Featured Research

from universities, journals, and other organizations

Sea Rise Over Continental Shelves Significantly Affected Past Global Carbon Cycle

Date:
January 5, 2009
Source:
American Geophysical Union
Summary:
Since the Last Glacial Maximum (LGM; about 21,000 years ago) sea level has risen by 130 meters (430 feet), resulting in continental shelf submergence and a massive expansion of the surface area of shelf seas.

Since the Last Glacial Maximum (LGM; about 21,000 years ago) sea level has risen by 130 meters (430 feet), resulting in continental shelf submergence and a massive expansion of the surface area of shelf seas.

Although shelf seas only account for 7 percent of the oceanic surface area, recent observations demonstrate that they host significant fluxes of carbon dioxide (CO2) between the ocean and atmosphere.

Further, dissolved and particulate carbon are thought to be transported from shelf areas into sinks in the deep ocean through a mechanism called the "continental shelf pump." Through reconstructions of shelf geography stretching to the LGM, Rippeth et al. analyze the effect of sea level rise and consequent flooding of continental shelves on the growth of the continental shelf pump.

Combining these reconstructions with contemporary estimates of carbon flux between the ocean and atmosphere allows the authors to conclude that expanding shelf seas have significantly influenced the global carbon cycle via the continental shelf pump, with weaker pumping during times when shallower shelf seas were present.



Story Source:

The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.


Journal Reference:

  1. Tom P. Rippeth et al. Impact of sea-level rise over the last deglacial transition on the strength of the continental shelf CO2 pump. Geophysical Research Letters, DOI: 10.1029/2008GL035880

Cite This Page:

American Geophysical Union. "Sea Rise Over Continental Shelves Significantly Affected Past Global Carbon Cycle." ScienceDaily. ScienceDaily, 5 January 2009. <www.sciencedaily.com/releases/2009/01/090102100236.htm>.
American Geophysical Union. (2009, January 5). Sea Rise Over Continental Shelves Significantly Affected Past Global Carbon Cycle. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2009/01/090102100236.htm
American Geophysical Union. "Sea Rise Over Continental Shelves Significantly Affected Past Global Carbon Cycle." ScienceDaily. www.sciencedaily.com/releases/2009/01/090102100236.htm (accessed July 24, 2014).

Share This




More Earth & Climate News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Observation Boat to Protect Cetaceans During Ship Transfer

Observation Boat to Protect Cetaceans During Ship Transfer

AFP (July 22, 2014) As part of the 14-ship convoy that will accompany the Costa Concordia from the port of Giglio to the port of Genoa, there will be a boat carrying experts to look out for dolphins and whales from crossing the path of the Concordia. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
New Orleans Plans to Recycle Cigarette Butts

New Orleans Plans to Recycle Cigarette Butts

AP (July 21, 2014) New Orleans is the first U.S. city to participate in a large-scale recycling effort for cigarette butts. The city is rolling out dozens of containers for smokers to use when they discard their butts. (July 21) Video provided by AP
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
Spectacular Lightning Storm Hits London

Spectacular Lightning Storm Hits London

AFP (July 19, 2014) A spectaCular lightning storm struck the UK overnight Friday. Images of lightning strikes over the Shard and Tower Bridge in central London. Duration: 00:23 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins