【摘要】：引起廣西近岸增減水主要是臺(tái)風(fēng)導(dǎo)致的風(fēng)暴潮所致。受臺(tái)風(fēng)影響,北海站42年中最大增水1.45m,最大減水-1.87m。受臺(tái)風(fēng)走向影響,廣西近海總是先減水后增水。引起廣西近海增減水除去臺(tái)風(fēng)直接作用外,還有廣東沿海陸架波西傳的間接作用。西傳的陸架波一部分直接穿過瓊州海峽進(jìn)入北部灣,另一部分繞過海南島以順時(shí)針方式進(jìn)入北部灣。2001年7月6日,臺(tái)風(fēng)"尤特"已在珠江口北岸登陸,可是7月8日卻在廣西近海普遍引起20cm以上增水。7月2日18時(shí),臺(tái)風(fēng)"榴蓮"已經(jīng)在廣西登陸,但是西傳的陸架波使廣西沿岸發(fā)生很強(qiáng)的西向流,表層地轉(zhuǎn)流流速接近92cm/s。廣西沿岸增減水除去臺(tái)風(fēng)直接與間接作用外,還有地形的影響與大氣重力波的強(qiáng)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.
【作者單位】： 廣西科學(xué)院廣西近海海洋環(huán)境科學(xué)重點(diǎn)實(shí)驗(yàn)室;中國(guó)海洋大學(xué);國(guó)家海洋局第三海洋研究所;
【基金】：國(guó)家自然科學(xué)基金(41266002) 廣西自然科學(xué)基金重大基礎(chǔ)專項(xiàng)(2012GXNSFEA0533001)資助
【分類號(hào)】：P731.23;P732
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本文編號(hào)：2255782