The removal of 1 or 2 feet of the upper moss and soil put the bottom of the ditch into a mixture of ground ice and muck, much of which was almost clear ice.
22.
ESP 042765 2245cracks . jpg | Small and large cracks, as seen by HiRISE under HiWish program The small cracks to the left will enlarge to become much larger dues to sublimation of ground ice.
23.
Like a medieval market, an entire community of suppliers and provisioners has grown up around the market, selling knives, hooks, boots, weighing scales, gloves and the tons of ground ice which the market goes through every day.
24.
The upper part of the Saalian sediments, which lie uncomfortably on the eroded surface of the lower Saalian ice complex deposits, consists of well-sorted fine-grained sand that contains pollen characteristic of sparse grass-sedge dominated interstadial vegetation and less ground ice.
25.
The "'National Snow and Ice Data Center "', or "'NSIDC "', is a United States information and referral center in support of snow cover, avalanches, glaciers, ice sheets, freshwater ice, sea ice, ground ice, permafrost, atmospheric ice, paleoglaciology, and ice cores.
26.
Contrary to most near-surface environments on Mars, one of the most appealing aspects of studying Martian ground ice is its potential to contain organic biomarkers, biomolecules or biosignatures that may be preserved and protected for extended periods of time from UV, ionizing radiation and oxidants.
27.
It was named after physicist Christopher P . McKay, of the NASA Ames Research Center, Moffett Field, California, who carried out investigations in the McMurdo Dry Valleys concerning micrometeorology, thickness of ice in frozen lakes, stability of ground ice, in 15 austral summers beginning in about 1980.
28.
It consists in ground ice which is thick and topped with juices of different flavors that can be combined, regularly the most common flavors are pineapple and strawberry juices but it can also be served with berries juice, passion fruit juice ( maracuya ), chicha morada ( purple corn juice ), and in some cases but uncommon it can be topped with condensed milk or yogurt.
