Category Archives: geophysics

We have a seismometer in our basement…

Or, more accurately, my department does. And it rather handily picked up last week’s magnitude 8 earthquake near the Santa Cruz Islands (subject of the latest Friday Focal Mechanisms), all the way over in the southwest Pacific. Here’s the seismogram: … Continue reading

Categories: earthquakes, geophysics

Earthly and Unearthly Beauty

NASA unveiled a couple of rather beautiful things at AGU last week – and despite actually being at the conference, I haven’t really had the time to sit back and appreciate them until now. The first was the ‘Black Marble’, … Continue reading

Categories: climate science, geology, geophysics, photos, planets

AGU Dispatches: Final Day and Final Thoughts

Unless you are presenting, the final day of a 5 day-conference can be a test of your intellectual fortitude: it can be tough to force your tired and stuffed-with-cool-new-science brain to take an interest in any more talks or posters. … Continue reading

Categories: academic life, conferences, earthquakes, geohazards, geology, geophysics, tectonics

Now that’s what I call a geomagnetic storm!

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

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