Discovery of hidden earthquake presents challenge to earthquake early-warning systems

  • November 20, 2015
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Discovery of hidden earthquake presents challenge to earthquake early-warning systems
Seismologists studying the 2011 Chile earthquake have discovered a previously undetected earthquake that took place seconds after the initial rupture. This newly discovered phenomena, which they called a `closely-spaced doublet,' presents a challenge to earthquake and tsunami early warning systems as it increases the risk of larger-than-expected tsunamis in the aftermath of a typical subduction earthquake.

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