Confederation Bridge

Confederation Bridge

Confederation Bridge

The map shows mooring locations for the year 2000.  The dotted line in the inset shows the primary axis of flow.

The map shows mooring locations for the year 2000. The dotted line in the inset shows the primary axis of flow.

Objectives

Helicopter-borne sensors and subsurface, moored instruments have been used to measure ice properties near Confederation Bridge. NRCAN and Univ. of Calgary personnel have instrumented the bridge piers with tilt sensors and are inferring from these the forces (wind and ice) on the Confereation Bridge and are using the helicopter-borne sensor data in their analysis.

Instruments

Results

It was found that the piers of Confederation Bridge facilitate breakage of ice floes as they are driven back and forth by wind and tide. The interaction of the bridge piers produces ice rubble and brash ice. The spatial extent of the bridge's influence depends on the strength of the tidal currents and wind forcing. Data also show that the piers slow the ice velocity on the upstream side and cause pieces to be displaced deep beneath the surface.

Ice floe

Ice floe

Ice floe

Ice floe

Piers of Confederation Bridge

Piers of Confederation Bridge

Piers of Confederation Bridge

Piers of Confederation Bridge

slideshow of field work results

Related Projects

Related Publications

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  • Belliveau, D. J., H. Hayden, and S. J. Prinsenberg. 2001. "Ice Drift and Draft Measurements from Moorings at the Confederation Bridge"
  • Belliveau, D. J., H. Hayden, and S. J. Prinsenberg. 2001. "Ice Drift and Draft Measurements from Moorings at the Confederation Bridge"
  • Prinsenberg, S. J. and I. K. Peterson. 2001. "Pack Ice Thickness and Concentration Measurements from the Area Around Confederation Bridge (Canada) Using Helicopter-borne Sensors"
  • van der Baaren, A. and S. J. Prinsenberg. 2001. Satellite-tracked Ice Beacon Program, 1999-2001
  • Hayden, H., D. Belliveau, and S. J. Prinsenberg. 2002. Ice Drift and Draft Measurements from Moorings at the Confederation Bridge January - March, 2000
  • Hayden, H. B., D. J. Belliveau, and S. J. Prinsenberg. 2003. Ice Drift and Draft Measurements from Moorings at the Confederation Bridge January - March, 2002
  • van der Baaren, A. and S. J. Prinsenberg. 2006. Wind Forcing of Ice Drift in the Southern Gulf of St. Lawrence: Satellite-tracked Ice Beacon Program 2004
  • Frederking, R., I. Kubat, and S. Prinsenberg. 2006. "Response of two piers on Confederation Bridge to ice loading event of April 4, 2003"
  • Frederking, R., I. Kubat, and S. Prinsenberg. 2007. "Ice interaction with Confederation Bridge - Review of NRC program"