本文選題：中國東部陸架海　切入點：遙感　出處：《中國海洋大學》2014年碩士論文　論文類型：學位論文

【摘要】：論文開發(fā)了“利用ENVI/IDL從衛(wèi)星遙感數(shù)據(jù)中提取懸浮泥沙濃度和海表溫度的批處理”方法，用于研究中國東部海域大區(qū)域懸浮泥沙的時空特征和分布規(guī)律，分析懸浮泥沙分布的控制因素以及意義，最終達到預測中國東部海域未來沉積特征的目的。 論文對2010年每日的NOAA-19AVHRR/3數(shù)據(jù)進行了處理，分析了12個月的表層懸浮泥沙和海表溫度的月變化，對2010年冬半年和夏半年的表層懸浮泥沙輸運進行了對比分析，并從物源區(qū)、輸運區(qū)、沉積匯區(qū)和遠距離擴散區(qū)四個方面，對其輸運機制進行了研究。研究發(fā)現(xiàn)，在三、四月份，大陸架的邊緣懸浮泥沙匯集，而且懸浮泥沙沿黑潮主軸的方向分布，通過吐喀喇海峽輸向遠海。這與冬半年懸浮泥沙向海域的東南方向輸運密切相關。這個結(jié)論與冬半年懸浮泥沙不能到達大陸架邊緣的觀點相悖，這也充分證明了黑潮的捕獲作用以及屏障作用。 最終研究證明:研究區(qū)內(nèi)懸浮泥沙高濃度區(qū)和次高濃度區(qū)的分布范圍變化再次印證了中國東部海域河口“夏儲冬輸”的輸沙模式。從十月到二月，在強盛的冬季風和環(huán)流系統(tǒng)影響下，研究區(qū)的表層懸浮泥沙高濃度范圍急劇擴大，是“輸”的階段，三月到六月表層懸浮泥沙濃度分布由高變低，同時向外海擴散的強度逐漸減弱，是由“輸”到“儲”的過渡階段；從七月至九月，在強盛暖流的阻擋下，研究區(qū)的表層懸浮泥沙濃度保持低值并基本不變，是“儲”的階段。 從表層懸浮泥沙濃度與海表溫度的相關性分布圖來看，，冬半年，懸浮泥沙濃度的分布與環(huán)流的相關性極大，且分布形態(tài)呈“└”型；夏半年，懸浮泥沙濃度的分布與環(huán)流的相關性極小，分布形態(tài)呈現(xiàn)“豆芽”狀，而且研究區(qū)的絕大部分呈集中的“橢圓”狀分布。 從2010年十二個月的懸浮泥沙分布情況來看，明顯存在近岸懸浮泥沙濃度高，遠海懸浮泥沙濃度低的特點。懸浮泥沙在流系的帶動下運移，流系的強弱及走向，對懸浮泥沙的分布和輸運方向有重要的作用，但是，物源、流系、水深地形和天氣的綜合作用才是控制整個陸架海域懸浮泥沙的分布及輸運的關鍵因素。 冬半年，流系間的相互作用最明顯，這也是各個渦旋沉積區(qū)形成的重要時期；懸浮泥沙源源不斷向東南方向輸送，部分懸浮泥沙到達大陸架的邊緣被黑潮捕獲，隨黑潮輸向遠海，部分懸浮泥沙直接經(jīng)過吐喀喇海峽輸向遠海；來自長江口以及蘇北的懸浮泥沙在黃海暖流的影響下沿黃海海槽分布，促進了南黃海中部泥質(zhì)區(qū)和東海北部泥質(zhì)區(qū)的形成。夏半年，沿岸流變?nèi)酰髟鰪�，暖流阻止了懸浮泥沙向深海的輸運。由于爬升暖流的阻擋，絕大部分的懸浮泥沙不能到達大陸架的邊緣，少數(shù)到達陸架邊緣的懸浮泥沙在黑潮本身動力的阻擋下，也不能到達更遠的深海。 頻繁的冬季風和夏季風作用海面會打破懸浮泥沙常規(guī)的分布規(guī)律，使得表層的懸浮泥沙分布呈與風向相近的方向分布，這會對海域懸浮泥沙的擴散和輸運產(chǎn)生影響。同時，在多風的月份，風會攪動泥沙再懸浮，增大懸浮泥沙濃度，同時為懸浮泥沙向外海擴散提供動力，此時懸浮泥沙到達琉球群島以東的海域也是可能的。
[Abstract]:The development of the "suspended sediment concentration and sea surface temperature of the batch processing method of extraction from satellite remote sensing data using ENVI/IDL, for temporal and spatial characteristics and distribution of Chinese waters east of large area of suspended sediment, analysis of the controlling factors of suspended sediment distribution as well as the significance of the final prediction area of Eastern sedimentary characteristics. China future
The paper on 2010. The daily NOAA-19AVHRR/3 data, analyzed 12 months suspended sediment and sea surface temperature changes, surface suspended sediment on the winter of 2010 and summer transport are analyzed, and from the source area and transport area, sedimentary sink area and scattering area four on the hand, the transport mechanism was studied. The study found that in April, three, the edge of the continental shelf collection of suspended sediment, and suspended sediment along the Kuroshio axis distribution, transport to sea through the Kara Strait. The spit suspended sediment in winter to the southeast sea transport is closely related to this. Conclusion with the winter half of suspended sediment can not reach the edge of the continental shelf. It is also proved the capture effect and barrier function.
