Sieberg scale
The Sieberg scale , named after the German geophysicist August Heinrich Sieberg , describes the strength of submarine earthquakes on a six-part scale . Similar to the Mercalli scale, it is based on macroseismic observations.
step | description |
---|---|
I. | Slight, barely noticeable trembling of the ship |
II | Slight shaking of the ship |
III | Jerky shaking of the ship |
IV | Ship begins to sway |
V | "Groan" of the ship, larger objects fall over |
VI | The hull is damaged, risk of sinking |