Navigation Links
Surprisingly rapid changes in the Earth's core discovered
Date:7/7/2008

In a recent paper published in Nature Geoscience (*), the geophysicist Mioara MANDEA from the GFZ German Research Centre for Geosciences, Potsdam and her Danish colleague Nils OLSEN from the National Space Institute/DTU Copenhagen, have shown that motions in the fluid in the Earths core are changing surprisingly fast, and that this, in turn, effects the magnetic field of our Planet.

The very precise measurements of the Earths magnetic field delivered by the geosatellite CHAMP combined with rsted satellite data and ground observations over the past nine years, have made it possible to reveal what is happening at 3000 km under our feet. Indeed, for the first time, Nils Olsen and Mioara Mandea have computed a model for the flow at the top of the Earths core that fits with the recent rapid changes in the magnetic field, and is also in agreement with the changes in the Length-of-Day variation. This core flow is rather localized in space, and involves rapid variations, almost sudden, over only a few months a remarkably short time interval compared with the respectable age of our Planet or even with the time of the last magnetic field reversal, some 780000 years ago.

Scientists from the Helmholtz Centre GFZ and other institutions are currently involved in the ESA Swarm mission, which will follow on the CHAMP achievements. The Swarm constellation consists of three CHAMP-type satellites, which will measure the Earths magnetic field even more accurately than before.


'/>"/>

Contact: Franz Ossing
ossing@gfz-potsdam.de
49-331-288-1040
Helmholtz Association of German Research Centres
Source:Eurekalert

Page: 1

Related biology news :

1. European Union forests expanding, absorbing carbon at surprisingly high rate: study
2. Exploited fish make rapid comeback in worlds largest no-take marine reserve network
3. Birds migrate earlier, but some may be left behind as the climate warms rapidly
4. Researchers document rapid, dramatic reverse evolution in the threespine stickleback fish
5. Arbor Vita rapid H5N1 flu diagnostic presented at ICEID meeting
6. New decontamination system kills anthrax rapidly without lingering effects
7. Selexis Announces Advanced Approach to Maximize Power of Genetic Elements for Rapid Development of High Performance Cell Lines
8. Air monitoring helps anticipate possible ecosystem changes
9. Thinking ahead: Bacteria anticipate coming changes in their environment
10. Woolly-mammoth gene study changes extinction theory
11. Mass. General study shows how exercise changes structure and function of heart
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/30/2016)... CHICAGO , Nov. 30, 2016  higi ... a new partnership initiative targeting national brands, industry ... and reward their respective audiences for taking steps ... Since its inception in 2012, higi has built ... US, impacting over 38 million people who have ...
(Date:11/29/2016)... France , November 29, 2016 Nearly one ... Continue Reading ... ... is part of an efficient Identity Management. (PRNewsFoto/DERMALOG Identification Systems) ... DERMALOG is Germany's largest Multi-Biometric supplier: ...
(Date:11/22/2016)... , November 22, 2016 According to the ... IRIS, Palm Print, Face, Vein, Signature, Voice), Multi-Factor), Component (Hardware and Software), ... published by MarketsandMarkets, the market is expected to grow from USD 10.74 ... CAGR of 16.79% between 2016 and 2022. ... ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... 2016  Soligenix, Inc. (OTCQB: SNGX) (Soligenix or ... developing and commercializing products to treat rare diseases ... today the long-term follow-up data from its Phase ... Innate Defense Regulator (IDR), in the treatment of ... patients undergoing chemoradiation therapy (CRT).  The additional 12-month ...
(Date:12/8/2016)... 8, 2016 Savannah River Remediation LLC ... selected NewTechBio,s NT-MAX Lake & Pond Sludge ... bacteria, in conjunction with Hexa Armor/ Rhombo cover ... National Pollutant Discharge Elimination System requirements. ... steady history of elevated pH levels, above 8.5, ...
(Date:12/8/2016)... , Dec. 8, 2016   Biocept, ... leading commercial provider of clinically actionable liquid biopsy ... announces that clinical data featuring its Target Selector™ ... tissue biopsy for the detection of actionable biomarkers ... from research sponsored by Sara Cannon Research Institute ...
(Date:12/7/2016)... ... December 07, 2016 , ... Huffman Engineering, Inc. ... a Wonderware Certified System Integrator Partner. Huffman Engineering is the only Nebraska-based ... “The System Integrator Partner certification gives customers confidence that our engineers are fully ...
Breaking Biology Technology: