Erratum to: Sediment identification using free fall penetrometer acceleration-time histories

The previous acknowledgement of Dr. Robert A. McConnaughey failed to fully represent his contributions to this research. The unpublished FFCPT data and ground truth sediment samples discussed in this paper were acquired as part of his own research. The scientific oversight and technical planning provided by Dr. McConnaughey in his role as Chief Scientist on the 2006 Bering Sea Cruise of the NOAA ship Fairweather were also significant factors in successfully executing and concluding the field validation of the model described in this paper. This was a regrettable mistake that is hopefully resolved with this erratum.