Subject: watching the sun? Fri Oct 13, 2017 9:29 pm
This plot contains the estimated 3-hour [color:9ee4=FF0000]Planetary K-Index. K-indices of 5 or greater indicate storm-level geomagnetic activity around earth. Below is a one week K-indices view from four magnetometer reporting stations. Below is a one week A-indices view from four magnetometer reporting stations. Below is the 15 minute Wing-Kp Geomagnetic Activity Index model. Click HERE for more information.
K-Index Definition The K-index is a code that is related to the maximum fluctuations of horizontal components observed on a magnetometer relative to a quiet day, during a three-hour interval. The conversion table from maximum fluctuation (nT) to K-index, varies from observatory to observatory in such a way that the historical rate of occurrence of certain levels of K are about the same at all observatories. In practice this means that observatories at higher geomagnetic latitude require higher levels of fluctuation for a given K-index.
More information on the K-Index and Kp Index + conversion formula. http://sec.noaa.gov/info/Kindex.html
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Subject: magnetopause Fri Oct 13, 2017 9:36 pm
magnetopause @ http://pixie.spasci.com/DynMod/ this updates so I'm showing a screen capture of today's oddity.
Subject: watching the sun? 
Fri Oct 13, 2017 9:29 pm
