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Category Archives: True Polar Wander
Bad Hair Days and Magnetic Excursions
This picture of a model simulating the weakened and divided magnetic field during a reversal should be in the thesaurus when you look up “bad hair day”. If this is anywhere near correct it should be no surprise that the nano … Continue reading
Ring Around Antarctica
There are lots of rings around Antarctica. Sailors know the circum-Antarctic winds as the fearsome fifties, the screaming sixties, etc. These winds are not impeded by any land and they drive the circum-Antarctic currents in the Southern Ocean. The surface currents … Continue reading
Gravity and Magnetism
This post follows the last two which were inspired by discovering that the virtual geomagnetic pole (VGP) wander path during the Laschamp reversal as revealed in Black Sea sediments by the work of Norbert R. Nowaczyk consistently follows lows in … Continue reading
Further Musing on the Affinity of Magnetic North for Gravity Holes During the Laschamp Reversal.
We know so little about what this means that it may be helpful to focus on what the gravity geoid is not. The earth is NOT shaped like a potato. Vertical exaggeration is used on nearly all maps to keep them … Continue reading
Simplified Path of Magnetic North During 41kya Reversal on Current Geoid
There was this really cool Hemholtz plot of the path of magnetic north during the last geomagnetic reversal from wander paths of sediments in the Black Sea. Had a sense that it was avoiding the geoid gravity high knob in Indonesia and decided … Continue reading
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