本文選題：黃渤海　切入點(diǎn)：懸浮顆粒物　出處：《海洋科學(xué)》2016年06期

【摘要】：為了準(zhǔn)確地描述懸浮顆粒物粒徑的分布特征,探索高精度的懸浮顆粒物粒徑分布模擬,本文基于2014年11月黃、渤海的現(xiàn)場懸浮顆粒物粒徑數(shù)據(jù),研究了冪律模型在黃、渤海的適用性;同時(shí),參考粒徑作為冪律模型的重要參數(shù),影響著冪律模型的斜率(顆粒粒徑分布斜率)和模擬精度,因此對不同參考粒徑下冪律模型的斜率變化情況以及模型模擬精度也進(jìn)行了分析。結(jié)果顯示:黃、渤海區(qū)域顆粒粒徑分布斜率在0.46~7.53(均值:4.09),其中84.2%的斜率在3.2~4.5范圍內(nèi);當(dāng)參考粒徑小于7.33μm時(shí),顆粒粒徑分布斜率變化大(均值為5.60±1.09),顆粒粒徑分布模擬誤差大,平均相對誤差絕對值在20%~85%范圍內(nèi),平均相對誤差絕對值的平均值為48.2%;當(dāng)參考粒徑為7.33~19.8μm時(shí),顆粒粒徑分布斜率為4.08±0.29,顆粒粒徑分布模擬的平均相對誤差絕對值在5%~25%范圍內(nèi),平均相對誤差絕對值的平均值為9.8%;當(dāng)參考粒徑大于19.8μm時(shí),顆粒粒徑分布斜率為3.87±0.25,顆粒粒徑分布模擬的平均相對誤差絕對值在2%~10%范圍內(nèi),平均相對誤差絕對值的平均值為6.0%。誤差分析表明:參考粒徑取值大于19.8μm,冪律模型對顆粒粒徑分布的模擬效果較好,最優(yōu)參考粒徑可選為122.0μm,此時(shí)模擬誤差最小(平均相對誤差絕對值的平均值為4.79%±1.78%)。
[Abstract]:In order to accurately describe the particle size distribution characteristics of suspended particles and to explore the high precision simulation of particle size distribution, this paper studied the power law model based on the field particle size data of Yellow Sea and Bohai Sea in November 2014. At the same time, the reference particle size, as an important parameter of the power law model, affects the slope of the power law model (the slope of particle size distribution) and the simulation accuracy. Therefore, the slope variation of power law model under different reference particle sizes and the simulation accuracy of the model are also analyzed. The results show that the slope of particle size distribution in the Yellow Sea and Bohai Sea is 0.46 ~ 7.53 (mean value: 4.09), and the slope of 84.2% is in the range of 3.2n4.5; When the reference particle size is less than 7.33 渭 m, the slope of particle size distribution changes greatly (mean value is 5.60 鹵1.09 渭 m), the simulation error of particle size distribution is large, the mean relative error absolute value is in the range of 20 ~ 85%, the average relative error absolute value is 48.2%, and when the reference diameter is 7.33 ~ 19.8 渭 m, The slope of particle size distribution is 4.08 鹵0.29. The mean relative error absolute value of particle size distribution simulation is in the range of 5%, and the average relative error absolute value is 9.8%, when the reference particle size is greater than 19.8 渭 m, The slope of particle size distribution is 3.87 鹵0.25, and the average relative error absolute value of particle size distribution simulation is in the range of 2 ~ 10%. The average relative error absolute value is 6.00.The error analysis shows that the reference particle size is greater than 19.8 渭 m, and the power law model can simulate the particle size distribution better. The optimal reference particle size can be chosen as 122.0 渭 m, and the simulation error is the smallest (the average absolute value of the average relative error is 4.79% 鹵1.78%).
【作者單位】： 南京信息工程大學(xué)海洋科學(xué)學(xué)院;江蘇省海洋環(huán)境探測工程技術(shù)研究中心;
【基金】：國家自然科學(xué)基金項(xiàng)目(41276186,41576172,41506200) 江蘇省自然科學(xué)基金項(xiàng)目(BK20151526,BK20150914) 江蘇省高校自然科學(xué)基金項(xiàng)目(15KJB170015) “全球變化與海氣相互作用”專項(xiàng)(GASI03030101) 江蘇省“青藍(lán)工程”優(yōu)秀青年骨干教師項(xiàng)目 江蘇高校優(yōu)勢學(xué)科建設(shè)工程資助項(xiàng)目(PAPD) 國家海洋公益性行業(yè)專項(xiàng)項(xiàng)目(201005030)~~
【分類號】：P734.2

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