使用Sentinel-3 OLCI时间序列数据绘制潮主导的胡格利河口水质参数
Avirup Ranjan Bar1, Ismail Mondal1,2, Sourav Das1
1School of Oceanographic Studies, Jadavpur University, Kolkata, India.
Environmental monitoring and assessment
|July 20, 2023
概括
这项研究使用卫星数据监测了胡格利河口的水质,发现由于疏而导致的低氧和高总悬浮物质 (TSM). 叶绿素a和染色体溶解有机物 (CDOM) 也因季节性变化而变化.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 海洋学 海洋学 海洋学
背景情况:
- 胡格利河口是河的流域,面临着生态压力.
- 了解水质的时空变化对于水质管理至关重要.
- 关键参数包括叶绿素a,总悬浮物质 (TSM) 和染色体溶解有机物质 (CDOM).
研究的目的:
- 分析胡格利河口的叶绿素a,TSM和CDOM的时空变化.
- 评估诸如道疏等因素对水质的影响.
- 评估Sentinel-3 OLCI数据和SNAP C2RCC处理对于河口水质监测的适用性.
主要方法:
- 从2018年10月到2019年2月的Sentinel-3 OLCI遥感图像的分析.
- 对叶绿素a,TSM和CDOM度的估计.
- 统计分析以确定参数之间的相关性并确定趋势.
主要成果:
- 胡格利河口的水质的特点是氧气低,中转性条件和酸盐限制.
- 道疏显著提高了TSM水平,上游观察到的度最高.
- 叶绿素a和CDOM度表现出明显的季节性模式和空间分布,具有显著的参数之间的相关性.
结论:
- 卫星遥感为胡格利河口水质的时空动态提供了宝贵的见解.
- 疏活动是TSM水平升高的主要原因之一.
- 在这个河口,SNAP C2RCC处理器被推用于区域水质产品检索TSM,叶绿素-a和CDOM.
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