Fig. 7
From: Identification of animal movement patterns using tri-axial magnetometry
Tri-axial plots of 10Â min of 40Â Hz acceleration data (left hand spheres) and TriMag data (middle and right hand spheres) from (a) an active European badger (Meles meles) (equipped in Northern Ireland with a collar [56]), and (b) an Arabian oryx (Oryx leucoryx) (equipped in Saudi Arabia, again using a collar, Rees-Roderick et al. in preparation). The g-spheres (left) are 3-dimensional plots of static acceleration data, where the distribution of points illustrates the range in postural orientation of the animal in 3D space (see [35]). By comparison, the m-spheres (middle) also show postural information in angular rotation, but reveal how posture varies according to heading. Distribution of data about the NOP (black dashed circle) may be due to variation in postural rotation about a single heading, as is the case for the badger, or by directional rotation in the yaw axes, as seen in the oryx. The frequency distribution of TriMag data (right) highlights the predominant posture or direction associated with the behaviour