Exposed porpoise GPS data

• Main Authors: Van Beest, Floris M., Teilmann, Jonas, Hermannsen, Line, Galatius, Anders, Mikkelsen, Lonnie, Sveegaard, Signe, Dalgaard Balle, Jeppe, Dietz, Rune, Nabe-Nielsen, Jacob
• Format: Dataset
• Language: unknown
• Published: Dryad Digital Repository 2017
• Subjects: anthropogenic disturbance; cetaceans; movement; offshore energy; underwater noise; Inner Danish Waters; Phocoena phocoena
• Online Access: https://dx.doi.org/10.5061/dryad.40nv6/1; http://datadryad.org/resource/doi:10.5061/dryad.40nv6/1

This is the full dataset collected by GPS tags fitted on four harbor porpoise individuals. Large positional errors were removed as described in the article. The data also contains the calculated horizontal movement parameters and distance variables to produce figure 1 in the main article and the figures in the Supplementary material. The data contains 10 variables: “id” gives the name of the harbor porpoise individual “datetime” gives the date and time of the GPS location columns “x” and “y” are the coordinates of the GPS location in the projection CRS("+proj=utm +zone=32 +ellps=intl +towgs84=-87,-98,-121,0,0,0,0 +units=m +no_defs") “steplength” is the Euclidian distance (m) between GPS locations “speed” is the speed (m/sec) between GPS locations “turing_angle” is the turning angle (degrees) between GPS locations “hour_since_release” is the time (hours) since the individual was released into the water after GPS tagging “dist_to_exposure_site” is the Euclidian distance (m) of the individual porpoise relative to the airgun exposure site “dist_to_release_site” is the Euclidian distance (m) of the individual porpoise relative to the GPS tagging and release site