Author Archives: AndyB

About AndyB

Andy Biggin is a researcher interested in the behaviour of the ancient geomagnetic field and what this can tell us about the Earth's interior. He has been based at the the University of Liverpool's Geomagnetism Lab since 2009.

DEEP gets underway

Determining Earth Evolution from palaeomagnetism (DEEP) is the new group formed within the University of Liverpool as a result of funding from The Leverhulme Trust. This exciting project will see us attempting to significantly improve global records of geomagnetic behaviour … Continue reading

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A mechanically driven dynamo?

  All the standard text books say that Earth’s magnetic field is driven by convection. But what if it isn’t? I recently attended the SEDI (Studies of Earth’s Deep Interior) meeting in Nantes, France and was impressed by the work … Continue reading

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An Andy Warhol Moment for Liverpool’s Geomagnetism Group?

Pop-artist Andy Warhol famously stated that: “In the future, everyone will be world-famous for 15 minutes”. I suspect that yesterday may be the closest we will ever get to proving him right. A paper on which I am lead-author claims … Continue reading

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How do we know the magnetic field comes from inside?

Recently, I received an interesting email from Dmitry who wrote the following: “According to the Dynamo theory Earth’s magnetic field is generated by rotating, convecting and electrically conducting fluid that maintain a magnetic field. But what if it creates just by … Continue reading

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From Russia with Rocks (and a suitcase full of prezzies…)

I have just returned from my first trip to Russia and the Moscow and Borok Labs. There was originally supposed to be fieldwork in southern Siberia this Summer: sampling rocks with the hope they would tell us about the Earth’s … Continue reading

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New paper in G-Cubed to improve consistency in measurements of the ancient magnetic field strength

Geochemistry, Geophysics, Geosystems (G3 or G-Cubed) is an online-only journal of the American Geophysical Union (AGU). It’s format means it is perfect for publishing papers with large supplementary information or appendices. That is definitely the case for this latest publication, lead-authored … Continue reading

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Killer LIPs? Not so fast…

Certain mass extinction events, including the largest ever 250 million years ago, have been argued to have been triggered by the eruption of “large igneous provinces” (LIPs) – humongous plateaux comprising stacks of lava flows that erupted in relatively short amounts … Continue reading

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The magnetic field is fluctuating as it falls…

We just published a new paper lead-authored by Lennart de Groot at Utrecht University who just recently got his PhD “Cum Laude” (quite a distinction). The paper is online here and I’ve tried to summarise it below. The Earth’s magnetic … Continue reading

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SWARM launch 14th November 2013

SWARM is a long awaited ESA satelite mission to measure the geomagnetic field using magnetometers deployed on three separate but identical satelites. They have a nice blog showing the build-up to the launch and with links to the mission details: … Continue reading

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Magnetic Personalities – inner core temperature

The paper we discussed in the latest meeting of Magnetic Personalities and which motivated the piece below was Anzellini et al. (2013; Science) “Melting of Iron at Earth’s Inner Core Boundary Based on Fast X-ray Diffraction”. They estimate the temperature of … Continue reading

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