Melt Ponds

[binntho]

Indeed, one is suffused by a gratifying feeling of of being fully informed. Thanks.

[interstitial]

The bulk of ice forms with vertical growing ice crystals this plus the exclusion of salt tends to create channels through the ice. If the ice is thicker than 2 meters it is likely stacked but that process has some gaps between layers. The freeze melt cycle will over seasons fill these channels. Freshwater ice is more solid and would not have channels to drain through.

freshwater ice most definitely can be porous and saturated with water, whether waterfall or glacier ice

My mistake I was using freshwater to indicate multiyear sea ice.