Category Archives: palaeomagic

AGU Dispatches: Convergence, the Caribbean and Cosmic Impacts (not)

Posted on December 6, 2012 by Chris Rowan

AGU is all about pacing yourself. If you want to make it to the end of the week without your brain exploding from an overload of new science, you need to give it some down time. It was for this … Continue reading →

Categories: conferences, earthquakes, geohazards, palaeomagic

AGU Dispatches: Posters and Pontification

Posted on December 5, 2012 by Chris Rowan

There are two main ways to get your science at AGU: by sitting in on one of the dozens of sessions of themed talks, or browsing the monstrous poster hall in Moscone South. I spent Tuesday morning mostly wandering around … Continue reading →

Categories: academic life, conferences, palaeomagic, public science

AGU Dispatches: Superchrons and subduction

Posted on December 4, 2012 by Chris Rowan

I started the day with my paleomagician’s hat on, sitting in on a session looking at the long term behaviour of the Earth’s dynamo. Changes in the strength and reversal frequency of the Earth’s magnetic field give a unique insight … Continue reading →

Categories: conferences, palaeomagic, tectonics

Now that’s what I call a geomagnetic storm!

Posted on March 9, 2012 by Chris Rowan

It appears that I was a litte premature with yesterday’s post. Look at what happened to the ambient magnetic field at the two observatories at Boulder and Deadhorse today (the dotted line represents about where the plots I put up … Continue reading →

Categories: geohazards, geophysics, palaeomagic, planets

The Earth weathers another geomagnetic storm

Posted on March 8, 2012 by Chris Rowan

A couple of days ago, the sun got a bit excitable: This large flare produced what is known as a Coronal Mass Ejection (CME), a blob of gas and radiation hurled at high velocities from the surface of the sun … Continue reading →

Categories: geophysics, palaeomagic, planets