Spatial mapping of underwater noise radiated from passing vessels using automatic identification system data SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
Spatial mapping of underwater noise radiated from passing vessels using automatic identification system data
Author(s)
Cho, Sungho; Kang, Donhyug; Park, Ji Sung; Hahn, Jooyoung
KIOST Author(s)
Cho, Sungho(조성호)Kang, Don Hyug(강돈혁)
Publication Year
2018-07
Abstract
Information regarding the spatial distribution of noise radiated by ships in specific areas is used as basic data for the protection of marine organisms and establishment of marine spatial planning. This study derived the spatial distribution of the noise radiated from ships navigating the southern region of Korea by acoustic modeling using Automatic Identification System data. The acoustic energy propagated from a ship to all spatial points in the experimental area was modeled using a ray-based model, and the noise level at a particular point was incoherently summed over all spatial points and averaged over time. By applying the acoustic modeling technique, we derived the average noise level at frequencies below 1 kHz radiated from ships in the ocean, and compared it with the acoustic data measured during the same period. Discrepancy between both results was found at frequencies below 250 Hz, and the possible cause of this discrepancy is related to the power-law model used to calculate the source level of the ship based on an empirical formula. The difference in current can be reliably reduced by applying a more accurate ship source model. (C) 2018 The Japan Society of Applied Physics
ISSN
0021-4922
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/874
DOI
10.7567/JJAP.57.07LG07
Bibliographic Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.57, no.7, 2018
Publisher
IOP PUBLISHING LTD
Subject
COMMERCIAL SHIPS; WATERS; SOUND
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
IOP PUBLISHING LTD
Related Researcher
Research Interests

Underwater Acoustic Modeling,Signal Processing,Underwater Target Detection,수중음향모델링,신호처리,수중표적탐지

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