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Field performance of an acoustic scour-depth monitoring system

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Abstract

The Herbert C. Bonner Bridge over Oregon Inlet serves as the only land link between Bodie and Hatteras Islands, part of the Outer Banks of North Carolina. Periodic soundings over the past 30 years have documented channel migration, local scour, and deposition at several pilings that support the bridge. In September 1992, a data-collection system was installed to permit the off-site monitoring of scour at 16 bridge pilings. The system records channel-bed elevations at 15-minute intervals and transmits the data to a satellite receiver. A cellular phone connection also permits downloading and reviewing of the data as they are being collected. A digitally recording, acoustic fathometer is the main component of the system. In November 1993, current velocity, water-surface elevation, wave characteristics, and water temperature measuring instruments were also deployed at the site. Several performance problems relating to the equipment and to the harsh marine environment have not been resolved, but the system has collected and transmitted reliable scour-depth and water-level data.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Field performance of an acoustic scour-depth monitoring system
ISBN:
0784400369
Year Published:
1994
Language:
English
Publisher:
Publ by ASCE
Publisher location:
New York, NY, United States
Larger Work Title:
Proceedings of the Symposium on Fundamentals and Advancements in Hydraulic Measurements and Experimentation
First page:
366
Last page:
375
Conference Title:
Proceedings of the Symposium on Fundamentals and Advancements in Hydraulic Measurements and Experimentation
Conference Location:
Buffalo, NY, USA
Conference Date:
1 August 1994 through 5 August 1994