Abstract
Ambient noise data along with oceanographic, meteorological, and remote sensing data were collected during the Marginal Ice Zone Experiment in March and April 1987 in the Greenland Sea. The experiment was designed to study how ambient noise was generated by ice kinematics, ice edge eddies, and wave propagation into the ice pack. Sonobuoys were deployed in the water off the ice edge and in the adjacent ice-field where eddies, jets, and surface waves were present. SAR images of the area were obtained during the ambient noise recordings and provided important information such as position of the ice edge relative to the sonobuoys. Advanced image processing enabled ice classification, and estimates of ice concentration and floe size distribution. These parameters provided information about how ice can influence the ambient noise level and frequency distribution. Procedures to enhance wave signature in the SAR images were used to analyze the wave pattern. Correlation between SAR and ambient noise data support the hypothesis that eddies and jets represent noise level anomalies along the ice edge.
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