本文選題：秦皇島海域 + FBM�。� 參考：《中國(guó)環(huán)境科學(xué)》2016年08期

【摘要】：在Delft3D-FLOW模型模擬水動(dòng)力的基礎(chǔ)上,基于FBM粒子追蹤法建立和驗(yàn)證赤潮遷移擴(kuò)散模型.模擬了秦皇島海域潮流和風(fēng)生流,分析了風(fēng)生流對(duì)赤潮遷移擴(kuò)散的作用,對(duì)比分析了FBM法、拉格朗日法和常規(guī)布朗運(yùn)動(dòng)法在赤潮遷移擴(kuò)散模擬中的特性,測(cè)試了模型Hurst指數(shù)的敏感性并得出其在赤潮模擬中的合理取值范圍.主要結(jié)論為:1秦皇島海域的赤潮主要隨潮流的漲落而往復(fù)移動(dòng),一個(gè)漲落潮周期內(nèi)赤潮的凈遷移距離較小;2秦皇島海域夏季潮流較弱,但風(fēng)對(duì)赤潮遷移具有一定影響,易產(chǎn)生東北向風(fēng)生流,導(dǎo)致赤潮更易往東北方向遷移;3Hurst指數(shù)較明顯地影響粒子云的擴(kuò)散范圍,Hurst指數(shù)取0.80±0.03能比較真實(shí)地模擬秦皇島海域赤潮的遷移擴(kuò)散;4FBM法可模擬赤潮的non-Fickian擴(kuò)散現(xiàn)象,使其模擬的粒子云擴(kuò)散范圍和分布形狀明顯優(yōu)于拉格朗日法和常規(guī)布朗運(yùn)動(dòng)法.
[Abstract]:Based on the hydrodynamic simulation of Delft3D-FLOW model, the red tide migration and diffusion model was established and verified by FBM particle tracing method. The effects of wind current on red tide migration and diffusion in Qinhuangdao sea area are simulated, and the characteristics of FBM method, Lagrangian method and conventional Brownian motion method in the simulation of red tide migration and diffusion are compared and analyzed. The sensitivity of the model Hurst exponent was tested and the reasonable value range of the model was obtained in the simulation of red tide. The main conclusions are as follows: the red tide in Qinhuangdao area moves back and forth with the fluctuation of tidal current, the net migration distance of red tide in a fluctuation tide period is smaller than that in Qinhuangdao Sea area, but the wind has a certain influence on the red tide migration. Easy to produce northeast wind flow, As a result, the red tide can migrate more easily to the northeast direction. The Hurst exponent of 0.80 鹵0.03 can simulate the non-Fickian diffusion of the red tide in Qinhuangdao sea area. The diffusion range and distribution shape of the simulated particle cloud are obviously superior to those of the Lagrangian method and the conventional Brownian motion method.
【作者單位】： 同濟(jì)大學(xué)土木工程學(xué)院水利工程系;廣西壯族自治區(qū)交通規(guī)劃勘察設(shè)計(jì)研究院;上海海洋大學(xué)海洋科學(xué)學(xué)院;
【基金】：國(guó)家海洋公益項(xiàng)目(201305003)
【分類號(hào)】：X55
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本文編號(hào)：1804516