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Technical Topics => Propagation => Topic started by: skeezix on September 05, 2018, 0103 UTC

Title: Researchers develop a new technique to forecast geomagnetic storms
Post by: skeezix on September 05, 2018, 0103 UTC
https://phys.org/news/2018-08-technique-geomagnetic-storms.html

Quote
In the journal Chaos, from AIP Publishing, a group of investigators from Europe, led by Reik Donner at Potsdam Institute for Climate Impact Research in Germany, reports a new method for analyzing magnetic field data that might provide better short-term forecasting of geomagnetic storms.
Title: Re: Researchers develop a new technique to forecast geomagnetic storms
Post by: ChrisSmolinski on September 05, 2018, 1143 UTC
Quote
The investigators used hourly values of the Disturbance storm-time, or Dst, index. Dst values give the average deviation of the horizontal component of the Earth's magnetic field from its normal value. This deviation occurs when a large burst of charged particles arrives from the sun and weakens the field generated by the Earth. The Dst values form a single stream of numbers known as a time series. The time series data can then be recast into a 2-D or 3-D image by plotting one data point against another at a fixed amount of time into the future for forecasting.

I believe it was jFarley that got me hooked on checking the Dst index for estimating longwave propagation conditions. It is one of the values graphed on the HFU's propagation page: https://www.hfunderground.com/propagation/index.html#longwave
Title: Re: Researchers develop a new technique to forecast geomagnetic storms
Post by: jFarley on September 05, 2018, 1202 UTC
Here's another useful tool:

http://dk0wcy.de/magnetogram/

I usually refer to this before starting to process an overnite recording.
Title: Re: Researchers develop a new technique to forecast geomagnetic storms
Post by: ChrisSmolinski on September 05, 2018, 1211 UTC
Quote from: jFarley on September 05, 2018, 1202 UTC
Here's another useful tool:

http://dk0wcy.de/magnetogram/

I usually refer to this before starting to process an overnite recording.

Thanks for the link! I will add it to the HFU propagation page. 
Title: Re: Researchers develop a new technique to forecast geomagnetic storms
Post by: jFarley on September 05, 2018, 1430 UTC
Thanks, Chris; nice to have everything in one place.