摘要
基于第三代海浪数值模式WAVEWATCHⅢ(v3.14),在WRF模式提供模式风场驱动下,对1109号台风"梅花"的风浪场、涌浪场和混合浪场进行了数值模拟,并在我国东部沿海选取了3个关注站点,探讨涌浪和风浪波高随时间变化与台风中心位置的关系以及台风影响下海浪二维谱、风浪场和涌浪场分布和变化特征。结果表明,新版的海浪模式能较好表现福建和浙江沿海、长江口附近、山东半岛南端的3个关注区域的台风涌浪先于风浪到达的事实;距台风中心不同距离,混合浪波高的组成和波高变化不同;台风的外围区涌浪场的高值区对应着风浪场的低值区,台风的大风区风浪场的高值区对应着涌浪场的低值区,台风眼区则为涌浪区。涌浪多分布在台风风浪影响范围之外,波向由台风中心向外辐射。
Based on the third generation of wave numerical model WAVEWATCH Ⅲ （v3.14）, wind wave field, surge field and mixed wave field of typhoon MUIFA（1109） are simulated under the wind field supplied by model WRF, and three concerned stations are selected in the coastal areas of China both for the investigation of the relationship between the variations of wave and surge heights with time and the central position of the typhoon and for the study of the distributions and variations of Two-dimensional wave spec- tra of ocean waves, wind wave field and surge field under the influence of the typhoon. The results indicate that the new version of WAVEWATCH Ⅲ can well demonstrate the fact that the surge formed by the ty- phoon arrives ahead of the wind wave in the three concerned regions, i.e. the Fujian-Zhejiang coastal area, the Yangtze River estuary and the coastal area of southern Shandong Peninsula. The composition and variation of the height of the mixed wave vary at different distances away from the typhoon center. In the peripheral zone of the typhoon the high values of the surge field are corresponding to the low values of the wind wave field, whereas in the gale area of the typhoon the high values of the wind wave field are corresponding to the low values of the surge field. The typhoon eye area is an area of surge field. The surge is mostly distributed outside the regions where the influence of the wind wave formed by the typhoon is dominant and the direction of the waves radiates outward from the center of the typhoon.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2013年第1期22-30,共9页
Advances in Marine Science
基金
国家自然科学基金项目--高风速下拖曳系数的衰减程度及其对台风浪模拟的影响研究(41106014)
