from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The uncovering of glaciated land because of melting or sublimation of the glacier.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The removal of all glacial land ice from a region, usually by melting.
from The Century Dictionary and Cyclopedia
- n. The withdrawal of ice from a previously glaciated region.
But the crux of the matter is the mysterious “fast atmospheric amplifier” of the CO2 etc. released during deglaciation, which is the old, unanswered question of what the CO2 sensitivity really is.
I will guess that the hypothesis is that the Earth enters a deglaciation period because of orbital parameters deglaciation occurs when the northern hemisphere winter is extra-cold and the northern hemisphere summer is extra-warm.
Historical factors such as deglaciation events and timing also figure prominently in determining biodiversity at higher trophic levels in these systems .
Scientists -- to society's peril -- don't know what triggers irreversible changes such as deglaciation, sea-level rise and extinctions.
Variations in CO2 of that scale make the difference between glaciation and deglaciation.
They clearly show the floors to the many different seas and its life forms, to tens of millions of years of mountain building and millions of years of wind and water erosion, glaciations and, finally, deglaciation.
It is important to remember that the decrease in biodiversity with increasing latitude that is a characteristic of arctic ecosystems is partly a consequence of the slow rate of dispersal of species into the Arctic following deglaciation.
Lentic records commonly extend back 6,000 to 11,000 years to the time of deglaciation in the circumpolar Arctic.
Excluding the initial transient alkaline period following deglaciation evident at some sites, the long-term natural rate of pH decline in the arctic lakes of the region is estimated to be approximately 0.005 to 0.01 pH units per 100 yr.
Glacio-isostatic adjustment is a response of the earth to loading and unloading by glaciers during the last major glaciation and the subsequent deglaciation.
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