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:3/28/2017)... , March 28, 2017 ... Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video ... and Region - Global Forecast to 2022", published by ... in 2016 and is projected to reach USD 75.64 ... 2017 and 2022. The base year considered for the ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
(Date:3/22/2017)... 2017 Vigilant Solutions , a vehicle ... agencies, announced today the appointment of retired FBI special ... safety business development. Mr. Sheridan brings more ... a focus on the aviation transportation sector, to his ... Mr. Sheridan served as the Aviation Liaison Agent Coordinator ...
Breaking Biology News(10 mins):
(Date:6/23/2017)... ... June 23, 2017 , ... ... of a redesigned, easier-to-navigate website for all six of their healthcare job ... nurses, dentists, pharmacists, physical and occupational therapists, and biotechnicians, DocCafe.com and the ...
(Date:6/22/2017)... ... June 21, 2017 , ... Building on the success of the inaugural ... on the very latest developments in radical life extension. RAADfest combines cutting edge science ... the empowerment of personal development, making it the largest most comprehensive and inclusive super ...
(Date:6/22/2017)... , ... June 22, 2017 , ... ... results to clients throughout the biopharma and life sciences industries, continue to be ... is seeing. Tunnell’s Kip Wolf will be speaking on “The State of Information ...
(Date:6/20/2017)... ... 20, 2017 , ... CTNext , Connecticut’s go-to resource ... a Higher Education Entrepreneurship Advisory Committee to implement the recommendations of the master ... representatives from 35 higher education institutions across the state over the past six ...
Breaking Biology Technology: