Orbital modulation of the Earth's magnetic field intensity
Article Abstract:
Significant power both at orbital eccentricity and obliquity has been demonstrated through spectral analysis of sedimentary records of relative geomagnetic palaeointensity from two North Atlantic sites. It has been shown that orbital obliquity has an impact on geomagnetic field intensity. This seems to be the result of the effect of obliquity on precessional angular velocity and thus on precessional forces in the Earth's core. There was no constant phase relationship between 41-kyr power in palaeointensity and obliquity. This may indicate variable phase shift between orbital forcing and glacial response.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Detection of magnetic field intensity by sea turtles
Article Abstract:
The ability of hatchling loggerheads to perceive differences in magnetic field intensities along their migratory trail was studied using electronic tracking units. Results showed that the sea turtles can identify magnetic features that they are earlier exposed to in the North Atlantic ring. This enabled them to pinpoint their location and not to veer away from the gyre. However, it was also found out that young sea turtles did not have the ability to stay in the course the way adult turtles do.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Large-scale magnetic fields in the outflow from the young stellar object T Tauri S
Article Abstract:
T Tauri stars are stellar objects that are found to be progenitors to stars similar to the Sun. They are commonly observed with circumstellar disks and strong gas outflows, which are believed to be collimated by magnetic disks. The recently observed emission of two large lobes of moderately relativistic particles by the infrared companion of the prototypical T Tauri star suggests the existence of an energetic, ordered magnetic field very far away from the source.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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