Movie 2

Multi-axis jiggling is apparent from camera motion during this deployment on a humpback whale (deployment mn161117-10) when the animal moves at high speed preceding a breach. Clipping of the accelerometer signal is apparent in the 10-90 Hz speed signal (green line), but if the jiggle signal is filtered at a higher frequency, the effect of clipping can be mitigated though not eliminated.

Determining forward speed from accelerometer jiggle in aquatic environments

David E. Cade, Kelly R. Barr, John Calambokidis, Ari S. Friedlaender, and Jeremy A. Goldbogen

Journal of Experimental Biology 2018. 221:None-None; doi: 10.1242/jeb.170449