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Natural Radio Lab

Natural Radio is the VLF radio emissions that originate terrestrially from lightning and within the earth's magnetosphere through interaction with the Sun. Most of these radio signals, sferics, tweeks, whistlers, chorus and others, occur within the range of human hearing, and can be heard with simple receivers as described on this site.

Natural Radio Lab also looks at Space Weather and Geomagnetic Storms. These are affected by solar activity such as the solar wind, sunspots, solar flares and coronal mass ejections or CMEs. In the popular media, these events are often loosely referred to as "solar storms" or "sun storms".

Please explore this site. I hope you go beyond reading what's here and actually go out and take the opportunity to hear whistlers or the enchanting sounds of the dawn chorus.

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What is a “Coronal Mass Ejection” (CME)?

naturalradiolab.com Posted on January 17, 2012 by Mark KarneyOctober 21, 2012

The outer solar atmosphere, the corona, is structured by strong magnetic fields. Where these fields are closed, often above sunspot groups, the confined solar atmosphere can suddenly and violently release bubbles or tongues of gas and magnetic fields called coronal mass ejections. A large CME can contain 10.0E16 grams (a billion tons) of matter that can be accelerated to several million miles per hour in a spectacular explosion. Solar material streaks out through the interplanetary medium, impacting any planets or spacecraft in its path. CMEs are often associated with flares but can also occur independently. If a CME hits earth, it can cause a geomagnetic storm. The intensity of the storm will be affected by the orientation of the CME’s magnetic field, its speed and density. A strong CME hit often causes Aurora displays at low latitudes.

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