Monthly Archives: April 2014

all right, another M 6.2 aftershock in Chile

While I was writing my post about the M 7.6 aftershock, we got a M 6.2 aftershock. A M 6.2, while still large, is much smaller than a M 7.6. Each step in earthquake magnitude (e.g. from M 5 to … Continue reading

Posted in College Redwoods, earthquake, education, geology, plate tectonics, subduction, tsunami

large magnitude aftershock in northern Chile

There have been many aftershocks in the region of the 4/1/14 M 8.2 subduction zone earthquake offshore Iquique, Chile. There was a swarm of earthquakes up to M 6.7 in the weeks prior to the current main shock, here is … Continue reading

Posted in College Redwoods, earthquake, education, geology, plate tectonics, subduction, tsunami

M 8.2 northern Chile tsunamis recorded at tide gages

Here are some plots from PMEL comparing model predictions with observations at several tide gages in the Pacific Basin. Crescent City, CA Los Angeles, CA Honolulu, HI Hilo, HI Kahului, HI

Posted in College Redwoods, earthquake, education, geology, plate tectonics, subduction, tsunami

Tsunamis in the region of the M 8.2 northern Chile earthquake

Today we had a M 8.2 subduction zone earthquake in northern Chile. I have placed some records of this tsunami here. Here is the National Tsunami Warning Center tusnami travel time map for this tsunami. Here is the National Tsunami … Continue reading

Posted in College Redwoods, earthquake, education, geology, plate tectonics, subduction, tsunami

M 8.2 earthquake in northern Chile

Alright. Lets hope not many people are harmed as a result of this earthquake and likely large tsunami. We all know what to do. Drop, duck, cover, and hold on. Run to high ground. Stay there. Check back here for … Continue reading

Posted in College Redwoods, earthquake, education, geology, plate tectonics, subduction, tsunami, Uncategorized

Fault Model 3-D Animation for La Habra EQ Swarm

Here is a short animation I made to visualize the fault geometry possibly associated with the earthquake swarm in La Habra this past week. I placed 2-D maps of these fault models here. Here is the animation. (~41 MB avi)

Posted in College Redwoods, earthquake, education, geology, plate tectonics, San Andreas

Fault Model in 3-D

Here are a couple maps that I put together to help me visualize a potential fault that may have ruptured in La Habra on 2014/03/29. This is a very quick, coarse, and precursory look. Others have better tools and will … Continue reading

Posted in College Redwoods, earthquake, education, geology, plate tectonics, San Andreas