Navigation Links
Stream water study detects thawing permafrost
Date:5/5/2010

ANN ARBOR, Mich.---Among the worrisome environmental effects of global warming is the thawing of Arctic permafrost---soil that normally remains at or below the freezing point for at least a two-year period and often much longer. Monitoring changes in permafrost is difficult with current methods, but a study by University of Michigan researchers offers a new approach to assessing the extent of the problem.

The new study approach, which relies on chemical tracers in stream water, is described in the journal Chemical Geology.

Overlying permafrost is a thin "active layer" that thaws every summer, and increases in the thickness of this layer over the years indicate thawing of permafrost. Both physical measurements and modeling suggest that active layer thickness has increased in some areas over the 20th century and that if present warming trends continue, increases of up to 40 percent could occur by the end of the 21st century.

Although the full effects of thawing are yet to be determined, coastal erosion and damage to the roads, buildings and pipelines that have been built on permafrost are likely outcomes. In addition, thawing permafrost may release the greenhouse gases carbon dioxide and methane into the atmosphere, triggering further warming and more permafrost thawing.

Currently, the main method for determining thaw depth is with a graduated steel probe. "You stick it in the ground and see when it hits frozen material," said geochemist Joel Blum, who with ecologist George Kling and former graduate student Katy Keller undertook the new study.

"We were studying the chemistry of soils in the area around Toolik Field Station in northern Alaska, and we found that once we got below the thickness that typically would thaw during summer, the soil chemistry changed dramatically," said Blum, who is the John D. MacArthur Professor of Geological Sciences. "Material that has not thawed since it was deposited by glaciers 10
'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

Page: 1 2

Related biology news :

1. Volcanic ash research shows how plumes end up in the jet stream
2. New study shows rising water temperatures in US streams and rivers
3. Cold fusion moves closer to mainstream acceptance
4. Study shows woody plant encroachment has increased stream flow in the Edwards Plateau
5. New studies reveal downstream processes of ion channel inactivation
6. How good are tests for E. coli in streams?
7. Chloride found at levels that can harm aquatic life in urban streams of the Northern US
8. Spring cold snap helps with stream ecosystem research
9. Interventional radiology: From sidelines to mainstream for patients
10. Penn medicine draws road map for elimination of central line-associated bloodstream infections
11. GEN reports biomanufacturers target a fully disposable process stream
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... FASEB MARC (Maximizing Access to Research Careers) Program ... Society of Human Genetics from October 18 22, ... meant to promote the entry of students, post doctorates ... the basic science community and to encourage the participation ... Genetics. This year MARC conferred 16 awards totaling ...
(Date:8/28/2014)... Bethesda, MD FASEB MARC (Maximizing Access to ... recipients for the Genetics Society of America,s 27th ... October 3, 2014 in Pacific Grove, California. ... entry of students, post doctorates and scientists from ... science community and to encourage the participation of ...
(Date:8/28/2014)... , Aug. 28, 2014  Privacy Advocate and Senior ... Jennifer Lynch , joins the lineup of biometric and ... annual Biometrics UnPlugged Executive Summit in Tampa, ... Previously announced speakers include Steven Rahman, Director, Technology and ... Sector at Experian. The theme of this year,s event ...
Breaking Biology News(10 mins):Biometrics UnPlugged Welcomes the Electronic Frontier Foundation's Jennifer Lynch to the Mobility at the Crossroads of Commerce and Privacy Summit 2
... San Francisco, March 7, 2011 A ground-breaking pair ... Science, open today with several hundred scientists, researchers, ... biomedicine who share a common interest in transforming ... promotion. AMIA, the association for informatics professionals, convenes ...
... OAK RIDGE, Tenn., March 7, 2011 In ... for a bioprocessing strategy and genetically engineered microbe developed ... Center. Using consolidated bioprocessing, a team led by ... Angeles for the first time produced isobutanol directly from ...
... development, sensory and motor fibers interact to form nerves ... Andrea Huber Brsamle of the Institute of Developmental Genetics ... interaction functions at the molecular level: The cell surface ... nerve fibers and controls their interaction in order to ...
Cached Biology News:Summits on translational science bridge domains critical to health advancements 2Summits on translational science bridge domains critical to health advancements 3BESC scores a first with isobutanol directly from cellulose 2
(Date:8/29/2014)... California (PRWEB) August 29, 2014 ... of Energy's 2014 Hydrogen Production R&D Award ... -- by splitting water using sunlight. , Shared ... (NREL) and the University of Nevada, Las Vegas ... work developing models of photoelectrochemical solar-hydrogen production and ...
(Date:8/28/2014)... 28, 2014 Best Sanitizers, Inc., a ... food processing industry, is asking industry professionals to prepare ... of the E2 soap they’re currently using to the ... . Hand hygiene is critical to fighting cross-contamination ... environment. Six key criteria are identified to evaluate the ...
(Date:8/28/2014)... , Aug. 28, 2014 ... a new market research report ... Whole Exome Sequencing ... (Library Preparation, Target Enrichment), by ... by Synthesis), by Application (Cancer, ...
(Date:8/28/2014)... , Aug. 28, 2014  Armetheon, Inc. ( ... novel mid- to late-stage cardiovascular drug candidates, today ... its first round of financing. The Series A ... Hercules Bioventures with participation from investors that included ... executive, Dr. Larry Hsu , the founder ...
Breaking Biology Technology:Livermore Team Awarded for Hydrogen Production Research 2Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 2Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 3Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 4Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 5Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 6Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 7Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 8Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 9Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 10Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 11Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 12Whole Exome Sequencing Market by Product (Systems, Kits (Library Preparation, Target Enrichment), by Services (Sequencing), by Technology (Sequencing by Synthesis), by Application (Cancer, Monogenic disorders) - Global Forecast to 2018 13Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3
... Corporation (Nasdaq: UTHR ) and its wholly-owned subsidiary,Lung ... Drug Administration,(FDA) has accepted for review the New Drug ... arterial hypertension. The NDA,will be subject to a standard ... deadline of April 30, 2009., United Therapeutics Corporation ...
... Inc. (Amex: IMA ), a leading manufacturer ... and professional markets, today,announced that Ron Zwanziger, Chairman, ... President, Finance, are scheduled to,present at the Morgan ... 2008 in New York. Their presentation is scheduled,for ...
... business ... operations, ... professionals, today unveiled a new search,category -- Practice Management. The new ... the,Web, including the financial, legal and administrative resources needed to,effectively manage ...
Cached Biology Technology:SearchMedica Launches Practice Management Search Engine for Medical Professionals 2
... HERAfreeze ultra low temperature freezers offer ... safe storage of biological samples with ... five separate inner doors ensure excellent ... costs. ,Application oriented accessories simplify ...
...
...
Physical Form: powder Color: white Removes FLAG peptide from N-terminal and Met-N-terminal fusion proteins. Supplied with optimized enterokinase buffer....
Biology Products: