Results 21 to 30 of about 364,613 (301)

Microtremor response of a mass movement in Federal District of Brazil [PDF]

open access: yes, 2017
The present study provides a brief description of the ambient noise recorded at a slow moving mass movement in Ribeirão Contagem Basin. The area is an interesting natural laboratory as river detachment processes in a number of different stages can be ...
Cárdenas-Soto, Martin   +5 more
core   +2 more sources

Review of Research Results Concerning the Modelling of Shipping Noise

open access: yesPolish Maritime Research, 2021
The effect of underwater radiated noise (URN) pollution (produced by merchant ships) on marine ecology has become a topic of extreme concern for both the academic community and the general public. This paper summarises some research results and modelling
Yan Xiaowei   +5 more
doaj   +1 more source

Species Recognition Is Constrained by Chorus Noise, but Not Inconsistency in Signal Production, in Cope’s Gray Treefrog (Hyla chrysoscelis)

open access: yesFrontiers in Ecology and Evolution, 2020
Optimal mate choice based on the assessment of communication signals can be constrained by multiple sources of noise. One well-known impediment to acoustically guided mating decisions is the ambient noise created by multiple signaling individuals in ...
Jessie C. Tanner   +2 more
doaj   +1 more source

Widespread spatial and temporal extent of anthropogenic noise across the northeastern Gulf of Mexico shelf ecosystem

open access: yesEndangered Species Research, 2016
The Gulf of Mexico ecosystem represents the intersection between high marine biodiversity and extensive human use and impact. Anthropogenic marine activities are prominent in the Gulf, prompting concern regarding impacts of chronic elevated noise ...
Estabrook, BJ   +3 more
doaj   +1 more source

Survey of ambient noise in aquariums. [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2010
Owning and maintaining an aquarium is a common hobby, but the ambient noise in aquariums resulting from pumps, filters, bubblers, and other equipment is not well studied. Elevated ambient noise levels have been shown to adversely affect wild fish and marine invertebrates, and anecdotal evidence suggests that this may be a problem in aquariums as well ...
openaire   +1 more source

Seismic Attenuation Extraction From Traffic Signals Recorded by a Single Seismic Station

open access: yesGeophysical Research Letters, 2023
Seismic ambient noise contains rich information about the physical properties of the critical zone. From the motor vehicle noise, we extract the daily seismic attenuation by quantifying the linear relationship between the frequency and amplitude ratio of
Yumin Zhao   +5 more
doaj   +1 more source

Ambient infrasound noise [PDF]

open access: yesGeophysical Research Letters, 2005
The ambient infrasound noise environment is characterized for 21 globally distributed infrasound arrays in the frequency band of 0.03 to 7 Hz. Power Spectral Density (PSD) is measured for one site of each array for 21 intervals at each of four times of day from January 2003 through January 2004.
J. Roger Bowman   +2 more
openaire   +1 more source

Acoustic behavior of melon-headed whales varies on a diel cycle. [PDF]

open access: yes, 2015
Many terrestrial and marine species have a diel activity pattern, and their acoustic signaling follows their current behavioral state. Whistles and echolocation clicks on long-term recordings produced by melon-headed whales (Peponocephala electra) at ...
Baumann-Pickering, Simone   +4 more
core   +2 more sources

Fault detection by reflected surface waves based on ambient noise interferometry

open access: yesEarthquake Research Advances, 2021
Detecting subsurface fault structure is important for evaluating potential earthquake risks associated with active faults. In this study, we propose a new method to detect faults using reflected surface waves observed in ambient noise cross correlation ...
Ning Gu   +3 more
doaj   +1 more source

ADVANCING ENVIRONMENTAL NOISE POLLUTION ANALYSIS IN URBAN AREAS BY CONSIDERING THE VARIATION OF POPULATION EXPOSURE IN SPACE AND TIME [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Ambient noise is a subtle form of pollution in large urban areas, degrading human health and well-being. In Europe, directives require that urban environmental noise be measured and mapped for the main periods of the daily cycle.
S. Freire, N. Gomes
doaj   +1 more source

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