Volume Reverberation in the Marginal Ice Zone of Fram Strait

• Main Authors: Wilson, Marcia A., Love, Richard H.
• Other Authors: NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
• Format: Text
• Language: English
• Published: 1993
• Subjects: Snow; Ice and Permafrost; Acoustics; *ACOUSTIC SCATTERING; *REVERBERATION; *SEA ICE; FREQUENCY; REPRINTS; SCATTERING; ACOUSTIC WAVES; DEPTH; PROFILES; NORWEGIAN SEA; STRAITS; ARCTIC OCEAN; ICELAND; CHUKCHI SEA; DENMARK; GREENLAND; BAYS; ACOUSTIC PROPERTIES; COLD WATER; NEWFOUNDLAND(PROVINCE); LABRADOR SEA; FRAM STRAIT; BAFFIN BAY; MARGINAL ICE ZONES; UNDERWATER ACOUSTICS; ICE; PULSES; WAVE PROPAGATION; NAVAL RESEARCH; TRANSDUCERS; OCEANS; PE62435N; WUDN496443; Arctic; Arctic Ocean; Baffin Bay; Chukchi Sea; Greenland; Newfoundland; Norwegian Sea; Baffin; Chukchi; Davis Strait; Denmark Strait; Fram Strait; Ice; Iceland; Labrador Sea; permafrost; Sea ice; Spitsbergen
• Online Access: http://www.dtic.mil/docs/citations/ADA275344; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA275344

Many measurements of volume reverberation have been conducted in the open oceans of the world. In May 1988, the Naval Research Laboratory at Stennis Space Center (NRL-SSC) had the opportunity to investigate volume reverberation in a unique region: the marginal ice zone (MIZ) of the Fram Strait between Spitsbergen and Greenland. Measurements were made from a drifting ice camp at three locations over a four day period. Volume scattering strength versus depth profiles were obtained at frequencies from 3.5 to 50 kHz using short CW pulses from a suite of downward and upward looking transducers. Results show that scattering layers occurred from about 100 to 200 m and 400 to 500 m at each location, with some variability in strength at the different locations. A comparison with volume scattering strengths reported from other cold water regions shows that values observed in the Fram Strait MIZ were lower than those reported at similar frequencies from open waters of the Norwegian Sea, Labrador Sea, and northern Baffin Bay, and comparable to those in the Denmark Strait, Davis Strait, Chukchi Sea MIZ, and northeast of Iceland. Acoustic propagation, Sea ice, Arctic Ocean. Availability: Pub. in Ocean Reverberation, p285-290 1993.