Author Archives: Jay Patton

Earthquake Report: 1992.04.25 M 7.1 Petrolia

The 25 April 1992 M 7.1 earthquake was a wake up call for many, like all large magnitude earthquakes are. Here is my personal story. I was driving my girlfriend’s car (Jen Guevara) with her and some housemates up to … Continue reading

Posted in cascadia, earthquake, education, geology, humboldt, mendocino, pacific, plate tectonics, San Andreas, subduction, tsunami

Earthquake Report: Chile Update #1

Well, I thought more to compare this ongoing earthquake sequence with the 1985 M 8.0 earthquake. This, in context with the 2010 and 2015 earthquakes. My initial report based upon the M ~4-5.9 swarm is here and my report on … Continue reading

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Earthquake Report: Chile!

Well, we had another earthquake in the region of a recent (yesterday and the day before) swarm offshore of Valparaiso, Chile (almost due west of Santiago, one of the largest cities in Chile). My previous report on the M 4-5 … Continue reading

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Earthquake Report: Chile!

There have been a number of earthquakes along the subduction zone offshore of Chile. These have happened near the boundary of two Great Earthquakes from 2010 and 2015. This region may be a segment boundary along the subduction zone, albeit … Continue reading

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Earthquake Report: Philippines

I put these together earlier this week for me classes and finally have a moment to write about these earthquakes. The Philippines region has been quite active lately, as it frequently is. I show below a series of earthquakes from … Continue reading

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

Earthquake Report: Botswana!

This is a very interesting M 6.5 earthquake, which was preceded by a probably unrelated M 5.2 earthquake. Last September, there was an M 5.7 earthquake in Tanzania along the western shores of Lake Victoria. Here is my report for … Continue reading

Posted in africa, earthquake, Extension, geology, HSU, plate tectonics

Earthquake Report: Gulf California!

There was an earthquake yesterday in the Gulf of California nearby a series of earthquakes that happened in 2015 and earlier in 2013. The 2017 and 2013 earthquakes are happening along a fault that forms the Carmen Basin and the … Continue reading

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Earthquake Report: Kamchatka!

This earthquake happened last night as I was preparing course materials for this morning. Initially it was a magnitude 6.9, but later modified to be M 6.9. This earthquake happened in an interesting region of the world where there is … Continue reading

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

Good Friday Earthquake 27 March 1964

In March of 1964, plate tectonics was still a hotly debated topic at scientific meetings worldwide. Some people still do not accept this theory (some Russian geologists favor alternative hypotheses; Shevchenko et al., 2006). At the time, there was some … Continue reading

Posted in alaska, education, geology, HSU, pacific, plate tectonics, subduction, tsunami

Earthquake Report: Bougainville and Solomons

In the past couple of weeks, there were some earthquakes in the equatorial western Pacific. Here are the USGS websites for the two largest earthquakes in the two regions. 2017.03.04 M 6.1 2017.03.19 M 6.0 The M 6.1 was a … Continue reading

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