Earthquake near Taiwan

Well, we just had a swarm of earthquakes with magnitudes near Taiwan. The USGS web pages for these earthquakes are here: M = 6.0, 6.1, and 6.4. This is a complicated tectonic region and there are many different and differing interpretations. Taiwan is at a location where a westward vergent subduction zone (Manila trench) comes from the South and an eastward vergent subduction zone comes from the north (Ryukyu trench). I am getting ready to head to class and then to Pasadena for a Seismological Society of America meeting, so I cannot fully describe the complexity right now. I will try to follow up later.

Here is a map that shows the three earthquake epicenters as they relate to these plate boundary faults.

Here is an oblique view of the plate configuration in this region. This is from Chang (2001).

Here is a great interpretation showing how the Island of Taiwan is being uplifted and exhumed. This is from Lin (2002).

Needless to say, this is an excellent map showing the complicated faulting of this region. This is from Theunissen et al. (2012).

Category(s): Chemeketa Community College, education, geology, HSU, plate tectonics, subduction, tsunami

2 Responses in other blogs/articles

  1. […] We just had an earthquake in southern Taiwan. Here is the USGS website for this M 6.4 earthquake. In April 2015, there was a series of earthquakes in the northeast of Taiwan. Here is my earthquake report for those earthquakes. […]

  2. […] earthquake. In April 2015, there was a series of earthquakes in the northeast of Taiwan. Here is my earthquake report for those earthquakes. In 1999 there was a devastating M 7.7 earthquake in Taiwan called the Chi Chi earthquake. Here is […]

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