Friday, February 15, 2019

Antarctica Ice Melt

from a youtube comment:

When all the ice melts in Antarctica, the oceans will rise by about 400 feet. The calculation is easy to do: 1. The ice in Antarctica varies from 0.5 mile to 1.5 miles in depth (thickness). Assume a uniform thickness of one mile (5280 feet). Antarctica land mass covers 5% of the surface area of the Earth. The oceans cover about 66% of the surface area of the Earth. So: 5280 x .05 = "Y" x .66 Where "Y" is the sea level rise in feet "Y" = 400 feet.

In Los Angeles, for example, Hollywood Blvd is consistently at 400 feet above sea level. Griffith Park is 800 feet above sea level. Most property between Hollywood Blvd and the ocean will be flooded.

 One interesting consequence of the ice melting in Antarctica is the entire continent of Antarctica will raise. The ice is so heavy that the crust of the Earth is deformed downward toward the center of the Earth by half a mile. When the ice melts, Antarctica will rise. Additionally, ten of the world's largest volcanoes are under the ocean off of Antarctica. The release in ice pressure will likely make those volcanoes erupt. This will cause further melting of ice and speed up the entire process.

 Here is a link for more info: https://www.nsf.gov/pubs/1997/antpanel/3enviro.htm


copyright (c) 2019
William Schaeffer

No comments:

Post a Comment