10.1371/journal.pone.0146396.g008 Antoni Burguera Antoni Burguera Gabriel Oliver Gabriel Oliver A polygonal mesh is used to perform the extrapolation. Public Library of Science 2016 map resolutions sensor data echo intensities information sea floor maps subsea region SSS operation map building method echo intensity layer data Sonar SSS model control layers Experimental results echo intensity layer sensor resolution SSS measurement 2016-01-28 04:03:32 Figure https://plos.figshare.com/articles/figure/A_polygonal_mesh_is_used_to_perform_the_extrapolation_/2631982 <p>Each polygon <i>p</i><sub><i>i</i></sub> in the mesh is constructed by joining the acoustic axes of the measurements <i>m</i><sub><i>i</i></sub> and <i>m</i><sub><i>i</i>+1</sub>.</p>