We have submitted our raw acoustic (Tracy_6230.zip, Aug_6229.zip, Sep_6229.zip) and oceanographic data (SBE37SM-RS232_03715517_2023_08_02_headers.txt), which was collected in Inglefield Bredning Fjord, Northwest Greenland; Aug 2022 - Jul 2023).

Please note that the second half of this dataset (Part B, specifically, data for Oct 2022 ~ Jul 2023 @ sensor #6229) is available at:

https://doi.org/10.5061/dryad.5tb2rbpch

Description of the data and file structure

For recording sound, Soundtrap#6229 was deployed near the calving front of Bowdoin Glacier (77.67 deg N, 68.63 deg W; water depth = 192 m). SBE37SM was co-located with it and sampled every 5 mins at depth = ~170 m. Soundtrap#6230 was located in a fjord of Tracy Glacier (77.63 deg N, 67.08 deg W; water depth = 402 m). The sound recorders were programmed to store 4.5 minutes of continuous sound every 20 minutes at a sampling rate of 64 kHz.

Zipped acoustic data is stored in standard audio files (e.g., 6229.220806030000.wav), where each file name corresponds to a recorder's serial number and UTC time stamp (XXXX.YYMMDDHHmmss.wav). The CTD data (SBE37SM) is stored in a single *.txt file with a UTC time stamp.

Our data is structured in the following way:

Tracy_6230.zip

Contains all audio files (6230.*.wav) recorded between August and November 2022 by Soundtrap#6230 at Tracy Fjord. For example,  

6230.220810000000.wav - contains 4.5 minutes of acoustic amplitudes [re. Pa], like every other file.

Aug_6229.zip

Contains audio files recorded in August 2022 by Soundtrap#6229 at Bowdoin Fjord. For example,  

6229.220810000000.wav - contains 4.5 minutes of acoustic amplitudes [re. Pa], like every other file.

Sep_6229.zip

Contains audio files recorded in September 2022 by Soundtrap#6229 at Bowdoin Fjord. For example,  

6229.220910000000.wav - contains 4.5 minutes of acoustic amplitudes [re. Pa], like every other file.

SBE37SM-RS232_03715517_2023_08_02_headers.txt

Contains oceanographic physical variables recorded by SBE37SM between August 2022 and July 2023 near Soundtrap#6229 at Bowdoin Fjord. The variables and their units are:

Cond0S/m = Conductivity, [S/m]

Density00 = Density, [kg/m^3]

DepSM = Depth, [m]

N2satML/L = Nitrogen Saturation [ml/l]

OxsolML/L = Oxygen [ml/l]

Potemp090C = Potential Temperature, [deg C]

PrdM = Pressure, Strain Gauge [db]

Sal00 = Salinity, [SU]

Scan = sample number, [-]

SvCM = Sound Velocity [m/s]

Specc = Specific Conductance [uS/cm]

Tv290C = Temperature [ITS-90, deg C]

Code/Software

Acoustic data files *.sud were converted to *.wav using the free software SoundTrap Host (Release 4.0.17), which is offered at http://oceaninstruments.co.nz/downloads/(opens in new window). Data processing and visualizations were made with commercially available Matlab R2022b, Kaleidoscope Pro 5.6.2, and Raven (Lite 2.0 is openly available).