Feasibility of Ocean Acoustic Waveguide Remote Sensing (OAWRS) of Atlantic Cod with Seafloor Scattering Limitations [PDF]
Remote Sensing, 2013 Recently reported declines in the population of Atlantic cod have led to calls for additional survey methods for stock assessments. In combination with conventional line-transect methods that may have ambiguities in sampling fish populations, Ocean ...
Ankita D. Jain +4 more
doaj +8 more sources
Maximum Likelihood Deconvolution of Beamformed Images with Signal-Dependent Speckle Fluctuations from Gaussian Random Fields: With Application to Ocean Acoustic Waveguide Remote Sensing (OAWRS) [PDF]
Remote Sensing, 2016 Wide area acoustic remote sensing often involves the use of coherent receiver arrays to determine the spatial distribution of sources and scatterers at any instant. The resulting acoustic intensity images are typically corrupted by signal-dependent noise
Ankita D. Jain, Nicholas C. Makris
doaj +6 more sources
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]
PLoS 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
Quantification of Wide-Area Norwegian Spring-Spawning Herring Population Density with Ocean Acoustic Waveguide Remote Sensing (OAWRS) [PDF]
Remote Sensing, 2021 Norwegian spring-spawning herring are a critical economic resource for multiple nations in the North Atlantic and a keystone species of the Nordic Seas ecosystem.
Daniel Duane +2 more
doaj +4 more sources
Ocean Acoustic Waveguide Remote Sensing: Visualizing Life Around Seamounts [PDF]
Oceanography, 2010 Collectively, seamounts form a significant biome the size of Europe with important but heavily depleted fisheries (see Etnoyer et al., 2010). Recently, large seamount tracts have been put aside as protected areas (see Pitcher et al., 2010).
Nicholas C. Makris +2 more
doaj +4 more sources
Feasibility of Acoustic Remote Sensing of Large Herring Shoals and Seafloor by Baleen Whales [PDF]
Remote Sensing, 2016 Recent research has found a high spatial and temporal correlation between certain baleen whale vocalizations and peak herring spawning processes in the Gulf of Maine.
Dong Hoon Yi, Nicholas C. Makris
doaj +3 more sources
Detection, Localization and Classification of Multiple Mechanized Ocean Vessels over Continental-Shelf Scale Regions with Passive Ocean Acoustic Waveguide Remote Sensing [PDF]
Remote 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
Angular Resolution Enhancement Provided by Nonuniformly-Spaced Linear Hydrophone Arrays in Ocean Acoustic Waveguide Remote Sensing [PDF]
Remote 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 +2 more sources
Environmental and Ecological Monitoring with Biodegradable Technologies. [PDF]
Adv Sci (Weinh)This review examines the development and application of wireless biodegradable sensors for environmental monitoring. It explores (bio)degradable materials, their degradation mechanisms in various environments, and non‐toxic fabrication techniques. Additionally, it addresses scalable production and sustainable powering solutions, emphasizing the high ...
Bathaei MJ +7 more
europepmc +2 more sources
Changes in humpback whale song occurrence in response to an acoustic source 200 km away. [PDF]
PLoS ONE, 2012 The effect of underwater anthropogenic sound on marine mammals is of increasing concern. Here we show that humpback whale (Megaptera novaeangliae) song in the Stellwagen Bank National Marine Sanctuary (SBNMS) was reduced, concurrent with transmissions of
Denise Risch +3 more
doaj +2 more sources