Navigation Links
Ancient glacial melting process similar to existing concerns about Antarctica, Greenland
Date:8/1/2011

CORVALLIS, Ore. An analysis of prehistoric "Heinrich events" that happened many thousands of years ago, creating mass discharges of icebergs into the North Atlantic Ocean, make it clear that very small amounts of subsurface warming of water can trigger a rapid collapse of ice shelves.

The findings, to be published this week in Proceedings of the National Academy of Sciences, provide historical evidence that warming of water by 3-4 degrees was enough to trigger these huge, episodic discharges of ice from the Laurentide Ice Sheet in what is now Canada.

The results are important, researchers say, due to concerns that warmer water could cause a comparatively fast collapse of ice shelves in Antarctica or Greenland, increasing the flow of ice into the ocean and raising sea levels. One of the most vulnerable areas, the West Antarctic Ice Sheet, would raise global sea level by about 11 feet if it were all to melt.

"We don't know whether or not water will warm enough to cause this type of phenomenon," said Shaun Marcott, a postdoctoral researcher at Oregon State University and lead author of the report. "But it would be a serious concern if it did, and this demonstrates that melting of this type has occurred before."

If water were to warm by about 2 degrees under the ice shelves that are found along the edges of much of the West Antarctic Ice Sheet, Marcott said, it might greatly increase the rate of melting to more than 30 feet a year. This could cause many of the ice shelves to melt in less than a century, he said, and is probably the most likely mechanism that could create such rapid changes of the ice sheet.

To find previous examples of such events, scientists reconstructed past ocean temperatures and used computer simulations to re-create what probably happened at various times during Heinrich events of the distant past. It had been known for some time that such events were associated with major climate changes,
'/>"/>

Contact: Shaun Marcott
marcotts@science.oregonstate.edu
541-737-1248
Oregon State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Endangered river turtles genes reveal ancient influence of Maya Indians
2. Genetic switch for limbs and digits found in ancient fish
3. Ancient symbiosis between animals and bacteria discovered
4. Ancient species of mayfly had short, tragic life
5. Adjustable valves gave ancient plants the edge
6. Significant role of oceans in onset of ancient global cooling
7. Scientists discover fossil of giant ancient sea predator
8. Battle scars found on an ancient sea monster
9. Cold case: Siberian hot springs reveal ancient ecology
10. Fossil sirenians give scientists new look at ancient climate
11. Reptilian root canal: U of T Mississauga study reveals infection in jaw of ancient fossil
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/15/2014)... As our ability to assess the pandemic risk from ... developments, we must not allow ourselves to become complacent ... an international consortium of scientists. , Influenza pandemics arise ... have yet to develop widespread immunity – spreads in ... in the past 100 years, the worst of which ...
(Date:10/15/2014)... resistance to bacterial pneumonia in female mice to an ... Females are naturally more resistant to respiratory infections than ... that increased resistance to bacterial pneumonia in female mice ... (NOS3). They also show that this enzyme is ultimately ... estrogen. , The team, lead by Professor Lester Kobzik ...
(Date:10/14/2014)... DURHAM, N.C. – Like discriminating thieves, prostate cancer tumors ... in the body. But such avarice may be a ... found a way to kill prostate cancer cells by ... that selectively destroys the diseased cells brimming with the ... which uses two drugs already commercially available for other ...
Breaking Biology News(10 mins):Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2Prostate cancer's penchant for copper may be a fatal flaw 2
... of the travels of the malaria parasite Plasmodium through ... found the parasites developing in an unexpected place: the ... nodes almost certainly has implications for the mammalian immune ... (HHMI) international research scholar who led the study. ...
... A new experiment has shed more light on the multi-decade debate ... them. , You don't have to watch your legs and feet ... scientists have debated two options for how the brain achieves this: ... it sends to the muscles telling them how strongly to contract, ...
... bone-marrow derived stem cells can regenerate damaged renal cells ... potential new strategy for managing this inherited kidney disease ... may be useful in repairing basement membrane matrix defects ... at Beth Israel Deaconess Medical Center (BIDMC), the findings ...
Cached Biology News:Malaria parasites develop in lymph nodes 2Malaria parasites develop in lymph nodes 3How does the brain know what the right hand is doing? 2New research demonstrates bone-marrow derived stem cells can reverse genetic kidney disease 2
(Date:10/19/2014)... October 19, 2014 According to ... (Access Points; WLAN Controllers; Wireless gateways)]- Global Advancements, ... segments the global Outdoor Wi-Fi market with analysis ... report MarketsandMarkets also identifies the drivers and the ... the trends, opportunities and challenges. , Browse 65 ...
(Date:10/18/2014)... 2014 The report "1,6-Hexanediol Market ... Forecasts to 2019", analyzes the global market on ... understand the industry details such as the key ... geographic regions. , Browse 81 Market Data Tables ... in-depth TOC on “1,6-Hexanediol Market by Application and ...
(Date:10/18/2014)... Asia-Pacific Liquid Crystal on Silicon (LCoS) display market report ... analysis and forecast of revenue. This market was valued ... reach $380.0 million by 2018, at a CAGR of ... TOC of the Asia-Pacific LCoS display market report, to ... also provides a glimpse of the segmentation of the ...
(Date:10/18/2014)... 18, 2014 According to a new ... Well Type - Global Trends & Forecasts up till ... billion in 2011. This value is expected to increase ... 2017, with 10% CAGR during the same period. North ... production market in terms of hydraulic horse power supplied ...
Breaking Biology Technology:Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4
... doubt, let me assure you that DEMOletter blog readers are ... space to any reader who had a perspective, opinion, or wild-eyed ... responded. And it seems even Jim prefers the safety of ... edited by me. , ,Most of you, I suppose, were clever ...
... With the support of a local equity investor, an early-stage ... and it is intent on marketing its games to major ... Nintnedo . , ,Selling its products to the "big ... Codebase Productions, LLC and its president, Ben Geisler, but ...
... Waukesha, Wis. - GE Healthcare , the ... will provide the Translational Genomics Research Institute ... with advanced imaging equipment for drug discovery and development. ... genomics technologies to accelerate research in translational genomics, a ...
Cached Biology Technology:The DEMO Summer Reading List 2The DEMO Summer Reading List 3Emerging game developer begins work on prototypes 2GE Healthcare partners with genomics institute 2
... Oct6 ( Abpromise for all tested applications). ... to KLH derived from within residues 1 - ... acid sequence is proprietary) (Peptide ... Entrez Gene ID: 5453 ...
ATP-binding cassette sub-family D member 4 (Peroxisomal membrane protein 69) (PMP69) (Peroxisomal membrane protein 1-like) (PXMP1-L) (P70R). [Source:Uniprot/SWISSPROT;Acc:O14678] Antigen: Recombi...
... The HEEBO (Human Exonic Evidence Based Oligonucleotide) ... Based Oligonucleotide ) Genome Set contain a ... derived from constitutively expressed exons, allowing interrogation ... with leading researchers at Stanford University and ...
Rabbit polyclonal to XPC ( Abpromise for all tested applications). Antigen: Synthetic peptide from N-terminus of Human XPC conjugated to a carrier protein Entrez Gene ID: 7508 Swiss ...
Biology Products: