Navigation Links
Remote Siberian lake holds clues to Arctic -- and Antarctic -- climate change
Date:6/21/2012

Intense warm climate intervals--warmer than scientists thought possible--have occurred in the Arctic over the past 2.8 million years.

That result comes from the first analyses of the longest sediment cores ever retrieved on land. They were obtained from beneath remote, ice-covered Lake El'gygytgyn (pronounced El'gee-git-gin) ("Lake E") in the northeastern Russian Arctic.

The journal Science published the findings this week.

They show that the extreme warm periods in the Arctic correspond closely with times when parts of Antarctica were also ice-free and warm, suggesting a strong connection between Northern and Southern Hemisphere climate.

The polar regions are much more vulnerable to climate change than researchers thought, say the National Science Foundation-(NSF) funded Lake E project's co-chief scientists: Martin Melles of the University of Cologne, Germany; Julie Brigham-Grette of the University of Massachusetts Amherst; and Pavel Minyuk of Russia's North-East Interdisciplinary Scientific Research Institute in Magadan.

The exceptional climate warming in the Arctic, and the inter-hemispheric interdependencies, weren't known before the Lake E studies, the scientists say.

Lake E was formed 3.6 million years ago when a huge meteorite hit Earth, leaving an 11-mile-wide crater. It's been collecting layers of sediment ever since.

The lake is of interest to scientists because it has never been covered by glaciers. That has allowed the uninterrupted build-up of sediment at the bottom of the lake, recording hitherto undiscovered information on climate change.

Cores from Lake E go far back in time, almost 30 times farther than Greenland ice cores covering the past 110,000 years.

The sediment cores from Lake El'gygytgyn reflect the climate and environmental history of the Arctic with great sensitivity, say Brigham-Grette and colleagues.

The physical, chemical and biological
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Spectros Launches OnCall Wireless Remote Access for T-Stat
2. When the soil holds not enough phosphorus
3. UofL research holds promise of therapeutic approach for gum disease
4. Preserved frogs hold clues to deadly pathogen
5. Clues to nervous system evolution found in nerve-less sponge
6. Higher pain tolerance in athletes may hold clues for pain management
7. Relative reference: Foxtail millet offers clues for assembling the switchgrass genome
8. Researchers look to relatives for clues in quest to develop sources of bioenergy
9. Emperor penguins threatened by Antarctic sea ice loss
10. Increasing levels of carbon dioxide in Arctic coastal seas
11. Study: Seeping Arctic methane has serious implications for Florida coastline
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Remote Siberian lake holds clues to Arctic -- and Antarctic -- climate change
(Date:8/31/2014)... Warwick have discovered that ,good, cholesterol is turned ,bad, ... - MG, was found to damage ,good, HDL cholesterol, ... body. , Low levels of HDL, High Density ... levels of MG being common in the elderly and ... by funding from the British Heart Foundation (BHF) and ...
(Date:8/31/2014)... fast-sensitive "electronic-nose" for sniffing the highly infectious bacteria ... cramps, has been developed by a team at the ... research team has demonstrated that it is possible to ... which would lead to rapid diagnosis of the condition., ... be possible to identify different strains of the disease ...
(Date:8/31/2014)... are not busy attacking us, germs go after each ... spell disaster for the infected microbes: Sometimes viruses actually ... say, expand its diet or better attack its own ... an immune system would robotically destroy anything it recognized ... University have now revealed that one variety of the ...
Breaking Biology News(10 mins):Sugar substance 'kills' good HDL cholesterol, new research finds 2Scientists develop 'electronic nose' for rapid detection of C. diff infection 2Discovery reveals how bacteria distinguish harmful vs. helpful viruses 2Discovery reveals how bacteria distinguish harmful vs. helpful viruses 3
... of researchers led by Sharon Herring, MD, MPH, an ... University. She said, "Compared to normal weight women who ... gaining excessively during pregnancy were increased seven-fold among overweight ... they really did. Normal weight women who thought they ...
... Switzerland has shown that carbon nanotubes may be the ... in the advance online edition of the journal ... the search to find ways to "bypass" faulty brain ... like neurons, are highly electrically conductive, form extremely tight ...
... Researchers at the Max Delbrck Center for Molecular Medicine ... (Germany) have identified a gene which enables them to ... colon cancer is going to metastasize. Assistant Professor Dr. ... Birchmeier were able to demonstrate that the gene MACC1 ...
Cached Biology News:Who are you kidding? 2New 'smart' materials for the brain 2Newly identified gene powerful predictor of colon cancer metastasis 2
(Date:8/29/2014)... 2014 Three Lawrence Livermore researchers ... Hydrogen Production R&D Award for their research ... using sunlight. , Shared with collaborators from the ... of Nevada, Las Vegas (UNLV), the award recognizes ... photoelectrochemical solar-hydrogen production and corrosion processes. , These ...
(Date:8/29/2014)... A major challenge before new biotechnology start-up ... of Boston-Cambridge, is gaining visibility that can lead to ... Director of Boston’s Adult Stem Cell Technology Center, LLC ... of his company an important priority since he started ... a social media marketing campaign launched earlier ...
(Date:8/28/2014)... 28, 2014 SPIE Fellow Glenn Boreman, ... Optical Science and Director of the Center for Optoelectronics ... at Charlotte, and co-founder and Chairman of the Board ... the 2015 Vice President of SPIE, the international society ... Stahl announced recent election results at the Annual General ...
(Date:8/28/2014)... Best Sanitizers, Inc., the first company to ... asks food processors and food handling professionals to prepare ... currently using to Best Sanitizers’ Alpet® E3 Plus ... fighting cross-contamination and the spread of pathogens in the ... key criteria that make a hand sanitizer most effective, ...
Breaking Biology Technology:Livermore Team Awarded for Hydrogen Production Research 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3
... to detect and respond to magnetic fields is not ... some bacteria and various migratory animals, do respond to ... turtles, this behavior involves small magnetic particles in the ... they are actually doing is not fully understood. ...
... and LONDON, Feb. 28, 2012  Thomson Reuters announced ... a new capability that speeds access to critical life ... premiere life sciences platform, Thomson Reuters Cortellis. ... uses sophisticated application programming interfaces (APIs) to ...
... Genetics Policy Institute  (GPI) joined the Coalition for ... ("friend of the court") brief in the United States Court ... funding for human embryonic stem cell research. ... Court and in the Court of Appeals, the latter in ...
Cached Biology Technology:The laws of attraction: Making magnetic yeast 2The laws of attraction: Making magnetic yeast 3Thomson Reuters Cortellis Drives Drug Discovery and Development With Powerful New Web Services 2Genetics Policy Institute (GPI) Files Additional Legal Arguments in Sherley v. Sebelius Stem Cell Case 2
... Wellpro 384, compatible ... automated liquid handling system ... quickly and accurately prepares ... dilutions. The Wellpro ...
... a new generation bulk reagent dispenser offering ... for pharmaceutical and biotech laboratories. Based on ... Multidrop Combi has been designed for effortless ... l and multiple plate types including 1536. ...
384 well block MBSr. Robot compatible block ejection mechanism. Stackable. (384 well block - holds 384 well plate)...
... 45° Fixed Angle Rotor ... Centra CL2, Centra CL3CL3R, and ... concentration of sputum samples and ... samples. Provides individual aerosol containment. ...
Biology Products: