Category Archives: subduction

Earthquake Report: Mendocino triple junction

Well, it was a big mag 5 day today, two magnitude 5+ earthquakes in the western USA on faults related to the same plate boundary! Crazy, right? The same plate boundary, about 800 miles away from each other, and their … Continue reading

Posted in cascadia, earthquake, education, geology, gorda, humboldt, mendocino, mendocino, pacific, plate tectonics, San Andreas, strike-slip, subduction, Transform

Earthquake Report: Salt Lake City

As I was waking up this morning, I rolled over to check my social media feed and moments earlier there was a good sized shaker in Salt Lake City, Utah. I immediately thought of my good friend Jennifer G. who … Continue reading

Posted in cascadia, earthquake, education, geology, gorda, humboldt, mendocino, mendocino, pacific, plate tectonics, San Andreas, strike-slip, subduction, Transform

Earthquake Report: Mendocino fault

I was in Humboldt County last week for the Redwood Coast Tsunami Work Group meeting. I stayed there working on my house that a previous tenant had left in quite a destroyed state (they moved in as friends of mine). … Continue reading

Posted in cascadia, earthquake, education, geology, gorda, mendocino, pacific, plate tectonics, San Andreas, San Francisco, strike-slip, subduction, Transform

Earthquake Report: Sunda Strait, Indonesia

Around the beginning of the month, I was helping get a fundraiser prepared for a weekend concert series (audio crew for load in and strike; stage manager during the show). So, I was away from the computers when there was … Continue reading

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

Earthquake Report: Mendocino triple junction

Well, I was on the road for 1.5 days (work party for the Community Village at the Oregon Country Fair). As I was driving home, there was a magnitude M 5.6 earthquake in coastal northern California. https://earthquake.usgs.gov/earthquakes/eventpage/nc73201181/executive I didn’t realize … Continue reading

Posted in cascadia, College Redwoods, earthquake, education, geology, gorda, HSU, humboldt, mendocino, mendocino, pacific, plate tectonics, San Andreas, strike-slip, subduction, Transform

Earthquake Report: Kermadec Trench

There was just an earthquake associated with the plate boundary that forms the Kermadec Trench, a deep oceanic trench that extends north from New Zealand, towards the Fiji Islands. https://earthquake.usgs.gov/earthquakes/eventpage/us6000417i/executive A minor tsunami (~25 cm in size) has been recorded … Continue reading

Posted in earthquake, education, geology, New Zealand, pacific, plate tectonics, subduction, tsunami

Earthquake Report: Chile

This morning (my time) there was a magnitude M 6.4 earthquake offshore of Chile. While it was in the correct location to possibly cause a tsunami, the magnitude was too small. https://earthquake.usgs.gov/earthquakes/eventpage/us600040ja/executive The major plate boundary here is the megathrust … Continue reading

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

Earthquake Report: Peru

Just a moment ago, there was an intermediate depth Great Earthquake (magnitude M≥8.0) beneath Peru. I was heading to bed at about 1:10 local time (Sacramento, CA) when I noticed a tweet from Dr. Anthony Lomax (presenting his first motion … Continue reading

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

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