【摘要】：利用桑溝灣海帶播苗前和成熟期的海流剖面資料,對(duì)最顯著的M_2分潮流橢圓四要素(最大流速、橢圓率、最大流速方向和最大流速出現(xiàn)時(shí)間)的垂直分布特征進(jìn)行對(duì)比分析,結(jié)果表明筏式海帶養(yǎng)殖對(duì)潮流垂直結(jié)構(gòu)有顯著影響,由海帶播苗前的單一海底邊界層,變?yōu)楹С墒炱诘暮１砗秃５纂p重邊界層。海帶播苗前,M_2分潮流橢圓要素在垂向上變化不大;而在海帶成熟期,從中層向海面和海底,最大流速迅速減小、橢圓率逐漸增大、最大流速方向左偏、最大流速出現(xiàn)時(shí)間提前。灣口中部的最大流速方向從海帶播苗前的南北方向轉(zhuǎn)為海帶成熟期的西北—東南方向,這是由水位梯度的變化造成的。
[Abstract]:The vertical distribution characteristics of the four elements (maximum velocity, ellipticity, direction of maximum velocity and time of appearance of maximum velocity) of the most significant two components of tidal current in Sanggou Bay Laminaria were compared and analyzed by using the data of current profile before seeding and maturing stage in Sanggou Bay. The results show that raft kelp culture has a significant effect on the vertical structure of tidal current, from the single seabed boundary layer before the seeding of Laminaria to the sea surface and sea bottom double boundary layer in the mature stage of kelp. Before Laminaria sown, the Ellipse element of M _ 2 sub-tidal current does not change much in vertical direction, but in the mature period of Laminaria, the maximum velocity decreases rapidly from the middle level to the sea level and the sea floor, the ellipticity increases gradually, the direction of maximum velocity deviates to the left, and the time of maximum velocity appears earlier. The maximum velocity in the mouth of the bay changed from the north and south direction of the kelp seedling to the northwest-southeast direction of the kelp maturity stage, which was caused by the change of the water level gradient.
【作者單位】： 衛(wèi)星海洋環(huán)境動(dòng)力學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;國(guó)家海洋局第二海洋研究所;浙江大學(xué)海洋學(xué)院;浙江工商大學(xué)環(huán)境科學(xué)與工程學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃項(xiàng)目資助(2011CB409803)
【分類(lèi)號(hào)】：S968.421;P731.23

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本文編號(hào)：2155594