WorldCat Identities

Muir, Thomas G, Jr

Overview
Works: 3 works in 3 publications in 1 language and 3 library holdings
Publication Timeline
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Most widely held works by Thomas G, Jr Muir
A geoacoustic survey of the brazos river part iii: reverberation studies( Book )

1 edition published in 1968 in English and held by 1 WorldCat member library worldwide

The report presents the results of some high frequency (85 kHz) bottom backscattering measurements made by Defense Research Laboratory (DRL) in the Brazos River near Houston, Texas, (Brazoria). The reverberation data are interpreted as a scattering strength per unit area of bottom insonification and fall in the range of scattering strength reported by others for fine mud. A method for automatic computation of boundary insonification is presented. First and second order statistical analyses of the reverberation data are also presented. The results are interpreted with a view toward their utilization in signal processing techniques. (Author)
A geoacoustic survey of the brazos river. part i. environmental studies( Book )

1 edition published in 1968 in English and held by 1 WorldCat member library worldwide

Acoustical measurements in the field required careful attention to measurements of environmental parameters in order to define the conditions prevailing during the acoustical studies. Data were obtained in support of acoustical experiments measuring transmission loss due to suspended sediment and acoustic backscatter from the river bottom. These experiments were conducted in the lower reaches of the Brazos River near Houston, Texas. The environmental studies included the hydrographic measurements of water level, current, temperature and salinity as well as measurements of suspended sediment concentration and grain size distribution, bottom topography and bottom sediment composition, grainsize distribution, layering and gas content. (Author)
A geoacoustic survey of the brazos river. part ii. ultrasonic attenuation studies( Book )

1 edition published in 1968 in English and held by 1 WorldCat member library worldwide

The use of high frequency sonar techniques for detection and study of submerged objects and geological features in rivers can be limited by the acoustic attenuation. This parameter was measured in a pilot study of the lower reaches of the Brazos River near Houston, Texas. The attenuation was due to the suspended particulate matter carried by this muddy river. At a frequency of 200 kHz and for a particulate concentration of 0.025% by weight with a mean particulate radius of 1.5 microns, the attenuation was found to be 1.5 dB/100 yd. This work was supported by the Office of Naval Research. (Author)
 
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