This is a wonderful graphic simply because it places the Earth's gross water content into the correct perspective when we look at other planets. It also informs us of one major inference. Any water rich comet that was sized toward perhaps a third of the Earth.s diameter could easily deliver all the waqter and organic volitiles needed to produce our present situation. The conjecture was always plausible but this illustrates it completely.
We also are provided with the raw numbers and that is useful to have at hand as well.
The take home is that our Earth is bathed with scant water. Yet that is the likely production of just one comet hitting us early on. This also suggests two other conjectures:
Such impacts are rare enough to limit the number of living planets in the Universe. However, terraforming Venus is a one step process that consists of correctly disturbing a Comet far out onto the correct orbit. Because i have good reason to think that Venus was artificially triggered by the same folks who saw our Ice Age off with the Pleistocene Nonconformity, there is good reason to suspect that such a comet has already been disturbed and is on its way.
If we can imagine doing this, it is my experience that it is already done. It may take thousands of years.
How much water is on Earth?
Spheres representing all of Earth's water, Earth's liquid fresh water, and water in lakes and rivers
Liquid fresh water
Water in lakes and rivers
Data source: Igor Shiklomanov's chapter "World fresh water resources" in Peter H. Gleick (editor), 1993, Water in Crisis: A Guide to the World's Fresh Water Resources (Oxford University Press, New York).
Sphere representing all of Earth's waterIf you just want an image of all water on, in, and above the Earth, here it is.
|Water source||Water volume, in cubic miles||Water volume, in cubic kilometers||Percent of|
|Oceans, Seas, & Bays||321,000,000||1,338,000,000||--||96.54|
|Ice caps, Glaciers, & Permanent Snow||5,773,000||24,060,000||68.6||1.74|
|Ground Ice & Permafrost||71,970||300,000||0.86||0.022|
|Source: Igor Shiklomanov's chapter "World fresh water resources" in Peter H. Gleick (editor), 1993, Water in Crisis: A Guide to the World's Fresh Water Resources (Oxford University Press, New York).|