Zero values usually indicate that the contributing seismic network did not supply the information.
More than 1,000 earthquakes were recorded by regional seismic networks within three weeks of October 20, 2007.
On October 4, 2007, two episodes of ash explosions occurred as recorded by the seismic network.
Corrections or changes in station and amplitude information are reflected by the authoritative seismic network.
This project has the potential to have large benefits to smaller countries that cannot afford a standard seismic network.
Unfortunately, this seismic network has many potential problems.
There are already seismic networks spread out across the world.
In contrast, the current seismic network in California takes 10-15 seconds to detect an earthquake.
This was recorded by the seismic network as an explosion type earthquake with rumbling sounds.
In the 24 hour period, the seismic network recorded 20 volcanic earthquakes.