在澳大利亚东南部的小型水体中,远程探测水的颜色
Shuang Liu1, Seokhyeon Kim2, William Glamore3
1Water Research Centre, University of New South Wales, Sydney, NSW, 2052, Australia; ARC ITTC Data Analytics for Resources and Environments, University of New South Wales, Sydney, NSW, 2052, Australia.
Journal of environmental management
|January 23, 2024
概括
卫星产生的水色有效地预测水质和小水体的环境变化. 设计和当地气候因素显著影响这些水色模式,有助于健康评估.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 水质监测 水质监测
背景情况:
- 水体颜色作为水质和环境变化的指标.
- 卫星监测为评估水体的传统现场测量提供了一个可行的替代方案.
研究的目的:
- 为了评估卫星衍生水颜色作为水质和环境变化在小水体的预测器.
- 在小型水体中识别空间和时间水色模式的驱动因素.
主要方法:
- 在澳大利亚墨尔本大区对145个小水体 (<1平方公里) 的分析,超过30年.
- 使用 Sentinel-2 和Landsat 5,7 和 8 卫星表面反射率图像.
- 研究了水体设计 (巨型植物比率,海岸线发展指数) 和气候因素对水颜色的影响.
主要成果:
- 研究区域的基线水颜色主要属于绿色至黄色光谱 (532578 nm).
- 巨型植物比率和海岸线发展指数是影响水色的关键因素.
- 当地的气候变化明显影响了水的颜色,而不是区域因素.
结论:
- 卫星产生的水颜色是评估水体健康状况的有效代理.
- 水色的时空变化可以用来评估小水体中的环境趋势.
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