Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2019 Oct 29;9:15477. doi: 10.1038/s41598-019-51222-9

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Vessel tracks and underwater noise levels. (a) Vessel tracks of AIS (blue) and non-AIS vessels (green) within the study area during one tracking period together with (b) recorded underwater noise levels at the three selected frequency bands 0.125, 2 and 16 kHz over the same time. Ambient noise levels calculated as 5^th percentiles over the entire study period are plotted as dashed coloured lines in (b) with values shown on the right side of the plot. Time periods on (b), marked with blue shaded areas, indicate times at which an AIS vessel was present according to vessel tracks shown in (a).