【摘要】：近岸水體懸浮泥沙濃度的時(shí)空動(dòng)態(tài)變化不僅具有重要的科學(xué)研究?jī)r(jià)值,而且能為經(jīng)濟(jì)建設(shè)提供必要的決策輔助。論文對(duì)近岸水體懸浮泥沙輸運(yùn)研究,特別是結(jié)合衛(wèi)星海洋遙感和海洋數(shù)值模擬技術(shù)做了深入的調(diào)研。依托國(guó)家海洋局第二海洋研究所衛(wèi)星海洋環(huán)境動(dòng)力學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室雄厚的技術(shù)和數(shù)據(jù)基礎(chǔ),對(duì)東海近岸水體懸浮泥沙濃度逐時(shí)的時(shí)空動(dòng)態(tài)變化特征進(jìn)行了遙感反演和數(shù)值模擬研究,利用數(shù)值模擬替補(bǔ)了衛(wèi)星海洋水色遙感產(chǎn)品缺失數(shù)據(jù)。利用高時(shí)間分辨率的海洋水色遙感傳感器GOCI,反演得到了東海近岸水體,特別是杭州灣內(nèi)逐時(shí)的懸浮泥沙數(shù)據(jù)。將GOCI懸浮泥沙數(shù)據(jù)作為海洋模型COHERENS中泥沙輸運(yùn)模塊的初始場(chǎng),提高了懸浮泥沙初始場(chǎng)空間分辨率,并利用GOCI懸浮泥沙反演數(shù)據(jù)驗(yàn)證了數(shù)值模擬結(jié)果。利用耦合水色遙感數(shù)據(jù)的懸浮泥沙數(shù)值模型再現(xiàn)和分析了東海近岸水體,特別是杭州灣內(nèi)懸浮泥沙的逐時(shí)變化特征,結(jié)果顯示潮流是影響懸浮泥沙濃度變化的主要原因,為實(shí)時(shí)監(jiān)測(cè)和預(yù)測(cè)預(yù)報(bào)懸浮泥沙動(dòng)態(tài)變化提供了參考。針對(duì)由于云層覆蓋影響等條件下造成東海近岸水體懸浮泥沙濃度遙感數(shù)據(jù)缺失的問題,利用懸浮泥沙輸運(yùn)模型建立了有云區(qū)域和無(wú)云區(qū)域懸浮泥沙數(shù)據(jù)的海洋動(dòng)力關(guān)系,將數(shù)值模擬結(jié)果提取并替補(bǔ)到缺失的遙感反演數(shù)據(jù)中。然后對(duì)替補(bǔ)的懸浮泥沙遙感反演數(shù)據(jù)進(jìn)行了質(zhì)量評(píng)價(jià),結(jié)果顯示替補(bǔ)效果較好。利用懸浮泥沙輸運(yùn)數(shù)值模型替補(bǔ)海洋遙感反演缺失數(shù)據(jù),該方法的海洋動(dòng)力學(xué)物理基礎(chǔ)明確,方法簡(jiǎn)單易行并且穩(wěn)定可靠。為提高海洋水色遙感數(shù)據(jù)利用率和長(zhǎng)時(shí)間序列遙感反演數(shù)據(jù)分析提供了參考。論文的主要?jiǎng)?chuàng)新點(diǎn)如下:·利用衛(wèi)星海洋遙感技術(shù)可以獲取大面積準(zhǔn)同步觀測(cè)數(shù)據(jù)的特點(diǎn),將GOCI懸浮泥沙反演數(shù)據(jù)作為海洋數(shù)值模型COHERENS的初始場(chǎng),提高了初始場(chǎng)的空間分辨率;利用衛(wèi)星遙感數(shù)據(jù)檢驗(yàn)了懸浮泥沙輸運(yùn)數(shù)值模擬結(jié)果,驗(yàn)證了懸浮泥沙輸運(yùn)模型的適用性�！ゑ詈闲l(wèi)星海洋遙感和懸浮泥沙輸運(yùn)模型對(duì)東海近岸水體,特別是杭州灣內(nèi)懸浮泥沙濃度逐時(shí)變化特征進(jìn)行了監(jiān)測(cè)和動(dòng)力分析,為實(shí)時(shí)監(jiān)測(cè)懸浮泥沙濃度動(dòng)態(tài)變化特征提供了參考�！だ脩腋∧嗌齿斶\(yùn)模型對(duì)衛(wèi)星遙感反演缺失數(shù)據(jù)進(jìn)行了替補(bǔ),為解決受云層覆蓋影響等條件下造成遙感數(shù)據(jù)缺失提供了方法參考。
[Abstract]:The temporal and spatial dynamic changes of suspended sediment concentration in coastal waters not only have important scientific research value, but also provide necessary decision support for economic construction. In this paper, the transport of suspended sediment in inshore water is studied, especially in combination with satellite ocean remote sensing and ocean numerical simulation. Relying on the solid technical and data base of the State key Laboratory of Satellite Marine Environmental Dynamics of the second Ocean Research Institute of the State Oceanic Administration, The temporal and spatial dynamic characteristics of suspended sediment concentration in the coastal waters of the East China Sea are studied by remote sensing inversion and numerical simulation. The missing data of satellite ocean color remote sensing products are replaced by numerical simulation. The temporal suspended sediment data in the coastal waters of the East China Sea, especially in the Hangzhou Bay, were obtained by using the high temporal resolution ocean color remote sensing sensor (GOCI,). Using GOCI suspended sediment data as the initial field of sediment transport module in ocean model COHERENS, the spatial resolution of suspended sediment initial field is improved, and the numerical simulation results are verified by GOCI suspended sediment inversion data. The temporal variation characteristics of suspended sediment in the coastal waters of the East China Sea, especially in the Hangzhou Bay, are reappeared and analyzed by using the numerical model of suspended sediment with coupled water color remote sensing data. The results show that the tidal current is the main reason for the change of suspended sediment concentration. It provides a reference for real time monitoring and prediction of suspended sediment dynamic change. Aiming at the lack of remote sensing data of suspended sediment concentration in the coastal waters of the East China Sea due to the influence of cloud cover, the marine dynamic relationship of suspended sediment data in cloud region and cloud free area is established by using suspended sediment transport model. The numerical simulation results are extracted and replaced in the missing remote sensing inversion data. Then, the quality of the suspended sediment inversion data is evaluated, and the results show that the replacement effect is better. Using the suspended sediment transport numerical model to replace the missing data from ocean remote sensing, the physical basis of marine dynamics is clear, the method is simple and reliable. It provides a reference for improving the utilization rate of ocean water color remote sensing data and the analysis of long time series remote sensing inversion data. The main innovations of this paper are as follows: using satellite ocean remote sensing technology to obtain large area quasi-synchronous observation data, the GOCI suspended sediment inversion data is taken as the initial field of the ocean numerical model COHERENS, and the spatial resolution of the initial field is improved. The numerical simulation results of suspended sediment transport are verified by using satellite remote sensing data, and the applicability of the suspended sediment transport model is verified. The coupled satellite ocean remote sensing and suspended sediment transport model are applied to the coastal waters of the East China Sea. In particular, the time-varying characteristics of suspended sediment concentration in Hangzhou Bay are monitored and dynamic analysis is carried out. It provides a reference for the real-time monitoring of the dynamic variation of suspended sediment concentration. The missing data from satellite remote sensing are replaced by the suspended sediment transport model. It provides a method reference for solving the problem of missing remote sensing data under the influence of cloud cover.
【學(xué)位授予單位】：中國(guó)科學(xué)院研究生院(上海技術(shù)物理研究所)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：P715.7;P731.2

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