Earth's protective magnetic field is weakening in a region across the South Atlantic. What's going on, and should we be worried?
We might think of this the same way as a human is stopping during a hike to read a map. When the map is blurred or the reference (perceived magnetic direction) is dispersed or moving due to magnetic disturbances, however, calibration is impossible. In the case of the dogs it thus would...
doi:10.1016/S0262-4079(12)60020-7Ensuring some offspring ‘read’ Earth's magnetic fields incorrectly may be key to how turtles deal with the shifts to the field that occur each yearAnil AnanthaswamyThe New Scientist
“Measurements have been made of the Earth's magnetic field more or less continuously since about 1840. If we look at the trend in the strength of the magnetic field over this time (for example the so-called 'dipole moment' shown in the graph below) we can see a ...
Since our planet's magnetic field acts as a kind of shield - protecting Earth from solar winds and cosmic radiation, in addition to determining the location of the magnetic poles - any reduction in its strength is an important event we need to monitor closely, as these changes could ultimatel...
Site Map Contact Info Get Quote Contact Us The Earth Is a MagnetThe Earth acts like a very big, weak magnet -- that's why compasses point north! In this article, we explore a few interesting facts about Earth's magnetic field, including a few ways to play with it using neodymium...
Stress drops in rupture asperities are lower following a MW 6.0 mainshock, suggesting decreased fault strength after a large earthquake Stress drop is inversely correlated with damage, indicating fractured material and possibly enhanced fluid flow limit stress accumulation Abstract Full text PDF References...
As the shear strength along the interface might be lower than that of the soil, shearing would be first initiated at the interface of bedrock ridge. Though exhibiting both tensile and shear characteristics, the location of Changjing earth fissure is near the maximum convex-upward curvature in the...
Or is it because it's over a deposit of magnetic iron? Or does it have something How does Earth's magnetic field protect us from solar wind? Why does a changing magnetic field induce a current? Why does magnetic field strength decrease with distance? How does the Sun's magnetic field ...
ies for take-off]]>Satellite trio will unravel mysteries of planet's inner dynamo and could even find iron mines from space.doi:10.1038/nature.2013.14212SchiermeierQuirinNature