期刊
OCEAN ENGINEERING
卷 70, 期 -, 页码 14-24出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2013.05.015
关键词
Tropical cyclone waves; Wave model; Parametric model; Tropical cyclone winds
资金
- Australian Research Council (ARC) [LP0882422]
- ARC
- RPS MetOcean
- Australian Research Council [LP0882422] Funding Source: Australian Research Council
An extensive database of altimeter measurements of wind speed and significant wave height is analysed to investigate the spatial distribution of significant wave height within tropical cyclones. The database includes transects of 440 tropical cyclones. As such, the data covers the full range of expected values of the velocity of forward movement, maximum wind velocity and radius to maximum winds. The data confirms previous measurements that JONSWAP scaling can be used to represent such waves. In addition, the data supports the concept of an extended fetch in such systems. The maximum waves occur when the wind direction and direction of propagation of the storm are aligned. In such cases, the waves move forward with the storm and experience an extended fetch. A parametric model based on JONSWAP scaling and representing the extended fetch is developed and optimized using the data. Combined with previous in situ measurements, this model can reproduce the spatial distribution of significant wave height, as well as estimate the full directional spectrum. (C) 2013 Elsevier Ltd. All rights reserved.
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