From 17:00 on December 1 to 8:00 on December 2, Beijing time, due to the impact of the solar coronal mass ejection (CME) explosion, there was a 3-hour geomagnetic storm with a KP of 7, a 3-hour KP of 6, and a 9-hour small geomagnetic storm, and the geomagnetic activity is still ongoing.
The KP index is the global magnetic field index, which reflects the situation of the earth's magnetic field activity every three hours, and the higher the value, the stronger the geomagnetic activity).
This is !! with the geomagnetic storm warning we issued on November 30Match.
Affected by geomagnetic storms, auroral activity has occurred in Heilongjiang, Inner Mongolia, Xinjiang and other places in China, and even Beijing has clear aurora sightings and observation records this time.
Mohe Aurora Author: Wang Xingze, Cultural and Tourism Office of Amur Forestry Bureau, Daxinganling Forestry Group Company.
Beijing Aurora Author: Pu Shi.
As a typical solar eruption activity, CME is driven by the strong magnetic field of sunspots, which throws hundreds of millions or even trillions of tons of coronal material at a high speed of hundreds to thousands of kilometers per second, forming a shock wave similar to **, and the shock wave is quickly transmitted to all parts of the solar system. After being bombarded by it, the direction and magnitude of the Earth's magnetic field change significantly, and geomagnetic storms occur.
With the occurrence of geomagnetic storms, the aurora appeared, the mystery of the orange aurora.
In addition to auroras, magnetic storms have many effects, one of which is to drive the movement of particles in the Earth's upper atmosphere to intensify, eventually causing the atmosphere as a whole to expand and spread higher into space, thus creating greater flight resistance for spacecraft flying in space. A vicious circle of slowing down the flight speed - decreasing altitude - greater drag - further deceleration - faster altitude reduction is generated, which threatens the safety of spacecraft in orbit.
According to our spacecraft orbit change prediction service for the Fengyun satellite, the geomagnetic storm caused the orbit of Fengyun-3G to drop by about 300 meters in a single day, reaching nearly four times the orbital attenuation value under normal conditions. Under the accurate forecast service, the satellite operation and control department has made preparations in advance, so the geodetic magnetic storm has little impact on the operation of Fengyun satellite.
For pigeon players, yesterday's race was not very smooth, the pigeons came home from hundreds of kilometers away with the help of the sun and geomagnetic navigation, the occurrence of geomagnetic storms caused a lot of trouble for these elves to return home, and even some pigeon clubs only had a 10% homing rate that day.
Experienced associations, ONE loft OLF and clubs refer to the pigeon flight index forecast service and choose the right time for the driver to carry out the race according to the geomagnetic activity, so as to avoid unnecessary losses.
This is the seventh time this year that there has been a geomagnetic event at the level of a geomagnetic storm after February 27, March, April and September 19.
According to our latest monitoring and forecast, a light to moderate magnetic storm is likely to occur on December 4 due to the combined influence of the high-speed solar wind in the solar coronal cave and the CME on December 1.
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