Abstract:

Under Project Spinnaker a joint Canadian/U.S. large multiple aperture array was deployed and cabled back to shore under the Arctic ice pack during April 1996 to acquire long-term measurements of Arctic ambient noise. The data collected have been documented and are being distributed to investigators for analysis. As well, the system is planned as a receive station for the joint U.S./Russian Arctic Climate Observations Using Underwater Sound (ACOUS) project. Although batteried for a 3-to-5-year life, in June 1996 the signal from the array terminated abruptly. After detailed analysis of the last recorded data, a repair effort was planned for the Spring of 1997. This paper will describe the anaysis, methods, and outcome of the in situ repair and future use of the deployed acoustic array system. [Work supported by ONR, SPAWAR, and CRAD.]