CCS - Passive Acoustics 2018 - ST67149836 data

The Ocean Instruments SoundTrap (ST) 300 STD is a compact self-contained underwater hydrophone that was powered by an external battery pack. The ST300 hydrophone was mounted near the top of the benthic landers, and a battery pack mounted in close proximity to the hydrophone. The system recorded long-term underwater ambient noise levels of the CCS study site.\n\nDeployment start date | Deployment end date | Hydrophone serial number | Scheduled recording start (minute) | Period of recording (minute) | Duration of each recording (minute)\tSample rate (kHz) | Lander name\n2018-05-09 | 2018-11-11 | ST67149836 | 00 | 15\t | 4 | 48 | CCS_SF_01\n2018-05-09 | 2018-11-11 | ST67379211 | 00 | 15\t | 4 | 48 | CCS_SF_03\n2018-05-09 | 2018-11-11 | ST67387405 | 00 | 15\t | 4 | 48 | CCS_SF_02\n\nThe SoundTrap hydrophones were factory calibrated by the manufacturer. The standard factory calibration was based on piston phone calibration performed for both low and high gain settings at 250 Hz. The calibration results were made available online by the manufacturer (http://www.oceaninstruments.co.nz/), and obtained by searching for the serial number (Table 1). These end-to-end calibration results represent the Sound Pressure Level (SPL) (dB re 1 μPa) that will result in a normalized (±1.0) ‘wav’ file with a full-scale signal (i.e. 2.0 units peak to peak).\nLineage: Recorded data files were stored as proprietary format ‘sud’ files. These ‘sud’ files can be decompressed to create waveform audio (wav) files containing ambient noise measurements, extensible markup language (xml) files containing sensor metadata, and comma-separated values (csv) files containing ancillary sensor data for later analyses.

海洋仪器（Ocean Instruments）SoundTrap (ST) 300 STD型水听器是一款紧凑型独立式水下水听器，由外置电池组供电。ST300型水听器安装在底栖着陆器（benthic landers）顶部附近，电池组则紧邻水听器布设。该系统记录了CCS研究区域的长期水下环境噪声水平。

部署开始日期 | 部署结束日期 | 水听器序列号 | 计划录制起始时刻（分钟） | 录制周期（分钟） | 单次录制时长（分钟） | 采样率（kHz） | 着陆器名称
2018-05-09 | 2018-11-11 | ST67149836 | 00 | 15 | 4 | 48 | CCS_SF_01
2018-05-09 | 2018-11-11 | ST67379211 | 00 | 15 | 4 | 48 | CCS_SF_03
2018-05-09 | 2018-11-11 | ST67387405 | 00 | 15 | 4 | 48 | CCS_SF_02

该SoundTrap水听器已由制造商完成工厂校准。标准工厂校准基于活塞传声器校准（piston phone calibration）在250Hz下针对低、高增益档位开展的校准工作。制造商已将校准结果发布至官方网站（http://www.oceaninstruments.co.nz/），用户可通过搜索设备序列号获取对应结果（见表1）。此类端到端校准结果对应的声压级（Sound Pressure Level, SPL）单位为dB re 1 μPa，可生成归一化至±1.0的全量程信号（即峰峰值为2.0个单位）的“wav”波形文件。

数据谱系（Lineage）：原始录制数据以专有格式“sud”文件存储。此类“sud”文件可被解压缩，生成包含环境噪声测量数据的波形音频（wav）文件、包含传感器元数据的可扩展标记语言（extensible markup language, XML）文件，以及包含辅助传感器数据的逗号分隔值（comma-separated values, CSV）文件，以供后续分析使用。