The final study proves that research in the area of high concentration of suspended sediment and distribution range of the high concentration region changes once again confirms the sediment transport patterns China estuary waters east of the "summer Chudong lose". From October to February, the impact of strong winter wind and circulation system, on the surface of suspended sediment concentration is high the rapid expansion of "lost" stage, from March to June, the suspended sediment concentration distribution changes from high to low, at the same time to the sea diffusion intensity gradually weakened, is "lost" to "transition stage reservoir"; from July to September, in the current strong barrier, the suspended sediment concentration in the study area keep a low value and is essentially the same, "reservoir" stage.
From the surface of the suspended sediment concentration and sea surface temperature correlation distribution, distribution and circulation in the winter half year, correlation between suspended sediment concentration greatly, and the distribution form is ""; in summer, the minimum correlation distribution and circulation of the suspended sediment concentration distribution, showing "bean sprouts" shape, and the study area most of the concentration ellipse shaped distribution.
From the distribution of suspended sediment in 2010 twelve months, obvious nearshore suspended sediment concentration is high, the characteristics of ocean suspended sediment concentration low. Suspended sediment transport in the current system driven by the strength and direction of current system, has an important role, and the distribution of the suspended sediment transport direction of provenance, but flow system, the comprehensive effect of topography and weather is the key factor to control the entire continental shelf area of suspended sediment distribution and transport.
In winter, the interaction between the most obvious and important period which is formed in each vortex deposition zone; suspended sediment transport to the southeast part of Everfount, suspended sediment at the edge of the continental shelf is the capture, with the Kuroshio transport to sea, part of the suspended sediment directly through the Kara Strait transport spit to sea; influence from the mouth of the Yangtze River and north of the suspended sediment in the the Yellow Sea stream along the Yellow Sea trough distribution, promote the formation of the Central South Yellow Sea Mud Area and the northern East China Sea mud area. In summer, the coastal flow is weak, warm warm enhancement, stop the suspended sediment transport to the deep sea. Due to the blocking climbing stream, the vast most of the suspended sediment can not reach the edge of the continental shelf, a suspended sediment shelf edge arrives at a barrier power under the Kuroshio itself, cannot reach beyond the sea.
The winter monsoon and summer monsoon sea frequently will break the conventional distribution of suspended sediment, the suspended sediment surface distribution is similar and the distribution of wind direction, the diffusion of suspended sediment and transport effect. At the same time, in the windy month, the wind will stir the sediment resuspension, increasing suspension at the same time as the sediment concentration, suspended sediment diffusion to the sea power, the suspended sediment to the east of the Ryukyu Islands waters is also possible.

【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：P736.2

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