Seismic profiling as a contaminant in the measurement of ambient noise spectral and spatial characteristics

Author

Hodgkiss, W.S.

Author_Institution

Marine Phys. Lab., Scripps Inst. of Oceanogr., San Diego, CA, USA

fYear

1988

fDate

11-14 Apr 1988

Firstpage

2705

Abstract

Data from a vertical array experiment is used to illustrate the impact of seismic profiling on ambient noise spectrum level and vertical directionality in the 25-300 Hz frequency region. It is shown by the analysis results that seismic profiling has a substantial impact on the spectral and spatial characteristics of ambient noise. For these data, the contamination is most severe in the region below 50 Hz and in the band 150-200 Hz. Spatially, the seismic profiler energy arrives within ±15° of the horizontal and produces up to 8-dB deviations from the underlying vertical directionality of the profiler-free data

Keywords

acoustic signal processing; seismology; spectral analysis; 25 to 300 Hz; ambient noise spectral characteristics; ambient noise spectrum; contaminant; explosion seismology; profiler-free data; prospecting technique; seismic profiling; seismic reflection profiling; spatial characteristics; vertical array; vertical directionality; Acoustic noise; Background noise; Frequency; Noise level; Noise measurement; Pollution measurement; Pulse measurements; Seismic measurements; Sonar equipment; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on

Conference_Location

New York, NY

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1988.197208

Filename

197208