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Rock samples collected near the Antarctic volcano Mount Erebus, seen here in the distance, harbor fingerprints of Earth’s ancient magnetic field. A new analysis delves into discrepancies between these fingerprints and predictions from a long-standing approximation of the field. Credit: Hanna Asefaw

Antarctic Lava Yields Clues to Earth’s Past Magnetic Field

Geology Page - February 8, 2021

Map of the Earth showing the present-day deviation from expected magnetic field direction. The star is Saint Helena

South Atlantic anomalies existed 8 – 11 million years ago

Earth magnetic field. Credit: Carnegie Institution for Science

How does Earth sustain its magnetic field?

Earth’s geomagnetic field

Earth’s magnetic field can change 10 times faster than previously thought

Next to Prof. Oded Aharonson is the tri-axial Helmholtz Coil used to generate the magnetic field during the growing of the ice samples

The magnetic history of ice

Earth’s magnetic shield is much older than previously thought

Geology Page - July 31, 2015

First measurements taken of South Africa’s Iron Age magnetic field history

Geology Page - July 29, 2015

An improved age for Earth’s latest magnetic field reversal using radiometric...

Geology Page - July 8, 2015

First sensor of Earth’s magnetic field in an animal

Geology Page - June 18, 2015

Astronomers make real-time, 3D movies of plasma tubes drifting overhead

Geology Page - June 2, 2015

Missing link in metal physics explains Earth’s magnetic field

Geology Page - January 28, 2015

Death of a dynamo: A hard drive from space

Geology Page - January 22, 2015

Levitation recreates nature’s dumbbells

Geology Page - January 8, 2015

Electromagnetic waves linked to particle fallout in Earth’s atmosphere, new study...

Geology Page - January 7, 2015

Understanding ancient geomagnetic reversal

Geology Page - December 23, 2014

First harvest of research based on the final GOCE gravity model

Geology Page - November 30, 2014

Turbulence in molten core helps amplify Earth’s magnetic field

Geology Page - November 18, 2014

Earth’s magnetic field could flip within a human lifetime

Geology Page - October 15, 2014

Nuclear magnetic resonance experiments using Earth’s magnetic field

Geology Page - August 20, 2014

Could Pulses in Earth’s Magnetic Field Forecast Earthquakes?

Geology Page - June 21, 2014

Swarm reveals Earth’s changing magnetism

Geology Page - June 20, 2014

Solar wind breaks through Earth’s magnetic field

Geology Page - June 9, 2014

Earth’s magnetic field is important for climate change at high altitudes

Geology Page - May 26, 2014

Magnetic anomaly deep within Earth’s crust reveals Africa in North America

Geology Page - April 3, 2014

Satellite Trio to Explore the Earth’s Magnetic Field

Geology Page - November 23, 2013

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