorite.
Intrusive igneous rocks form when hardens and cools beneath Earth and surface.?
The substance that cools beneath the earths surface when an intrusive igneous rock forms is Magma. Magma is a molten material made up of rocks and minerals.
When ocean water near the surface becomes dense enough to sink it forms what kind of current?
deep current!
How density current forms?
Density currents - more dense seawater sinking beneath less dense seawater.
What is melted rock that forms beneath the earth's surface?
magma, but when its on the surface lava
What process occurs when a more dense plates sink beneath a less dense plate?
SubductionThe Magma Forms And Makes A Volcano
What is the igneous rock that forms beneath earth's surface?
Intrusive
What forms beneath earths surface?
The rock that forms on earth's surface is extrusive rock or otherwise known as a metamorphic rock.
Why do ponds freeze from bottom to up?
Ponds freeze from the top down because ice is less dense than water, so it forms a layer on the surface and continues to grow downward. This is because as water cools, it becomes denser until it reaches its freezing point, at which point it expands and becomes less dense as ice. Therefore, the ice layer forms on the surface and gradually thickens as the temperature drops.
What causes the density in the mediterranean sea?
the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater
What causes the density current in the mediterranean?
the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater
Where are cool rocks located?
Are those that forms beneath the earth surface
What type of igneous rock forms beneath the surface of the Earth?
intrusive
What cause the density currents in the Mediterranean sea?
the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater
