facebook
twitter
rss
account
search
search
 

Sea level rise since Industrial Revolution greater than in the past

Dec. 12, 2013 at 6:26 PM   |   Comments

SOUTHAMPTON, England, Dec. 12 (UPI) -- Sea-level rise since the Industrial Revolution has been faster than normal, natural processes would create, British and Australian scientist say.

At current rates heights may reach 30 inches above the modern level by 2100 and 8 feet by 2200, researchers from the University of Southampton and the Australian National University reported Thursday.

The scientists used geological evidence of the past few million years to derive a background pattern of natural sea-level rise, then compared that with historical tide-gauge and satellite observations of sea-level change for the "global warming" period since the industrial revolution.

"Historical observations show a rising sea level from about 1800 as sea water warmed up and melt water from glaciers and ice fields flowed into the oceans," said Gavin Foster of Southampton's National Oceanographic Center. "Around 2000, sea level was rising by about three mm per year. That may sound slow, but it produces a significant change over time."

The natural background pattern allowed the researchers to see whether recent sea-level changes are exceptional or within the normal range, and whether they are faster, equal, or slower than natural changes.

"For the first time, we can see that the modern sea-level rise is quite fast by natural standards," Eelco Rohling of the Australian National University said. "Based on our natural background pattern, only about half the observed sea-level rise would be expected."

© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Most Popular
1
Android phones to join iPhone in saying no to the police Android phones to join iPhone in saying no to the police
2
Perth's first iPhone buyer immediately drops brand new phone on live TV Perth's first iPhone buyer immediately drops brand new phone on live TV
3
NASA launches project to get citizens involved in Mars exploration NASA launches project to get citizens involved in Mars exploration
4
Tuna fishermen are not happy about proposed marine sanctuary Tuna fishermen are not happy about proposed marine sanctuary
5
Dogs are the favorite food of leopards in rural India Dogs are the favorite food of leopards in rural India
Trending News
Video
x
Feedback