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Beroza Delivers First Brinson Lecture |
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Friday, 25 April 2008 |
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Photo: Stanford University
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Greg Beroza of Stanford University delivered the first Brinson Lecture on Wednesday, 23 April, in the Greenewalt Building Lecture Hall. Beroza’s talk, entitled “Episodic Tremor and Slip: Close Relatives in the Slow Earthquake Family” focused on the presentation of evidence that episodic tremor and slow-seismic-slip earthquakes are both members of a family of unusually slow earthquakes—discovered about 30 years ago from records of DTM strainmeters installed in Japan. Unlike ordinary earthquakes that grow explosively in size with increasing duration, slow earthquakes, whether large or small, grow at a constant rate. Their presence on the deep extension of large faults puts them in a position to trigger large, dangerous earthquakes. According to Beroza, the recent discovery of slow earthquakes and their impact points to the importance of the field of earthquake science for further fundamental discoveries.
The Brinson Lecture Series, sponsored by the Brinson Foundation, is intended to highlight innovative work in the field of earthquake seismology, with a special focus on new methods for observing temporal changes in the nature of fault zones and for characterizing conditions that lead to earthquakes. The program provides an opportunity to foster innovative collaborations between the speakers and DTM scientists.
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