Browsing Brage IMR by Author "Ratilal, Purnima"
Now showing items 1-5 of 5
-
Characterizing coastal cod vocalization using a towed hydrophone array
Seri, Sai Geetha; Schinault, Matthew Edward; Penna, Seth Michael; Zhu, Chenyang; Sivle, Lise Doksæter; de Jong, Karen; Handegard, Nils Olav; Ratilal, Purnima (Peer reviewed; Journal article, 2023)To better understand spawning vocalizations of Norwegian coastal cod (Gadus morhua), a prototype eight-element coherent hydrophone array was deployed in stationary vertical and towed horizontal modes to monitor cod sounds ... -
Continental shelf-scale passive acoustic detection and characterization of diesel-electric ships using a coherent hydrophone array
Huang, Wei; Wang, Delin; Garcia, Heriberto; Godø, Olav Rune; Ratilal, Purnima (Peer reviewed; Journal article, 2017) -
Detection, Localization and Classification of Multiple Mechanized Ocean Vessels over Continental-Shelf Scale Regions with Passive Ocean Acoustic Waveguide Remote Sensing
Zhu, Chenyang; Garcia, Heriberto; Kaplan, Anna; Schinault, Matthew; Handegard, Nils Olav; Godø, Olav Rune; Huang, Wei; Ratilal, Purnima (Journal article; Peer reviewed, 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 ... -
Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population
Makris, Nicholas C.; Godø, Olav Rune; Yi, Dong Hoon; Macaulay, Gavin; Jain, Ankita Deepak; Cho, Byunggu; Gong, Zheng; Jech, J. Michael; Ratilal, Purnima (Journal article; Peer reviewed, 2018)The wide‐area group behaviour of spawning Atlantic cod and herring is investigated. By a combination of Ocean Acoustic Waveguide Remote Sensing (OAWRS) and conventional sensing methods, first‐look images of the instantaneous ... -
Ocean Acoustic Waveguide Remote Sensing (OAWRS) of marine ecosystems
Jagannathan, Srinivasan; Bertsatos, Ioannis; Symonds, Deanelle; Chen, Tianrun; Nia, Hadi Tavakoli; Jain, Ankita Deepak; Andrews, Mark; Gong, Zheng; Nero, Redwood; Ngor, Lena; Jech, Mike; Godø, Olav Rune; Lee, Sunwoong; Ratilal, Purnima; Makris, Nicholas (Journal article; Peer reviewed, 2009-12-03)Ocean Acoustic Waveguide Remote Sensing (OAWRS) has recently been shown to be capable of instantaneously imaging and continuously monitoring fish populations over continental shelf-scale areas, covering thousands of km2. ...