Underwater-sound records in glacier fjords (Inglefield Bredning, Baffin Bay, NW Greenland, Denmark), 19-28 July 2019

• Main Author: Evgeny Podolskiy
• Format: Dataset
• Language: English
• Published: 2019
• Subjects: glacier fjord; Greenland; soundscape; hydro-acoustic; narwhal; Baffin Bay; Bowdoin; Inglefield Bredning; Baffin; glacier; narwhal*
• Online Access: https://zenodo.org/record/3402649; https://doi.org/10.5281/zenodo.3402649

Acoustic data (.wav) recorded by 2 hydrophones suspended from boats in Inglefield Bredning and Bowdoin fjords (Baffin Bay, NW Greenland, Denmark) in July 2019 for underwater soundscape documentation (narwhal vocalizations and environmental sources). ******************* First set-up had a hydrophone AQH-020 by AquaSound Inc. (20Hz – 20kHz) connected to Amplifier Aquafeeler III (SQE-1001B, 50dB gain) by AquaSound Inc. and a recorder PCM-M10 by Sony (44.1 kHz, 16 bit, auto-mode). Recording depth was about 6.6 m, except a record collected on July 27, 2019 at 15:56:33 (depth was about 0.5 m). Channels: 2 (but records are only at “Left”/1 channel; the “Right”/2 is electric noise). File name: sony.YYMMDDhhmmss.wav Note that the strongest regularly-spaced impulsive sounds in two files (sony.190719130533.WAV, sony.190719132214.WAV) are seemingly not due to a whale nearby, but due to repetitive impacts of the hydrophone with a ballast-rope in strong current. This issue was fixed by adjusting the rope length, after which the sound was gone. ******************* Second set-up had a hydrophone SoundTrap SD3000 by Ocean Instruments NZ (20Hz – 60kHz), integrated with amplifier and recorder, sampling at 96 kHz, 16 bit. Signal-to-pressure conversion constant was 176.2 dB for this particular device (ID number 5146, at High-Gain mode). Recording depth was about 10.8 m, except records collected on July 20, 2019 between 00:44:47 and 08:44:47 (depth was about 1 m). Channels: 1 File name format: 5146.YYMMDDhhmmss.wav ******************* Coordinates for each record by each set-up are shown below. Geographic position of each measurement with SoundTrap is as the following: Date, Record Start Time(UTC), lon, lat, 19 July 2019, 12:55:17, 77.474752, -68.660610 19 July 2019, 13:19:53, 77.488215, -68.597227 19 July 2019, 14:19:53, 77.485103, -68.574985 19 July 2019, 16:19:41, 77.523033, -68.403958 19 July 2019, 19:06:57, 77.618543, -68.564536 20 July 2019, 00:44:47, 77.548649, -68.550752 20 July 2019, 13:02:59, 77.527026, -68.534285 20 July ...