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Questions related to the solid phase of water.
12
votes
Is there a name for this type of ice crystal?
This is needle ice which forms when moist soil freezes, for example during a cold night. … According to the National Snow and Ice Data Center (NSIDC) site needle ice be up to 40 cm in length. …
11
votes
How would an icicle "grow" upwards?
Ice can grow up from the ground in the form of needle ice. The formation requires sufficient moisture in the ground. … According to the National Snow and Ice Data Center (NSIDC) site needle ice can grow up to 40 cm in length. Needle ice are thin crystals of ice and has a very distinct look. …
12
votes
Accepted
Converting glacier volume to mass: what ice density to use?
First, you must differentiate between ice sheets where ice berg calving reduces volume and more ordinary glaciers with melt processes. … Super-imposed ice is closer to ice and probably varies in the upper range of 800--900 kg/m3.
To make matters worse, snow superimposes firn which in turn superimposes ice. …