Determining bulk distribution of calling depths of bowhead and northern right whales using non-linear signal processing methods in the Beaufort Sea, 2010

The project estimated depths at which bowhead whales made calls, using passive acoustic source data recorded from 2008-2010 at several geographic locations in the Beaufort Sea. Raw acoustic data used were collected by Greenridge Sciences using hydrophones. The Beaufort dataset contains whale calls recorded between August 10-October 10 each year from 2008-2014. The data files contain dates, times, and depths of whale calls, as well as range to closest instrument. The data files for this project include an input file (ASCII text file named ‘inp_file.env’) to the acoustic model that encodes parameters describing the acoustic propagation environment and an output file (ASCII text file named ‘‘Chapter3_inputs_and_outputs.txt’) that combines the inputs from the automated detector program with the final depth estimates from the entire procedure. This data was collected to determine bulk distrubution of calling depths of bowhead whales in the Beaufort Sea.

本项目利用2008-2010年间在波弗特海（Beaufort Sea）多个地理点位采集的被动声源声学数据，估算了弓头鲸（Bowhead whale）发出鸣叫声时所处的水深。本研究所用的原始声学数据由Greenridge Sciences公司通过水听器采集获得。波弗特海数据集包含2008至2014年间每年8月10日至10月10日期间录制的鲸类鸣叫声数据。数据文件收录了鲸类鸣叫声的日期、时间、声源水深以及与最近声学仪器的距离等信息。本项目的数据文件包含两类核心文件：其一为声学模型输入文件（名为`inp_file.env`的ASCII文本文件），该文件编码了描述声学传播环境的各项参数；其二为输出文件（名为`Chapter3_inputs_and_outputs.txt`的ASCII文本文件），该文件整合了自动检测程序的输入数据与全流程最终得到的水深估算结果。本数据集的采集初衷为明确波弗特海海域弓头鲸鸣叫声水深的整体分布特征。