Navigation Links
Sediment yields climate record for past half-million years
Date:6/15/2009

COLUMBUS, Ohio Researchers here have used sediment from the deep ocean bottom to reconstruct a record of ancient climate that dates back more than the last half-million years.

The record, trapped within the top 20 meters (65.6 feet) of a 400-meter (1,312-foot) sediment core drilled in 2005 in the North Atlantic Ocean by the Integrated Ocean Drilling Program, gives new information about the four glacial cycles that occurred during that period.

The new research was presented today at the Chapman Conference on Abrupt Climate Change at Ohio State University's Byrd Polar Research Center. The meeting is jointly sponsored by the American Geophysical Union and the National Science Foundation.

Harunur Rashid, a post-doctoral fellow at the Byrd Center, explained that experts have been trying to capture a longer climate record for this part of the ocean for nearly a half-century. "We've now generated a climate record from this core that has a very high temporal resolution, one that is decipherable at increments of 100 to 300 years," he said.

While climate records from ice cores can show resolutions with individual annual layers, ocean sediment cores are greatly compressed with resolutions sometimes no finer than millennia

"What we have is unprecedented among marine records."

Dating methods such as carbon-14 are useless beyond 30,000 years or so, he said, so Rashid and his colleagues used the ratio of the isotopes oxygen-16 to oxygen-18 as a proxy for temperature in the records. The isotopes were stored in the remains of tiny sea creatures that fell to the ocean bottom over time.

When the researchers compared their record of past climate from the North Atlantic to a similar record taken from an ice core drilled from Dome C in Antarctica, they found it was remarkably similar.

"You can't miss the similarity between the two records, one from the bottom of the North Atlantic Ocean and the other from Antar
'/>"/>

Contact: Harunur Rashid
rashid.29@osu.edu
614-292-5040
Ohio State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Soil and sediment contamination assessment more accurate
2. Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil
3. Sedimentary records link Himalayan erosion rates and monsoon intensity through time
4. Paleozoic sediment curve provides new tool for tracking sea-floor sediment movements
5. Cataloguing invisible life: Microbe genome emerges from lake sediment
6. UNH researchers test sediment-scrubbing technology in NH river
7. Smithsonian study: Sediment prediction tools off the mark
8. Hot springs microbes hold key to dating sedimentary rocks, researchers say
9. Research yields potential target for cancer, wound healing and fibrosis
10. Greatest thing since sliced bread: New data offer important clues toward improving wheat yields
11. Mixing genomics and geography yields insights into life and environment
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/26/2015)... The Granite Club, Canada,s ... announced it has implemented a state-of-the-art access and security ... and staff, while restricting access to authorized users only. ... IMID Access system because it has the perfect combination ... in addition to unparalleled security," said James DiRenzo ...
(Date:3/24/2015)... March 24, 2015   Crossmatch ™, a ... announced that its U.are.U ® 4500 Fingerprint ... Goorin Bros . to achieve PCI compliance for ... access to the POS terminal, protecting the retailer ... data breaches. With one-third of ...
(Date:3/23/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... mobile commerce market, announces its biometric payment technology, the Wocket® ... television starting March 30 th . ... New York markets. ... about our new ad campaign following the recent initial shipment ...
Breaking Biology News(10 mins):Granite Club First Private Club in North America to Implement FST Biometrics Secure Access Solution, as Part of Multi-million Dollar Expansion 2Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3
... W. Finberg, MD, the Richard M. Haidack Professor of ... University of Massachusetts Medical School, is lead investigator on ... predicting how the influenza virus changes and evolves in ... This approach has promise for becoming a pivotal tool ...
... than 3,000 hybrid fish in his time as a graduate ... that has helped him create one of the most comprehensive ... key prediction in evolutionary biology. "We can see a ... new specialized species," said Martin, who with Professor Peter Wainwright ...
... crops such as miscanthus, whose high yields have led ... in producing ethanol, are now shown to have another ... in the environment. In a 4-year University of Illinois ... to typical corn-corn-soybean rotations, each of the perennial crops ...
Cached Biology News:A snapshot of pupfish evolution in action 2Lower nitrogen losses with perennial biofuel crops 2Lower nitrogen losses with perennial biofuel crops 3
(Date:5/1/2015)... - Softchoice, a leading North American IT solutions and managed services ... two Cisco® Partner Summit Country awards. Cisco ... Partner of the Year for Canada ... Montreal . "We are ... at this year,s conference," said David MacDonald , Softchoice,s ...
(Date:5/1/2015)... According to a new ... Consumables), by Type (Monoclonal, Polyclonal), by Technology (Hybridoma), ... - Analysis & Global Forecast to 2019", published ... Production Market for the forecast period of 2014 ... $2.572 Billion by 2019 from $1.425 Billion in ...
(Date:4/30/2015)... April 30, 2015   Tamir Biotechnology , a ... update on its Ebola antiviral therapy program. ... TMR004, is currently being evaluated and considered by a ... against Ebola. During the first quarter of 2015, the ... To Accelerate The Evaluation of Potential Treatments and Vaccines ...
(Date:4/30/2015)... April 30, 2015 Oxford Finance LLC ("Oxford"), ... life sciences and healthcare services companies, today announced the ... agreement with Celula, Inc., a diagnostic testing company focused ... better patient care and improved outcomes.  Proceeds of the ... expand the commercialization of its products in the U.S. ...
Breaking Biology Technology:Softchoice recognized with two Country Awards at Cisco Partner Summit 2015 2Antibody Production Market worth $2.572 Billion by 2019 2Antibody Production Market worth $2.572 Billion by 2019 3Antibody Production Market worth $2.572 Billion by 2019 4Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 2Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 3Tamir Biotechnology Provides Update on TMR004 Development Against Mutating Ebola 4Oxford Finance Provides $10 Million Debt Financing to Celula 2
... 15 A panel of expert judges selected Nikon Instruments, ... second place among the top ten in The Scientist,s ... of invention, vision and utility. The award, the first-ever ... in the past year, acknowledges Nikon,s exclusive PFS system for ...
... Dec. 15 ADVENTRX Pharmaceuticals, Inc. (Amex: ... and commercializing proprietary product candidates primarily for the treatment ... range of strategic options, including the sale or disposition ... a strategic business merger and other transactions that maximize ...
... 15 BioMed Realty Trust, Inc.,(NYSE: BMR ) ... fourth,quarter 2008 dividend of $0.335 per share of common stock. ... common share. , BioMed ... dividend,of $0.46094 per share of the company,s 7.375% Series A ...
Cached Biology Technology:Nikon Instruments Perfect Focus System Wins Second Place in The Scientist's Top Innovations of 2008 Award 2ADVENTRX Exploring Strategic Options 2ADVENTRX Exploring Strategic Options 3ADVENTRX Exploring Strategic Options 4BioMed Realty Trust Declares Fourth Quarter 2008 Common Stock and Preferred Stock Dividends 2
Goat Anti-Horse IgG(T) Antibody, Unconjugated...
Identify and characterize Phosphoinositide (PI(3,4,5)P3) binding...
Mouse polyclonal antibody to MCFD2 - multiple coagulation factor deficiency 2...
Rabbit polyclonal to ErbB 2 (phospho Y1248) ( Abpromise for all tested applications). entrezGeneID: 2064 SwissProtID: P04626...
Biology Products: