(Feb 6, 2019)
Scientists on Monday released an emergency update to the World Magnetic Model, which cellphone GPS systems and military navigators use to orient themselves.
It‘s a minor change for most of us – noticeable only to people who are attempting to navigate very precisely very close to the Arctic.
(December 16, 2014)
Changes in the Earth‘s outer core trigger unpredictable changes in its magnetic field, an invisible force that extends from Earth‘s interior to where it meets a stream of charged particles emanating from the Sun.
(Feb 6, 2019)
Scientists on Monday released an emergency update to the World Magnetic Model, which cellphone GPS systems and military navigators use to orient themselves.
It‘s a minor change for most of us – noticeable only to people who are attempting to navigate very precisely very close to the Arctic.
(23.03.2023)
Experts told Newsweek that the pole could reach the vast Russian region as soon as the middle of the century.
Having said that, the movement of the magnetic north pole is unpredictable and scientists cannot reliably forecast how it will behave beyond a few years into the future. As a result, there is significant uncertainty as to how long it will take to reach Siberia and whether or not it will even get there at all.
(6 FEBRUARY 2019)
Scientists on Monday released an emergency update to the World Magnetic Model, which cellphone GPS systems and military navigators use to orient themselves.
It‘s a minor change for most of us – noticeable only to people who are attempting to navigate very precisely very close to the Arctic.
But the north magnetic pole‘s inexorable drift suggests that something strange – and potentially powerful – is taking place deep within Earth
(6. Oktober 2008)
Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“
(6. Oktober 2008)
Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“
(05.02.2019)
Zu den Hintergründen der Positionsverschiebungen des magnetischen Nordpols gibt es derzeit nur Theorien.
(17.01.2019)
Kurz nach der jüngsten turnusgemäßen Neukartierung des Erdmagnetismus im Jahr 2015 gab es allerdings einen geomagnetischen Ausschlag unter Südamerika, der nicht von Modellrechnungen vorhergesagt wurde. Zudem bewegt sich der magnetische Nordpol. Warum, ist noch nicht ganz geklärt.
(16.12.2010)
Wie ein unsichtbares Netz umgibt das Erdmagnetfeld unseren Planeten und schützt ihn vor energiereichen Teilchen aus dem Weltraum. Doch seit langem verliert es kontinuierlich an Stärke, in manchen Regionen um bis zu vier Prozent pro Jahrzehnt. Würde der Magnetschirm durchlässig, so hätte dies negative Auswirkungen auf das Klima und die Biosphäre.
(6. Oktober 2008)
Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“
(6. Oktober 2008)
Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“
(7. Oktober 2008)
Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“
(August 2008)
Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.
(20. Dezember 2009)
The Sun’s polar fields are currently ∼40% weaker than they were during the previous three sunspot minima. This weakening has been accompanied by a corresponding decrease in the interplanetary magnetic field (IMF) strength, by a ∼20% shrinkage in the polar coronal-hole areas, and by a reduction in the solar-wind mass flux over the poles. It has also been reflected in coronal streamer structure and the heliospheric current sheet, which only showed the expected flattening into the equatorial plane after sunspot numbers fell to unusually low values in mid-2008. From latitude–time plots of the photospheric field, it has long been apparent that the polar fields are formed through the transport of trailing-polarity flux from the sunspot latitudes to the poles.
(9. Januar 2019)
The magnetic pole is moving so quickly that it has forced the world’s geomagnetism experts into a rare move.
On 15 January, they are set to update the World Magnetic Model, which describes the planet’s magnetic field and underlies all modern navigation, from the systems that steer ships at sea to Google Maps on smartphones.
The World Magnetic Model (WMM) is a standard model of the core and large-scale crustal magnetic field. It is used extensively for navigation and in attitude and heading referencing systems by the UK Ministry of Defence, the US Department of Defense, the North Atlantic Treaty Organization and the International Hydrographic Organization.
(…)
The WMM is a model of the core and large-scale crustal fields only. However the satellite data contain unwanted signals such as small-scale crustal, external ionospheric and magnetospheric and their induced counterparts. These fields would have added noise to the WMM2015 SV model and could have biased its estimates.
BGS employed two techniques to avoid the contamination caused by external magnetic fields. Firstly we rejected those data most contaminated by these sources, as identified by a combination of local time, geomagnetic indices and solar wind data. ……..
„Most records longer than that are sitting somewhere comfortable in Europe,“ Hurst said, adding that their measurement will be used to help calibrate satellite measurements and inform global models, such as the World Magnetic Model, which is used by NATO and defence departments across the globe.