"sean" wrote in message
...
|I have also supplied a graphic explanation of the `Variable speed Core
| ` model at the following url
|
| http://www.youtube.com/watch?v=CiCBrXKIH_0
|
| ...to accompany the model outlined below...
|
|
|
| Studies of the seismic record indicate that seismic waves travel
| fastest along a north-south axis from the southern hemisphere to
| Siberia (and more recently suggesting an easterly shift to over
| Alaska) implying that over the the last century it appears that the
| earths solid core is rotating in an easterly direction. The conclusion
| made from this data is that the earths solid inner core can be said to
| be rotating west to east at approximately 1 degree longtitude a year
| faster than the mantle.(Song, Richards 2005) This implies then, that
| relative to Earths solid inner core, the mantle and the outer part of
| the liquid core can be said to be moving in a westerly direction. This
| also implies that there must be speed gradient in the liquid core
| across its radius (relative to the mantle), of approximately 0 degrees/
| year near the mantle to 0.1 degreeslongtitude/year near the solid
| core. Thus using Lenzs` law, one can predict that the larger volume of
| the outer part of the liquid core will induce a residual westerly
| electrical current in the inner part of the liquid core (ie the outer
| liquid core moves in a westerly direction relative to the inner part
| of the liquid core). Flemings Right Hand rule predicts this westerly
| direction of the electrical current will in turn induce a magnetic
| south pole near Earths geographic North Pole. Recent experiments
| confirm this, in that a freely rotating liquid metal will generate a
| self sustaining magnetic field without a neccesary seed magnetic field
| to kickstart the dynamo effect as previously thought.(Generation of a
| Magnetic Field by Dynamo Action in a Turbulent Flow of Liquid Sodium.
| R. Monchaux et al 2007).
| As the seismic record shows that sound waves travel fastest across
| earths N-S axis, this could also be consistent with the solid inner
| core being slightly elongated in the earths N-S axis. (sound waves
| travel fastest in a denser medium) Following from this, it can be
| hypothesised that contrary to the speculation that the earths core is
| a rigid crystal, one could alternatively give the `solid` inner core
| non rigid, or elastic properties. Observations support this
| possibility (Andrew Jephcoat and Keith Refson (2001-09-06). "Earth
| science: Core beliefs". Nature 413: 27-30. doi:10.1038/35092650.) If
| so its shape could then be said to oscillate over large timescales
| between that of elongated in the N-S axis to stretched along the
| equatorial plane. Obviously this implies that the inner cores`
| rotational speeds would vary between slower and faster than the
| mantle, when the solid core goes from wider at the equator to
| stretched at the poles respectively. The historical record of Earths
| pole reversals and changing field strength can thus be well modeled by
| this variable core speed model. In that if currently it is accepted
| that the `solid core` is stretched is the north south axis and rotates
| faster than the mantle then it follows that when the cores volume
| changes shape to that of more stretched in the equatorial axis, It
| must then be forced to slow its rotational speed and therefore rotate
| slower than the mantle . Not faster as currently observed. (ie the
| core then will rotate in a westerly direction relative to the mantle)
| In turn this would reverse the relative motion between the inner and
| outer parts of the liquid core (as described above)
| and in turn reverse the induced equatorial direction of the induced
| electrical current which would then reverse the direction of earths
| induced magnetic field from N-S to S-N. THis is observed in the
| historical seismic record.
| The current weakening of Earths magnetic field must then be due to the
| solid cores` rotational speed slowing relative to the mantle. In other
| words if it is assumed that currently the core is observed to be
| travelling faster than the mantle in an easterly direction at 0.1
| longitude per year than that rate must have been faster in the past
| and will be slower in the future. This can only be explained if it is
| assumed that the `solid` core itself is becoming less stretched in the
| N-S axis and tending towards becoming stretched in the equatorial
| axis.
| To explain the observed off axis magnetic North pole using this
| `variable core speed model` one can again refer to the seismic record
| which shows that the axis of anisotropy, corresponding to the fastest
| direction for seismic waves, tilts about 10 degrees from the Earth's N-
| S axis of rotation, towards Siberia. From this data one can interpret
| that the inner core not only could be `stretched` in the N-S axis but
| also be physically tilted 10 degrees off axis towards Siberia as it
| rotates within the earths core. In effect while it is rotating faster
| than the mantle, its axis of mass is also tilted off center by 10
| degrees and stretched slightly in the N-S axis. This will in turn
| effect the equatorial rotation of the liquid inner core which acts as
| a boundary between the mantle and the solid inner core. Modeling the
| liquid core flow is always speculative for any model, but it is not
| unreasonable to assume that a 10 degree off axis solid core that
| rotates around its N-S center of mass could create a flow in the inner
| part of the liquid core that was also tilted in an equal but opposite
| 10 degrees `off axis` in the equatorial plane. Resulting in an equal
| and opposite tilt in the induced magnetic North pole of 10 degrees
| towards the Arctic, using Lenz and Fleming as described previously.
| This predicted tilt in the magnetic pole towards the arctic is
| consistent with observation. As is the prediction that the axis of the
| solid core is tilted towards Siberia.
| The final element is to explain the northerly drift of the magnetic
| North pole. There is insufficient seismic data to confirm or refute
| this prediction but the variable core speed model presented in this
| paper predicts that this would be due to an equal northerly drift of
| the solid inner cores rotational axis from more than 10 degrees off
| axis as currently observed to one that will be tilted by 0 degrees, or
| directly N-S. In other words if the solid core is said to be currently
| rotating tilted by 10 degrees off axis and this induces a off axis
| electrical current and off axis magnetic pole. Then a solid core that
| is aligned to earths geographic N-S axis as it rotates will generate
| no off axis electrical current and therefore no off axis magnetic
| field. In other words the cores volume is stretched in the N-S axis
| and tilted by 10 degrees but is changing shape as it rotates so that
| its N-S stretch is tending towards 0 degrees. In fact it would be more
| correct to say that its nvolume is changing from stretched 10 degrees
| off axis to not stretched in either the N-S or equatorial axis. This
| would be in line with a slowing down of the solid cores rotational
| speed as seen in the observed weakening of the overal magnetic field.
| (The variable speed core model predicts that when the core is
| perfectly circular in volume it rotational speed relative to the
| mantle will be the same as the mantle ,ie 0 degrees per year. And *no*
| magnetic field will be generated)
| The conclusion this `variable speed core` model makes is that all the
| combined observations of earths core and magnetic field indicate that
| the solid core is currently stretched in the N-s axis, tilted off
| center by 10 degrees and rotating faster than the mantle in an
| easterly direction by 0.1 degrees per year. But also observations
| indicate that it must be slowing down, relative to the mantle, tilting
| its axis more towards earths vertical N-S geographical axis, and most
| likely becoming less stretched in the N-S axis.
|
| Sean
| see this url for an accompanying graphic explanation of the variable
| speed core model...
| http://www.youtube.com/watch?v=CiCBrXKIH_0
| www.gammarayburst.com

You sure went to a lot of work and are to be congratulated on
the pretty pictures, but sadly this motor rotates in either
direction when the brushes are vertically aligned:
http://cache.eb.com/eb/image?id=63375&rendTypeId=4
and you do not have any brushes.
Whilst I can see where you are going with the core moving
relatively to the mantle, you haven't explained polarity reversal
or permanent magnetism. Core stretching is imagination stretching.
http://space.rice.edu/IMAGE/livefrom/sunearth.html