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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. …
Peter Jansson's user avatar
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. …
Peter Jansson's user avatar
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. …
Peter Jansson's user avatar