PLANET X INCOMING: More than 150 tremors hit Vancouver Island in last 24 hours, Cascadia fault line monitored
PLANET X INCOMING: More than 150 tremors hit Vancouver Island in last 24 hours, Cascadia fault line monitored
Vancouver Island is normally moving toward the Lower Mainland at a
rate of about one centimeter per year. “Ferry fares keep going up but
the distance is actually getting a little bit shorter,” jokes John
Cassidy, a seismologist with the Geological Survey of Canada. But every
14 months or so there is a Tremor and Slip event – a discovery made by
two local scientists Gary Rogers and Herb Dragert – when Vancouver Island slips backward a few millimeters towards Japan.
Seismic recording instruments show Victoria moving in one direction and
then changing direction for about two weeks during these episodes. These
events add pressure to the locked Cascadian Subduction Zone fault. “It
involves tiny tremors that we can record. They are not earthquakes.
People don’t feel these shaking events. But we can easily record them
over many seismic stations at the same time,” said Cassidy. “It looks
like a train or a rumbling.” READ MORE
