科研人员构建水色异常遥感识别模型

Core Insights - The research team has developed a remote sensing model for identifying abnormal water color at river discharge outlets, which is crucial for monitoring environmental conditions [1][2] - Satellite remote sensing has emerged as an important technology for regulating river discharge outlets due to its high spatial and temporal resolution [1] Research Findings - Abnormal reddish-brown water bodies were observed near sewage treatment plant discharge outlets in the southern Hangzhou Bay, despite online monitoring data indicating compliance with discharge standards [1] - The study clarified the optical mechanisms behind the color changes in water during the mixing process between discharged water and receiving water bodies, utilizing field investigations and satellite data [1] - Treated wastewater from sewage treatment plants was characterized by high concentrations of soluble organic matter and low concentrations of suspended particles, leading to strong absorption in the blue light spectrum and lower overall reflectance [1] Implications for Remote Sensing - The research provides a scientific explanation for the observed water color anomalies, laying the groundwork for the development of remote sensing monitoring algorithms based on optical mechanisms [2] - High-resolution satellite remote sensing technology is expected to achieve broader, more efficient, and cost-effective applications in monitoring coastal river discharge outlets and early warning of water color anomalies [2]