Author Archives: Jay Patton

Earthquake Report: Papua New Guinea: Update #1

The aftershocks are still coming in! We can use these aftershocks to define where the fault may have slipped during this M 7.5 earthquake. As I mentioned yesterday in the original report, it turns out the fault dimension matches pretty … Continue reading

Posted in collision, earthquake, education, geology, pacific, plate tectonics

Earthquake Report: Papua New Guinea

This morning (local time in California) there was an earthquake in Papua New Guinea with, unfortunately, a high likelihood of having a good number of casualties. I was working on a project, so could not immediately begin work on this … Continue reading

Posted in collision, earthquake, education, geology, Indonesia, pacific, plate tectonics

Earthquake Report: ¡Oaxaca, Mexico!

There was just now an earthquake in Oaxaca, Mexico between the other large earthquakes from last 2017.09.08 (M 8.1) and 2017.09.08 (M 7.1). There has already been a M 5.8 aftershock.Here is the USGS website for today’s M 7.2 earthquake. … Continue reading

Posted in earthquake, education, geology, pacific, plate tectonics, subduction

Earthquake Report: 1960 Valdivia, Chile M 9.5

In commemoration of the #EarthquakeCup, I have put together a summary for the largest instrumentally recorded earthquake, the M 9.5 1960 Valdivia, Chile Earthquake. The Peru-Chile trench is quite active and generated Great earthquakes (M>8) in 1985, 2010, 2014, and … Continue reading

Posted in earthquake, education, geology, pacific, plate tectonics, subduction

Earthquake Report: 1971 Sylmar, CA

This earthquake was the second earthquake in the state of CA to lead to major changes in how people in the state handled earthquake hazards and risk and today is the 47th anniversary of this earthquake. The first important earthquake … Continue reading

Posted in collision, earthquake, education, geology, los angeles, plate tectonics, San Andreas

Earthquake Report: Mendocino fault

Good Morning Humboldt County! I was in bed checking up on social media stuff and I checked my email. There were two emails from USGS ENS showing a M 5.0 near me. I had not felt it and when I … Continue reading

Posted in earthquake, education

Earthquake Report: Gulf of Alaska UPDATE #2

I thought it would be interesting to see the seismicity with time. Perhaps this could help us learn about the fault sources associated with this earthquake sequence. I am not sure it worked as some issues cannot be dealt with … Continue reading

Posted in alaska, earthquake, education, geology, pacific, plate tectonics, strike-slip, subduction

Earthquake Report: Gulf of Alaska UPDATE #1

Well. What a firestorm of social media discusions about this earthquake. It seems that, like how we learn so much when earthquakes like this happen, the amount of interacting in public on social media has been growing earthquake by earthquake. … Continue reading

Posted in alaska, earthquake, education, geology, pacific, plate tectonics, strike-slip, subduction

Earthquake Report: Gulf of Alaska!

I was asleep in bed, trying to catch up to prevent myself from getting ill, when there was a large earthquake in the Gulf of Alaska (GA), offshore of Kodiak, Alaska. When I wakened, I noticed a fb message from … Continue reading

Posted in alaska, earthquake, education, geology, pacific, plate tectonics, strike-slip, subduction, Transform

Earthquake Report: Gulf of California

Today we had an earthquake with magnitude M 6.3 in the Gulf of California (GOC). The GOC is formed by transtension (extension along a strike-slip fault system) along the North-America-Pacific plate boundary. Transtension happens when the plate motion across a … Continue reading

Posted in earthquake, education, geology, mexico, plate tectonics, strike-slip