{"id":3888,"date":"2019-11-30T11:27:53","date_gmt":"2019-11-30T16:27:53","guid":{"rendered":"https:\/\/langa.com\/?p=3888"},"modified":"2019-11-30T13:40:15","modified_gmt":"2019-11-30T18:40:15","slug":"needle-ice-on-waitts-mount","status":"publish","type":"post","link":"https:\/\/langa.com\/index.php\/2019\/11\/30\/needle-ice-on-waitts-mount\/","title":{"rendered":"‘Needle Ice’ on Waitts Mount"},"content":{"rendered":"\n

Needle ice<\/a> <\/strong>forms when the temperature of wet earth is above freezing, but the air is dry and below freezing.<\/p>\n\n\n\n

The liquid water in the soil wicks to the surface via capillary action through small pores and cracks, where it freezes on contact with the cold air; it expands and forms a small ice cap atop the pore or crack. As more liquid water arrives from below, it also freezes and expands, pushing the previously-formed ice upward.<\/p>\n\n\n\n

If the process goes on overnight, it can grow needle-like ice columns or mini-stalagmites that make for very crunchy walking!<\/p>\n\n\n\n

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Waitts Mount<\/a>, Nov 30, 2019<\/strong><\/em><\/figcaption><\/figure><\/div>\n\n\n\n