Space Weather

by Paulus
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Space Weather

This picture was recently taken in Iceland.  The power of the sun on our climate and volcanic activity.

 

CME & Solar Storm, California Quake Risk, SMOS | S0 News Mar.25.2021

Today’s Featured Links: Greenland: https://advances.sciencemag.org/conte…​ New Basalt: http://www.leeds.ac.uk/news/article/4…​ San Andreas: https://advances.sciencemag.org/conte…​ Alaska Quake: https://advances.sciencemag.org/conte…​ SMOS: https://www.esa.int/Applications/Obse…​ M87: https://public.nrao.edu/news/magnetic…​

How Prepared Are We For A Carrington Level Solar Storm?

Interesting video but what they don’t tell you is that it is much worse if your magnetic shield is weak.

 

What’s Wrong with Earth’s Magnetic Field?

Good video despite errors about the mantel and crust etc.  This video is form August 2018 and we have a further acceleration since then and also glitches in the earth rotation speed.  They fail to highlight the difference between pole reversal and magnetic excursion (see below the video).  Their model of the earth is wrong – it is not a nested egg but far more complex (see below) and the very inner core is probably a plasma generating our electro-magnetic shield.

 

Magnetic excursion vs Magnetic reversal

Excursions happen on a shorter cycle and do more damage -reversals are on a longer cycle. This is from:

Weatherman’s Guide to the Sun
3rdEdition
Ben Davidson
Space Weather News
2020

One of the strangest aspects of geophysical science is the seemingly unexplainable nature of a cyclical magnetic excursion on the Earth. A magnetic excursion is not like the magnetic reversals that occur every few hundred thousand years- they happen much more frequently, and do not result in a reversal of polarity, but a flip and rapid flip back, such that the end result (geomagnetically) is the same as the start. The evidence suggests that they are true extinction level events, much more devastating to the biosphere than the longer-term events (Channel and Vigliotti 2019). [page 245]
The last magnetic excursion is known as the Gothenburg event, and it occurred approximately 12,000 – 13,000 years ago. The Lake Mungo event was somewhere between 21,000 and 25,000 years ago. The Mono Lake event was ~31,000-37,000 years ago. The Laschamp event was ~ 41,000 – 48,000 years ago. There is evidence of events in the Vostok ice cores around 60,000 years ago, and in the volcanic flows from the Toba eruption period ~72,000 years ago.[page246]
According to Rune Floberghagen, the former head of the ESA/SWARM satellite mission studying Earth’s magnetic field, (1) the magnetic pole motion is intimately related to the weakening of the global field, and (2) the last major acceleration of Earth’s field loss (~year 2000) took us from losing 5% per century to 5% per decade. The next major acceleration could put earth within years to a few decades of having a considerably diminished magnetic field. The sun’s magnetic field has been fading rapidly (solar polar fields have lost ~40% of their strength in the last half-century, and with another grand solar minimum forecast in the coming decades the sun may be ready to give-in. In almost every cyclical harmonic system the shorter cycle harmonics make up the longer cycles, and the ~400-year grand solar cycle is no exception. This is to say, that when the longer 2400 and 12,000-year cycles reset, it will be during a 400-year cycle reset as well, and unless the magnetic fields of the sun and earth stop the rate of change and rapid accelerations of their shifts, it should not be discounted that this century could mark the end of the long-period cycle. Solar micronova, magnetic excursion, radiation & DNA mutation, impactors, ice age, surge deposits, massive forcing of tectonics, weather and negative health effects – that is a lot to put together. I hope this helps: [page 253]

 

On the  structure of the inner mantel see this previous post:

Seismology

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