Beaked whale (Mesoplodon densirostris) passive acoustic detection in increasing ambient noise.

摘要: Passive acoustic detection is being increasingly used to monitor visually cryptic cetaceans such as Blainville's beaked whales (Mesoplodon densirostris) that may be especially sensitive underwater sound. The efficacy of passive traditionally characterized by the probability detecting animal's sound emissions a function signal-to-noise ratio. can predicted using accepted, but not necessarily accurate, models environment. Recent field studies combining far-field hydrophone arrays with on-animal recording tags have yielded location and time each emission from tagged animals, enabling in-situ measurements detection. However, tagging only take place in calm seas so do reflect full range ambient noise conditions under which used. Increased surface-generated wind wave interaction degrades ratio animal receptions at given distance leading reduction This paper presents case study simulating effect increasing on M. densirostris foraging clicks recorded whale swimming vicinity deep-water, bottom-mounted array.