By Mike Demuth
Becoming Water takes the reader on a travel of Canadas glaciers, describing the tales they inform and teaching the reader approximately how glaciers got here to be, how they paintings and what their destiny holds in our warming global. through vacationing Canadas low and high Arctic, and the mountain West, the reader will find out how diversified and intricate our glaciers fairly are, how they're measured and the way they determine into the nationwide and international tale of inevitable swap. The reader will discover ways to imagine like a scientist, particularly the best way to examine climate-related info that includes cycles, traits and shifts, after which reflect on what inquiries to ask within the face of our dramatically altering surroundings. This publication encourages Canadians to discover upstream from ourselves, studying approximately our origins and the way weather swap and encroaching human payment are tremendously impacting our glaciers and accordingly the traditional and human landscapes that lie below--and are based upon--them.
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Extra resources for Becoming Water: Glaciers in a Warming World
Devon Is. r te as nc Pond Inlet La Grise Fjord Resolute Bay North Kent Is. Eliz a b e th I sla nds Qu een land re Is sme e ll E Iqaluit La br ad or Se a Quebec Bay ava Ung coined by celebrated French glaciologist Louis Lliboutry. Glacier reservoirs have a geometry and placement on the landscape such that they do not flow from higher to lower elevations but rather are termed stagnant, with their volumes fluctuating only on account of losses or gains in the elevation of their surface – like a hydro power storage reservoir’s level would fall or rise.
42 during which glacier cover is very extensive on most continents in both hemispheres. Glacials themselves have periods of more or less cold corresponding to glacier limits that are more or less extensive – the warmer interval referred to as an inter-stadial. The WGE began about 110,000 years ago, reaching its greatest advance 21,000 years ago and ending about the same time as the Pleistocene epoch, around 12,000 years ago. The advance was encouraged by a period of cooling climate, in which the glaciers of the mountain West grew and coalesced to form broad mountain ice sheets that eventually conspired to form the Cordilleran Ice Sheet, covering most of British Columbia and southern Yukon and portions of Alaska, Montana, Washington and Alberta.
As warm air and absorbed radiation ripens the snowpack, water contained within it increases until it becomes saturated. At that point, the water can no longer be held in the pore spaces between the grains of snow; it must run off. The process of meltwater production, however, varies by location on the glacier. High in the accumulation area, for instance, the bulk of the snow cover may still be well below zero when the shortwave radiation associated with the intense melting of spring begins its work.
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