The Measurement of Underwater Noise Characteristics in Shallow Water

1993 ◽  
pp. 45-49
Author(s):  
I. N. Didenkulov ◽  
A. S. Korotkov
Keyword(s):  
Shallow Water ◽  
Underwater Noise ◽  
Noise Characteristics

Towards a standard for the measurement of underwater noise from impact pile driving in shallow water

2014 ◽  
Vol 136 (4) ◽  
pp. 2216-2216
Author(s):  
Peter H. Dahl ◽  
Pete D. Theobald ◽  
Stephen P. Robinson
Keyword(s):  
Shallow Water ◽  
Pile Driving ◽  
Underwater Noise

scholarly journals Underwater Noise for a Variety of Traditional Fishing Boats in Cilacap Waters, Indonesia

2021 ◽  
Author(s):  
Amron Amron ◽  
Rizqi Rizaldi Hidayat ◽  
Maria Dyah Nur Meinita ◽  
Mukti Trenggono
Keyword(s):  
Noise Intensity ◽  
Noise Pollution ◽  
Underwater Noise ◽  
Main Contributor ◽  
Fishing Boat ◽  
Noise Characteristics ◽  
Noise Frequency ◽  
Traditional Fishing ◽  
Engine Type ◽  
Broadband Frequency

Abstract As the main contributor to noise pollution in Cilacap waters, the noise characteristics of traditional fishing boats based on distance are very important to be studied. This research aimed to determine noise intensity and frequency based on the distance for each traditional fishing boat (3, 5, and 10 GT). The results showed that these boats emitting noise with broadband frequency and receive levels reached 153 dB re 1 μPa. The noise characteristics were different for each type of ship due to differences in the size, engine type, and operational speed. The receive level had the same decreased pattern based on the distance for each noise frequency, but with a different intensity. Meanwhile, the noise frequency had increased quadratically based on the distance, where the higher frequency, the greater change so that the noise was not detected faster.

Underwater noise measurements during a year long Shallow Water Canada Basin Acoustic Propagation experiment from 2016 to 2017

2018 ◽  
Vol 143 (3) ◽  
pp. 1831-1831
Author(s):  
Mohsen Badiey ◽  
Ying-Tsong Lin ◽  
Sean Pecknold ◽  
Altan Turgut ◽  
Megan S. Ballard ◽  
...  
Keyword(s):  
Shallow Water ◽  
Acoustic Propagation ◽  
Canada Basin ◽  
Underwater Noise ◽  
Noise Measurements ◽  
Propagation Experiment

scholarly journals Measurement of radiated underwater noise from a small research vessel in shallow water

2016 ◽  
Vol 120 ◽  
pp. 182-189 ◽  
Author(s):  
Alex Brooker ◽  
Victor Humphrey
Keyword(s):  
Shallow Water ◽  
Research Vessel ◽  
Underwater Noise

A model for passive underwater noise suppression by bubble curtains surrounding point or line sources in shallow water

2012 ◽  
Vol 132 (3) ◽  
pp. 2061-2061
Author(s):  
Todd A. Hay ◽  
Yurii A. Ilinskii ◽  
Evgenia A. Zabolotskaya ◽  
Mark F. Hamilton
Keyword(s):  
Shallow Water ◽  
Noise Suppression ◽  
Underwater Noise

Signatures Extraction of Ship Radiated Noise Based on Passive Sonar

2014 ◽  
Vol 568-570 ◽  
pp. 233-237 ◽  
Author(s):  
Hong Ji Wang ◽  
Ri Jie Yang ◽  
Jian Hui Han
Keyword(s):  
Feature Extraction ◽  
Shallow Water ◽  
Kalman Filtering ◽  
Estimation Method ◽  
Likelihood Estimation ◽  
Real Data ◽  
Underwater Noise ◽  
Data Set ◽  
Radiated Noise ◽  
Extraction Algorithm

By combining likelihood estimation method and Kalman filtering tracking approach, feature extraction algorithm was developed in this paper to extract the harmonic feature from the underwater noise radiated by different kinds of ships. The ability of harmonic features extrication algorithm is demonstrated by simulation and real shallow water data set comprised of a number of ships. The processing results of real data set also show that he harmonics of different kinds of ships can be used to separate from each other.

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