Author Archives: Alan

Magnitude 5.6 Earthquake in Oklahoma on September 3, 2016

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences Boston College On September 3, 2016, a magnitude 5.6 earthquake that occurred in Pawnee, Oklahoma, was recorded by Weston Observatory (see seismogram below). This earthquake is tied with another magnitude … Continue reading

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Magnitude 7.0 Earthquake in Japan on April 15, 2016

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences Boston College On a April 15, 2016, a magnitude 7.0 earthquake that occurred on the Kyushu Island of Japan, was recorded by Weston Observatory (see seismogram below). The strong signal … Continue reading

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Students Use BC Library Seismograph to Monitor Earthquakes and Storms, and Test Prototype of Seismographs in Public Places

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences Boston College Weston Observatory and the Boston College Lynch School of Education recently installed a seismograph in the BC O’Neill Library (first floor study area). This seismograph display is a … Continue reading

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Seismic Monitoring of North Korea Nuclear Tests

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences Boston College People have been asking why Weston Observatory didn’t record the recent “seismic event” in North Korea. It was much too small (magnitude 5.1) for us to see it … Continue reading

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Spectrograms: Visualizing How the Frequency of Seismic Waves Varies With Time

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences, Boston College These (very cool, and beautiful, I think) graphics are “spectrograms” of some of our recordings of the magnitude 4.7 earthquake that recently occurred in Oklahoma. The seismograph in … Continue reading

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More (Fracking Related?) Oklahoma Quaking…

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences, Boston College Just this past week alone, there have been 32 earthquakes detected in Oklahoma (magnitude 2.0 to 4.7). Our seismograms and “spectrograms” of today’s magnitude 4.7 quake are shown … Continue reading

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Students Make Their Own Earthquake!

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Do I Think That Fracking Causes Earthquakes?

Alan Kafka Weston Observatory Department of Earth and Environmental Sciences Boston College Note: My analysis presented here is based on what was known about this issue at the time that I wrote this (June 2014). I don’t think the essence … Continue reading

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Clear and Simple Illustration of Mechanism to Explain Earthquakes in the Central and Eastern United States

This is a clear and simple illustration (adapted from the South Carolina Earthquake Education and Preparedness Program) of the commonly accepted “ancient zones of weakness” model for the cause of earthquakes in the Central and Eastern United States (and other … Continue reading

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Please Donate to Support Our Work

If you benefit from these blog posts and feel inspired to contribute to our work, please visit this page and make a donation. At Weston Observatory, we’ve been busy this year envisioning and building an earthquake observatory for the 21st century, … Continue reading

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