Category Archives: pacific

Earthquake Report: Peru Update #1

Well, I missed looking further into a key update paper and used figures from an older paper on my interpretive poster yesterday. Thanks to Stéphane Baize for pointing this out! Turns out, after their new analyses, the M 7.1 earthquake … Continue reading

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

Earthquake Report: Peru

We had a damaging and (sadly) deadly earthquake in southern Peru in the last 24 hours. This is an earthquake, with magnitude M 7.1, that is associated with the subduction zone forming the Peru-Chile trench (PCT). The Nazca plate (NP) … Continue reading

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

Earthquake Report: Berkeley, CA (Hayward fault)

There was an earthquake last night (local time) in Berkeley, aligned with the Hayward fault. The Hayward fault is one of the synthetic sister faults to the San Andreas fault, the major player in the dextral (right-lateral, strike-slip) plate boundary … Continue reading

Posted in earthquake, education, geology, pacific, plate tectonics, San Andreas, San Francisco, strike-slip

Earthquake Report: Caroline Ridge Update #1

Well, there was an earthquake this morning (my time) that may help us select a fault plane solution. Recall that these fault plane solutions (moment tensors and focal mechanisms) have two possible fault planes. We need additional information (like fault … Continue reading

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

Earthquake Report: Caroline Ridge

There was an earthquake sequence beginning 2017.12.08 along the northern flank of Caroline Ridge in the western Pacific Ocean, near the intersection of the Mariana and Yap trenches. The two largest earthquakes, M 6.5 and M 6.4, are both strike-slip … Continue reading

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

Earthquake Report: Loyalty Islands Update #1

I just got back from one of the best conferences that I have ever attended, PATA Days 2017 (Paleoseismology, Active Tectonics, and Archeoseismology). This conference was held in Blenheim, New Zealand and was planned to commemorate the 300 year anniversary … Continue reading

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

Earthquake Report: Papua New Guinea!

Well. As I was preparing a job application at the library public wifi (the Airbnb I was staying at did not have wifi in my cabin, nor electricity for that matter), I prepared an interpretive poster for this earthquake. Interestingly, … Continue reading

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

Earthquake Report: Tonga!

Well, I was just getting ready for bed and saw the PTWC email notification. It took a couple minutes before the USGS email notification came through, but the earthquake was already listed on the website. By the time the ENS … Continue reading

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

#Earthquake Report: Loyalty Islands

BOO! Happy Halloween/Samhain…. I am on the road and worked on this report while on layovers with intermittent internets access… Though this earthquake sequence spanned a day or so, so it is good that it took me a while to … Continue reading

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

Earthquake Report: Chiapas Earthquake Update #2

Well, we had a really interesting earthquake today. There was a M 6.1 earthquake in the North America plate (NAP) to the north of the sequence offshore of Chiapas, with the M 8.1 mainshock. Here is the USGS website for … Continue reading

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