Results 1 to 10 of about 1,683 (114)

Ecosystem scale acoustic sensing reveals humpback whale behavior synchronous with herring spawning processes and re-evaluation finds no effect of sonar on humpback song occurrence in the Gulf of Maine in fall 2006. [PDF]

open access: yesPLoS ONE, 2014
We show that humpback-whale vocalization behavior is synchronous with peak annual Atlantic herring spawning processes in the Gulf of Maine. With a passive, wide-aperture, densely-sampled, coherent hydrophone array towed north of Georges Bank in a Fall ...
Zheng Gong   +7 more
doaj   +5 more sources

Detection, Localization and Classification of Multiple Mechanized Ocean Vessels over Continental-Shelf Scale Regions with Passive Ocean Acoustic Waveguide Remote Sensing [PDF]

open access: yesRemote Sensing, 2018
Multiple mechanized ocean vessels, including both surface ships and submerged vehicles, can be simultaneously monitored over instantaneous continental-shelf scale regions >10,000 km 2 via passive ocean acoustic waveguide remote sensing.
Chenyang Zhu   +7 more
doaj   +3 more sources

Continental Shelf-Scale Passive Acoustic Detection and Characterization of Diesel-Electric Ships Using a Coherent Hydrophone Array [PDF]

open access: yesRemote Sensing, 2017
The passive ocean acoustic waveguide remote sensing (POAWRS) technique is employed to detect and characterize the underwater sound radiated from three scientific research and fishing vessels received at long ranges on a large-aperture densely-sampled ...
Wei Huang   +4 more
doaj   +4 more sources

The Effect of Attenuation from Fish on Passive Detection of Sound Sources in Ocean Waveguide Environments

open access: yesRemote Sensing, 2021
Attenuation from fish can reduce the intensity of acoustic signals and significantly decrease detection range for long-range passive sensing of manmade vehicles, geophysical phenomena, and vocalizing marine life.
Daniel Duane   +4 more
doaj   +1 more source

Comparing Performances of Five Distinct Automatic Classifiers for Fin Whale Vocalizations in Beamformed Spectrograms of Coherent Hydrophone Array

open access: yesRemote Sensing, 2020
A large variety of sound sources in the ocean, including biological, geophysical, and man-made, can be simultaneously monitored over instantaneous continental-shelf scale regions via the passive ocean acoustic waveguide remote sensing (POAWRS) technique ...
Heriberto A. Garcia   +6 more
doaj   +1 more source

Vocalization Source Level Distributions and Pulse Compression Gains of Diverse Baleen Whale Species in the Gulf of Maine

open access: yesRemote Sensing, 2016
The vocalization source level distributions and pulse compression gains are estimated for four distinct baleen whale species in the Gulf of Maine: fin, sei, minke and an unidentified baleen whale species.
Delin Wang   +3 more
doaj   +1 more source

Angular Resolution Enhancement Provided by Nonuniformly-Spaced Linear Hydrophone Arrays in Ocean Acoustic Waveguide Remote Sensing

open access: yesRemote Sensing, 2017
Uniformly-spaced apertures or subapertures of large, densely-sampled, discrete linear receiver arrays are often used in remote sensing to increase the signal-to-noise ratio (SNR) by coherent beamforming that reduces noise coming from directions outside ...
Delin Wang, Purnima Ratilal
doaj   +1 more source

Diel and Spatial Dependence of Humpback Song and Non-Song Vocalizations in Fish Spawning Ground

open access: yesRemote Sensing, 2016
The vocalization behavior of humpback whales was monitored over vast areas of the Gulf of Maine using the passive ocean acoustic waveguide remote sensing technique (POAWRS) over multiple diel cycles in Fall 2006.
Wei Huang, Delin Wang, Purnima Ratilal
doaj   +1 more source

Environmental Monitoring: A Comprehensive Review on Optical Waveguide and Fiber-Based Sensors. [PDF]

open access: yesBiosensors (Basel), 2022
Butt MA   +5 more
europepmc   +1 more source

Marine Structural Health Monitoring with Optical Fiber Sensors: A Review. [PDF]

open access: yesSensors (Basel), 2023
Chen S   +8 more
europepmc   +1 more source

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