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Author: C. R. Greene Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
Results of the analysis of ambient noise recordings are presented. The average pressure spectrum level observed over the 15-day period was about 5 db over Knudsen's sea state zero extended. As a function of time, the pressure spectrum level correlated significantly with wind speed. There was little difference in ambient noise received by vertical seismometers in thick ice or thin ice. Crosscorrelation of horizontally spaced hydrophones showed that the noise was anisotropic in azimuth, and that the degree of anisotropy was correlated with wind speed delayed by one day. The amplitude probability density function was found to be non-normal by virtue of higher probabilities for high amplitude noise, although this was less for periods of low noise or deep hydrophones than for high noise or shallow hydrophones. (Author).
Author: C. R. Greene Publisher: ISBN: Category : Languages : en Pages : 23
Book Description
Results of the analysis of ambient noise recordings are presented. The average pressure spectrum level observed over the 15-day period was about 5 db over Knudsen's sea state zero extended. As a function of time, the pressure spectrum level correlated significantly with wind speed. There was little difference in ambient noise received by vertical seismometers in thick ice or thin ice. Crosscorrelation of horizontally spaced hydrophones showed that the noise was anisotropic in azimuth, and that the degree of anisotropy was correlated with wind speed delayed by one day. The amplitude probability density function was found to be non-normal by virtue of higher probabilities for high amplitude noise, although this was less for periods of low noise or deep hydrophones than for high noise or shallow hydrophones. (Author).
Author: William John Richardson Publisher: ISBN: Category : Beaufort Sea Languages : en Pages : 318
Book Description
The general objectives of the 5-year study were to document the behaviour of bowhead whales in the Canadian Beaufort Sea and to determine whether exposure to various types of industrial activities affects this behaviour.
Author: C. R Greene (Jr) Publisher: ISBN: Category : Languages : en Pages : 15
Book Description
The outputs of a pair of hydrophones suspended beneath the ice and separated sometimes vertically (210 feet) and sometimes horizontally (359 feet) were tape recorded. In order to measure directional properties of the ambient noise so recorded, the tapes were analyzed using polarity coincidence crosscorrelation. The results showed low frequency correlation as high as 34 percent and some high frequency correlation, probably resulting from marine life and strumming antenna wires in camp, as high as 6 percent. The correlation was generally stable over a period of minutes and often hours. Selected correlation functions are shown. (Author).
Author: C. R. Greene
Author: C. R. Greene
Author: 
Author: Edward I. Salkovitz
Author: Arctic Institute of North America
Author: Arctic Institute of North America
Author: 
Author: David R. Dall'Osto
Author: 
Author: William John Richardson
Author: C. R Greene (Jr)