01287nas a2200169   4500008004100000245007900041210006900120520072400189100002000913700002400933700002000957700001800977700002400995700002601019700002101045856005101066       2018                        eng d00aUnknown beaked whale echolocation signals recorded off eastern New Zealand0 aUnknown beaked whale echolocation signals recorded off eastern N3 a<p>The echolocation signals of most beaked whale species are still unknown. In fact, out of the 22 species comprising the family Ziphiidae, only the echolocation pulses for 7 species have been clearly described. This study describes two distinct beaked whale echolocation signals recorded in the Cook Strait region using passive acoustic technology. These signals differ from previously described Ziphiid species clicks. A description of the time-frequency characteristics of the two signals is provided. Understanding the characteristics of these signals is necessary to correctly identify species from their echolocation signals and enables future monitoring of beaked whales using passive acoustics techniques.</p>
1 aGiorli, Giacomo1 aGoetz, Kimberly, T.1 aDelarue, Julien1 aMaxner, Emily1 aKowarski, Katie, A.1 aMartin, Steven, Bruce1 aMcPherson, Craig  uhttp://asa.scitation.org/doi/10.1121/1.5032127