Originally posted by Valhall
Unless you have information that I'm not privy to, I think we can safely say this is not normal activity.
Its not usual for that region, but its not unusual in terms of earthqauke activity. This region is part of the ring of fire. There are going to be
periods in which there are lots of earth quakes.
Here is a world map of earthquake activity. There are clusters throughout the aleutians, and california.
Any eartquake activity in this region is supposed to be high frequency
There are large plates being subducted right along that boundary, its what created the arc of aleutian islands. Having dozens of earthquakes in a day
is not indicative of a catastrophe.
From here we have intact subducting slab up to 150 km of depth.
Your data indicates that most of these quakes are originating within that zone of intact subducting material. So this activity appears to be simply
related to the subduction of oceanic crust. We except a great amount of activity along in the Aleutian region. That doesn't mean a consistent and
constant high frequency of earthquakes.
any thoughts anyone on why this has not made the news yet??
Because it is not news that there are high rates of earthquake activity in the aleutians.
Rat Islands look familiar?
And there probably will be great earthquakes again at that and other locations. And entire tectonic plate is being forced into the depths of the
earth. There is going to be a great amount of earthquakes there for a very long time.
Also, recall, this is a plate, the movement isn't going to be perfectly transmitted all along the plate, but there should be an increase in activity
at other boundaries, if the plate is moving faster. The Aluetians are part of a global mountain system called the Cordellian Range, which are teh
result of subduction of one plate beneath another and run from Alaska through to Tierro del Fuego.