使用Landsat 8和Sentinel-2卫星图像评估沿海水位测量和气候变化对沿海生态系统的影响
Kasypi Mokhtar1, Lai Fatt Chuah2, Mohd Azhafiz Abdullah1
1Faculty of Maritime Studies, Universiti Malaysia Terengganu, Terengganu, Malaysia.
Environmental research
|October 7, 2023
概括
这项研究表明,卫星图像可以准确地绘制沿海地区的海底深度,为气候变化适应至关重要的重要水度数据提供了具有成本效益的替代方案.
科学领域:
- 地球和环境科学 地球和环境科学
- 遥感 遥感 遥感 遥感
- 沿海的地质形态学
背景情况:
- 沿海生态系统面临着气候变化影响的日益增加的风险,例如海平面上升和暴风雨加剧.
- 准确的水度数据对于评估这些威胁和为沿海管理策略提供信息至关重要.
- 传统的浴量测量数据收集方法通常是昂贵和耗时的.
研究的目的:
- 调查使用免费可用的Landsat和Sentinel卫星图像用于浴度估计的可行性.
- 评估卫星衍生的浴度与传统水文图表测量之间的相关性.
- 评估卫星图像对沿海生态系统管理和气候变化适应的有用性.
主要方法:
- 来自Landsat 8和Sentinel 2卫星数据集的蓝色和绿色光谱带的分析.
- 马来西亚克朗港的浴度地图的生成.
- 使用根平均平方误差 (RMSE) 和确定系数 (R2) 来得出的浴度精度的统计评估.
主要成果:
- 通过使用卫星图像,成功生成了 Port Klang 海底的浴度图.
- 在卫星衍生和水文图表浴度学之间发现了强烈的统计联系 (R2 = 0.9411) 和相关性 (R2 = 0.7958).
- 这项研究证实了Landsat图像对于准确的浴度评估的潜力.
结论:
- 自由访问的卫星图像为沿海地区的水度估计提供了一种可行且具有成本效益的方法.
- 这种方法可以显著提高海港码头的安全协议,并支持为沿海生态系统管理做出明智决策.
- 这些发现有助于理解遥感在适应气候变化和为沿海地区做好灾难准备方面的作用.
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