DECAF - PMFR Minke Whales - Multiple Sensor - Boing Localizations

Early efforts dealing with acoustic data from PMRF involved both manual detection (data set 666 and manual localization (this data set) of boing sounds. These manual detections and localizations provided information necessary in order to assess performance of the automated boing detector and to help understand how to better automatically both detect, associate and localize boing sound source locations. Manual validation of automatic processes is much more efficient (in time and dollars) than the total manual effort such as performed in data sets 666 and 675.

Twenty four boing vocalizations were localized in all – individual animals may make multiple calls. Of these, it is suspected that multiple boings were detected and localized from the same individuals at different times.

This analysis was conducted by James Yosco (Science Applications International Corporation). Localization accuracy for points shown within 15km of sensors is on the order of tens, to hundreds, of meters while the two localizations shown to the extreme north have errors which can be over tens of km. Times are in GMT. Hydrophone locations are only approximate.

The detailed results of the analysis are available at the DECAF web site shown in the supplemental information section.