Swarm mission discovers interannual waves in Earth’s core

Swarm mission discovers interannual waves in Earth’s core

Using information from ESA’s Swarm satellite mission, scientists have discovered a completely new type of magnetic wave that sweeps across the outermost part of Earth’s outer core every seven years. The discovery offers a way to probe the cylindrical radial component of the magnetic field inside Earth’s core.

Unsettled geomagnetic field due to CH HSS influences

Unsettled geomagnetic field due to CH HSS influences

Solar wind parameters in 24 hours ending 12:30 UTC today were indicative of a slightly enhanced and disturbed interplanetary magnetic field (IMF) due to weak coronal hole high speed stream (CH HSS) influences. Total IMF strength was variable, but steadily increased…

Geomagnetic storms reaching G2 – Moderate levels, spotless Sun

Geomagnetic storms reaching G2 – Moderate levels, spotless Sun

Earth is again under the influence of a recurrent, positive polarity, northern extension Coronal Hole High Speed Stream (CH HSS). G1 – Minor geomagnetic storm level threshold was reached at 11:55 UTC, followed by G2 – Moderate at 19:21 UTC. Over the past 24 hours,…

The anomaly in the Earth’s magnetic field which has geophysicists abuzz

The anomaly in the Earth’s magnetic field which has geophysicists abuzz

In this interview, EGU's Laura Roberts Artal speaks with Jay Shah, a Ph.D. student at Imperial College London, who is investigating the South Atlantic Anomaly, a patch over the South Atlantic where the Earth’s magnetic field is weaker than elsewhere on the…

Flying through explosive magnetic phenomenon to understand space weather

Flying through explosive magnetic phenomenon to understand space weather

Analyzing data obtained by four identical spacecraft that passed directly through a magnetic reconnection site on the boundary between the solar wind and Earth's magnetosphere, researchers have observed how this explosive physical process converts stored…

Earth’s magnetic complexity begins to untangle – Swarm mission

Earth’s magnetic complexity begins to untangle – Swarm mission

After a year in orbit, the three Swarm satellites have provided a first glimpse inside Earth and started to shed new light on the dynamics of the upper atmosphere – all the way from the ionosphere about 100 km above, through to the outer reaches of our protective