Sorsalsean's Seismic Eruption

What's it called? Sorsalsean's Seismic Eruption (in short, SSE)

What does it do? This is the famous 'earthquake' spell. After casting, it will make the floor rumble in the room where you're in, and some consequences will be falling on the floor and (others aside from the caster), beign violenty thrown out of the room.
As to its uses, they are quite limited, but real, and similar to other recourses (cfs. priestly rituals) which make people get out of a place you don't want them in. Otherwise, it is just a funny spell which is quite easy to cast as a Circle...
In the past, it was said that the 'falls' could imply some reasonable or even heavy damage. This isn't so anymore.

Where is it? The earth-rumbler is one of the earth-and-rock related spells that lies inside Thee Dyscyplyne of thee Stoane grimoire, at the Unseen University Library.

What does it require? A pebble, which is consumed in the process

What skills do I need? Earth, Evoking, Chanting, Channeling, Dancing

Has it worked? The proper output should read something like this:

You prepare to cast Sorsalsean’s Seismic Eruption.
You stare vaguely at the ground.
You begin to gather geothaumic energy into yourself.
You shout loudly, hoping to transfer the remaining energy into the ground.
With a flick of a finger, you transfer the remaining energy into the ground.
You drop a pebble, and tap your foot impatiently.
An earthquake rips through the room!

Notes:

While it is working, people will be tripping and leaving the room, and you'll get the following output messages from time to time:

(The ground starts to shake violently.)
(The earth roars with ferocious intent.)
A brief sudder indicates that the earthquke is not quite over yet.
An aftershock rips through the ground, shaking the room from side to side.
The earth quivers slightly and then everything is calm again
The earth rumbles in the aftermath of the earthquake.

Help Information:

Sorsalsean's Seismic Eruption - Shake everyone around a bit

Soralsean's Seismic Eruption is a first order offensive spell that involves inserting magic fields beneath the surface of the Disc to disrupt a small area's geothaumic balance. The resulting effect is an earthquake.