Category Archives: geology

Earthquake Report: Aleutian Trench

Well, well, well. What have we here. We have some earthquakes that are related to each other and some earthquakes that are not. Less than 2 weeks ago there initiated a sequence of earthquakes along a fault splaying off of … Continue reading

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

Earthquake Report: Cotobato Trench, Philippines

Earlier in April (2017) there was some activity in 4 different regions of the Philippines. Based upon the low magnitudes and large epicentral distances, these earthquakes were most unlikely to be directly related to each other. A couple days ago, … Continue reading

Posted in earthquake, geology, pacific, plate tectonics

Earthquake Report: Chile Update #2

Today the swarm has reminded us to stay vigilant. This region of the Chile subduction zone is pretty active and adjacent to the most active part of the Chile subduction zone. Today there was a series of earthquakes with a … Continue reading

Posted in earthquake, plate tectonics, subduction

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: 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: 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

Earthquake Report: Sumatra!

There were two interesting earthquakes near the northern tip of the Island of Sumatra whilst I was off on a field trip with some HSU geology students. So, I think it prudent to review these earthquakes now. These earthquakes happened … Continue reading

Posted in earthquake, sumatra, Transform