A large-aperture 160-element coherent hydrophone array system, developed in-house at Northeastern University, was deployed and tested at sea in shallow water Great South Channel and deep ocean south of Rhode Island during September 2021. The system implements the passive ocean acoustic waveguide remote sensing technology for real-time instantaneous wide area ocean monitoring. The array data sampled at 100 kHz per element were processed in real-time at sea to provide beamformed spectrogram imagery in multiple frequency subbands from 10 Hz to 50 kHz and spanning 360 degree horizontal azimuths about the receiver array. A wide variety of acoustic detections were made in real time, including marine mammal vocalizations and motion-related signals, fish grunts and other fish-generated signals, tonal and broadband signals from distant ships and own tow ship. Real-time detections of marine mammal vocalizations include fin whale 20 Hz pulses, humpback whale songs and social sounds, minke whale buzz sequences, sperm whale echolocation and social clicks, dolphin whistles and echolocation clicks, as well as calls from unidentified baleen and toothed whale species. A database of automatically detected signals with bearing-time information along with extracted time-frequency characteristics was generated in real-time at sea.
Skip Nav Destination
Article navigation
October 2022
Meeting abstract. No PDF available.
October 01 2022
Real-time instantaneous wide-area ocean acoustic monitoring in the shallow Great South Channel and deep ocean south of Rhode Island with Northeastern University coherent hydrophone array
Sai Geetha Seri;
Sai Geetha Seri
Elec. and Comput. Eng., Northeastern Univ., 360 Huntington Ave., Boston, MA 02115, [email protected]
Search for other works by this author on:
Matthew E. Schinault;
Matthew E. Schinault
Elec. and Comput. Eng., Northeastern Univ., Boston, MA
Search for other works by this author on:
Nicholas C. Makris;
Nicholas C. Makris
Mech. Eng., Massachusetts Inst. of Technol., Cambridge, MA
Search for other works by this author on:
Purnima R. Makris
Purnima R. Makris
Elec. and Comput. Eng., Northeastern Univ., Boston, MA
Search for other works by this author on:
J. Acoust. Soc. Am. 152, A212 (2022)
Citation
Sai Geetha Seri, Hamed Mohebbi-Kalkhoran, Max Radermacher, Matthew E. Schinault, Chenyang Zhu, Nicholas C. Makris, Purnima R. Makris; Real-time instantaneous wide-area ocean acoustic monitoring in the shallow Great South Channel and deep ocean south of Rhode Island with Northeastern University coherent hydrophone array. J. Acoust. Soc. Am. 1 October 2022; 152 (4_Supplement): A212. https://doi.org/10.1121/10.0016043
Download citation file:
161
Views
Citing articles via
All we know about anechoic chambers
Michael Vorländer
A survey of sound source localization with deep learning methods
Pierre-Amaury Grumiaux, Srđan Kitić, et al.
Does sound symbolism need sound?: The role of articulatory movement in detecting iconicity between sound and meaning
Mutsumi Imai, Sotaro Kita, et al.
Related Content
Acoustic diversity, bearing estimation, and localization of sound sources in shallow water and deep ocean off the U.S. Northeast coast using a coherent hydrophone array
J. Acoust. Soc. Am. (March 2024)
Estimating minke whale relative abundance in the North Atlantic using passive acoustic sensors
J. Acoust. Soc. Am. (November 2021)
Analysis of fin whale vocalizations south of Rhode Island
J Acoust Soc Am (October 2016)
Analysis of fin whale vocalizations south of Rhode Island
J Acoust Soc Am (May 2017)