LATEST UPDATE ON EPISODIC SLOW SLIP AND DEEP TREMOR (ETS)

Slow Slip affecting southern British Columbia and northern Washington have been occurring every 14 months or so over the last 15 years. The PNSN has deployed additional seismometers to record expected tremor events to gain insight into the process and into the stresses that eventually will lead to the region's next major earthquake. Many different techniques are used to study this phenomenon. A semi-automatic tremor location process has been developed recently that now has a web interface called an Auto-tremor map.

The next slow earthquake (ETS) started on Aug 8, 2010 in the central Puget Sound region and is being recorded by a special Array of Arrays experiment.