Does the Earth produces measurable gravity waves?
Edit: This answer refers to the first version of this question which asked about &quot;gravitational waves&quot;.
Typically, the term &quot;gravitational wave&quot; is reserved for distortions (&quot;strain&quot;) in spacetime, in accordance with General Relativity. Gravitational waves are a property of spacetime and can thus propagate in empty space. In contrast, what you measure here are simply seismic waves, such as pressure waves propagating through Earth and your setup. In fact, seismic waves are the limiting noise that prevents gravitational wave detectors such as aLIGO to measure at lower frequencies, see e.g. this paper for a discussion and plots.