Okay, so I haven't posted on here in quite some time, but I think I need to update.
There has been discussion on other various threads regarding the recent moderate-sized quakes occuring off-shore Vancouver: (the most recent about an
hour ago)
MAP 4.5 2012/05/01 22:53:50 50.683 -129.454 16.0 VANCOUVER ISLAND, CANADA REGION
MAP 3.8 2012/04/29 05:12:21 50.746 -129.741 10.0 VANCOUVER ISLAND, CANADA REGION
MAP 4.5 2012/04/28 03:42:24 50.594 -129.774 15.5 VANCOUVER ISLAND, CANADA REGION
MAP 4.0 2012/04/27 16:22:34 50.707 -129.607 5.0 VANCOUVER ISLAND, CANADA REGION
MAP 4.4 2012/04/27 12:52:47 50.630 -129.696 10.0 VANCOUVER ISLAND, CANADA REGION
MAP 3.9 2012/04/25 06:24:02 50.732 -129.995 27.8 VANCOUVER ISLAND, CANADA REGION
source
SO.....the problem with this, is it seems that USGS is only reporting quakes that are above a certain magnitude. Now this has come up before. I
don't recall all the details, but I know I have discussed it in the past. Typically, USGS is triggered at 4.5 and above, but sometimes they'll be
watching and listing some smaller ones (over 3.5) for the region because, well....perhaps because it is the Northern edge of the Cascadian subduction
zone and may be the only warning we get for the next mega quake???!!!!!
*sigh*....I don't get it. Is it a border thing? Is it an issue with the two countries working together? Or is there really no issue other than
that we, the public don't see the monitoring or communication going on between the different organizations? Because it really bothers me that
USGS/PNSN do NOT list these quakes. I know they are watching. John Vidale (director for PNSN) has been talking about them on the PNSN facebook site
and even provided a link to where we can see the REAL action going on there...it's kinda scary:
Canadian site for quakes near vancouver
There has been a MASSIVE amount this past week. I haven't counted them yet...but I will. I'll guess it's around three dozen or so.
If we were to move this swarm (yes, it is most definately a SWARM) to the region that we often see some 4-5 mag quakes off-shore Oregon, people would
be literally throwing the red flags and running around. But because it is nestled up at the northern edge in Canadian waters.....we hear literally
NOTHING about it. It makes NO sense! Now..it is quite important as to whether these are originating from the subducting plates, or another
well-known fault in the area that is a strike-slip. Problem is...the USGS and the Canadian site don't even have the quakes in the same place. They
are spread around a bit and have different depths. So...what then? Are they coming from both? I dunno, but it would be nice to have some more
discussion on this!
What say you??
If it hadn't been for the incredible shaking that followed, I would have thought one huge lightning bolt had struck
one imaginary huge tree right down the street. The boom was loud and that crackkkkkkkkkk noise was like the ground ripping apart. But when I went out
the next morning all was fine, there was no huge fissure one might expect to see after hearing the ground crack like that. Does any of this sound
familiar? What exactly struck you odd?
