Upward-Looking Sonar

ULS being deployed in the Gulf of St. Lawrence near Confederation Bridge

ULS being deployed in the Gulf of St. Lawrence near Confederation Bridge

ULS deployment in 2007 on Makkovik Bank

ULS deployment in 2007 on Makkovik Bank

Along the Canadian east coast and in eastern Barrow Strait (Canadian Arctic Archipelago), moored instrumentation has been in place to monitor ocean currents, ice draft, and ice drift to support possible oil and gas exploration and marine transportation. ADCPs are used to monitor ocean currents and ice drift and an upward-looking sonar (ASL Environmental Sciences Ice ProfiilerTM) has been used to monitor the ice draft. The ASL Ice ProfilerTM that is used is a 420 kHZ sonar with a 2 degree beamwidth and is capable of collecting the range to the mobile ie cover once per second.

ASL Environmental Sciences profiler web page

Results

Daily ice draft on Makkovik Bank measured by the ULS

Daily ice draft on Makkovik Bank measured by the ULS

Related Publications

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  • Hayden, H., D. Belliveau, et S. J. Prinsenberg. 2002. Ice Drift and Draft Measurements from Moorings at the Confederation Bridge January - March, 2000
  • Hayden, H., D. Belliveau, et S. J. Prinsenberg. 2003. Ice Drift and Draft Measurements from Moorings at the Confederation Bridge January - March, 2002
  • Prinsenberg, S. J. and Ingrid K. Peterson. 2010. "Observing regional-scale ice-atmospheric interaction processes with helicopter-borne sensors and moored Upward Looking Sonars"