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Gulf of Mexico Sub-Surface Jet Screening

[+] Author Affiliations
Gus Jeans

Fugro GEOS Ltd., Wallingford, Oxfordshire, UK

Shejun Fan

Fugro GEOS Inc., Houston, TX

Paper No. OMAE2007-29257, pp. 815-835; 21 pages
doi:10.1115/OMAE2007-29257
From:
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4267-3 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME

abstract

There have been reports of strong submerged jet currents in the Gulf of Mexico in recent years which have implications for the design and operation of some offshore facilities. This paper describes the methodology and results of a screening study which searched for such events within the extensive body of recent data collected by the offshore oil and gas industry, made available on the NOAA National Data Buoy Center web site. This study was conducted on behalf of a consortium of industry clients with participation by relevant US government bodies. After a first phase investigation, initially well defined screening criteria were revised to avoid the numerous events triggered by clearly invalid data and the potential for missing some critical submerged events. The automatic screening criteria were replaced by manual event selection based on plots showing all available data. The identified events fall into the following broad categories: • Submerged speed peaks due to inertial period currents, most notable after the 2005 hurricanes. • A few submerged jet like events isolated in time with no clear periodicity. • Submerged speed peaks with high vertical and error velocities and often incoherent structures. • Persistent high speed currents near the limit of the ADCP range.

Copyright © 2007 by ASME
Topics: Gulf of Mexico

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