Ocean sound levels in the northeast Pacific recorded from an autonomous underwater glider.

Autor: Haxel JH; Oregon State University and NOAA Pacific Marine Environmental Laboratory, Newport, Oregon, United States of America., Matsumoto H; Oregon State University and NOAA Pacific Marine Environmental Laboratory, Newport, Oregon, United States of America., Meinig C; NOAA Pacific Marine Environmental Laboratory, Seattle, Washington, United States of America., Kalbach G; Department of Natural Sciences, California State University of Monterey Bay, Marina, California, United States of America., Lau TK; Oregon State University and NOAA Pacific Marine Environmental Laboratory, Newport, Oregon, United States of America., Dziak RP; NOAA Pacific Marine Environmental Laboratory, Newport, Oregon, United States of America., Stalin S; NOAA Pacific Marine Environmental Laboratory, Seattle, Washington, United States of America.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2019 Nov 20; Vol. 14 (11), pp. e0225325. Date of Electronic Publication: 2019 Nov 20 (Print Publication: 2019).
DOI: 10.1371/journal.pone.0225325
Abstrakt: Ocean gliders are a quiet and efficient mobile autonomous platform for passive acoustic monitoring and oceanographic measurements in remote marine environments. During July 20-August 6 2012, we used a Teledyne Webb Research Slocum G2 glider equipped with a hydrophone logging system to record ocean sound along a 458 km north to south traverse of the outer continental shelf break along the U.S. Pacific Northwest coast. Glider derived recordings yielded a unique perspective on the variation of ambient sound with depth, where natural wind generated surface processes were identified as a dominant acoustic contributor to spectral levels in the region. Near and far-field vessel radiated noise were also found to add significant energy to ambient conditions. Spatially distributed measurements of ambient sound levels recorded from the glider were consistent with long-term spectral estimates from fixed station, deep ocean hydrophone array measurements during the 1990-2000's in the region. Ocean sound level measurements captured by a mobile glider are shown to be an effective and valuable asset for describing ocean surface wind conditions and characterizing spatial and temporal changes in the underwater acoustic environment over a broad regional scale.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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