Iceberg computer program is created

This is quite interesting news!! here it is!!

Iceberg computer program is created

STATE COLLEGE, Pa. (UPI) — U.S. scientists say they’ve created a computer program to help predict when icebergs will calve from ice sheets.

“The models we have do not currently have any way to figure out where the big ice sheets end and where the ice calves off to form icebergs,” said Penn State Professor Richard Alley.

The problem, he said, is the great variability involved in iceberg calving. One important variable — the one that accounts for the largest portion of when the iceberg breaks — is the rate at which ice shelves spread. When ice shelves spread, they crack because of the stresses of spreading. If they spread slowly, the cracks don’t propagate through the entire shelf and the shelf remains intact, he said. If the shelf spreads rapidly, the cracks propagate through the shelf, thereby causing calving.

“Spreading explains most of what is observed on the ice sheet,” said Alley. “However, the equations come out a little better if we include a few other things.”

The researcher determined the basic equation for ice calving is the rate of spreading, times the width of the shelf, times the thickness, times a constant. The researchers said that equation doesn’t capture the totality of variation in the ice calving process, but it does account for a large percentage of the variability.

The study appeared in the Nov. 28 issue of the journal Science.

Copyright 2008 by United Press International
subscribed from arcamax.com
Digg!

 
 

Leave a Reply

 

Resources

Hi dear friends and visitors!! thanks for visiting me here!! Have a great and blessed day!!




WANT TO EXCHANGE LINK WITH ME? READ HERE FIRST

Extras

All photographs used on this site, including thumbnails, are the Author's property and are ©copyright. Please do not use our photos without our permission. If you wish to use one of our photos on your personal website or blog, please send us the link to the page where it is being used and the photo must be linked back to this site. We hope that you respect the Authors' request. Thank you for your respect and understanding!

Copyright © 2013 Health, Food and Travel | All Rights Reserved

Blog Design by Simple Blog MakeOver