-
Archives
- December 2020
- October 2020
- September 2020
- June 2020
- May 2020
- April 2020
- March 2020
- January 2020
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- April 2019
- March 2019
- February 2019
- January 2019
- December 2018
- November 2018
- October 2018
- September 2018
- August 2018
- July 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- July 2016
- June 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- May 2013
- April 2013
- February 2013
- January 2013
- December 2012
- October 2012
- September 2012
- August 2012
- May 2012
- April 2012
- March 2012
- April 1970
-
Meta
Category Archives: research
10/23/2015 Inaugural Cascadia GeoSciences Present
You’re invited to come network with old friends and colleagues, meet new ones, enjoy a locally-made beverage, maybe learn something and share your local knowledge with others. Cascadia GeoSciences presents: A Research Presentation by Todd B. Williams and Dr. Jason … Continue reading
Posted in cascadia, College Redwoods, education, geology, HSU, humboldt, pacific, plate tectonics, research, San Andreas, subduction
Errata for Phantom Earthquakes: USGS
There have been a couple of reported earthquakes that have since been removed from the database. This happens when seismic waves are incorrectly interpreted by the computers, typically from the results of larger magnitude earthquakes. These large magnitude earthquakes can … Continue reading
Posted in Chemeketa Community College, earthquake, education, geology, HSU, plate tectonics, research
Panama Aftershocks Reveal Likely Fault Solution
All rightee… We have a number of aftershocks that are lighting up the potential fault that ruptured a couple days ago. Here is my page for this earthquake. Here is the USGS page. The aftershocks are aligned with the north-south … Continue reading
Posted in College Redwoods, earthquake, education, geology, plate tectonics, research
Vancouver Isle M 6.6 Earthquake
Interesting little swarm here, on the coast of northwestern Vancouver Island. The convergence of these plates results in the Cascadia subduction zone (CSZ), that extends from Cape Mendocino in the South to at least Haida Gwaii in the North (there … Continue reading
Posted in cascadia, College Redwoods, earthquake, education, geology, plate tectonics, research, subduction, tsunami
Another triggered earthquake in the Solomon Islands
This is a very interesting part of the world, where subduction and transform faults interact with each other. The New Britain trench is linked to the New Hebrides trench with a plate boundary fault. Based on plate motions, this could … Continue reading
Posted in College Redwoods, earthquake, education, geology, plate tectonics, research, subduction
Where is waldo?
This earthquake swarm is pretty interesting. We clearly have lots to learn about the tectonics of this region. One of the biggest mysteries yet to be solved is what fault the mainshock occurred on. The M 7.1, reported about early … Continue reading
Posted in College Redwoods, earthquake, education, geology, plate tectonics, research, subduction, tsunami
Panguna, Papua New Guinea: subduction zone earthquake
This looks to have shaken people up, just by looking at the intensity map below. These are generated automatically and take some assumptions that simplify the results (so the real shaking is probably not what the shake map intensity maps … Continue reading
Posted in College Redwoods, earthquake, education, geology, plate tectonics, research, subduction, tsunami
SCSN animation of the seismic waves from the Puente Hills Thrust fault
The Southern California Seismic Network published this animation. Robert Graves, with the URS corporation, created the simulation. The San Diego Super Computer Center also helped. They are all given proper credit in the animation. The animation shows the simulated seismic … Continue reading
Posted in College Redwoods, earthquake, education, geology, plate tectonics, research, San Andreas
Gorda plate earthquake animations
I have put together a couple animations of the earthquake epicenters preceding, during, and following the recent earthquake swarm in the Gorda plate. Here is the first page I put together for this M 6.8 earthquake. Here are some maps … Continue reading
Posted in cascadia, College Redwoods, earthquake, education, geology, humboldt, mendocino, plate tectonics, research, subduction
M 6.4 in the south Sandwich Islands (mmmm sandwich) 2014/3/11
While we were all excited about the local Gorda earthquake, there was an another interesting M 6.4 strike slip earthquake in the region of a recent series of earthquakes in the Scotia Sea. Sometimes earthquakes change the local stress field … Continue reading
Posted in College Redwoods, earthquake, education, geology, plate tectonics, research