Category Archives: pacific

Earthquake Report: New Ireland

This region of Earth is one of the most seismically active in the past decade plus. This morning, as I was preparing for work, I got an email notifying me of an earthquake with a magnitude M = 7.5 located … Continue reading

Posted in earthquake, Extension, geology, landslides, pacific, plate tectonics, strike-slip, subduction, Transform, tsunami

Earthquake Report: Papua New Guinea

Earlier today, there was an intermediate depth beneath eastern Papua New Guinea (PNG). With a magnitude M = 7.2, this is one of the largest earthquake so far in 2019. Here is the USGS website for this earthquake. Today’s earthquake … Continue reading

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

18 April 1906 San Francisco Earthquake

Today is the anniversary of the 18 April 1906 San Francisco Earthquake. There are few direct observations (e.g. from seismometers or other instruments) from this earthquake, so our knowledge of how strong the ground shook during the earthquake are limited … Continue reading

Posted in earthquake, education, geology, los angeles, pacific, plate tectonics, San Andreas, strike-slip, Transform

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: 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