Water Quality Of Glaciers -Do We Want It?
Water quality is an important topic, since we all drink quantities of water over our lifetimes. Even if we drink only minimally, we still want top water quality.So what about the water quality of glaciers ?do we want it? Is the water quality of glaciers really pristine, as we are led to believe? Because of their frozen state, glaciers may have lower levels of contaminants and bacteria, but how low? One FDA investigator noted that, aside from marketability, glaciers are a rather imperfect water source, since animals traipse across them all the time, contributing contaminants and lowering water quality.I am not an expert on glaciers, but I do know that when Eklutna Glacier formed, however many years ago, its ice was not pure. Yes, its original snow was free of much contamination such as we know, but its snow was never chemically pure.
The True Water Quality of Glaciers
1. Each flake of glacial snow began as a small droplet of water or ice crystal that formed around a nucleus. The water needed a tiny particle around which it could condense. It might have used a microscopic salt crystal released into the air by an ocean wave. It might have used a particle of ash from a forest fire. It might have condensed around ash from a volcanic eruption, but each snowflake had to have that microscopic bit of material. Glacial water quality is affected by billions of old salt and ash particles.
2. Each flake of glacial snow helped scrub acids from the atmosphere. Acid rain is not new ?only industrial acid rain. The atmosphere contains about 350 ppm CO2, and ancient volcanic eruptions filled the atmosphere rapidly with more CO2. When our glacial snowflakes fell, they dissolved some of that CO2, and made carbonic acid snow. Glacial water quality is affected by icid rain?
3. Each flake of ancient glacial snow was further contaminated by animals. You have undoubtedly heard of wooly mammoths. You have heard, too, of migratory humans who likely hunted wooly mammoths. Can we believe that neither the ancient animals nor the hunters that stalked them ever walked on the glacier from which we are now urged to drink? As your parents may have told you, ever eat yellow snow. Glacial water quality is affected by yellow snow?
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