Ice Load Measurement on Molikpaq: Methodology and Accuracy

The Molikpaq deployment at Amauligak I-65 (ept/85-July/86) provides important data on icestructure interaction, for broad structures, because of the magnitude and type of interactions experienced. Although studied in depth twenty five years ago, the data has come into recent focus with further studies for development of the Amauligak discovery. But, what has become obscured and/or forgotten after twenty five years is the way ice loads on the Molikpaq were measured and recorded – there is both more detail and greater accuracy than apparently appreciated, but also limitations because of shortfalls in measurements during the first part of that winter. This paper describes the instrumentation and data acquisition systems installed in 1983-4, the upgrading of the instrumentation during 1986, and summarizes the extensive calibration work subsequently undertaken during 1986-9. An example of the measured ice loads is presented for a complete event (12 May 86) for which particularly simple conditions allow an independent assessment of ice load magnitude. The uncertainties in measured ice loads are discussed.

• Record URL:
  http://www.poac.com/Papers/POAC11_80-192.zip
• Summary URL:
  http://www.poac.com/PapersOnline.html
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03766756
• Supplemental Notes:
  • Abstract reprinted with permission of the International Conference on Port and Ocean Engineering Under Arctic Conditions (POAC).
• Corporate Authors:

  Port and Ocean Engineering under Arctic Conditions (POAC)

  ,    
• Authors:
  • Jefferies, M
  • Rogers, B
  • Hardy, M
  • Wright, B
• Conference:
  • 21st International Conference on Port and Ocean Engineering under Arctic Conditions (POAC'11)
  • Location: Montréal , Canada
  • Date: 2011-7-10 to 2011-7-14
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: 13p
• Monograph Title: POAC '11: Proceedings of the 21st International Conference on Port and Ocean Engineering under Arctic Conditions
• Serial:
  • Proceedings of the International Conference on Port and Ocean Engineering Under Arctic Conditions
  • Publisher: Port and Ocean Engineering under Arctic Conditions (POAC)
  • ISSN: 0376-6756
  • EISSN: 2077-7841
  • Serial URL: http://www.poac.com/PapersOnline.html

Subject/Index Terms

• TRT Terms: Accuracy; Data collection; Instrumentation; Loads; Measurement; Offshore drilling platforms; Sea ice
• Uncontrolled Terms: Interaction
• Subject Areas: Bridges and other structures; Environment; Marine Transportation; I15: Environment;

Filing Info

• Accession Number: 01563245
• Record Type: Publication
• Report/Paper Numbers: POAC11-189
• Files: TRIS
• Created Date: May 18 2015 11:01AM