subduction - Jay Patton online

Earthquake Report: Japan!

There continue to be earthquakes probably related to the 2011.03.11 Tohoku-Oki M 9.0 earthquake (the 4th largest earthquake recorded on modern seismologic instruments). Here are two excellent summary Earthquake Report pages associated with this region: The original Earthquake Report for…

Earthquake Report: Scotia plate (S. Atlantic)

There was a large thrust earthquake along the Scotia plate today. Here is the USGS website for this M 7.4 earthquake. This is a very interesting region of the world with a very cool history. There is an east verging…

Earthquake Report: New Hebrides / Tonga Update #2

I put together another map that shows these two earthquakes. The M 7.2 earthquake appears to be along a west-northwest striking right lateral strike-slip fault and the M 6.1 appears to be either a steeply or shallowly dipping normal (extension)…

Earthquake Report: New Hebrides Update #1

Well, as I was writing my initial report, some aftershocks hit. My initial report is(here, where I provide more information about the tectonics). At first I interpreted this M 7.2 earthquake as a northeast striking left-lateral strike-slip earthquake. However, these…

Earthquake Report: New Hebrides

There was just a M 7.2 earthquake between New Caledonia and Fiji. There is a strike slip plate boundary fault in this region that connects the New Hebrides Trench with Fiji. Here is the USGS website for this earthquake. Below…

Toast, tsunamis, and the really big one | Chris Goldfinger | TEDxMtHood

Following an article in the New Yorker on July 20, 2015, the Cascadia subduction zone got more attention nationwide than it had ever seen previously. Most in the pacific northwest knew about Cascadia, but this article brought knowledge of the…

#EarthquakeReport Mariana Trench!

Earlier this year, there was an intermediate depth earthquake along the Mariana Trench with a magnitude of M 7.7. I was traveling and did not have the opportunity to prepare a report at the time. While getting together my annual…

Earthquake Report: Bayside (northern California): Update #1

So, I put together another map with today’s earthquake in context with the historic seismicity and some other factors. Now the USGS magnitude is M = 4.7 and there is a moment tensor for this earthquake (that looks very similar…

Earthquake Report: Bayside (northern California)

Well, after installing a stilling basin for our new tide gage installation at Trinidad, CA, I was napping in my upstairs bedroom in Manila, CA. I was awakened by a short (2-3 second) short shaking earthquake. Turns out it was…

Friends of the Arcata Marsh 2016.07.22

I present material about the Cascadia subduction zone for the Friends of the Arcata Marsh (FOAM) held on 7/22/16 at the Arcata Marsh Interpretive Center. This page has some supporting material from this presentation, including the digital presentation file. The…

Category: subduction (page 11)