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

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 <strong>SoundTrap</strong> 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 2019, 14:30:26, 77.487211, -68.483834 20 July 2019, 15:10:13, 77.495954, -68.658084 ******************* Geographic position of each measurement with <strong>Sony-AquaSound</strong> is as the following: Date, Record Start Time(UTC), lon, lat, 19 July 2019, 13:05:33, 77.474752, -68.660610 19 July 2019, 13:22:14, 77.488215, -68.597227 19 July 2019, 16:11:54, 77.523033, -68.403958 19 July 2019, 19:09:11, 77.618543, -68.564536 20 July 2019, 13:04:42, 77.527026, -68.534285 20 July 2019, 14:01:42, 77.505033, -68.553648 20 July 2019, 15:11:10, 77.495954, -68.658084 21 July 2019, 22:17:04, 77.675334, -68.636040 21 July 2019, 22:19:53, 77.671904, -68.639090 22 July 2019, 00:12:34, 77.525553, -68.442136 27 July 2019, 13:28:58, 77.617588, -68.597946 27 July 2019, 14:13:59, 77.667788, -68.643976 27 July 2019, 15:56:33, 77.665487, -68.778195 27 July 2019, 17:03:04, 77.672426, -68.658150 27 July 2019, 17:22:16, 77.669874, -68.657587 27 July 2019, 17:59:39, 77.676941, -68.664817 27 July 2019, 19:44:32, 77.668669, -68.656365 27 July 2019, 21:57:07, 77.628218, -68.637347 27 July 2019, 23:07:12, 77.625571, -68.616875 28 July 2019, 00:02:41, 77.619299, -68.595757本数据集为2019年7月于丹麦格陵兰西北部巴芬湾的英格尔菲尔德布雷达宁湾（Inglefield Bredning）和鲍登峡湾（Bowdoin fjords）中，由船只悬挂的两台水听器（hydrophone）采集得到的声学数据（格式为.wav），用于水下声景记录（涵盖独角鲸发声与各类环境声源）。 ******************* 第一套采集系统采用AquaSound公司出品的AQH-020型水听器（AquaSound Inc.，响应频段20Hz–20kHz），搭配该公司生产的Aquafeeler III型放大器（SQE-1001B，增益50dB），以及索尼（Sony）PCM-M10型录音机（采样率44.1kHz，采样深度16bit，自动模式）。本次采集的布放深度约为6.6m，仅2019年7月27日15:56:33的采集数据布放深度约为0.5m。采集通道数为2，但仅“左声道/第1声道”存有有效数据，“右声道/第2声道”仅存在电噪声。数据文件命名格式为：sony.YYMMDDhhmmss.wav。需注意，两个数据文件（sony.190719130533.WAV、sony.190719132214.WAV）中出现的强周期性脉冲声，并非由附近鲸类产生，而是水听器与压载绳在强流中反复碰撞所致。该问题通过调整绳长得到解决，后续采集未再出现此类噪声。 ******************* 第二套采集系统采用Ocean Instruments NZ出品的SoundTrap SD3000型水听器（响应频段20Hz–60kHz），该设备集成了放大器与采集模块，采样率为96kHz，采样深度为16bit。此编号为5146的设备工作于高增益模式，其声压转换常数为176.2dB。本次采集的布放深度约为10.8m，仅2019年7月20日00:44:47至08:44:47期间的采集数据布放深度约为1m。采集通道数为1。数据文件命名格式为：5146.YYMMDDhhmmss.wav。 ******************* 两套采集系统的各次采集记录对应的坐标信息如下。 采用SoundTrap设备的各次采集点位信息如下（格式：日期、UTC起始记录时间、经度、纬度）： 2019年7月19日 12:55:17, 77.474752, -68.660610 2019年7月19日 13:19:53, 77.488215, -68.597227 2019年7月19日 14:19:53, 77.485103, -68.574985 2019年7月19日 16:19:41, 77.523033, -68.403958 2019年7月19日 19:06:57, 77.618543, -68.564536 2019年7月20日 00:44:47, 77.548649, -68.550752 2019年7月20日 13:02:59, 77.527026, -68.534285 2019年7月20日 14:30:26, 77.487211, -68.483834 2019年7月20日 15:10:13, 77.495954, -68.658084 ******************* 采用Sony-AquaSound采集系统的各次采集点位信息如下（格式：日期、UTC起始记录时间、经度、纬度）： 2019年7月19日 13:05:33, 77.474752, -68.660610 2019年7月19日 13:22:14, 77.488215, -68.597227 2019年7月19日 16:11:54, 77.523033, -68.403958 2019年7月19日 19:09:11, 77.618543, -68.564536 2019年7月20日 13:04:42, 77.527026, -68.534285 2019年7月20日 14:01:42, 77.505033, -68.553648 2019年7月20日 15:11:10, 77.495954, -68.658084 2019年7月21日 22:17:04, 77.675334, -68.636040 2019年7月21日 22:19:53, 77.671904, -68.639090 2019年7月22日 00:12:34, 77.525553, -68.442136 2019年7月27日 13:28:58, 77.617588, -68.597946 2019年7月27日 14:13:59, 77.667788, -68.643976 2019年7月27日 15:56:33, 77.665487, -68.778195 2019年7月27日 17:03:04, 77.672426, -68.658150 2019年7月27日 17:22:16, 77.669874, -68.657587 2019年7月27日 17:59:39, 77.676941, -68.664817 2019年7月27日 19:44:32, 77.668669, -68.656365 2019年7月27日 21:57:07, 77.628218, -68.637347 2019年7月27日 23:07:12, 77.625571, -68.616875 2019年7月28日 00:02:41, 77.619299, -68.595757