Walrus Haulout Audio Recordings Near Point Lay 2024

This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the approach path of aircraft servicing the Point Lay runway from and to the west. Audio recording were analyzed for the presence of walrus and a summary table of events is available with this data release.
During the course of recording the walrus herd shifted south to within 40 m of the herd recorder. Specific herd locations interpreted from drone survey imagery, herd outlines, and satellite imagery are available to view in USGS data releases: Fischbach et al. 2025, https://doi.org/10.5066/P1CNBKN8,; Fischbach 2025, https://doi.org/10.5066/P1BFYBHG; and Fischbach and Douglas 2022, https://doi.org/10.5066/P9CSM0KN, respectively. Specific approach paths for aircraft arriving to and departing from Point Lay are published by the FAA. Three approach procedure charts for the Point Lay runways are available in FAA 2024.

本数据集包含2024年9月于阿拉斯加州莱伊角（Point Lay）一处大型海象聚居地附近采集的全套音频录音。本次录制采用Song Meter Mini 2（Wildlife Acoustics, Inc., 马萨诸塞州梅纳德市），设置两个采样站点：其一距离岸边休憩的大型海象群不足150米，其二位于该海象群以南逾4公里处，恰好处于往返莱伊角跑道的航空器进离场航线正下方。本数据集附带针对海象发声的音频分析结果及事件汇总表。

录制期间，该海象群向南迁移至距离对应录制站点仅40米的区域。通过无人机测绘影像、海象群轮廓图及卫星影像解译得到的海象群具体位置，可在美国地质调查局（USGS）公开数据发布成果中查阅：分别为Fischbach等（2025）的成果（https://doi.org/10.5066/P1CNBKN8）、Fischbach（2025）的成果（https://doi.org/10.5066/P1BFYBHG），以及Fischbach与Douglas（2022）的成果（https://doi.org/10.5066/P9CSM0KN）。往返莱伊角的航空器具体进离场航线由美国联邦航空管理局（FAA）发布，莱伊角跑道的3套进离场程序图可参考FAA 2024年公开资料。