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Plasma Bubble

All articles tagged with #plasma bubble

science-and-technology2 years ago•4 min saved

Tonga's 2022 Eruption Disrupted Satellites and Created Rare Plasma Bubble in Atmosphere

The 2022 Tonga eruption caused a super "plasma bubble" over northern Australia that lasted for hours, impacting GPS across Australia and Southeast Asia. The eruption caused choppy conditions in the ionosphere that lasted a few days, and the size of the waves it generated in the ionosphere were similar in size to those created by geomagnetic storms. The super plasma bubble caused significant delays in the use of precise GPS across northern Australia and Southeast Asia, and its impact on the upper atmosphere and GPS highlights the importance of understanding how the environment impacts the technologies we rely on.

via ScienceAlert|

#gps #ionosphere #plasma-bubble

science-and-technology2 years ago•4 min saved

Tonga's Underwater Volcano Disrupts Satellite Signals Globally

The eruption of the Tonga underwater volcano has been found to disrupt satellite signals halfway around the world by creating an equatorial plasma bubble (EPB) in the ionosphere, severely disrupting satellite-based communications. An international team used satellite- and ground-based ionospheric observations to demonstrate that an air pressure wave triggered by volcanic eruptions could produce an EPB in the ionosphere. The EPB can delay radio waves and degrade the performance of GPS. The team also found that the EPB extended much further than predicted by the standard models, reaching space even beyond the ionosphere.

via Phys.org|

#ionosphere #plasma-bubble #satellite-signals