| Summary: | At frequencies between 3 and 50 kHz, high volume reverberation levels can have a limiting effect on active sonar operations. Therefore, experiments were conducted by the Naval Research Laboratory to determine the reverberation levels in the marginal ice zone. Three volume reverberation data sets were collected in May 1988 between Greenland and Spitsbergen in the Fram Strait. Data include frequencies from 3.5 to 50 kHz for downward-looking transducers and 3.5 to 12 kHz for an upward-looking configuration. Pulses of 10 and 40 ms in duration were used. Returning signals were processed to show depths and intensities of volume scattering. Layer strengths and column strengths are shown as a function of frequency. Column strengths are compared to those from the Chukchi Sea marginal ice zone and from locations near Greenland and Iceland. Acoustics, Arctic, Physical oceanography Author's Subject terms: Acoustics, Arctic, Physical Oceanography Cover title "August 1993." Includes bibliographical references (pages 29-31) At frequencies between 3 and 50 kHz, high volume reverberation levels can have a limiting effect on active sonar operations. Therefore, experiments were conducted by the Naval Research Laboratory to determine the reverberation levels in the marginal ice zone. Three volume reverberation data sets were collected in May 1988 between Greenland and Spitsbergen in the Fram Strait. Data include frequencies from 3.5 to 50 kHz for downward-looking transducers and 3.5 to 12 kHz for an upward-looking configuration. Pulses of 10 and 40 ms in duration were used. Returning signals were processed to show depths and intensities of volume scattering. Layer strengths and column strengths are shown as a function of frequency. Column strengths are compared to those from the Chukchi Sea marginal ice zone and from locations near Greenland and Iceland. Acoustics, Arctic, Physical oceanography "5715254A3, 0602435N, RJ35121, DN496443." Mode of access: Internet.
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