| 引用本文： |
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栾虹,谢健,王平,赵明利,李明杰,姜广,叶立金,林纪江,黎远金.基于HY-1C和Landsat 8数据珠江口海域悬浮物遥感反演[J].海洋开发与管理,2025,42(3):88-95
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| 摘要: |
| 总悬浮物是海洋水色的重要物质，对海洋环境的影响重大。传统的悬浮物监测方式耗费大、成本高、效率较低，急需要大面积、高分辨率、高频次的卫星遥感数据。文章利用实测数据结合HY-1C和Landsat 8卫星遥感数据，提出构建适用于珠江口海域的多波段比值遥感反演模型，开展了珠江口悬浮物遥感反演空间分布研究并通过对比验证相对误差发现HY-1C遥感反演结果与实测数据的平均相对误差为28.5%，Landsat 8遥感反演结果与实测数据的平均相对误差为6.5%，HY-1C遥感反演结果与Landsat 8遥感反演结果平均相对误差为23.9%。两种遥感数据反演悬浮物的空间分布结果一致，呈现西北高东南低，高浓度值主要集中分布在珠江口西岸，离岸悬浮物浓度值低的特征。受海洋环境因素的影响，悬浮物的局部分布特征略有不同。HY-1C反演珠江口海域悬浮物较好，其高频次、宽覆盖特征在悬浮物大面积监测方面具有较高的应用价值。 |
| 关键词: 珠江口 悬浮物 遥感反演 HY-1C卫星数据 Landsat 8卫星数据 |
| DOI：10.20016/j.cnki.hykfygl.20250325.001 |
| 投稿时间：2024-11-05修订日期：2025-03-05 |
| 基金项目:国家海洋科学数据中心粤港澳大湾区分中心（2024B1212080006）；科技基础资源调查专项（2022FY202403）. |
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| Remote Sensing Retrieval of Suspended Matter in the Pearl River Estuary Based on HY-1C and Landsat 8 Data |
| LUAN Hong,XIE Jian,WANG Ping,ZHAO Mingli,LI Mingjie,JIANG Guangjia,YE Lijin,LIN jijiang,LI Yuanjin |
| South China Sea Island Center, MNR;South China Sea Bureau, MNR;South China Sea Institute of Planning and Environment, MNR;South China Sea Ecology Center, MNR |
| Abstract: |
| Total Suspended Matter (TSM) is a significant component influencing ocean color and plays a crucial role in marine environments. Traditional methods for monitoring suspended matter are resource-intensive, costly, and relatively inefficient, creating a pressing need for large-scale, high-resolution, and high-frequency satellite remote sensing data. This study utilizes in situ data combined with HY-1C and Landsat 8 satellite remote sensing data to propose a multi-band ratio remote sensing inversion model suitable for the Pearl River Estuary. The research focuses on the spatial distribution of suspended matter in the Pearl River Estuary through remote sensing inversion. Comparative validation of relative errors reveals that the average relative error between HY-1C remote sensing inversion results and in situ data is 28.5%, while the average relative error between Landsat 8 remote sensing inversion results and in situ data is 6.5%. The average relative error between HY-1C and Landsat 8 remote sensing inversion results is 23.9%. The spatial distribution of suspended matter derived from both remote sensing datasets is consistent, showing higher concentrations in the northwest and lower concentrations in the southeast. High concentration values are primarily distributed along the western coast of the Pearl River Estuary, with lower concentrations observed offshore. Due to the influence of marine environmental factors, there are slight variations in the local distribution characteristics of suspended matter. HY-1C demonstrates better performance in inverting suspended matter in the Pearl River Estuary, and its high-frequency and wide-coverage characteristics make it highly valuable for large-scale monitoring of suspended matter. |
| Key words: Pearl River Estuary,Suspended matter,Remote sensing inversion,HY-1C satellite data,Landsat 8 satellite data |
