Lat: 48 37.69N; Lon: 123 13.26W 1248 Making about 7kts toward Kellet Bluff.
One of the frustrations of a sensitive hydrophone is that any abrasion of the cable against the hull of the boat results in quite a bit of noise. You can hear some of that in the last third of the recording, below. I’m crafting a fleece-padded outrigger in an attempt to mitigate this.
Listen here (1.1MB)
J’s and L’s between Williamson Rock and Lawson Reef, southbound around 1600, July 7. This is the most active part of the recording, with some strong echolocation clicks and whistles. The predominant noise (low-rev “clanking”) is from a tanker in the shipping lanes, about 3 miles away.
Listen here (1.4MB)
Posted in Research
Tagged echolocation, frequency response, recording, whale calls