Broadband calibration of R/V Ewing seismic sources

Details Broadband calibration of R/V Ewing seismic sources Broadband calibration of R/V Ewing seismic sources

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3114310t&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 14, CiteID L14310

Physics

Geophysics

7

Marine Geology And Geophysics: Marine Seismics (0935), Marine Geology And Geophysics: Instruments And Techniques, Public Issues: Legislation And Regulation, Public Issues: Science Policy, Oceanography: General: Ocean Acoustics

Scientific paper

The effects of anthropogenic sound sources on marine mammals are of increasing interest and controversy [e.g., Malakoff, 2001]. To understand and mitigate better the possible impacts of specific sound sources, well-calibrated broadband measurements of acoustic received levels must be made in a variety of environments. In late spring 2003 an acoustic calibration study was conducted in the northern Gulf of Mexico to obtain broad frequency band measurements of seismic sources used by the R/V Maurice Ewing. Received levels in deep water were lower than anticipated based on modeling, and in shallow water they were higher. For the marine mammals of greatest concern (beaked whales) the 1-20 kHz frequency range is considered particularly significant [National Oceanic Atmospheric Administration and U. S. Navy, 2001; Frantzis et al., 2002]. 1/3-octave measurements show received levels at 1 kHz are ~20-33 dB (re: 1 μPa) lower than peak levels at 5-100 Hz, and decrease an additional ~20-33 dB in the 10-20 kHz range.

Affiliated with

Also associated with

No associations

Rating

Broadband calibration of R/V Ewing seismic sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Broadband calibration of R/V Ewing seismic sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broadband calibration of R/V Ewing seismic sources will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1010750