Environmental Correlates of Pack Ice Noise

• Main Authors: Makris, Nicholas C., Dyer, Ira
• Other Authors: MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF OCEAN ENGINEERING
• Format: Text
• Language: English
• Published: 1986
• Subjects: Snow; Ice and Permafrost; Acoustics; *PACK ICE; *AMBIENT NOISE; OCEAN CURRENTS; WIND; ATMOSPHERIC TEMPERATURE; MOMENTS; METEOROLOGICAL DATA; OCEANOGRAPHIC DATA; CORRELATION; DRIFT; HORIZONTAL ORIENTATION; NOISE; OCEAN ENVIRONMENTS; LOW FREQUENCY; ARCTIC OCEAN; UNDERICE; STRESSES; REPRINTS; Arctic; Arctic Ocean; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/ADA196336; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA196336

Low-frequency ambient noise under pack ice of the central Arctic Ocean has long-term variations(periods greater than 1 h)which correlate highly with composite measures of stress applied to the ice by wind, current, and drift. These composites are the horizontal ice stress and the stress moment, and are derived from meteorological and oceanographic data observed simultaneously with the noise. Atmospheric cooling, a known high correlate of midfrequency noise under the ice, is not important at low frequencies. Keywords: Underice ambient noise; Meteorological data; Ocean currents. Reprints. Pub. in Jnl. of the Acoustic Society of America, v79 n5 p1434-1440 May 1986. No copies furnished by DTIC/NTIS.