南海北部台风引起的广西近岸增减水研究
发布时间：2018-10-08 06:33
【摘要】：引起广西近岸增减水主要是台风导致的风暴潮所致。受台风影响,北海站42年中最大增水1.45m,最大减水-1.87m。受台风走向影响,广西近海总是先减水后增水。引起广西近海增减水除去台风直接作用外,还有广东沿海陆架波西传的间接作用。西传的陆架波一部分直接穿过琼州海峡进入北部湾,另一部分绕过海南岛以顺时针方式进入北部湾。2001年7月6日,台风"尤特"已在珠江口北岸登陆,可是7月8日却在广西近海普遍引起20cm以上增水。7月2日18时,台风"榴莲"已经在广西登陆,但是西传的陆架波使广西沿岸发生很强的西向流,表层地转流流速接近92cm/s。广西沿岸增减水除去台风直接与间接作用外,还有地形的影响与大气重力波的强化作用。
[Abstract]:The increase and decrease of water near the coast of Guangxi is mainly caused by storm surge caused by typhoon. Under the influence of typhoon, the maximum water increase of Beihai station in 42 years is 1.45 m, and the maximum water reduction is -1.87 m. Affected by typhoon strike, Guangxi coastal waters always reduce water first and then increase water. In addition to the direct effect of typhoon, there is also the indirect effect of wave westward propagation in Guangdong coastal shelf. Some of the westward transmissions of continental shelf waves directly through the Qiongzhou Strait into the Beibu Gulf, the other part bypassing Hainan Island into the Beibu Gulf clockwise. On July 6, 2001, Typhoon Yout made landfall on the northern shore of the Pearl River Estuary. At 18:00 on July 2, typhoon durian made landfall in Guangxi, but westward continental shelf waves caused strong westward currents along the coast of Guangxi, and the surface geostrophic current was close to 92 cm / s. In addition to the direct and indirect effects of typhoons, there are the effects of topography and the intensification of atmospheric gravity waves in the coastal waters of Guangxi.
【作者单位】： 广西科学院广西近海海洋环境科学重点实验室;中国海洋大学;国家海洋局第三海洋研究所;
【基金】：国家自然科学基金(41266002) 广西自然科学基金重大基础专项(2012GXNSFEA0533001)资助
【分类号】：P731.23;P732
，
本文编号：2255782
[Abstract]:The increase and decrease of water near the coast of Guangxi is mainly caused by storm surge caused by typhoon. Under the influence of typhoon, the maximum water increase of Beihai station in 42 years is 1.45 m, and the maximum water reduction is -1.87 m. Affected by typhoon strike, Guangxi coastal waters always reduce water first and then increase water. In addition to the direct effect of typhoon, there is also the indirect effect of wave westward propagation in Guangdong coastal shelf. Some of the westward transmissions of continental shelf waves directly through the Qiongzhou Strait into the Beibu Gulf, the other part bypassing Hainan Island into the Beibu Gulf clockwise. On July 6, 2001, Typhoon Yout made landfall on the northern shore of the Pearl River Estuary. At 18:00 on July 2, typhoon durian made landfall in Guangxi, but westward continental shelf waves caused strong westward currents along the coast of Guangxi, and the surface geostrophic current was close to 92 cm / s. In addition to the direct and indirect effects of typhoons, there are the effects of topography and the intensification of atmospheric gravity waves in the coastal waters of Guangxi.
【作者单位】： 广西科学院广西近海海洋环境科学重点实验室;中国海洋大学;国家海洋局第三海洋研究所;
【基金】：国家自然科学基金(41266002) 广西自然科学基金重大基础专项(2012GXNSFEA0533001)资助
【分类号】：P731.23;P732
，
本文编号：2255782
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