TSMC Factories Evacuated After 6.1 Magnitude Quake in Taiwan

Mar 27, 2013 Full story: Bloomberg

Taiwan Semiconductor Manufacturing Co. evacuated factories after a magnitude 6.1 earthquake struck central Taiwan's Nantou county at 10:03 a.m. Buildings shook in Taipei, about 153 kilometers from the epicenter.

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“Geologist [I'm Climate Change]”

Since: Mar 07


#1 Mar 27, 2013
Saw this one on the NEIC website.

Location puts it in the inner forearc on the W. side of the Taiwan Zygomorph which is in collision with the South China block and has been uplifted compered to the forearc on the E. side which is still submarine.

The interest here is that the last Rebound/long duration Mercalli X (r/lx) and big tsunami here hit the W.megathrust which is still recompressing and hosts the bulk of the Taiwanese earthquakes.

This was not a big recompression quake. In the precursors to the big ones (7+) the Taiwanese politicians tend to go gaga and start trying to punch each other's lights out in the parliament building; (keep watching that space...).

Next r/lx in Taiwan is likely several centuries away, but volcanism in the central Zygomorph arc between the 2 forearc wedges (E. of the main island) is still possible despite the lengthy volcanic gap in the last century; (another space to watch).

For r/lx and bloody great big tsunami, the bit to watch is the Central-North Luzon zygomorph (N. of the plains area covered by the pinatubo ash fallout, & S. of the Babuyan islands). That area has been responsible in the past for 2 major tsunami deposits in Vietnam, and either of the 2 megathrusts (or both), are due to go "pop" relatively soon.
All the volcanoes in that part of the zygomorph are now dormant as a result of the feeding fractures for the volcanoes now being squeezed flat, with the only remaining magma in the high level chambers.

Have a nice day: Ag

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