Rhapsodies of the Wise Old Bird
Monday, 23 February 2015
features in common to comets and snow
It was quite cold this morning when I went out - maybe near -20C with strong winds up to 40kmh. So why go out? Well, it is exhilarating and stimulating.
And it provides a control for erosion in snow aided by sublimation. I see it as an analogue to what is happening on 67P
One sees layers obviously. However, there is also quite a range in texture over quit short distances:
67P also shows smooth and rough surfaces adjacent.
In the above example "Cheops" was thrown several meters by a snowmobile and showed no evidence for rolling or breaking up. Had however, virtually no tensil strength. wob
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