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…
USGS Menlo Park: 2016.06.29
I recently gave a talk for the USGS Earthquake Seminar Series at the USGS Earthquake Science Center in Menlo Park. Here is a web page where I post material from my talk, including some background material. Below I present some…
CASEIS 16 – Submarine Paleoseismology along the Lesser Antilles subduction zone
Here is a link to the main research cruise page for the CASEIS 16 Lesser Antilles Submarine Paleoseismology cruise. Our goal is to find turbidites so that we might establish a prehistoric record of earthquakes along this subduction zone. The…
Earthquake Report: East Pacific Rise and Middle America Trench
Yesterday we had an earthquake along the Clipperton fracture zone (CFZ), a transform plate boundary that offsets the northern East Pacific Rise (EPR). I was busy grading so did not get to this until today. Here are the four large…
Earthquake Report: Vanuatu!
We just had a large earthquake in the Vanuatu region, just south of a series of earthquakes from a couple weeks ago. Here is the USGS website for today’s M 7.0 earthquake. I include some figures and animations that I…
Earthquake Anniversary: M 7.8 Gorkha (Nepal) Earthquake
An anniversary is for the Gorkha (Nepal) Earthquake from 1 year ago. I have several Earthquake Reports listed below. These include a variety of observations and comparisons with historic and prehistoric earthquakes that I compiled. USGS slip models: http://earthjay.com/?p=2478 First…
Earthquake Report: Ecuador Update #1
Here is an update to my preliminary report about the M 7.8 subduction zone earthquake in Ecuador. Here is my first report. More information about this earthquake is on that report page. Here is the USGS website for the M…
Earthquake Report: Ecuador!
We just had a large earthquake along the coast of Ecuador. Here is the USGS website for the M 7.8 earthquake. Below is my Earthquake Report Poster. I plot the USGS moment tensor for this earthquake, along with the Modified…
Earthquake Report: Japan Update #2
Here is an update to the seismicity from the past couple of days in Kyushu Japan. On 2016/04/14 there was an earthquake with magnitude M 6.2 that initiated this series of earthquakes. The largest aftershock was a magnitude M 6.0.…