Category Archives: subduction

Earthquake Report: central Aleutians

A couple days ago, in my inbox, there was an email from the Pacific Tsunami Warning Center about an earthquake along the Aleutian Islands, near Rat Island, Alaska. However, this earthquake was not along the megathrust subduction zone fault there … Continue reading

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

Earthquake Report: Peru

On 01 March 2019 there was an intermediate depth earthquake near the border of Peru and Bolivia. In the past century, this is the first earthquake in this area at this depth. There are some historic quakes to the east, … Continue reading

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

Earthquake Report: Ecuador

Well, as I was getting up this morning, my social media feed was abuzz about the intermediate depth earthquake in Peru. While it was quite deep (

Posted in earthquake, education, plate tectonics, subduction

Earthquake Report: Guatemala and Mexico

This morning (my time) there was a moderately deep earthquake along the coast of southern Mexico and northern Guatemala. Here is my Temblor article about this M=6.6 earthquake and how it might relate to the 2017 M=8.2 quake. Offshore of … Continue reading

Posted in caribbean, earthquake, education, Extension, geology, mexico, pacific, plate tectonics, subduction

Earthquake Report: Chile

There was a very interesting earthquake in central coastal Chile yesterday. I spent some time putting together a Temblor article about it. I also took the opportunity to create an interpretive poster in portrait format to help with people using … Continue reading

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

Earthquake Report: 2018 Summary

Here I summarize Earth’s significant seismicity for 2018. I limit this summary to earthquakes with magnitude greater than or equal to M 6.5. I am sure that there is a possibility that your favorite earthquake is not included in this … Continue reading

Posted in africa, alaska, arctic, asia, atlantic, caribbean, cascadia, collision, earthquake, education, geology, Indonesia, landslides, mediterranean, mexico, pacific, plate tectonics, subduction, Transform, tsunami, volcanoes

Earthquake Report: Philippines

Earlier there was an earthquake in the Philippines. This magnitude M = 7.0 earthquake is related to the subduction zone that forms the Philippine trench (where the Philippine Sea plate subducts beneath the Sunda plate). Here is the USGS website … Continue reading

Posted in earthquake, pacific, plate tectonics, subduction

Earthquake Report: Bering Kresla / Pacific plate

We just had a large earthquake in the region of the Bering Kresla fracture zone, a strike-slip fault system that coincides with the westernmost portion of the Aleutian trench (which is a subduction zone further to the east). At first, … Continue reading

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

Earthquake Report: Greece

Well, I was about to head to town and noticed a magnitude M = 5.0 earthquake in Greece. I thought to myself, I wonder if that is a foreshock. It was. Then, the M 6.8 mainshock hit while i was … Continue reading

Posted in College Redwoods, earthquake, education, geology, mediterranean, strike-slip, subduction

Earthquake Report: New Britain!

Just a few hours ago there was a subduction zone megathrust earthquake along the New Britain Trench in the western equatorial Pacific Ocean. In this region of the world, the Solomon Sea plate and the South Bismarck plate converge to … Continue reading

Posted in College Redwoods, education, geology, pacific, plate tectonics, subduction