The goal of this study is to help researchers determine their volumes, to translate that into mass. It’s less invasive than actually weighing them. UNAVCO supported ongoing research of Weddell seal populations of McMurdo Sound with TLS data and engineering in November 2013. Two UNAVCO TLS instruments were used in unison to instantaneously collect a high-resolution scan of Weddell seals lying on sea ice.
A novel methodology is being developed for efficient volume estimation of individual Weddell seals during the annual pupping season. In previous attempts, the movement of seals between repeat scans has limited the usefulness of LiDAR to accurately determine seal volume. A proof-of-concept survey was attempted this season to capture a full-coverage seal scan by deploying two scanners in unison. The method is promising for estimating seal volumes more accurately and more quickly than traditional time-intensive survey methods, thereby increasing both the frequency and number of seal volume estimates. These mass measurements (derived from volume) are critical data for this population dynamic research on the Weddell seal, one of the longest running mammal population studies.
For more information: http://www.montana.edu/rgarrott/antarctica/index.htm
