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Indexed by:会议论文

Date of Publication:2010-06-20

Included Journals:EI、Scopus

Volume:1

Page Number:1141-1147

Abstract:Upward-looking sonar (ULS) has been used successfully to observe ice thickness in polar regions since the 1990s, but studies of applying ULS to the measurement of thin ice are rare. In the 2003/2004 winter, a ULS was deployed to measure ice thickness at an oil platform in Bohai Sea. The data, with a relatively high sampling frequency, were transmitted through a cable from the observation system and stored in a computer set on the platform and also sent to a remote computer in real time. A practical model to derive the thickness of thin ice in the marginal ice zones is developed. In the Bohai Sea, the tide is one of the significant hydrodynamic features. The role of tide in affecting the residual total error in the determined mean ice thickness is discussed. The results of sea ice thicknesses derived with the model were compared to observations and estimates from analysis of digital camera images. The model shows reasonable skill in detecting ice less than 0.5 m thick. Copyright ? 2010 by The International Society of Offshore and Polar Engineers (ISOPE).