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A Comparison of Tow Criteria Derived From Satellite- and Ship-Based Observations FREE

[+] Author Affiliations
Cortis K. Cooper

Chevron Petroleum Technology Company

Paper No. 97-AA-053, pp. V001T13A029; 12 pages
doi:10.1115/97-AA-053
From:
  • ASME 1997 Turbo Asia Conference
  • ASME 1997 Turbo Asia Conference
  • Singapore, September 30–October 2, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7867-5
  • Copyright © 1997 by ASME

abstract

Three estimates of the 10-yr significant wave height (Hs) are developed for 16 tow scenarios from Perth, Singapore, and Korea to the northwest shelf of Australia. One of the estimates is based on Global Wave Statistics (Hogben, et al., 1986), a database of visual ship observations that has been used extensively by the oil industry. These results are compared to estimates derived from two recently released commercial satellite altimeter databases, SOS and CLIOSat. The mean of the 10-yr Hs for the 16 scenarios calculated from the ship data is 40% (2.6 m) larger then the satellite databases while the variance is 40% less. Evidence suggests the ship-based values are unrealistically high for a number of the scenarios. Results SOS are internally consistent and generally compare favorably with high-quality model hindcast studies in the region. The first-order statistics from CLIOSat compare well to SOS but there are substantial differences for some of the scenarios. Several of the CLIOSat-derived extremes are internally inconsistent and don’t compare well to hindcast results However, firm conclusions must await further work.

Copyright © 1997 by ASME
Topics: Ships , Satellites
This article is only available in the PDF format.

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