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.
Basalt
Obsidian
Magma is molten material that when cooled forms a solid called igneous rock
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.
well to be 100% honest, a surface current is basically a current on the surface. This particular current moves in a stream-like fashion on the surface of the ocean. A surface current can be short, wide, deep, or narrow.
deep current!
Density currents - more dense seawater sinking beneath less dense seawater.
magma, but when its on the surface lava
SubductionThe Magma Forms And Makes A Volcano
SubductionThe Magma Forms And Makes A Volcano
Intrusive
The rock that forms on earth's surface is extrusive rock or otherwise known as a metamorphic rock.
the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater
the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater
intrusive
Are those that forms beneath the earth surface
the answer to this question is a density current forms when more dense seawater sinks beneath less dense seawater