Near-surface current meter array measurements of internal gravity waves

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Description

A measurement capability using a horizontal array of 10 S4 current meters mounted on a stiff floating structure with 35m aperture has been developed to support interpretation of radar imaging of surface effects associated with internal gravity waves. This system has been fielded three times and most recently, has collected data alongside the sea-surface footprint of a land-fixed radar imaging ship-generated internal waves. The underlying need for this measurement capability is described. The specifications resulting from this need are presented and the engineering design and deployment procedures of the platform and systems that resulted are described. The current meter data ... continued below

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8 p.

Creation Information

Mantrom, D.D.; Jones, H.E. & Chambers, D.H. November 3, 1994.

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Description

A measurement capability using a horizontal array of 10 S4 current meters mounted on a stiff floating structure with 35m aperture has been developed to support interpretation of radar imaging of surface effects associated with internal gravity waves. This system has been fielded three times and most recently, has collected data alongside the sea-surface footprint of a land-fixed radar imaging ship-generated internal waves. The underlying need for this measurement capability is described. The specifications resulting from this need are presented and the engineering design and deployment procedures of the platform and systems that resulted are described. The current meter data are multiplexed along with meteorological and system status data onboard the floating platform and are telemetered to a shore station and on to a data acquisition system. The raw data are recorded, and are then processed to form space-time images of current and strain rate (a spatial derivative of the current field). Examples of raw and processed data associated with ship-generated internal waves are presented.

Physical Description

8 p.

Notes

OSTI as DE95011697

Source

  • 5. IEEE working conference on current measurement: upper ocean, boundary layer, moving platform, and non-invasive current measurements, St. Petersburg, FL (United States), 7-9 Feb 1995

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  • Other: DE95011697
  • Report No.: UCRL-JC--119080
  • Report No.: CONF-950244--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 82509
  • Archival Resource Key: ark:/67531/metadc787452

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  • November 3, 1994

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  • Dec. 3, 2015, 9:30 a.m.

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  • June 23, 2016, 10:07 a.m.

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Mantrom, D.D.; Jones, H.E. & Chambers, D.H. Near-surface current meter array measurements of internal gravity waves, article, November 3, 1994; California. (digital.library.unt.edu/ark:/67531/metadc787452/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.