Results 11 to 20 of about 364,613 (301)

The effects of aerator noise on the swimming, feeding, and growth of Micropterus salmoides

open access: yesFrontiers in Marine Science, 2023
Aquaculture systems, replete with equipment noise originating from aerators, pumps, feeders, and filtration systems, are known to exert substantial influence on fish behavior and growth.
Yadong Zhang   +8 more
doaj   +1 more source

Adaptive noise suppression for low-S/N microseismic data based on ambient-noise-assisted multivariate empirical mode decomposition

open access: yesFrontiers in Physics, 2023
Microseismic monitoring data may be seriously contaminated by complex and nonstationary interference noises produced by mechanical vibration, which significantly impact the data quality and subsequent data-processing procedure.
Zhichao Yu   +5 more
doaj   +1 more source

Open ocean ambient noise data in the frequency band of 100 Hz–50 kHz from the Pacific Ocean [PDF]

open access: yesJASA Express Letters, 2023
Bubbles from wind generated breaking surface waves are the dominant ambient noise source [Dean and Stokes, Nature 418, 839–844 (2002)]. With ambient noise data collected in the open ocean between 100 Hz and 50 kHz from 1999 to 2022, the ambient noise ...
Jie Yang   +3 more
doaj   +1 more source

A single antenna ambient noise cancellation method for in-situ radiated EMI measurements in the time-domain [PDF]

open access: yes, 2016
This paper presents a single antenna ambient noise cancellation method for in-situ radiated emissions measurements performed using an entirely time-domain approach and the sliding window Empirical Mode Decomposition.
Azpúrua Auyanet, Marco Aurelio   +2 more
core   +1 more source

Detecting and Correlating Aircraft Noise Events below Ambient Noise Levels Using OpenSky Tracking Data

open access: yesProceedings, 2020
Noise annoyance due to aircraft operations extends well beyond the 55 Lden noise contours as calculated according to the Environmental Noise Directive (END).
Luc Dekoninck
doaj   +1 more source

Shear-Wave Tomography Using Ocean Ambient Noise with Interference

open access: yesRemote Sensing, 2020
Ambient noise carries abundant subsurface structure information and attracts ever-increasing attention in the past decades. However, there are lots of interference factors in the ambient noise in the real world, making the noise difficult to be utilized ...
Guoli Wu   +3 more
doaj   +1 more source

Ambient Noise Tomography for Coral Islands

open access: yesEngineering, 2023
As valuable land in the ocean, coral islands are not only important bases for making use of marine resources and protecting marine rights and interests, but also important for breakthrough research in many fields of earth science.
Shaohong Xia   +2 more
doaj   +1 more source

On the Statistics of Ambient Noise [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1967
The statistics of ambient noise have been investigated previously for single receivers [A. H. Green, Bell Lab. Tech. Rept. No. 10, (1962)], but no studies were made for ambient noise with arrays. Data are presented for ambient noise measured with 30- to 60-element arrays. Amplitude samples of ambient noise were taken at 30-msec intervals. The period is
Elizabeth M. Arase, T. Arase
openaire   +1 more source

Understanding the amplitudes of noise correlation measurements [PDF]

open access: yes, 2011
Cross correlation of ambient seismic noise is known to result in time series from which station-station travel-time measurements can be made. Part of the reason that these cross-correlation travel-time measurements are reliable is that there exists a ...
Tsai, Victor C.
core   +1 more source

The Alpha stable distribution in ocean ambient noise modelling [PDF]

open access: yesMATEC Web of Conferences, 2019
In view of the non-Gaussian of ocean ambient noise, the  stable distribution is applied to the statistical modelling. Firstly, the one-to-one correspondence between the four parameters of stable distribution and the sample mean, variance, skewness and ...
Song Guoli, Guo Xinyi, Ma Li
doaj   +1 more source

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