I still continue to find ice needles compelling. (Kinda like fungi - they're here every year, but somehow they're always different.) Here's what I wrote last year:
Warm-ish days (slightly above freezing), cold nights, and plenty of ground moisture are the recipe for "ice needles" - thin needles or ribbons of ice rising up from the ground. (For a full discussion of ice physics and many astounding photos of this phenomenon, see an article by James Carter in the September-October 2013 issue of American Scientist, pages 360-369.)
Same idea, just some new photos.
 |
| Dirty needles emerging from a dusting of snow. |
 |
| These needles have a curled ribbon appearance. |
 |
| More needles |
 |
| A nice set of curly needles from yesterday's hike on the Appalachian Trail along Matts Creek near the James River footbridge. (See following post for more about that hike.) |
No comments:
Post a Comment