Yesterday at 6 pm local time (3 pm in Arizona) pair of large earthquakes occurred in rapid succession along the northern coast of Venezuela...

I enjoyed the opportunity to present in the spring meeting of the National Academy of Sciences Committee on Solid Earth Geophysics Spring Me...

Recently, I pulled together some notes for the SCEC UNREST Field trip in the Carrizo Plain. It was a great conversation to share with the e...

I attended the Tom Hanks, a Remembrance symposium at the USGS in Moffett Field Oct. 17, 2024. It was a great chance to remember Tom, refle...

The fragility of geologic features, such as precariously balanced rocks (PBRs), can be measured by a simple parameter like α. For the case o...

For some "light reading" over the winter break, I have enjoyed a read of oral histories of Clarence Allen (Caltech) and Robert Wal...

In my classes and for research, sometimes it is useful to calculate the scalar seismic moment (M 0 ; basically a geometric measure of the to...

An M6.4 earthquake occurred this morning in SW Nevada 56 km west of Tonopah and 202 km ESE of South Lake Tahoe. It was widely but lightly fe...

Today is the anniversary of the catastrophic great Tohoku Japan earthquake and tsunami of March 11, 2011. While I am not an expert of subduc...

I was cleaning some files yesterday and I found an old exercise I had deployed when I was first teaching Introductory Geology. It was inten...

I have been preparing a lecture and I built some new simple videos flying along the San Andreas Fault. The videos are made by me flying alon...

Over the years, I have maintained a steady obsession with fault scarps. For my Ph.D., I worked on a few aspects of fault-scarp development: ...

I made a movie of structure from motion high resolution view of 1992 Landers California earthquake fault scarp. Video starts with 2012 hills...

The SoSAFE activity was a very successful data gathering and interdisciplinary science rallying activity in the Southern California Earthqua...

Kate Scharer (USGS) , Mike Oskin (UC Davis) and I organized a geochronology workshop for the Southern California Earthquake Center communi...

I had a wonderful trip to Busan, Korea for the Paleoseismology, Active Tectonics, and Archeoseismology (PATA Days) meeting . I really enjo...

Many of my students and colleagues and I just returned from the 2014 Southern California Earthquake Center meeting . It was really great: so...

This is quite interesting and unusual historically. There was an earthquake in SE Arizona near the New Mexico border at about 10 pm local ti...

In July 2013, Gayatri Marliyani and I taught a short course at LIPI in Bandung, Indonesia on Techniques in Active Tectonic study. I put t...