It would be interesting to see if there has been any of the following 
trends:

- A shallowing of seismic activity over time, indicated upward migration 
of a magma body...
- Small topographic changes localized around the cone's immediate 
vicinity...
- Changes in gas flow and chemistry showing fresh movement and degassing...

 From what I have heard, none of these seems to be happening, but you 
never know with these things! There are some people using a remote 
sensing technique called InSAR which is a space-based radar 
interferogram of the ground which can detect very small changes in the 
shape of the ground. This type of thing has enormous potential for 
assessing volcanic risk since a change in shape over a broad region can 
be roughly inverted to find the depth of the magma expansion or 
disturbance using the theory of elasticity. Pretty cool stuff.

kArEEm wrote:

> What's everyone's guess about Mt. Hood in Oregon or have you been 
> following? There have been a remarkable number of quakes near the 
> cone. Yesterday morning's swarm started with a M4.8 bang and it was 
> followed by at least forty aftershocks.
>  
> Is she telling us something?
>  
> USGS Info 
>  
> Kareem





  
  


It would be interesting to see if there has been any of the following trends:



- A shallowing of seismic activity over time, indicated upward migration
of a magma body...

- Small topographic changes localized around the cone's immediate vicinity...

- Changes in gas flow and chemistry showing fresh movement and degassing...



From what I have heard, none of these seems to be happening, but you never
know with these things! There are some people using a remote sensing technique
called InSAR which is a space-based radar interferogram of the ground which
can detect very small changes in the shape of the ground. This type of thing
has enormous potential for assessing volcanic risk since a change in shape
over a broad region can be roughly inverted to find the depth of the magma
expansion or disturbance using the theory of elasticity. Pretty cool stuff.



kArEEm wrote:

  
  
  
   
  
 
  
 
 
  
 
  
What's
everyone's  guess about Mt. Hood in Oregon or have you been following? There
have been a  remarkable number of quakes near the cone. Yesterday morning's
swarm started  with a M4.8 bang and it was followed by at least forty aftershocks.
 
 
  
 
 
  
Is she telling  us something?
  
 
  
 
 
  
USGS
 Info
 
  
 
 
  
Kareem