Sentences with phrase «ice lenses»
The phrase "ice lenses" refers to lenses made of ice. It means that a small, curved piece of ice acts as a lens, just like the lens in eyeglasses or cameras, to focus or magnify light. Full definition
The lack of ice lenses is also crucial to having a constant snow density.
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This is important information regarding the 1998 mass balance, because 7 - 11 % of the retained annual accumulation is typically in ice lenses.
«Very rarely ice lenses form directly beneath the kurgans,» explains Caspari.
In 1992 Russian archaeologists began a new search for ice lenses — and mummies.
This diagram of a cross-section through Titan's ice shell shows features that may explain the gravity anomaly: a low - density ice lens created by regional basal freezing; a rigid ice shell that resists upward deflection; and surface weathering that keeps topography small.
Occasional errors revealed by this cross-checking include ice lenses that do not represent the annual layer in the case of probing, or in crevasses which do not yield representative accumulation depth in the case of crevasse stratigraphy.
On Lemon Creek Glacier it has been noted that fewer ice lenses are forming (Miller and Pelto, 1999).
When the ice lens formed under the burial chamber, it expanded upward.
Before Parzinger opened his grave, the warrior had lain for more than 2,000 years on an ice lens, a sheet of ice created by water seeping through the grave and freezing against the permafrost below.
Within a few decades, the ice lenses may be completely gone.
This cross checking identifies measurement points that either represent an ice lens and not the previous summer surface in the case of probing, or areas where crevasses do not yield representative accumulation depth in the case of crevasse stratigraphy.
Since North Cascade glaciers rarely have ice lenses, an indicator of little internal accumulation, probing is an accurate method of measuring accumulation layer thickness.
On the Juneau Icefield, ice lenses are more common but are discontinuous and, thus, repeat measurement are often required to verify that the previous annual layer has been reached.
Since North Cascade glaciers rarely have ice lenses, probing is an accurate method of measuring accumulation layer thickness.
Scientists have recently discovered that, during spring melt - and - freeze cycles, massive «ice lenses,» as thick as 6 m, form just below the snow surface.