黄、东海边界悬浮物输运量的卫星遥感估算

doi:10.11978/2017031

摘要/Abstract

摘要：

利用2002—2015年的中等分辨率成像光谱仪(Moderate Resolution Imaging Spectroradiometer, MODIS)第4波段反射率产品对黄、东海边界的悬浮物输运情况进行了分析, 同时利用黄、东海2003年现场实测的悬浮物含量数据和这期间准实时的MODIS影像数据, 建立了基于MODIS第4波段遥感反射率的悬浮物含量遥感反演模型。基于该模型, 反演黄、东海表层悬浮物浓度, 并计算悬浮物扩散面积。利用反演得到的表层悬浮物浓度和悬浮物浓度垂向预测模型, 获取垂直方向上的悬浮物浓度, 同时结合水深、扩散面积数据, 计算特定时刻水体中的悬浮物含量。利用插值方法获得整个输运过程中各时刻水体中的悬浮物的含量, 计算各个时刻悬浮物含量的总和作为悬浮物的输送量。对2002年10月至2003年4月黄海向东海的悬浮输送量进行估算, 估算结果为153Mt。

关键词: 黄海, 东海, 悬浮物, 遥感估算, MODIS

Abstract:

In this paper, the transport of suspended matter in the surface of the Yellow Sea and the East Sea was analyzed through the fourth band reflectivity of the Moderate Resolution Imaging Spectroradiometer (MODIS) from 2002 to 2015. In the meantime, the in situ data of suspended matter content in the Yellow Sea and the East Sea in 2003 as well as the quasi-real time MODIS image data during this period were utilized to establish a remote sensing inversion model of suspended matter content based on MODIS fourth band remote sensing reflectivity. Using this model, the concentration of suspended matter in the surface layer of the Yellow Sea and the East China Sea was reversed, and the diffusion area of suspended matter was calculated. Then, according to the surface suspended matter concentration obtained from the inversion model and the suspended matter concentration of vertical prediction model, the suspended matter in the vertical direction was estimated. Meanwhile, the suspended matter content in the water at a specific time was calculated by taking into account of water depth and diffusion area. Next, the suspended matter content in the water at various moments during the transport was figured out using cubic polynomial interpolation, from which the transport amount at various moments was derived. The estimated transport amount of suspended matter from the Yellow Sea to the East Sea from October 2002 to April 2003 was 0.153 billion tons.

Key words: East China Sea, Yellow Sea, suspended particulate matter, estimation based on remote sensing, MODIS

尹小青, 杨顶田, 周立柱. 黄、东海边界悬浮物输运量的卫星遥感估算[J]. 热带海洋学报, 2018, 37(2): 10-16.

Xiaoqing YIN, Dingtian YANG, Lizhu ZHOU. Estimation of suspended particulate matter transport via the boundary waters of the Yellow Sea and the East Sea based on satellite remote sensing[J]. Journal of Tropical Oceanography, 2018, 37(2): 10-16.

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月份	浓度/(mg·L^-1)	面积/(×10⁴km²)
10	3.51	0.17
11	6.27	2.4
12	8.21	4.0
1	7.41	5.1
2	5.95	5.3
3	4.55	2.1
4	3.57	0.4

季节	公式
秋季	ln(C/C₀)=0.704-0.799h_r
冬季	ln(C/C₀)=0.437-0.476h_r
春季	ln(C/C₀)=0.557-0.657h_r