Results 81 to 90 of about 163,397 (237)

sonar

open access: yes, 2011
[ES] Definición del término Sonar en el diccionario Dicter. [EN] Definition of the word Sonar in the dictionary Dicter.
openaire   +3 more sources

Clustering Acoustic Backscatter in the Angular Response Space [PDF]

open access: yes, 2007
Backscatter mosaicking is a necessary step in the analysis and interpretation of sidescan and multibeam sonar records. However, due to limitations intrinsic to the mosaicking technique, backscatter mosaics are restricted in their capacity to ...
Calder, Brian R., Fonseca, Luciano E.
core   +1 more source

Methods for separating the noise produced by the wheels and track during a train pass-by

open access: yesRailway Engineering Science
Rolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson   +6 more
doaj   +1 more source

In-Situ Far-Field Calibration of Multibeam Sonar Arrays for Precise Backscatter Imagery [PDF]

open access: yes, 1996
Calibration of large hull-mounted sonar transducer arrays is usually done by measuring the performance of individual components in a test tank. Multiple transducer element beam patterns are superimposed and combined with window attenuation and other ...
de Moustier, Christian   +3 more
core   +1 more source

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves   +8 more
wiley   +1 more source

Use of Multibeam and Dual-Beam Sonar Systems to Observe Cavitating Flow Produced by Ferryboats: In a Marine Renewable Energy Perspective

open access: yesJournal of Marine Science and Engineering, 2017
With the prospect to deploy hydrokinetic energy converters in areas with heavy boat traffic, a study was conducted to observe and assess the depth range of cavitating flow produced by ferryboats in narrow channels.
Francisco Francisco   +3 more
doaj   +1 more source

Addams Crater, Venus, Venus: outflow analogous with a submarine debris flow? [PDF]

open access: yes, 2005
The extraordinary outflow length and morphology of Addams crater deposits are compared with the Saharan submarine debris flow off Northwest Africa. Vapor cloud modelling and comparison of sonar data with radar images suggest a possible similar origin for
Petford, Nick, Purdie, P.
core  

STREETS AS STAGES: Traffic Enforcement and the Competition for Cultural Growth in China

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
ABSTRACT In keeping with China’s desire to build soft power to parallel its economic growth, the policing of city streets has moved to the forefront as a mechanism for moral regulation and improving urban prestige. Under pressure to civilize their citizenry, many Chinese cities have become entrepreneurial cities within a type of cultural growth ...
Gregory Fayard
wiley   +1 more source

Method for environmental protection of fish from going into water discharge facilities [PDF]

open access: yesCaspian Journal of Environmental Sciences
Spillway structures of hydroelectric power plants, dams, and other large hydroelectric facilities are characterized by high volumes of discharged water. Moreover, the discharge can also go in a volley way - when a large volume of water mass is passed in ...
Artur Tumenov   +4 more
doaj   +1 more source

Assessing Bottom Gear Impact in the WGOM Closure Area: A Multifaceted Approach [PDF]

open access: yes, 2007
Mashkoor Malik presented the results of a UNH Center for Coastal and Ocean Mapping (CCOM) study of the seafloor of the WGOMCA. Objectives The objectives for the CCOM study were to: • Construct a bathymetric map of Jeffrey’s Ledge to serve as a framework ...
Malik, Mashkoor A., Mayer, Larry A.
core   +1 more source

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