Vertical line array measurements of ambient noise in the North Pacific

被引:25
作者
Farrokhrooz, Mehdi [1 ]
Wage, Kathleen E. [1 ]
Dzieciuch, Matthew A. [2 ]
Worcester, Peter F. [2 ]
机构
[1] George Mason Univ, Dept Elect & Comp Engn, Fairfax, VA 22030 USA
[2] Univ Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92093 USA
关键词
OCEAN ACOUSTIC PROPAGATION; LOW-FREQUENCY; LONG-RANGE; SEA-FLOOR; FOURIER-TRANSFORM; DEPTH DEPENDENCE; DEEP; WIND; SURFACE; ARRIVALS;
D O I
10.1121/1.4976706
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Shipping noise and wind are the dominant sources of ocean noise in the frequency band between 20 and 500 Hz. This paper analyzes noise in that band using data from the SPICEX experiment, which took place in the North Pacific in 2004-2005, and compares the results with other North Pacific experiments. SPICEX included vertical arrays with sensors above and below the surface conjugate depth, facilitating an analysis of the depth dependence of ambient noise. The paper includes several key results. First, the 2004-05 noise levels at 50 Hz measured in SPICEX had not increased relative to levels measured by Morris [(1978). J. Acoust. Soc. Am. 64, 581-590] at a nearby North Pacific site three decades earlier, but rather were comparable to those levels. Second, at 50Hz the noise below the conjugate depth decreases at a rate of -9.9 dB/km, which is similar to the rate measured by Morris and much less than the rate measured by Gaul, Knobles, Shooter, and Wittenborn [(2007). IEEE J. Ocean. Eng. 32, 497-512] for the CHURCH OPAL experiment. Finally, the paper describes the seasonal trends in noise over the year-long time series of the measurements. (C) 2017 Acoustical Society of America.
引用
收藏
页码:1571 / 1581
页数:11
相关论文
共 49 条
[1]  
Andrew R. K., 2002, Acoustics Research Letters Online, V3, P65, DOI 10.1121/1.1461915
[2]   Long-time trends in ship traffic noise for four sites off the North American West Coast [J].
Andrew, Rex K. ;
Howe, Bruce M. ;
Mercer, James A. .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2011, 129 (02) :642-651
[3]  
Antonov J. I., 2006, NOAA ATLAS NESDIS, P1
[4]  
Baggeroer A. B., 1999, Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers (Cat. No.CH37020), P103, DOI 10.1109/ACSSC.1999.832304
[5]   Statistics and vertical directionality of low-frequency ambient noise at the North Pacific Acoustic Laboratory site [J].
Baggeroer, AB ;
Scheer, EK .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2005, 117 (03) :1643-1665
[6]   DEEP SOUND CHANNEL NOISE FROM HIGH-LATITUDE WINDS [J].
BANNISTER, RW .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1986, 79 (01) :41-48
[7]  
Carey WM, 2011, UNDERW ACOUST, P45, DOI 10.1007/978-1-4419-7832-5_4
[8]   Reduced rank models for travel time estimation of low order mode pulses [J].
Chandrayadula, Tarun K. ;
Wage, Kathleen E. ;
Worcester, Peter F. ;
Dzieciuch, Matthew A. ;
Mercer, James A. ;
Andrew, Rex K. ;
Howe, Bruce M. .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2013, 134 (04) :3332-3346
[9]   Observations and transport theory analysis of low frequency, acoustic mode propagation in the Eastern North Pacific Ocean [J].
Chandrayadula, Tarun K. ;
Colosi, John A. ;
Worcester, Peter F. ;
Dzieciuch, Matthew A. ;
Mercer, James A. ;
Andrew, Rex K. ;
Howe, Bruce M. .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2013, 134 (04) :3144-3160
[10]   Low frequency deep ocean ambient noise trend in the Northeast Pacific Ocean [J].
Chapman, N. Ross ;
Price, Andrea .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2011, 129 (05) :E161-E165