Early this morning my time there was a large earthquake along the San Cristobal Trench, a segment of a convergent plate boundary formed by the subduction of the Solomon Sea plate eastwards beneath the Pacific plate. There was an M…
Earthquake Report: Solomons!
Yesterday there began a swarm of seismic activity along the southern Solomon trench. What began with a M 7.8 earthquake on 2016.12.08, there have been many aftershocks including a M 6.9 this morning (my time). Below is my interpretive poster…
Earthquake Report: Mendocino fault Update #1
Today is one of my busiest days of the semester. I am administering a final and my two classes are presenting their video projects. Then, we had this M 6.5 earthquake in the wee hours and a M 7.7 (prelim…
Earthquake Report: Mendocino fault!
I was awake and just logging into my laptop, still in bed, when I first felt some movement. The movement was slight and not impulsive, so I thought it was a small earthquake. Then the shaking reappeared. This is when…
Earthquake Report: Petrolia (CA)
This morning there was a good shaker that was widely felt across the region. I did not feel it. I was probably driving at the time, or grading papers, which can have the same sense-deadening effect. Here is the USGS…
Earthquake Report: Japan!
While I was returning from my research cruise offshore of New Zealand, there was an earthquake offshore of Japan in the region of the 2011.01.11 M 9.0 Tohoku-Oki Earthquake. Japan is one of the most seismically active regions on Earth.…
Earthquake Report: Kaikōura, New Zealand Post # 01
This is the first of several posts about a complex earthquake series that happened along the northern end of the South Island in New Zealand. I was at sea on the R/V Tangaroa collecting piston cores offshore along the Hikurangi…
Earthquake Report: El Salvador!
While waiting to board my plane from Sydney (AU) to SFO, I put together an interpretive poster for the M 7.0 earthquake offshore of El Salvador from today. I will spend more time later adding more information, including some background…
Getting ready for the cruise!
2016.11.09 Getting ready for the cruise! My main research cruise blog page is here: http://humboldt-jay.blogspot.com. We will be heading to sea to search for submarine landslide deposits called turbidites. There are several ways that these landslides can be triggered. Earthquakes…
Earthquake Report: Laytonville (northern CA)!
This morning there was another earthquake in northern CA between the San Andreas (SAF) and Maacama faults (MF). This region has been active for the past few years, with earthquakes in the M 3-4 range. Most recently, there was a…