Subtle variations in the ionosphere – the electrically charged layer of the upper atmosphere – have emerged as one of the most promising short-term indicators of impending seismic activity. In the ...

Around midday, Earth’s ionosphere sometimes experiences sharp, short-lived dips in its electron density—an unusual phenomenon known as a noontime bite-out. A new study takes a global view of these ...

Ionospheric anomalies, such as increased electron density, lowered ionospheric altitude, and slowed abnormal propagation of medium-scale traveling ionospheric disturbances, have been repeatedly ...

Kyoto, Japan -- Researchers at Kyoto University have proposed a new physical model that explores how disturbances in the ionosphere may exert electrostatic forces within the Earth’s crust and ...