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Old 18th-May-2008, 07:53 AM
Peter Ravenscroft Peter Ravenscroft is offline
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Join Date: Jan 2007
Location: Closeburn, Queensland
Posts: 16
Peter Ravenscroft
Default The match in the maps

Hi Spadlet,

The questions are very welcome.

The key to this lot is the mapped spatial coincidences. The radial intesity mag shift map that Jeremy Bloxham did in 1995, in what was basically an introduction to geomagnetism, showed modelling he had done on the core-mantle boundary flux shifts. The highest core-mantle boundary magnetic field change regions shown there pretty much lie directly below where several global temperature change maps show the regions of greatest heating on the planet to lie - the Antarctic Peninsula and eastern Siberia, and now also, (going by the surface mag shifts only as we do not have the deep ones updated, far as I know) south and SSE of Madagascar

My only interest in "manipulating" the data was to try get the two sets of maps on the same projection and with the continents in the same places. My interest is in what is going on, not data bending. I have no particular axe to grind.

I have not yet been able to get the mag and temp maps on the same projections, my apologies to one and all.


The matches the maps show are not permanent over time, as both sets of data are shifting comtinually, and we do not yet have a handle on the time lags. So they match for a while and then the patterns shift. A bit like rain clouds and wet patches pn the ground; not every airphoto run shows a perfect correlation, but there may still be a link.

There is a Ph.D in that lot for someone, and if senior enough in the academic hierarchy and if it all stands up, no doubt a few science prizes in due course.

It is very curious that it seems the closest fit to the magnetics on the satellite microwave temperature data is at the troposhere-stratosphere boundary, or about 10 kms up, and not at the surface. That may mean that as the earth's magnetic field shifts and weakens, the shield around the planet weakens above the points of maximum change, as one might expect, and that that allows more cosmic radiation, in particular solar protons, in. They bring a lot of energy and are mostly deflected usually by the magnetosphere. As they increase in numbers during sunspot activity, ir may be we have a complicated and rather beautiful waltz going on between our magnetic field and that of the sun. Someone could set it to music, using the graphs of insolation as the basis of the symphony.

Yes, the rotation speeds deep down are thought to be out of synchn, and that may in time trigger the magnetic field reversals. Those irregularities will be what are driving both plate tectonics and the magnetic shifts here discussed. See the stressed backyard dynamo analogy on my website. But, Google can explain that in detail better than I.

If there is a link between the mag field and ozone, I do not know, but I would guess that it is more likely the mag changes are driving the ozone ones, than the ozone "shorting" the magnetics. Almost all the theorists seem agreed the geomag fields are generrated almost entirely internally.

Mag reversals are well covered on the net. We understand then almost perfectly, of course. We just don;t know why they happen or when they will.

How do we test any of this lot? How do we test the greenhouse model? Neither is easy. Meanwhile, the pollies and the planners are clamouring for certainty, and in most cases, are telling us we have it already. That last surprises some of us older geological types, as we have so often found that both our own and others models have not stood up to the complexities of reality. My own experience was that every drillhole changes the model, unless the model was too vague to be useful to start with. With the deep ice cores, we have just two drillholes,both on the same continent

So now we understand the climate of whole planet for the last 740,000 years? Pull the other leg, its got a goat tied to it.

I'm a geologist, not a geofink, so I will fairly rapidly get out of my depth in this geomagnetism field. Best to just consider the maps, and then do your own research and checking. Or, run it past several folk whose field this is.

I simply cannot see any way that AGW can explain this lot. Let's watch the mag and temperature changes now developing south of Madagascar for a couple of years. And then see how the IPCC will explain that lot. Also, the mag shift off Brazil, is not yet, I think, showing up in the temperature change maps. Maybe it never will, but this lot may yet have predictive value for the met. people. We will see.

Regards to you, and to all readers,

Ta for the interest.

Peter.
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